testmode.c

Go to the documentation of this file.

/*
 * This file is part of wl1271
 *
 * Copyright (C) 2010 Nokia Corporation
 *
 * Contact: Luciano Coelho <[email protected]>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 *
 * This program 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
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 *
 */
#include "testmode.h"

#include <linux/slab.h>
#include <net/genetlink.h>

#include "wlcore.h"
#include "debug.h"
#include "acx.h"
#include "ps.h"
#include "io.h"

#define WL1271_TM_MAX_DATA_LENGTH 1024

enum wl1271_tm_commands {
    WL1271_TM_CMD_UNSPEC,
    WL1271_TM_CMD_TEST,
    WL1271_TM_CMD_INTERROGATE,
    WL1271_TM_CMD_CONFIGURE,
    WL1271_TM_CMD_NVS_PUSH,     /* Not in use. Keep to not break ABI */
    WL1271_TM_CMD_SET_PLT_MODE,
    WL1271_TM_CMD_RECOVER,      /* Not in use. Keep to not break ABI */
    WL1271_TM_CMD_GET_MAC,

    __WL1271_TM_CMD_AFTER_LAST
};
#define WL1271_TM_CMD_MAX (__WL1271_TM_CMD_AFTER_LAST - 1)

enum wl1271_tm_attrs {
    WL1271_TM_ATTR_UNSPEC,
    WL1271_TM_ATTR_CMD_ID,
    WL1271_TM_ATTR_ANSWER,
    WL1271_TM_ATTR_DATA,
    WL1271_TM_ATTR_IE_ID,
    WL1271_TM_ATTR_PLT_MODE,

    __WL1271_TM_ATTR_AFTER_LAST
};
#define WL1271_TM_ATTR_MAX (__WL1271_TM_ATTR_AFTER_LAST - 1)

static struct nla_policy wl1271_tm_policy[WL1271_TM_ATTR_MAX + 1] = {
    [WL1271_TM_ATTR_CMD_ID] =   { .type = NLA_U32 },
    [WL1271_TM_ATTR_ANSWER] =   { .type = NLA_U8 },
    [WL1271_TM_ATTR_DATA] =     { .type = NLA_BINARY,
                      .len = WL1271_TM_MAX_DATA_LENGTH },
    [WL1271_TM_ATTR_IE_ID] =    { .type = NLA_U32 },
    [WL1271_TM_ATTR_PLT_MODE] = { .type = NLA_U32 },
};


static int wl1271_tm_cmd_test(struct wl1271 *wl, struct nlattr *tb[])
{
    int buf_len, ret, len;
    struct sk_buff *skb;
    void *buf;
    u8 answer = 0;

    wl1271_debug(DEBUG_TESTMODE, "testmode cmd test");

    if (!tb[WL1271_TM_ATTR_DATA])
        return -EINVAL;

    buf = nla_data(tb[WL1271_TM_ATTR_DATA]);
    buf_len = nla_len(tb[WL1271_TM_ATTR_DATA]);

    if (tb[WL1271_TM_ATTR_ANSWER])
        answer = nla_get_u8(tb[WL1271_TM_ATTR_ANSWER]);

    if (buf_len > sizeof(struct wl1271_command))
        return -EMSGSIZE;

    mutex_lock(&wl->mutex);

    if (unlikely(wl->state != WLCORE_STATE_ON)) {
        ret = -EINVAL;
        goto out;
    }

    ret = wl1271_ps_elp_wakeup(wl);
    if (ret < 0)
        goto out;

    ret = wl1271_cmd_test(wl, buf, buf_len, answer);
    if (ret < 0) {
        wl1271_warning("testmode cmd test failed: %d", ret);
        goto out_sleep;
    }

    if (answer) {
        /* If we got bip calibration answer print radio status */
        struct wl1271_cmd_cal_p2g *params =
            (struct wl1271_cmd_cal_p2g *) buf;

        s16 radio_status = (s16) le16_to_cpu(params->radio_status);

        if (params->test.id == TEST_CMD_P2G_CAL &&
            radio_status < 0)
            wl1271_warning("testmode cmd: radio status=%d",
                    radio_status);
        else
            wl1271_info("testmode cmd: radio status=%d",
                    radio_status);

        len = nla_total_size(buf_len);
        skb = cfg80211_testmode_alloc_reply_skb(wl->hw->wiphy, len);
        if (!skb) {
            ret = -ENOMEM;
            goto out_sleep;
        }

        if (nla_put(skb, WL1271_TM_ATTR_DATA, buf_len, buf)) {
            kfree_skb(skb);
            ret = -EMSGSIZE;
            goto out_sleep;
        }

        ret = cfg80211_testmode_reply(skb);
        if (ret < 0)
            goto out_sleep;
    }

out_sleep:
    wl1271_ps_elp_sleep(wl);
out:
    mutex_unlock(&wl->mutex);

    return ret;
}

static int wl1271_tm_cmd_interrogate(struct wl1271 *wl, struct nlattr *tb[])
{
    int ret;
    struct wl1271_command *cmd;
    struct sk_buff *skb;
    u8 ie_id;

    wl1271_debug(DEBUG_TESTMODE, "testmode cmd interrogate");

    if (!tb[WL1271_TM_ATTR_IE_ID])
        return -EINVAL;

    ie_id = nla_get_u8(tb[WL1271_TM_ATTR_IE_ID]);

    mutex_lock(&wl->mutex);

    if (unlikely(wl->state != WLCORE_STATE_ON)) {
        ret = -EINVAL;
        goto out;
    }

    ret = wl1271_ps_elp_wakeup(wl);
    if (ret < 0)
        goto out;

    cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
    if (!cmd) {
        ret = -ENOMEM;
        goto out_sleep;
    }

    ret = wl1271_cmd_interrogate(wl, ie_id, cmd, sizeof(*cmd));
    if (ret < 0) {
        wl1271_warning("testmode cmd interrogate failed: %d", ret);
        goto out_free;
    }

    skb = cfg80211_testmode_alloc_reply_skb(wl->hw->wiphy, sizeof(*cmd));
    if (!skb) {
        ret = -ENOMEM;
        goto out_free;
    }

    if (nla_put(skb, WL1271_TM_ATTR_DATA, sizeof(*cmd), cmd)) {
        kfree_skb(skb);
        ret = -EMSGSIZE;
        goto out_free;
    }

    ret = cfg80211_testmode_reply(skb);
    if (ret < 0)
        goto out_free;

out_free:
    kfree(cmd);
out_sleep:
    wl1271_ps_elp_sleep(wl);
out:
    mutex_unlock(&wl->mutex);

    return ret;
}

static int wl1271_tm_cmd_configure(struct wl1271 *wl, struct nlattr *tb[])
{
    int buf_len, ret;
    void *buf;
    u8 ie_id;

    wl1271_debug(DEBUG_TESTMODE, "testmode cmd configure");

    if (!tb[WL1271_TM_ATTR_DATA])
        return -EINVAL;
    if (!tb[WL1271_TM_ATTR_IE_ID])
        return -EINVAL;

    ie_id = nla_get_u8(tb[WL1271_TM_ATTR_IE_ID]);
    buf = nla_data(tb[WL1271_TM_ATTR_DATA]);
    buf_len = nla_len(tb[WL1271_TM_ATTR_DATA]);

    if (buf_len > sizeof(struct wl1271_command))
        return -EMSGSIZE;

    mutex_lock(&wl->mutex);
    ret = wl1271_cmd_configure(wl, ie_id, buf, buf_len);
    mutex_unlock(&wl->mutex);

    if (ret < 0) {
        wl1271_warning("testmode cmd configure failed: %d", ret);
        return ret;
    }

    return 0;
}

static int wl1271_tm_detect_fem(struct wl1271 *wl, struct nlattr *tb[])
{
    /* return FEM type */
    int ret, len;
    struct sk_buff *skb;

    ret = wl1271_plt_start(wl, PLT_FEM_DETECT);
    if (ret < 0)
        goto out;

    mutex_lock(&wl->mutex);

    len = nla_total_size(sizeof(wl->fem_manuf));
    skb = cfg80211_testmode_alloc_reply_skb(wl->hw->wiphy, len);
    if (!skb) {
        ret = -ENOMEM;
        goto out_mutex;
    }

    if (nla_put(skb, WL1271_TM_ATTR_DATA, sizeof(wl->fem_manuf),
                          &wl->fem_manuf)) {
        kfree_skb(skb);
        ret = -EMSGSIZE;
        goto out_mutex;
    }

    ret = cfg80211_testmode_reply(skb);

out_mutex:
    mutex_unlock(&wl->mutex);

    /* We always stop plt after DETECT mode */
    wl1271_plt_stop(wl);
out:
    return ret;
}

static int wl1271_tm_cmd_set_plt_mode(struct wl1271 *wl, struct nlattr *tb[])
{
    u32 val;
    int ret;

    wl1271_debug(DEBUG_TESTMODE, "testmode cmd set plt mode");

    if (!tb[WL1271_TM_ATTR_PLT_MODE])
        return -EINVAL;

    val = nla_get_u32(tb[WL1271_TM_ATTR_PLT_MODE]);

    switch (val) {
    case PLT_OFF:
        ret = wl1271_plt_stop(wl);
        break;
    case PLT_ON:
        ret = wl1271_plt_start(wl, PLT_ON);
        break;
    case PLT_FEM_DETECT:
        ret = wl1271_tm_detect_fem(wl, tb);
        break;
    default:
        ret = -EINVAL;
        break;
    }

    return ret;
}

static int wl12xx_tm_cmd_get_mac(struct wl1271 *wl, struct nlattr *tb[])
{
    struct sk_buff *skb;
    u8 mac_addr[ETH_ALEN];
    int ret = 0;

    mutex_lock(&wl->mutex);

    if (!wl->plt) {
        ret = -EINVAL;
        goto out;
    }

    if (wl->fuse_oui_addr == 0 && wl->fuse_nic_addr == 0) {
        ret = -EOPNOTSUPP;
        goto out;
    }

    mac_addr[0] = (u8)(wl->fuse_oui_addr >> 16);
    mac_addr[1] = (u8)(wl->fuse_oui_addr >> 8);
    mac_addr[2] = (u8) wl->fuse_oui_addr;
    mac_addr[3] = (u8)(wl->fuse_nic_addr >> 16);
    mac_addr[4] = (u8)(wl->fuse_nic_addr >> 8);
    mac_addr[5] = (u8) wl->fuse_nic_addr;

    skb = cfg80211_testmode_alloc_reply_skb(wl->hw->wiphy, ETH_ALEN);
    if (!skb) {
        ret = -ENOMEM;
        goto out;
    }

    if (nla_put(skb, WL1271_TM_ATTR_DATA, ETH_ALEN, mac_addr)) {
        kfree_skb(skb);
        ret = -EMSGSIZE;
        goto out;
    }

    ret = cfg80211_testmode_reply(skb);
    if (ret < 0)
        goto out;

out:
    mutex_unlock(&wl->mutex);
    return ret;
}

int wl1271_tm_cmd(struct ieee80211_hw *hw, void *data, int len)
{
    struct wl1271 *wl = hw->priv;
    struct nlattr *tb[WL1271_TM_ATTR_MAX + 1];
    int err;

    err = nla_parse(tb, WL1271_TM_ATTR_MAX, data, len, wl1271_tm_policy);
    if (err)
        return err;

    if (!tb[WL1271_TM_ATTR_CMD_ID])
        return -EINVAL;

    switch (nla_get_u32(tb[WL1271_TM_ATTR_CMD_ID])) {
    case WL1271_TM_CMD_TEST:
        return wl1271_tm_cmd_test(wl, tb);
    case WL1271_TM_CMD_INTERROGATE:
        return wl1271_tm_cmd_interrogate(wl, tb);
    case WL1271_TM_CMD_CONFIGURE:
        return wl1271_tm_cmd_configure(wl, tb);
    case WL1271_TM_CMD_SET_PLT_MODE:
        return wl1271_tm_cmd_set_plt_mode(wl, tb);
    case WL1271_TM_CMD_GET_MAC:
        return wl12xx_tm_cmd_get_mac(wl, tb);
    default:
        return -EOPNOTSUPP;
    }
}