Archipelago » qemu

#include "net.h"

#include "qdev.h"

#include "qerror.h"

#include "blockdev.h"

void *qdev_get_prop_ptr(DeviceState *dev, Property *prop)

{

    void *ptr = dev;

    ptr += prop->offset;

    return ptr;

}

static uint32_t qdev_get_prop_mask(Property *prop)

{

    assert(prop->info->type == PROP_TYPE_BIT);

    return 0x1 << prop->bitnr;

}

static void bit_prop_set(DeviceState *dev, Property *props, bool val)

{

    uint32_t *p = qdev_get_prop_ptr(dev, props);

    uint32_t mask = qdev_get_prop_mask(props);

    if (val)

        *p |= mask;

    else

        *p &= ~mask;

}

static void qdev_prop_cpy(DeviceState *dev, Property *props, void *src)

{

    if (props->info->type == PROP_TYPE_BIT) {

        bool *defval = src;

        bit_prop_set(dev, props, *defval);

    } else {

        char *dst = qdev_get_prop_ptr(dev, props);

        memcpy(dst, src, props->info->size);

    }

}

/* Bit */

static int parse_bit(DeviceState *dev, Property *prop, const char *str)

{

    if (!strncasecmp(str, "on", 2))

        bit_prop_set(dev, prop, true);

    else if (!strncasecmp(str, "off", 3))

        bit_prop_set(dev, prop, false);

    else

        return -EINVAL;

    return 0;

}

static int print_bit(DeviceState *dev, Property *prop, char *dest, size_t len)

{

    uint32_t *p = qdev_get_prop_ptr(dev, prop);

    return snprintf(dest, len, (*p & qdev_get_prop_mask(prop)) ? "on" : "off");

}

PropertyInfo qdev_prop_bit = {

    .name  = "on/off",

    .type  = PROP_TYPE_BIT,

    .size  = sizeof(uint32_t),

    .parse = parse_bit,

    .print = print_bit,

};

/* --- 8bit integer --- */

static int parse_uint8(DeviceState *dev, Property *prop, const char *str)

{

    uint8_t *ptr = qdev_get_prop_ptr(dev, prop);

    char *end;

    /* accept both hex and decimal */

    *ptr = strtoul(str, &end, 0);

    if ((*end != '\0') || (end == str)) {

        return -EINVAL;

    }

    return 0;

}

static int print_uint8(DeviceState *dev, Property *prop, char *dest, size_t len)

{

    uint8_t *ptr = qdev_get_prop_ptr(dev, prop);

    return snprintf(dest, len, "%" PRIu8, *ptr);

}

PropertyInfo qdev_prop_uint8 = {

    .name  = "uint8",

    .type  = PROP_TYPE_UINT8,

    .size  = sizeof(uint8_t),

    .parse = parse_uint8,

    .print = print_uint8,

};

/* --- 16bit integer --- */

static int parse_uint16(DeviceState *dev, Property *prop, const char *str)

{

    uint16_t *ptr = qdev_get_prop_ptr(dev, prop);

    char *end;

    /* accept both hex and decimal */

    *ptr = strtoul(str, &end, 0);

    if ((*end != '\0') || (end == str)) {

        return -EINVAL;

    }

    return 0;

}

static int print_uint16(DeviceState *dev, Property *prop, char *dest, size_t len)

{

    uint16_t *ptr = qdev_get_prop_ptr(dev, prop);

    return snprintf(dest, len, "%" PRIu16, *ptr);

}

PropertyInfo qdev_prop_uint16 = {

    .name  = "uint16",

    .type  = PROP_TYPE_UINT16,

    .size  = sizeof(uint16_t),

    .parse = parse_uint16,

    .print = print_uint16,

};

/* --- 32bit integer --- */

static int parse_uint32(DeviceState *dev, Property *prop, const char *str)

{

    uint32_t *ptr = qdev_get_prop_ptr(dev, prop);

    char *end;

    /* accept both hex and decimal */

    *ptr = strtoul(str, &end, 0);

    if ((*end != '\0') || (end == str)) {

        return -EINVAL;

    }

    return 0;

}

static int print_uint32(DeviceState *dev, Property *prop, char *dest, size_t len)

{

    uint32_t *ptr = qdev_get_prop_ptr(dev, prop);

    return snprintf(dest, len, "%" PRIu32, *ptr);

}

PropertyInfo qdev_prop_uint32 = {

    .name  = "uint32",

    .type  = PROP_TYPE_UINT32,

    .size  = sizeof(uint32_t),

    .parse = parse_uint32,

    .print = print_uint32,

};

static int parse_int32(DeviceState *dev, Property *prop, const char *str)

{

    int32_t *ptr = qdev_get_prop_ptr(dev, prop);

    char *end;

    *ptr = strtol(str, &end, 10);

    if ((*end != '\0') || (end == str)) {

        return -EINVAL;

    }

    return 0;

}

static int print_int32(DeviceState *dev, Property *prop, char *dest, size_t len)

{

    int32_t *ptr = qdev_get_prop_ptr(dev, prop);

    return snprintf(dest, len, "%" PRId32, *ptr);

}

PropertyInfo qdev_prop_int32 = {

    .name  = "int32",

    .type  = PROP_TYPE_INT32,

    .size  = sizeof(int32_t),

    .parse = parse_int32,

    .print = print_int32,

};

/* --- 32bit hex value --- */

static int parse_hex32(DeviceState *dev, Property *prop, const char *str)

{

    uint32_t *ptr = qdev_get_prop_ptr(dev, prop);

    char *end;

    *ptr = strtoul(str, &end, 16);

    if ((*end != '\0') || (end == str)) {

        return -EINVAL;

    }

    return 0;

}

static int print_hex32(DeviceState *dev, Property *prop, char *dest, size_t len)

{

    uint32_t *ptr = qdev_get_prop_ptr(dev, prop);

    return snprintf(dest, len, "0x%" PRIx32, *ptr);

}

PropertyInfo qdev_prop_hex32 = {

    .name  = "hex32",

    .type  = PROP_TYPE_UINT32,

    .size  = sizeof(uint32_t),

    .parse = parse_hex32,

    .print = print_hex32,

};

/* --- 64bit integer --- */

static int parse_uint64(DeviceState *dev, Property *prop, const char *str)

{

    uint64_t *ptr = qdev_get_prop_ptr(dev, prop);

    char *end;

    /* accept both hex and decimal */

    *ptr = strtoull(str, &end, 0);

    if ((*end != '\0') || (end == str)) {

        return -EINVAL;

    }

    return 0;

}

static int print_uint64(DeviceState *dev, Property *prop, char *dest, size_t len)

{

    uint64_t *ptr = qdev_get_prop_ptr(dev, prop);

    return snprintf(dest, len, "%" PRIu64, *ptr);

}

PropertyInfo qdev_prop_uint64 = {

    .name  = "uint64",

    .type  = PROP_TYPE_UINT64,

    .size  = sizeof(uint64_t),

    .parse = parse_uint64,

    .print = print_uint64,

};

/* --- 64bit hex value --- */

static int parse_hex64(DeviceState *dev, Property *prop, const char *str)

{

    uint64_t *ptr = qdev_get_prop_ptr(dev, prop);

    char *end;

    *ptr = strtoull(str, &end, 16);

    if ((*end != '\0') || (end == str)) {

        return -EINVAL;

    }

    return 0;

}

static int print_hex64(DeviceState *dev, Property *prop, char *dest, size_t len)

{

    uint64_t *ptr = qdev_get_prop_ptr(dev, prop);

    return snprintf(dest, len, "0x%" PRIx64, *ptr);

}

PropertyInfo qdev_prop_hex64 = {

    .name  = "hex64",

    .type  = PROP_TYPE_UINT64,

    .size  = sizeof(uint64_t),

    .parse = parse_hex64,

    .print = print_hex64,

};

/* --- string --- */

static int parse_string(DeviceState *dev, Property *prop, const char *str)

{

    char **ptr = qdev_get_prop_ptr(dev, prop);

    if (*ptr)

        qemu_free(*ptr);

    *ptr = qemu_strdup(str);

    return 0;

}

static void free_string(DeviceState *dev, Property *prop)

{

    qemu_free(*(char **)qdev_get_prop_ptr(dev, prop));

}

static int print_string(DeviceState *dev, Property *prop, char *dest, size_t len)

{

    char **ptr = qdev_get_prop_ptr(dev, prop);

    if (!*ptr)

        return snprintf(dest, len, "<null>");

    return snprintf(dest, len, "\"%s\"", *ptr);

}

PropertyInfo qdev_prop_string = {

    .name  = "string",

    .type  = PROP_TYPE_STRING,

    .size  = sizeof(char*),

    .parse = parse_string,

    .print = print_string,

    .free  = free_string,

};

/* --- drive --- */

static int parse_drive(DeviceState *dev, Property *prop, const char *str)

{

    BlockDriverState **ptr = qdev_get_prop_ptr(dev, prop);

    BlockDriverState *bs;

    bs = bdrv_find(str);

    if (bs == NULL)

        return -ENOENT;

    if (bdrv_attach(bs, dev) < 0)

        return -EEXIST;

    *ptr = bs;

    return 0;

}

static void free_drive(DeviceState *dev, Property *prop)

{

    BlockDriverState **ptr = qdev_get_prop_ptr(dev, prop);

    if (*ptr) {

        bdrv_detach(*ptr, dev);

        blockdev_auto_del(*ptr);

    }

}

static int print_drive(DeviceState *dev, Property *prop, char *dest, size_t len)

{

    BlockDriverState **ptr = qdev_get_prop_ptr(dev, prop);

    return snprintf(dest, len, "%s",

                    *ptr ? bdrv_get_device_name(*ptr) : "<null>");

}

PropertyInfo qdev_prop_drive = {

    .name  = "drive",

    .type  = PROP_TYPE_DRIVE,

    .size  = sizeof(BlockDriverState *),

    .parse = parse_drive,

    .print = print_drive,

    .free  = free_drive,

};

/* --- character device --- */

static int parse_chr(DeviceState *dev, Property *prop, const char *str)

{

    CharDriverState **ptr = qdev_get_prop_ptr(dev, prop);

    *ptr = qemu_chr_find(str);

    if (*ptr == NULL) {

        return -ENOENT;

    }

    if ((*ptr)->avail_connections < 1) {

        return -EEXIST;

    }

    --(*ptr)->avail_connections;

    return 0;

}

static int print_chr(DeviceState *dev, Property *prop, char *dest, size_t len)

{

    CharDriverState **ptr = qdev_get_prop_ptr(dev, prop);

    if (*ptr && (*ptr)->label) {

        return snprintf(dest, len, "%s", (*ptr)->label);

    } else {

        return snprintf(dest, len, "<null>");

    }

}

PropertyInfo qdev_prop_chr = {

    .name  = "chr",

    .type  = PROP_TYPE_CHR,

    .size  = sizeof(CharDriverState*),

    .parse = parse_chr,

    .print = print_chr,

};

/* --- netdev device --- */

static int parse_netdev(DeviceState *dev, Property *prop, const char *str)

{

    VLANClientState **ptr = qdev_get_prop_ptr(dev, prop);

    *ptr = qemu_find_netdev(str);

    if (*ptr == NULL)

        return -ENOENT;

    if ((*ptr)->peer) {

        return -EEXIST;

    }

    return 0;

}

static int print_netdev(DeviceState *dev, Property *prop, char *dest, size_t len)

{

    VLANClientState **ptr = qdev_get_prop_ptr(dev, prop);

    if (*ptr && (*ptr)->name) {

        return snprintf(dest, len, "%s", (*ptr)->name);

    } else {

        return snprintf(dest, len, "<null>");

    }

}

PropertyInfo qdev_prop_netdev = {

    .name  = "netdev",

    .type  = PROP_TYPE_NETDEV,

    .size  = sizeof(VLANClientState*),

    .parse = parse_netdev,

    .print = print_netdev,

};

/* --- vlan --- */

static int parse_vlan(DeviceState *dev, Property *prop, const char *str)

{

    VLANState **ptr = qdev_get_prop_ptr(dev, prop);

    int id;

    if (sscanf(str, "%d", &id) != 1)

        return -EINVAL;

    *ptr = qemu_find_vlan(id, 1);

    if (*ptr == NULL)

        return -ENOENT;

    return 0;

}

static int print_vlan(DeviceState *dev, Property *prop, char *dest, size_t len)

{

    VLANState **ptr = qdev_get_prop_ptr(dev, prop);

    if (*ptr) {

        return snprintf(dest, len, "%d", (*ptr)->id);

    } else {

        return snprintf(dest, len, "<null>");

    }

}

PropertyInfo qdev_prop_vlan = {

    .name  = "vlan",

    .type  = PROP_TYPE_VLAN,

    .size  = sizeof(VLANClientState*),

    .parse = parse_vlan,

    .print = print_vlan,

};

/* --- pointer --- */

/* Not a proper property, just for dirty hacks.  TODO Remove it!  */

PropertyInfo qdev_prop_ptr = {

    .name  = "ptr",

    .type  = PROP_TYPE_PTR,

    .size  = sizeof(void*),

};

/* --- mac address --- */

/*

 * accepted syntax versions:

 *   01:02:03:04:05:06

 *   01-02-03-04-05-06

 */

static int parse_mac(DeviceState *dev, Property *prop, const char *str)

{

    MACAddr *mac = qdev_get_prop_ptr(dev, prop);

    int i, pos;

    char *p;

    for (i = 0, pos = 0; i < 6; i++, pos += 3) {

        if (!qemu_isxdigit(str[pos]))

            return -EINVAL;

        if (!qemu_isxdigit(str[pos+1]))

            return -EINVAL;

        if (i == 5) {

            if (str[pos+2] != '\0')

                return -EINVAL;

        } else {

            if (str[pos+2] != ':' && str[pos+2] != '-')

                return -EINVAL;

        }

        mac->a[i] = strtol(str+pos, &p, 16);

    }

    return 0;

}

static int print_mac(DeviceState *dev, Property *prop, char *dest, size_t len)

{

    MACAddr *mac = qdev_get_prop_ptr(dev, prop);

    return snprintf(dest, len, "%02x:%02x:%02x:%02x:%02x:%02x",

                    mac->a[0], mac->a[1], mac->a[2],

                    mac->a[3], mac->a[4], mac->a[5]);

}

PropertyInfo qdev_prop_macaddr = {

    .name  = "macaddr",

    .type  = PROP_TYPE_MACADDR,

    .size  = sizeof(MACAddr),

    .parse = parse_mac,

    .print = print_mac,

};

/* --- pci address --- */

/*

 * bus-local address, i.e. "$slot" or "$slot.$fn"

 */

static int parse_pci_devfn(DeviceState *dev, Property *prop, const char *str)

{

    uint32_t *ptr = qdev_get_prop_ptr(dev, prop);

    unsigned int slot, fn, n;

    if (sscanf(str, "%x.%x%n", &slot, &fn, &n) != 2) {

        fn = 0;

        if (sscanf(str, "%x%n", &slot, &n) != 1) {

            return -EINVAL;

        }

    }

    if (str[n] != '\0')

        return -EINVAL;

    if (fn > 7)

        return -EINVAL;

    *ptr = slot << 3 | fn;

    return 0;

}

static int print_pci_devfn(DeviceState *dev, Property *prop, char *dest, size_t len)

{

    uint32_t *ptr = qdev_get_prop_ptr(dev, prop);

    if (*ptr == -1) {

        return snprintf(dest, len, "<unset>");

    } else {

        return snprintf(dest, len, "%02x.%x", *ptr >> 3, *ptr & 7);

    }

}

PropertyInfo qdev_prop_pci_devfn = {

    .name  = "pci-devfn",

    .type  = PROP_TYPE_UINT32,

    .size  = sizeof(uint32_t),

    .parse = parse_pci_devfn,

    .print = print_pci_devfn,

};

/* --- public helpers --- */

static Property *qdev_prop_walk(Property *props, const char *name)

{

    if (!props)

        return NULL;

    while (props->name) {

        if (strcmp(props->name, name) == 0)

            return props;

        props++;

    }

    return NULL;

}

static Property *qdev_prop_find(DeviceState *dev, const char *name)

{

    Property *prop;

    /* device properties */

    prop = qdev_prop_walk(dev->info->props, name);

    if (prop)

        return prop;

    /* bus properties */

    prop = qdev_prop_walk(dev->parent_bus->info->props, name);

    if (prop)

        return prop;

    return NULL;

}

int qdev_prop_exists(DeviceState *dev, const char *name)

{

    return qdev_prop_find(dev, name) ? true : false;

}

int qdev_prop_parse(DeviceState *dev, const char *name, const char *value)

{

    Property *prop;

    int ret;

    prop = qdev_prop_find(dev, name);

    /*

     * TODO Properties without a parse method are just for dirty

     * hacks.  qdev_prop_ptr is the only such PropertyInfo.  It's

     * marked for removal.  The test !prop->info->parse should be

     * removed along with it.

     */

    if (!prop || !prop->info->parse) {

        qerror_report(QERR_PROPERTY_NOT_FOUND, dev->info->name, name);

        return -1;

    }

    ret = prop->info->parse(dev, prop, value);

    if (ret < 0) {

        switch (ret) {

        case -EEXIST:

            qerror_report(QERR_PROPERTY_VALUE_IN_USE,

                          dev->info->name, name, value);

            break;

        default:

        case -EINVAL:

            qerror_report(QERR_PROPERTY_VALUE_BAD,

                          dev->info->name, name, value);

            break;

        case -ENOENT:

            qerror_report(QERR_PROPERTY_VALUE_NOT_FOUND,

                          dev->info->name, name, value);

            break;

        }

        return -1;

    }

    return 0;

}

void qdev_prop_set(DeviceState *dev, const char *name, void *src, enum PropertyType type)

{

    Property *prop;

    prop = qdev_prop_find(dev, name);

    if (!prop) {

        fprintf(stderr, "%s: property \"%s.%s\" not found\n",

                __FUNCTION__, dev->info->name, name);

        abort();

    }

    if (prop->info->type != type) {

        fprintf(stderr, "%s: property \"%s.%s\" type mismatch\n",

                __FUNCTION__, dev->info->name, name);

        abort();

    }

    qdev_prop_cpy(dev, prop, src);

}

void qdev_prop_set_bit(DeviceState *dev, const char *name, bool value)

{

    qdev_prop_set(dev, name, &value, PROP_TYPE_BIT);

}

void qdev_prop_set_uint8(DeviceState *dev, const char *name, uint8_t value)

{

    qdev_prop_set(dev, name, &value, PROP_TYPE_UINT8);

}

void qdev_prop_set_uint16(DeviceState *dev, const char *name, uint16_t value)

{

    qdev_prop_set(dev, name, &value, PROP_TYPE_UINT16);

}

void qdev_prop_set_uint32(DeviceState *dev, const char *name, uint32_t value)

{

    qdev_prop_set(dev, name, &value, PROP_TYPE_UINT32);

}

void qdev_prop_set_int32(DeviceState *dev, const char *name, int32_t value)

{

    qdev_prop_set(dev, name, &value, PROP_TYPE_INT32);

}

void qdev_prop_set_uint64(DeviceState *dev, const char *name, uint64_t value)

{

    qdev_prop_set(dev, name, &value, PROP_TYPE_UINT64);

}

void qdev_prop_set_string(DeviceState *dev, const char *name, char *value)

{

    qdev_prop_set(dev, name, &value, PROP_TYPE_STRING);

}

int qdev_prop_set_drive(DeviceState *dev, const char *name, BlockDriverState *value)

{

    int res;

    res = bdrv_attach(value, dev);

    if (res < 0) {

        error_report("Can't attach drive %s to %s.%s: %s",

                     bdrv_get_device_name(value),

                     dev->id ? dev->id : dev->info->name,

                     name, strerror(-res));

        return -1;

    }

    qdev_prop_set(dev, name, &value, PROP_TYPE_DRIVE);

    return 0;

}

void qdev_prop_set_drive_nofail(DeviceState *dev, const char *name, BlockDriverState *value)

{

    if (qdev_prop_set_drive(dev, name, value) < 0) {

        exit(1);

    }

}

void qdev_prop_set_chr(DeviceState *dev, const char *name, CharDriverState *value)

{

    qdev_prop_set(dev, name, &value, PROP_TYPE_CHR);

}

void qdev_prop_set_netdev(DeviceState *dev, const char *name, VLANClientState *value)

{

    qdev_prop_set(dev, name, &value, PROP_TYPE_NETDEV);

}

void qdev_prop_set_vlan(DeviceState *dev, const char *name, VLANState *value)

{

    qdev_prop_set(dev, name, &value, PROP_TYPE_VLAN);

}

void qdev_prop_set_macaddr(DeviceState *dev, const char *name, uint8_t *value)

{

    qdev_prop_set(dev, name, value, PROP_TYPE_MACADDR);

}

void qdev_prop_set_ptr(DeviceState *dev, const char *name, void *value)

{

    qdev_prop_set(dev, name, &value, PROP_TYPE_PTR);

}

void qdev_prop_set_defaults(DeviceState *dev, Property *props)

{

    if (!props)

        return;

    while (props->name) {

        if (props->defval) {

            qdev_prop_cpy(dev, props, props->defval);

        }

        props++;

    }

}

static QTAILQ_HEAD(, GlobalProperty) global_props = QTAILQ_HEAD_INITIALIZER(global_props);

static void qdev_prop_register_global(GlobalProperty *prop)

{

    QTAILQ_INSERT_TAIL(&global_props, prop, next);

}

void qdev_prop_register_global_list(GlobalProperty *props)

{

    int i;

    for (i = 0; props[i].driver != NULL; i++) {

        qdev_prop_register_global(props+i);

    }

}

void qdev_prop_set_globals(DeviceState *dev)

{

    GlobalProperty *prop;

    QTAILQ_FOREACH(prop, &global_props, next) {

        if (strcmp(dev->info->name, prop->driver) != 0 &&

            strcmp(dev->info->bus_info->name, prop->driver) != 0) {

            continue;

        }

        if (qdev_prop_parse(dev, prop->property, prop->value) != 0) {

            exit(1);

        }

    }

}

static int qdev_add_one_global(QemuOpts *opts, void *opaque)

{

    GlobalProperty *g;

    g = qemu_mallocz(sizeof(*g));

    g->driver   = qemu_opt_get(opts, "driver");

    g->property = qemu_opt_get(opts, "property");

    g->value    = qemu_opt_get(opts, "value");

    qdev_prop_register_global(g);

    return 0;

}

void qemu_add_globals(void)

{

    qemu_opts_foreach(qemu_find_opts("global"), qdev_add_one_global, NULL, 0);

}