Merge "Adding qemu as a submodule of KVMFORNFV"

1 files changed, 0 insertions, 717 deletions

diff --git a/qemu/hw/acpi/core.c b/qemu/hw/acpi/core.c
deleted file mode 100644
index 6a2f45214..000000000
--- a/qemu/hw/acpi/core.c
+++ /dev/null
@@ -1,717 +0,0 @@
-/*
- * 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/>
- *
- * Contributions after 2012-01-13 are licensed under the terms of the
- * GNU GPL, version 2 or (at your option) any later version.
- */
-#include "qemu/osdep.h"
-#include "sysemu/sysemu.h"
-#include "hw/hw.h"
-#include "hw/i386/pc.h"
-#include "hw/acpi/acpi.h"
-#include "hw/nvram/fw_cfg.h"
-#include "qemu/config-file.h"
-#include "qapi/opts-visitor.h"
-#include "qapi-visit.h"
-#include "qapi-event.h"
-
-struct acpi_table_header {
-    uint16_t _length;         /* our length, not actual part of the hdr */
-                              /* allows easier parsing for fw_cfg clients */
-    char sig[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 */
-} QEMU_PACKED;
-
-#define ACPI_TABLE_HDR_SIZE sizeof(struct acpi_table_header)
-#define ACPI_TABLE_PFX_SIZE sizeof(uint16_t)  /* size of the extra prefix */
-
-static const char unsigned dfl_hdr[ACPI_TABLE_HDR_SIZE - ACPI_TABLE_PFX_SIZE] =
-    "QEMU\0\0\0\0\1\0"       /* sig (4), len(4), revno (1), csum (1) */
-    "QEMUQEQEMUQEMU\1\0\0\0" /* OEM id (6), table (8), revno (4) */
-    "QEMU\1\0\0\0"           /* ASL compiler ID (4), version (4) */
-    ;
-
-char unsigned *acpi_tables;
-size_t acpi_tables_len;
-
-static QemuOptsList qemu_acpi_opts = {
-    .name = "acpi",
-    .implied_opt_name = "data",
-    .head = QTAILQ_HEAD_INITIALIZER(qemu_acpi_opts.head),
-    .desc = { { 0 } } /* validated with OptsVisitor */
-};
-
-static void acpi_register_config(void)
-{
-    qemu_add_opts(&qemu_acpi_opts);
-}
-
-opts_init(acpi_register_config);
-
-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;
-}
-
-
-/* Install a copy of the ACPI table specified in @blob.
- *
- * If @has_header is set, @blob starts with the System Description Table Header
- * structure. Otherwise, "dfl_hdr" is prepended. In any case, each header field
- * is optionally overwritten from @hdrs.
- *
- * It is valid to call this function with
- * (@blob == NULL && bloblen == 0 && !has_header).
- *
- * @hdrs->file and @hdrs->data are ignored.
- *
- * SIZE_MAX is considered "infinity" in this function.
- *
- * The number of tables that can be installed is not limited, but the 16-bit
- * counter at the beginning of "acpi_tables" wraps around after UINT16_MAX.
- */
-static void acpi_table_install(const char unsigned *blob, size_t bloblen,
-                               bool has_header,
-                               const struct AcpiTableOptions *hdrs,
-                               Error **errp)
-{
-    size_t body_start;
-    const char unsigned *hdr_src;
-    size_t body_size, acpi_payload_size;
-    struct acpi_table_header *ext_hdr;
-    unsigned changed_fields;
-
-    /* Calculate where the ACPI table body starts within the blob, plus where
-     * to copy the ACPI table header from.
-     */
-    if (has_header) {
-        /*   _length             | ACPI header in blob | blob body
-         *   ^^^^^^^^^^^^^^^^^^^   ^^^^^^^^^^^^^^^^^^^   ^^^^^^^^^
-         *   ACPI_TABLE_PFX_SIZE     sizeof dfl_hdr      body_size
-         *                           == body_start
-         *
-         *                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-         *                           acpi_payload_size == bloblen
-         */
-        body_start = sizeof dfl_hdr;
-
-        if (bloblen < body_start) {
-            error_setg(errp, "ACPI table claiming to have header is too "
-                       "short, available: %zu, expected: %zu", bloblen,
-                       body_start);
-            return;
-        }
-        hdr_src = blob;
-    } else {
-        /*   _length             | ACPI header in template | blob body
-         *   ^^^^^^^^^^^^^^^^^^^   ^^^^^^^^^^^^^^^^^^^^^^^   ^^^^^^^^^^
-         *   ACPI_TABLE_PFX_SIZE       sizeof dfl_hdr        body_size
-         *                                                   == bloblen
-         *
-         *                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-         *                                  acpi_payload_size
-         */
-        body_start = 0;
-        hdr_src = dfl_hdr;
-    }
-    body_size = bloblen - body_start;
-    acpi_payload_size = sizeof dfl_hdr + body_size;
-
-    if (acpi_payload_size > UINT16_MAX) {
-        error_setg(errp, "ACPI table too big, requested: %zu, max: %u",
-                   acpi_payload_size, (unsigned)UINT16_MAX);
-        return;
-    }
-
-    /* We won't fail from here on. Initialize / extend the globals. */
-    if (acpi_tables == NULL) {
-        acpi_tables_len = sizeof(uint16_t);
-        acpi_tables = g_malloc0(acpi_tables_len);
-    }
-
-    acpi_tables = g_realloc(acpi_tables, acpi_tables_len +
-                                         ACPI_TABLE_PFX_SIZE +
-                                         sizeof dfl_hdr + body_size);
-
-    ext_hdr = (struct acpi_table_header *)(acpi_tables + acpi_tables_len);
-    acpi_tables_len += ACPI_TABLE_PFX_SIZE;
-
-    memcpy(acpi_tables + acpi_tables_len, hdr_src, sizeof dfl_hdr);
-    acpi_tables_len += sizeof dfl_hdr;
-
-    if (blob != NULL) {
-        memcpy(acpi_tables + acpi_tables_len, blob + body_start, body_size);
-        acpi_tables_len += body_size;
-    }
-
-    /* increase number of tables */
-    stw_le_p(acpi_tables, lduw_le_p(acpi_tables) + 1u);
-
-    /* Update the header fields. The strings need not be NUL-terminated. */
-    changed_fields = 0;
-    ext_hdr->_length = cpu_to_le16(acpi_payload_size);
-
-    if (hdrs->has_sig) {
-        strncpy(ext_hdr->sig, hdrs->sig, sizeof ext_hdr->sig);
-        ++changed_fields;
-    }
-
-    if (has_header && le32_to_cpu(ext_hdr->length) != acpi_payload_size) {
-        fprintf(stderr,
-                "warning: ACPI table has wrong length, header says "
-                "%" PRIu32 ", actual size %zu bytes\n",
-                le32_to_cpu(ext_hdr->length), acpi_payload_size);
-    }
-    ext_hdr->length = cpu_to_le32(acpi_payload_size);
-
-    if (hdrs->has_rev) {
-        ext_hdr->revision = hdrs->rev;
-        ++changed_fields;
-    }
-
-    ext_hdr->checksum = 0;
-
-    if (hdrs->has_oem_id) {
-        strncpy(ext_hdr->oem_id, hdrs->oem_id, sizeof ext_hdr->oem_id);
-        ++changed_fields;
-    }
-    if (hdrs->has_oem_table_id) {
-        strncpy(ext_hdr->oem_table_id, hdrs->oem_table_id,
-                sizeof ext_hdr->oem_table_id);
-        ++changed_fields;
-    }
-    if (hdrs->has_oem_rev) {
-        ext_hdr->oem_revision = cpu_to_le32(hdrs->oem_rev);
-        ++changed_fields;
-    }
-    if (hdrs->has_asl_compiler_id) {
-        strncpy(ext_hdr->asl_compiler_id, hdrs->asl_compiler_id,
-                sizeof ext_hdr->asl_compiler_id);
-        ++changed_fields;
-    }
-    if (hdrs->has_asl_compiler_rev) {
-        ext_hdr->asl_compiler_revision = cpu_to_le32(hdrs->asl_compiler_rev);
-        ++changed_fields;
-    }
-
-    if (!has_header && changed_fields == 0) {
-        fprintf(stderr, "warning: ACPI table: no headers are specified\n");
-    }
-
-    /* recalculate checksum */
-    ext_hdr->checksum = acpi_checksum((const char unsigned *)ext_hdr +
-                                      ACPI_TABLE_PFX_SIZE, acpi_payload_size);
-}
-
-void acpi_table_add(const QemuOpts *opts, Error **errp)
-{
-    AcpiTableOptions *hdrs = NULL;
-    Error *err = NULL;
-    char **pathnames = NULL;
-    char **cur;
-    size_t bloblen = 0;
-    char unsigned *blob = NULL;
-
-    {
-        OptsVisitor *ov;
-
-        ov = opts_visitor_new(opts);
-        visit_type_AcpiTableOptions(opts_get_visitor(ov), NULL, &hdrs, &err);
-        opts_visitor_cleanup(ov);
-    }
-
-    if (err) {
-        goto out;
-    }
-    if (hdrs->has_file == hdrs->has_data) {
-        error_setg(&err, "'-acpitable' requires one of 'data' or 'file'");
-        goto out;
-    }
-
-    pathnames = g_strsplit(hdrs->has_file ? hdrs->file : hdrs->data, ":", 0);
-    if (pathnames == NULL || pathnames[0] == NULL) {
-        error_setg(&err, "'-acpitable' requires at least one pathname");
-        goto out;
-    }
-
-    /* now read in the data files, reallocating buffer as needed */
-    for (cur = pathnames; *cur; ++cur) {
-        int fd = open(*cur, O_RDONLY | O_BINARY);
-
-        if (fd < 0) {
-            error_setg(&err, "can't open file %s: %s", *cur, strerror(errno));
-            goto out;
-        }
-
-        for (;;) {
-            char unsigned data[8192];
-            ssize_t r;
-
-            r = read(fd, data, sizeof data);
-            if (r == 0) {
-                break;
-            } else if (r > 0) {
-                blob = g_realloc(blob, bloblen + r);
-                memcpy(blob + bloblen, data, r);
-                bloblen += r;
-            } else if (errno != EINTR) {
-                error_setg(&err, "can't read file %s: %s",
-                           *cur, strerror(errno));
-                close(fd);
-                goto out;
-            }
-        }
-
-        close(fd);
-    }
-
-    acpi_table_install(blob, bloblen, hdrs->has_file, hdrs, &err);
-
-out:
-    g_free(blob);
-    g_strfreev(pathnames);
-    qapi_free_AcpiTableOptions(hdrs);
-
-    error_propagate(errp, err);
-}
-
-static bool acpi_table_builtin = false;
-
-void acpi_table_add_builtin(const QemuOpts *opts, Error **errp)
-{
-    acpi_table_builtin = true;
-    acpi_table_add(opts, errp);
-}
-
-unsigned acpi_table_len(void *current)
-{
-    struct acpi_table_header *hdr = current - sizeof(hdr->_length);
-    return hdr->_length;
-}
-
-static
-void *acpi_table_hdr(void *h)
-{
-    struct acpi_table_header *hdr = h;
-    return &hdr->sig;
-}
-
-uint8_t *acpi_table_first(void)
-{
-    if (acpi_table_builtin || !acpi_tables) {
-        return NULL;
-    }
-    return acpi_table_hdr(acpi_tables + ACPI_TABLE_PFX_SIZE);
-}
-
-uint8_t *acpi_table_next(uint8_t *current)
-{
-    uint8_t *next = current + acpi_table_len(current);
-
-    if (next - acpi_tables >= acpi_tables_len) {
-        return NULL;
-    } else {
-        return acpi_table_hdr(next);
-    }
-}
-
-int acpi_get_slic_oem(AcpiSlicOem *oem)
-{
-    uint8_t *u;
-
-    for (u = acpi_table_first(); u; u = acpi_table_next(u)) {
-        struct acpi_table_header *hdr = (void *)(u - sizeof(hdr->_length));
-
-        if (memcmp(hdr->sig, "SLIC", 4) == 0) {
-            oem->id = hdr->oem_id;
-            oem->table_id = hdr->oem_table_id;
-            return 0;
-        }
-    }
-    return -1;
-}
-
-static void acpi_notify_wakeup(Notifier *notifier, void *data)
-{
-    ACPIREGS *ar = container_of(notifier, ACPIREGS, wakeup);
-    WakeupReason *reason = data;
-
-    switch (*reason) {
-    case QEMU_WAKEUP_REASON_RTC:
-        ar->pm1.evt.sts |=
-            (ACPI_BITMASK_WAKE_STATUS | ACPI_BITMASK_RT_CLOCK_STATUS);
-        break;
-    case QEMU_WAKEUP_REASON_PMTIMER:
-        ar->pm1.evt.sts |=
-            (ACPI_BITMASK_WAKE_STATUS | ACPI_BITMASK_TIMER_STATUS);
-        break;
-    case QEMU_WAKEUP_REASON_OTHER:
-        /* ACPI_BITMASK_WAKE_STATUS should be set on resume.
-           Pretend that resume was caused by power button */
-        ar->pm1.evt.sts |=
-            (ACPI_BITMASK_WAKE_STATUS | ACPI_BITMASK_POWER_BUTTON_STATUS);
-        break;
-    default:
-        break;
-    }
-}
-
-/* ACPI PM1a EVT */
-uint16_t acpi_pm1_evt_get_sts(ACPIREGS *ar)
-{
-    /* Compare ns-clock, not PM timer ticks, because
-       acpi_pm_tmr_update function uses ns for setting the timer. */
-    int64_t d = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
-    if (d >= muldiv64(ar->tmr.overflow_time,
-                      NANOSECONDS_PER_SECOND, PM_TIMER_FREQUENCY)) {
-        ar->pm1.evt.sts |= ACPI_BITMASK_TIMER_STATUS;
-    }
-    return ar->pm1.evt.sts;
-}
-
-static void acpi_pm1_evt_write_sts(ACPIREGS *ar, uint16_t val)
-{
-    uint16_t pm1_sts = acpi_pm1_evt_get_sts(ar);
-    if (pm1_sts & val & ACPI_BITMASK_TIMER_STATUS) {
-        /* if TMRSTS is reset, then compute the new overflow time */
-        acpi_pm_tmr_calc_overflow_time(ar);
-    }
-    ar->pm1.evt.sts &= ~val;
-}
-
-static void acpi_pm1_evt_write_en(ACPIREGS *ar, uint16_t val)
-{
-    ar->pm1.evt.en = val;
-    qemu_system_wakeup_enable(QEMU_WAKEUP_REASON_RTC,
-                              val & ACPI_BITMASK_RT_CLOCK_ENABLE);
-    qemu_system_wakeup_enable(QEMU_WAKEUP_REASON_PMTIMER,
-                              val & ACPI_BITMASK_TIMER_ENABLE);
-}
-
-void acpi_pm1_evt_power_down(ACPIREGS *ar)
-{
-    if (ar->pm1.evt.en & ACPI_BITMASK_POWER_BUTTON_ENABLE) {
-        ar->pm1.evt.sts |= ACPI_BITMASK_POWER_BUTTON_STATUS;
-        ar->tmr.update_sci(ar);
-    }
-}
-
-void acpi_pm1_evt_reset(ACPIREGS *ar)
-{
-    ar->pm1.evt.sts = 0;
-    ar->pm1.evt.en = 0;
-    qemu_system_wakeup_enable(QEMU_WAKEUP_REASON_RTC, 0);
-    qemu_system_wakeup_enable(QEMU_WAKEUP_REASON_PMTIMER, 0);
-}
-
-static uint64_t acpi_pm_evt_read(void *opaque, hwaddr addr, unsigned width)
-{
-    ACPIREGS *ar = opaque;
-    switch (addr) {
-    case 0:
-        return acpi_pm1_evt_get_sts(ar);
-    case 2:
-        return ar->pm1.evt.en;
-    default:
-        return 0;
-    }
-}
-
-static void acpi_pm_evt_write(void *opaque, hwaddr addr, uint64_t val,
-                              unsigned width)
-{
-    ACPIREGS *ar = opaque;
-    switch (addr) {
-    case 0:
-        acpi_pm1_evt_write_sts(ar, val);
-        ar->pm1.evt.update_sci(ar);
-        break;
-    case 2:
-        acpi_pm1_evt_write_en(ar, val);
-        ar->pm1.evt.update_sci(ar);
-        break;
-    }
-}
-
-static const MemoryRegionOps acpi_pm_evt_ops = {
-    .read = acpi_pm_evt_read,
-    .write = acpi_pm_evt_write,
-    .valid.min_access_size = 2,
-    .valid.max_access_size = 2,
-    .endianness = DEVICE_LITTLE_ENDIAN,
-};
-
-void acpi_pm1_evt_init(ACPIREGS *ar, acpi_update_sci_fn update_sci,
-                       MemoryRegion *parent)
-{
-    ar->pm1.evt.update_sci = update_sci;
-    memory_region_init_io(&ar->pm1.evt.io, memory_region_owner(parent),
-                          &acpi_pm_evt_ops, ar, "acpi-evt", 4);
-    memory_region_add_subregion(parent, 0, &ar->pm1.evt.io);
-}
-
-/* ACPI PM_TMR */
-void acpi_pm_tmr_update(ACPIREGS *ar, bool enable)
-{
-    int64_t expire_time;
-
-    /* schedule a timer interruption if needed */
-    if (enable) {
-        expire_time = muldiv64(ar->tmr.overflow_time, NANOSECONDS_PER_SECOND,
-                               PM_TIMER_FREQUENCY);
-        timer_mod(ar->tmr.timer, expire_time);
-    } else {
-        timer_del(ar->tmr.timer);
-    }
-}
-
-void acpi_pm_tmr_calc_overflow_time(ACPIREGS *ar)
-{
-    int64_t d = acpi_pm_tmr_get_clock();
-    ar->tmr.overflow_time = (d + 0x800000LL) & ~0x7fffffLL;
-}
-
-static uint32_t acpi_pm_tmr_get(ACPIREGS *ar)
-{
-    uint32_t d = acpi_pm_tmr_get_clock();
-    return d & 0xffffff;
-}
-
-static void acpi_pm_tmr_timer(void *opaque)
-{
-    ACPIREGS *ar = opaque;
-    qemu_system_wakeup_request(QEMU_WAKEUP_REASON_PMTIMER);
-    ar->tmr.update_sci(ar);
-}
-
-static uint64_t acpi_pm_tmr_read(void *opaque, hwaddr addr, unsigned width)
-{
-    return acpi_pm_tmr_get(opaque);
-}
-
-static void acpi_pm_tmr_write(void *opaque, hwaddr addr, uint64_t val,
-                              unsigned width)
-{
-    /* nothing */
-}
-
-static const MemoryRegionOps acpi_pm_tmr_ops = {
-    .read = acpi_pm_tmr_read,
-    .write = acpi_pm_tmr_write,
-    .valid.min_access_size = 4,
-    .valid.max_access_size = 4,
-    .endianness = DEVICE_LITTLE_ENDIAN,
-};
-
-void acpi_pm_tmr_init(ACPIREGS *ar, acpi_update_sci_fn update_sci,
-                      MemoryRegion *parent)
-{
-    ar->tmr.update_sci = update_sci;
-    ar->tmr.timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, acpi_pm_tmr_timer, ar);
-    memory_region_init_io(&ar->tmr.io, memory_region_owner(parent),
-                          &acpi_pm_tmr_ops, ar, "acpi-tmr", 4);
-    memory_region_add_subregion(parent, 8, &ar->tmr.io);
-}
-
-void acpi_pm_tmr_reset(ACPIREGS *ar)
-{
-    ar->tmr.overflow_time = 0;
-    timer_del(ar->tmr.timer);
-}
-
-/* ACPI PM1aCNT */
-static void acpi_pm1_cnt_write(ACPIREGS *ar, uint16_t val)
-{
-    ar->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:
-            qemu_system_suspend_request();
-            break;
-        default:
-            if (sus_typ == ar->pm1.cnt.s4_val) { /* S4 request */
-                qapi_event_send_suspend_disk(&error_abort);
-                qemu_system_shutdown_request();
-            }
-            break;
-        }
-    }
-}
-
-void acpi_pm1_cnt_update(ACPIREGS *ar,
-                         bool sci_enable, bool sci_disable)
-{
-    /* ACPI specs 3.0, 4.7.2.5 */
-    if (sci_enable) {
-        ar->pm1.cnt.cnt |= ACPI_BITMASK_SCI_ENABLE;
-    } else if (sci_disable) {
-        ar->pm1.cnt.cnt &= ~ACPI_BITMASK_SCI_ENABLE;
-    }
-}
-
-static uint64_t acpi_pm_cnt_read(void *opaque, hwaddr addr, unsigned width)
-{
-    ACPIREGS *ar = opaque;
-    return ar->pm1.cnt.cnt;
-}
-
-static void acpi_pm_cnt_write(void *opaque, hwaddr addr, uint64_t val,
-                              unsigned width)
-{
-    acpi_pm1_cnt_write(opaque, val);
-}
-
-static const MemoryRegionOps acpi_pm_cnt_ops = {
-    .read = acpi_pm_cnt_read,
-    .write = acpi_pm_cnt_write,
-    .valid.min_access_size = 2,
-    .valid.max_access_size = 2,
-    .endianness = DEVICE_LITTLE_ENDIAN,
-};
-
-void acpi_pm1_cnt_init(ACPIREGS *ar, MemoryRegion *parent,
-                       bool disable_s3, bool disable_s4, uint8_t s4_val)
-{
-    FWCfgState *fw_cfg;
-
-    ar->pm1.cnt.s4_val = s4_val;
-    ar->wakeup.notify = acpi_notify_wakeup;
-    qemu_register_wakeup_notifier(&ar->wakeup);
-    memory_region_init_io(&ar->pm1.cnt.io, memory_region_owner(parent),
-                          &acpi_pm_cnt_ops, ar, "acpi-cnt", 2);
-    memory_region_add_subregion(parent, 4, &ar->pm1.cnt.io);
-
-    fw_cfg = fw_cfg_find();
-    if (fw_cfg) {
-        uint8_t suspend[6] = {128, 0, 0, 129, 128, 128};
-        suspend[3] = 1 | ((!disable_s3) << 7);
-        suspend[4] = s4_val | ((!disable_s4) << 7);
-
-        fw_cfg_add_file(fw_cfg, "etc/system-states", g_memdup(suspend, 6), 6);
-    }
-}
-
-void acpi_pm1_cnt_reset(ACPIREGS *ar)
-{
-    ar->pm1.cnt.cnt = 0;
-}
-
-/* ACPI GPE */
-void acpi_gpe_init(ACPIREGS *ar, uint8_t len)
-{
-    ar->gpe.len = len;
-    /* Only first len / 2 bytes are ever used,
-     * but the caller in ich9.c migrates full len bytes.
-     * TODO: fix ich9.c and drop the extra allocation.
-     */
-    ar->gpe.sts = g_malloc0(len);
-    ar->gpe.en = g_malloc0(len);
-}
-
-void acpi_gpe_reset(ACPIREGS *ar)
-{
-    memset(ar->gpe.sts, 0, ar->gpe.len / 2);
-    memset(ar->gpe.en, 0, ar->gpe.len / 2);
-}
-
-static uint8_t *acpi_gpe_ioport_get_ptr(ACPIREGS *ar, uint32_t addr)
-{
-    uint8_t *cur = NULL;
-
-    if (addr < ar->gpe.len / 2) {
-        cur = ar->gpe.sts + addr;
-    } else if (addr < ar->gpe.len) {
-        cur = ar->gpe.en + addr - ar->gpe.len / 2;
-    } else {
-        abort();
-    }
-
-    return cur;
-}
-
-void acpi_gpe_ioport_writeb(ACPIREGS *ar, uint32_t addr, uint32_t val)
-{
-    uint8_t *cur;
-
-    cur = acpi_gpe_ioport_get_ptr(ar, addr);
-    if (addr < ar->gpe.len / 2) {
-        /* GPE_STS */
-        *cur = (*cur) & ~val;
-    } else if (addr < ar->gpe.len) {
-        /* GPE_EN */
-        *cur = val;
-    } else {
-        abort();
-    }
-}
-
-uint32_t acpi_gpe_ioport_readb(ACPIREGS *ar, uint32_t addr)
-{
-    uint8_t *cur;
-    uint32_t val;
-
-    cur = acpi_gpe_ioport_get_ptr(ar, addr);
-    val = 0;
-    if (cur != NULL) {
-        val = *cur;
-    }
-
-    return val;
-}
-
-void acpi_send_gpe_event(ACPIREGS *ar, qemu_irq irq,
-                         AcpiGPEStatusBits status)
-{
-    ar->gpe.sts[0] |= status;
-    acpi_update_sci(ar, irq);
-}
-
-void acpi_update_sci(ACPIREGS *regs, qemu_irq irq)
-{
-    int sci_level, pm1a_sts;
-
-    pm1a_sts = acpi_pm1_evt_get_sts(regs);
-
-    sci_level = ((pm1a_sts &
-                  regs->pm1.evt.en & ACPI_BITMASK_PM1_COMMON_ENABLED) != 0) ||
-                ((regs->gpe.sts[0] & regs->gpe.en[0]) != 0);
-
-    qemu_set_irq(irq, sci_level);
-
-    /* schedule a timer interruption if needed */
-    acpi_pm_tmr_update(regs,
-                       (regs->pm1.evt.en & ACPI_BITMASK_TIMER_ENABLE) &&
-                       !(pm1a_sts & ACPI_BITMASK_TIMER_STATUS));
-}