init.c

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/*
 * This file is part of wl1271
 *
 * Copyright (C) 2009 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 <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>

#include "debug.h"
#include "init.h"
#include "wl12xx_80211.h"
#include "acx.h"
#include "cmd.h"
#include "tx.h"
#include "io.h"
#include "hw_ops.h"

int wl1271_init_templates_config(struct wl1271 *wl)
{
    int ret, i;
    size_t max_size;

    /* send empty templates for fw memory reservation */
    ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,
                      CMD_TEMPL_CFG_PROBE_REQ_2_4, NULL,
                      WL1271_CMD_TEMPL_MAX_SIZE,
                      0, WL1271_RATE_AUTOMATIC);
    if (ret < 0)
        return ret;

    ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,
                      CMD_TEMPL_CFG_PROBE_REQ_5,
                      NULL, WL1271_CMD_TEMPL_MAX_SIZE, 0,
                      WL1271_RATE_AUTOMATIC);
    if (ret < 0)
        return ret;

    if (wl->quirks & WLCORE_QUIRK_DUAL_PROBE_TMPL) {
        ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,
                          CMD_TEMPL_APP_PROBE_REQ_2_4, NULL,
                          WL1271_CMD_TEMPL_MAX_SIZE,
                          0, WL1271_RATE_AUTOMATIC);
        if (ret < 0)
            return ret;

        ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,
                          CMD_TEMPL_APP_PROBE_REQ_5, NULL,
                          WL1271_CMD_TEMPL_MAX_SIZE,
                          0, WL1271_RATE_AUTOMATIC);
        if (ret < 0)
            return ret;
    }

    ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,
                      CMD_TEMPL_NULL_DATA, NULL,
                      sizeof(struct wl12xx_null_data_template),
                      0, WL1271_RATE_AUTOMATIC);
    if (ret < 0)
        return ret;

    ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,
                      CMD_TEMPL_PS_POLL, NULL,
                      sizeof(struct wl12xx_ps_poll_template),
                      0, WL1271_RATE_AUTOMATIC);
    if (ret < 0)
        return ret;

    ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,
                      CMD_TEMPL_QOS_NULL_DATA, NULL,
                      sizeof
                      (struct ieee80211_qos_hdr),
                      0, WL1271_RATE_AUTOMATIC);
    if (ret < 0)
        return ret;

    ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,
                      CMD_TEMPL_PROBE_RESPONSE, NULL,
                      WL1271_CMD_TEMPL_DFLT_SIZE,
                      0, WL1271_RATE_AUTOMATIC);
    if (ret < 0)
        return ret;

    ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,
                      CMD_TEMPL_BEACON, NULL,
                      WL1271_CMD_TEMPL_DFLT_SIZE,
                      0, WL1271_RATE_AUTOMATIC);
    if (ret < 0)
        return ret;

    max_size = sizeof(struct wl12xx_arp_rsp_template) +
           WL1271_EXTRA_SPACE_MAX;
    ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,
                      CMD_TEMPL_ARP_RSP, NULL,
                      max_size,
                      0, WL1271_RATE_AUTOMATIC);
    if (ret < 0)
        return ret;

    /*
     * Put very large empty placeholders for all templates. These
     * reserve memory for later.
     */
    ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,
                      CMD_TEMPL_AP_PROBE_RESPONSE, NULL,
                      WL1271_CMD_TEMPL_MAX_SIZE,
                      0, WL1271_RATE_AUTOMATIC);
    if (ret < 0)
        return ret;

    ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,
                      CMD_TEMPL_AP_BEACON, NULL,
                      WL1271_CMD_TEMPL_MAX_SIZE,
                      0, WL1271_RATE_AUTOMATIC);
    if (ret < 0)
        return ret;

    ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,
                      CMD_TEMPL_DEAUTH_AP, NULL,
                      sizeof
                      (struct wl12xx_disconn_template),
                      0, WL1271_RATE_AUTOMATIC);
    if (ret < 0)
        return ret;

    for (i = 0; i < WLCORE_MAX_KLV_TEMPLATES; i++) {
        ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,
                          CMD_TEMPL_KLV, NULL,
                          sizeof(struct ieee80211_qos_hdr),
                          i, WL1271_RATE_AUTOMATIC);
        if (ret < 0)
            return ret;
    }

    return 0;
}

static int wl1271_ap_init_deauth_template(struct wl1271 *wl,
                      struct wl12xx_vif *wlvif)
{
    struct wl12xx_disconn_template *tmpl;
    int ret;
    u32 rate;

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

    tmpl->header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_MGMT |
                         IEEE80211_STYPE_DEAUTH);

    rate = wl1271_tx_min_rate_get(wl, wlvif->basic_rate_set);
    ret = wl1271_cmd_template_set(wl, wlvif->role_id,
                      CMD_TEMPL_DEAUTH_AP,
                      tmpl, sizeof(*tmpl), 0, rate);

out:
    kfree(tmpl);
    return ret;
}

static int wl1271_ap_init_null_template(struct wl1271 *wl,
                    struct ieee80211_vif *vif)
{
    struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
    struct ieee80211_hdr_3addr *nullfunc;
    int ret;
    u32 rate;

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

    nullfunc->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
                          IEEE80211_STYPE_NULLFUNC |
                          IEEE80211_FCTL_FROMDS);

    /* nullfunc->addr1 is filled by FW */

    memcpy(nullfunc->addr2, vif->addr, ETH_ALEN);
    memcpy(nullfunc->addr3, vif->addr, ETH_ALEN);

    rate = wl1271_tx_min_rate_get(wl, wlvif->basic_rate_set);
    ret = wl1271_cmd_template_set(wl, wlvif->role_id,
                      CMD_TEMPL_NULL_DATA, nullfunc,
                      sizeof(*nullfunc), 0, rate);

out:
    kfree(nullfunc);
    return ret;
}

static int wl1271_ap_init_qos_null_template(struct wl1271 *wl,
                        struct ieee80211_vif *vif)
{
    struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
    struct ieee80211_qos_hdr *qosnull;
    int ret;
    u32 rate;

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

    qosnull->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
                         IEEE80211_STYPE_QOS_NULLFUNC |
                         IEEE80211_FCTL_FROMDS);

    /* qosnull->addr1 is filled by FW */

    memcpy(qosnull->addr2, vif->addr, ETH_ALEN);
    memcpy(qosnull->addr3, vif->addr, ETH_ALEN);

    rate = wl1271_tx_min_rate_get(wl, wlvif->basic_rate_set);
    ret = wl1271_cmd_template_set(wl, wlvif->role_id,
                      CMD_TEMPL_QOS_NULL_DATA, qosnull,
                      sizeof(*qosnull), 0, rate);

out:
    kfree(qosnull);
    return ret;
}

static int wl12xx_init_rx_config(struct wl1271 *wl)
{
    int ret;

    ret = wl1271_acx_rx_msdu_life_time(wl);
    if (ret < 0)
        return ret;

    return 0;
}

static int wl12xx_init_phy_vif_config(struct wl1271 *wl,
                        struct wl12xx_vif *wlvif)
{
    int ret;

    ret = wl1271_acx_slot(wl, wlvif, DEFAULT_SLOT_TIME);
    if (ret < 0)
        return ret;

    ret = wl1271_acx_service_period_timeout(wl, wlvif);
    if (ret < 0)
        return ret;

    ret = wl1271_acx_rts_threshold(wl, wlvif, wl->hw->wiphy->rts_threshold);
    if (ret < 0)
        return ret;

    return 0;
}

static int wl1271_init_sta_beacon_filter(struct wl1271 *wl,
                     struct wl12xx_vif *wlvif)
{
    int ret;

    ret = wl1271_acx_beacon_filter_table(wl, wlvif);
    if (ret < 0)
        return ret;

    /* enable beacon filtering */
    ret = wl1271_acx_beacon_filter_opt(wl, wlvif, true);
    if (ret < 0)
        return ret;

    return 0;
}

int wl1271_init_pta(struct wl1271 *wl)
{
    int ret;

    ret = wl12xx_acx_sg_cfg(wl);
    if (ret < 0)
        return ret;

    ret = wl1271_acx_sg_enable(wl, wl->sg_enabled);
    if (ret < 0)
        return ret;

    return 0;
}

int wl1271_init_energy_detection(struct wl1271 *wl)
{
    int ret;

    ret = wl1271_acx_cca_threshold(wl);
    if (ret < 0)
        return ret;

    return 0;
}

static int wl1271_init_beacon_broadcast(struct wl1271 *wl,
                    struct wl12xx_vif *wlvif)
{
    int ret;

    ret = wl1271_acx_bcn_dtim_options(wl, wlvif);
    if (ret < 0)
        return ret;

    return 0;
}

static int wl12xx_init_fwlog(struct wl1271 *wl)
{
    int ret;

    if (wl->quirks & WLCORE_QUIRK_FWLOG_NOT_IMPLEMENTED)
        return 0;

    ret = wl12xx_cmd_config_fwlog(wl);
    if (ret < 0)
        return ret;

    return 0;
}

/* generic sta initialization (non vif-specific) */
static int wl1271_sta_hw_init(struct wl1271 *wl, struct wl12xx_vif *wlvif)
{
    int ret;

    /* PS config */
    ret = wl12xx_acx_config_ps(wl, wlvif);
    if (ret < 0)
        return ret;

    /* FM WLAN coexistence */
    ret = wl1271_acx_fm_coex(wl);
    if (ret < 0)
        return ret;

    ret = wl1271_acx_sta_rate_policies(wl, wlvif);
    if (ret < 0)
        return ret;

    return 0;
}

static int wl1271_sta_hw_init_post_mem(struct wl1271 *wl,
                       struct ieee80211_vif *vif)
{
    struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
    int ret;

    /* disable the keep-alive feature */
    ret = wl1271_acx_keep_alive_mode(wl, wlvif, false);
    if (ret < 0)
        return ret;

    return 0;
}

/* generic ap initialization (non vif-specific) */
static int wl1271_ap_hw_init(struct wl1271 *wl, struct wl12xx_vif *wlvif)
{
    int ret;

    ret = wl1271_init_ap_rates(wl, wlvif);
    if (ret < 0)
        return ret;

    return 0;
}

int wl1271_ap_init_templates(struct wl1271 *wl, struct ieee80211_vif *vif)
{
    struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
    int ret;

    ret = wl1271_ap_init_deauth_template(wl, wlvif);
    if (ret < 0)
        return ret;

    ret = wl1271_ap_init_null_template(wl, vif);
    if (ret < 0)
        return ret;

    ret = wl1271_ap_init_qos_null_template(wl, vif);
    if (ret < 0)
        return ret;

    /*
     * when operating as AP we want to receive external beacons for
     * configuring ERP protection.
     */
    ret = wl1271_acx_beacon_filter_opt(wl, wlvif, false);
    if (ret < 0)
        return ret;

    return 0;
}

static int wl1271_ap_hw_init_post_mem(struct wl1271 *wl,
                      struct ieee80211_vif *vif)
{
    return wl1271_ap_init_templates(wl, vif);
}

int wl1271_init_ap_rates(struct wl1271 *wl, struct wl12xx_vif *wlvif)
{
    int i, ret;
    struct conf_tx_rate_class rc;
    u32 supported_rates;

    wl1271_debug(DEBUG_AP, "AP basic rate set: 0x%x",
             wlvif->basic_rate_set);

    if (wlvif->basic_rate_set == 0)
        return -EINVAL;

    rc.enabled_rates = wlvif->basic_rate_set;
    rc.long_retry_limit = 10;
    rc.short_retry_limit = 10;
    rc.aflags = 0;
    ret = wl1271_acx_ap_rate_policy(wl, &rc, wlvif->ap.mgmt_rate_idx);
    if (ret < 0)
        return ret;

    /* use the min basic rate for AP broadcast/multicast */
    rc.enabled_rates = wl1271_tx_min_rate_get(wl, wlvif->basic_rate_set);
    rc.short_retry_limit = 10;
    rc.long_retry_limit = 10;
    rc.aflags = 0;
    ret = wl1271_acx_ap_rate_policy(wl, &rc, wlvif->ap.bcast_rate_idx);
    if (ret < 0)
        return ret;

    /*
     * If the basic rates contain OFDM rates, use OFDM only
     * rates for unicast TX as well. Else use all supported rates.
     */
    if ((wlvif->basic_rate_set & CONF_TX_OFDM_RATES))
        supported_rates = CONF_TX_OFDM_RATES;
    else
        supported_rates = CONF_TX_AP_ENABLED_RATES;

    /* unconditionally enable HT rates */
    supported_rates |= CONF_TX_MCS_RATES;

    /* get extra MIMO or wide-chan rates where the HW supports it */
    supported_rates |= wlcore_hw_ap_get_mimo_wide_rate_mask(wl, wlvif);

    /* configure unicast TX rate classes */
    for (i = 0; i < wl->conf.tx.ac_conf_count; i++) {
        rc.enabled_rates = supported_rates;
        rc.short_retry_limit = 10;
        rc.long_retry_limit = 10;
        rc.aflags = 0;
        ret = wl1271_acx_ap_rate_policy(wl, &rc,
                        wlvif->ap.ucast_rate_idx[i]);
        if (ret < 0)
            return ret;
    }

    return 0;
}

static int wl1271_set_ba_policies(struct wl1271 *wl, struct wl12xx_vif *wlvif)
{
    /* Reset the BA RX indicators */
    wlvif->ba_allowed = true;
    wl->ba_rx_session_count = 0;

    /* BA is supported in STA/AP modes */
    if (wlvif->bss_type != BSS_TYPE_AP_BSS &&
        wlvif->bss_type != BSS_TYPE_STA_BSS) {
        wlvif->ba_support = false;
        return 0;
    }

    wlvif->ba_support = true;

    /* 802.11n initiator BA session setting */
    return wl12xx_acx_set_ba_initiator_policy(wl, wlvif);
}

/* vif-specifc initialization */
static int wl12xx_init_sta_role(struct wl1271 *wl, struct wl12xx_vif *wlvif)
{
    int ret;

    ret = wl1271_acx_group_address_tbl(wl, wlvif, true, NULL, 0);
    if (ret < 0)
        return ret;

    /* Initialize connection monitoring thresholds */
    ret = wl1271_acx_conn_monit_params(wl, wlvif, false);
    if (ret < 0)
        return ret;

    /* Beacon filtering */
    ret = wl1271_init_sta_beacon_filter(wl, wlvif);
    if (ret < 0)
        return ret;

    /* Beacons and broadcast settings */
    ret = wl1271_init_beacon_broadcast(wl, wlvif);
    if (ret < 0)
        return ret;

    /* Configure rssi/snr averaging weights */
    ret = wl1271_acx_rssi_snr_avg_weights(wl, wlvif);
    if (ret < 0)
        return ret;

    return 0;
}

/* vif-specific intialization */
static int wl12xx_init_ap_role(struct wl1271 *wl, struct wl12xx_vif *wlvif)
{
    int ret;

    ret = wl1271_acx_ap_max_tx_retry(wl, wlvif);
    if (ret < 0)
        return ret;

    /* initialize Tx power */
    ret = wl1271_acx_tx_power(wl, wlvif, wlvif->power_level);
    if (ret < 0)
        return ret;

    return 0;
}

int wl1271_init_vif_specific(struct wl1271 *wl, struct ieee80211_vif *vif)
{
    struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
    struct conf_tx_ac_category *conf_ac;
    struct conf_tx_tid *conf_tid;
    bool is_ap = (wlvif->bss_type == BSS_TYPE_AP_BSS);
    int ret, i;

    /* consider all existing roles before configuring psm. */

    if (wl->ap_count == 0 && is_ap) { /* first AP */
        /* Configure for power always on */
        ret = wl1271_acx_sleep_auth(wl, WL1271_PSM_CAM);
        if (ret < 0)
            return ret;
    /* first STA, no APs */
    } else if (wl->sta_count == 0 && wl->ap_count == 0 && !is_ap) {
        u8 sta_auth = wl->conf.conn.sta_sleep_auth;
        /* Configure for power according to debugfs */
        if (sta_auth != WL1271_PSM_ILLEGAL)
            ret = wl1271_acx_sleep_auth(wl, sta_auth);
        /* Configure for power always on */
        else if (wl->quirks & WLCORE_QUIRK_NO_ELP)
            ret = wl1271_acx_sleep_auth(wl, WL1271_PSM_CAM);
        /* Configure for ELP power saving */
        else
            ret = wl1271_acx_sleep_auth(wl, WL1271_PSM_ELP);

        if (ret < 0)
            return ret;
    }

    /* Mode specific init */
    if (is_ap) {
        ret = wl1271_ap_hw_init(wl, wlvif);
        if (ret < 0)
            return ret;

        ret = wl12xx_init_ap_role(wl, wlvif);
        if (ret < 0)
            return ret;
    } else {
        ret = wl1271_sta_hw_init(wl, wlvif);
        if (ret < 0)
            return ret;

        ret = wl12xx_init_sta_role(wl, wlvif);
        if (ret < 0)
            return ret;
    }

    wl12xx_init_phy_vif_config(wl, wlvif);

    /* Default TID/AC configuration */
    BUG_ON(wl->conf.tx.tid_conf_count != wl->conf.tx.ac_conf_count);
    for (i = 0; i < wl->conf.tx.tid_conf_count; i++) {
        conf_ac = &wl->conf.tx.ac_conf[i];
        ret = wl1271_acx_ac_cfg(wl, wlvif, conf_ac->ac,
                    conf_ac->cw_min, conf_ac->cw_max,
                    conf_ac->aifsn, conf_ac->tx_op_limit);
        if (ret < 0)
            return ret;

        conf_tid = &wl->conf.tx.tid_conf[i];
        ret = wl1271_acx_tid_cfg(wl, wlvif,
                     conf_tid->queue_id,
                     conf_tid->channel_type,
                     conf_tid->tsid,
                     conf_tid->ps_scheme,
                     conf_tid->ack_policy,
                     conf_tid->apsd_conf[0],
                     conf_tid->apsd_conf[1]);
        if (ret < 0)
            return ret;
    }

    /* Configure HW encryption */
    ret = wl1271_acx_feature_cfg(wl, wlvif);
    if (ret < 0)
        return ret;

    /* Mode specific init - post mem init */
    if (is_ap)
        ret = wl1271_ap_hw_init_post_mem(wl, vif);
    else
        ret = wl1271_sta_hw_init_post_mem(wl, vif);

    if (ret < 0)
        return ret;

    /* Configure initiator BA sessions policies */
    ret = wl1271_set_ba_policies(wl, wlvif);
    if (ret < 0)
        return ret;

    ret = wlcore_hw_init_vif(wl, wlvif);
    if (ret < 0)
        return ret;

    return 0;
}

int wl1271_hw_init(struct wl1271 *wl)
{
    int ret;

    /* Chip-specific hw init */
    ret = wl->ops->hw_init(wl);
    if (ret < 0)
        return ret;

    /* Init templates */
    ret = wl1271_init_templates_config(wl);
    if (ret < 0)
        return ret;

    ret = wl12xx_acx_mem_cfg(wl);
    if (ret < 0)
        return ret;

    /* Configure the FW logger */
    ret = wl12xx_init_fwlog(wl);
    if (ret < 0)
        return ret;

    /* Bluetooth WLAN coexistence */
    ret = wl1271_init_pta(wl);
    if (ret < 0)
        return ret;

    /* Default memory configuration */
    ret = wl1271_acx_init_mem_config(wl);
    if (ret < 0)
        return ret;

    /* RX config */
    ret = wl12xx_init_rx_config(wl);
    if (ret < 0)
        goto out_free_memmap;

    ret = wl1271_acx_dco_itrim_params(wl);
    if (ret < 0)
        goto out_free_memmap;

    /* Configure TX patch complete interrupt behavior */
    ret = wl1271_acx_tx_config_options(wl);
    if (ret < 0)
        goto out_free_memmap;

    /* RX complete interrupt pacing */
    ret = wl1271_acx_init_rx_interrupt(wl);
    if (ret < 0)
        goto out_free_memmap;

    /* Energy detection */
    ret = wl1271_init_energy_detection(wl);
    if (ret < 0)
        goto out_free_memmap;

    /* Default fragmentation threshold */
    ret = wl1271_acx_frag_threshold(wl, wl->hw->wiphy->frag_threshold);
    if (ret < 0)
        goto out_free_memmap;

    /* Enable data path */
    ret = wl1271_cmd_data_path(wl, 1);
    if (ret < 0)
        goto out_free_memmap;

    /* configure PM */
    ret = wl1271_acx_pm_config(wl);
    if (ret < 0)
        goto out_free_memmap;

    ret = wl12xx_acx_set_rate_mgmt_params(wl);
    if (ret < 0)
        goto out_free_memmap;

    /* configure hangover */
    ret = wl12xx_acx_config_hangover(wl);
    if (ret < 0)
        goto out_free_memmap;

    return 0;

 out_free_memmap:
    kfree(wl->target_mem_map);
    wl->target_mem_map = NULL;

    return ret;
}