Exemple #1
23
static uint8_t fw_cfg_read(FWCfgState *s)
{
    int arch = !!(s->cur_entry & FW_CFG_ARCH_LOCAL);
    FWCfgEntry *e = &s->entries[arch][s->cur_entry & FW_CFG_ENTRY_MASK];
    uint8_t ret;

    if (s->cur_entry == FW_CFG_INVALID || !e->data || s->cur_offset >= e->len)
        ret = 0;
    else {
        if (e->read_callback) {
            e->read_callback(e->callback_opaque, s->cur_offset);
        }
        ret = e->data[s->cur_offset++];
    }

    trace_fw_cfg_read(s, ret);
    return ret;
}
Exemple #2
0
static void fw_cfg_write(FWCfgState *s, uint8_t value)
{
    int arch = !!(s->cur_entry & FW_CFG_ARCH_LOCAL);
    FWCfgEntry *e = &s->entries[arch][s->cur_entry & FW_CFG_ENTRY_MASK];

    FW_CFG_DPRINTF("write %d\n", value);

    if (s->cur_entry & FW_CFG_WRITE_CHANNEL && s->cur_offset < e->len) {
        e->data[s->cur_offset++] = value;
        if (s->cur_offset == e->len) {
            e->callback(e->callback_opaque, e->data);
            s->cur_offset = 0;
        }
    }
}
Exemple #3
0
static int fw_cfg_select(FWCfgState *s, uint16_t key)
{
    int arch, ret;
    FWCfgEntry *e;

    s->cur_offset = 0;
    if ((key & FW_CFG_ENTRY_MASK) >= fw_cfg_max_entry(s)) {
        s->cur_entry = FW_CFG_INVALID;
        ret = 0;
    } else {
        s->cur_entry = key;
        ret = 1;
        /* entry successfully selected, now run callback if present */
        arch = !!(key & FW_CFG_ARCH_LOCAL);
        e = &s->entries[arch][key & FW_CFG_ENTRY_MASK];
        if (e->select_cb) {
            e->select_cb(e->callback_opaque);
        }
    }

    trace_fw_cfg_select(s, key, ret);
    return ret;
}