init.c

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/*
 * This file is part of wl1251
 *
 * Copyright (C) 2009 Nokia Corporation
 *
 * 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 "init.h"
#include "wl12xx_80211.h"
#include "acx.h"
#include "cmd.h"
#include "reg.h"

int wl1251_hw_init_hwenc_config(struct wl1251 *wl)
{
    int ret;

    ret = wl1251_acx_feature_cfg(wl);
    if (ret < 0) {
        wl1251_warning("couldn't set feature config");
        return ret;
    }

    ret = wl1251_acx_default_key(wl, wl->default_key);
    if (ret < 0) {
        wl1251_warning("couldn't set default key");
        return ret;
    }

    return 0;
}

int wl1251_hw_init_templates_config(struct wl1251 *wl)
{
    int ret;
    u8 partial_vbm[PARTIAL_VBM_MAX];

    /* send empty templates for fw memory reservation */
    ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, NULL,
                      sizeof(struct wl12xx_probe_req_template));
    if (ret < 0)
        return ret;

    ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA, NULL,
                      sizeof(struct wl12xx_null_data_template));
    if (ret < 0)
        return ret;

    ret = wl1251_cmd_template_set(wl, CMD_PS_POLL, NULL,
                      sizeof(struct wl12xx_ps_poll_template));
    if (ret < 0)
        return ret;

    ret = wl1251_cmd_template_set(wl, CMD_QOS_NULL_DATA, NULL,
                      sizeof
                      (struct wl12xx_qos_null_data_template));
    if (ret < 0)
        return ret;

    ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, NULL,
                      sizeof
                      (struct wl12xx_probe_resp_template));
    if (ret < 0)
        return ret;

    ret = wl1251_cmd_template_set(wl, CMD_BEACON, NULL,
                      sizeof
                      (struct wl12xx_beacon_template));
    if (ret < 0)
        return ret;

    /* tim templates, first reserve space then allocate an empty one */
    memset(partial_vbm, 0, PARTIAL_VBM_MAX);
    ret = wl1251_cmd_vbm(wl, TIM_ELE_ID, partial_vbm, PARTIAL_VBM_MAX, 0);
    if (ret < 0)
        return ret;

    ret = wl1251_cmd_vbm(wl, TIM_ELE_ID, partial_vbm, 1, 0);
    if (ret < 0)
        return ret;

    return 0;
}

int wl1251_hw_init_rx_config(struct wl1251 *wl, u32 config, u32 filter)
{
    int ret;

    ret = wl1251_acx_rx_msdu_life_time(wl, RX_MSDU_LIFETIME_DEF);
    if (ret < 0)
        return ret;

    ret = wl1251_acx_rx_config(wl, config, filter);
    if (ret < 0)
        return ret;

    return 0;
}

int wl1251_hw_init_phy_config(struct wl1251 *wl)
{
    int ret;

    ret = wl1251_acx_pd_threshold(wl);
    if (ret < 0)
        return ret;

    ret = wl1251_acx_slot(wl, DEFAULT_SLOT_TIME);
    if (ret < 0)
        return ret;

    ret = wl1251_acx_group_address_tbl(wl);
    if (ret < 0)
        return ret;

    ret = wl1251_acx_service_period_timeout(wl);
    if (ret < 0)
        return ret;

    ret = wl1251_acx_rts_threshold(wl, RTS_THRESHOLD_DEF);
    if (ret < 0)
        return ret;

    return 0;
}

int wl1251_hw_init_beacon_filter(struct wl1251 *wl)
{
    int ret;

    /* disable beacon filtering at this stage */
    ret = wl1251_acx_beacon_filter_opt(wl, false);
    if (ret < 0)
        return ret;

    ret = wl1251_acx_beacon_filter_table(wl);
    if (ret < 0)
        return ret;

    return 0;
}

int wl1251_hw_init_pta(struct wl1251 *wl)
{
    int ret;

    ret = wl1251_acx_sg_enable(wl);
    if (ret < 0)
        return ret;

    ret = wl1251_acx_sg_cfg(wl);
    if (ret < 0)
        return ret;

    return 0;
}

int wl1251_hw_init_energy_detection(struct wl1251 *wl)
{
    int ret;

    ret = wl1251_acx_cca_threshold(wl);
    if (ret < 0)
        return ret;

    return 0;
}

int wl1251_hw_init_beacon_broadcast(struct wl1251 *wl)
{
    int ret;

    ret = wl1251_acx_bcn_dtim_options(wl);
    if (ret < 0)
        return ret;

    return 0;
}

int wl1251_hw_init_power_auth(struct wl1251 *wl)
{
    return wl1251_acx_sleep_auth(wl, WL1251_PSM_CAM);
}

int wl1251_hw_init_mem_config(struct wl1251 *wl)
{
    int ret;

    ret = wl1251_acx_mem_cfg(wl);
    if (ret < 0)
        return ret;

    wl->target_mem_map = kzalloc(sizeof(struct wl1251_acx_mem_map),
                      GFP_KERNEL);
    if (!wl->target_mem_map) {
        wl1251_error("couldn't allocate target memory map");
        return -ENOMEM;
    }

    /* we now ask for the firmware built memory map */
    ret = wl1251_acx_mem_map(wl, wl->target_mem_map,
                 sizeof(struct wl1251_acx_mem_map));
    if (ret < 0) {
        wl1251_error("couldn't retrieve firmware memory map");
        kfree(wl->target_mem_map);
        wl->target_mem_map = NULL;
        return ret;
    }

    return 0;
}

static int wl1251_hw_init_txq_fill(u8 qid,
                   struct acx_tx_queue_qos_config *config,
                   u32 num_blocks)
{
    config->qid = qid;

    switch (qid) {
    case QOS_AC_BE:
        config->high_threshold =
            (QOS_TX_HIGH_BE_DEF * num_blocks) / 100;
        config->low_threshold =
            (QOS_TX_LOW_BE_DEF * num_blocks) / 100;
        break;
    case QOS_AC_BK:
        config->high_threshold =
            (QOS_TX_HIGH_BK_DEF * num_blocks) / 100;
        config->low_threshold =
            (QOS_TX_LOW_BK_DEF * num_blocks) / 100;
        break;
    case QOS_AC_VI:
        config->high_threshold =
            (QOS_TX_HIGH_VI_DEF * num_blocks) / 100;
        config->low_threshold =
            (QOS_TX_LOW_VI_DEF * num_blocks) / 100;
        break;
    case QOS_AC_VO:
        config->high_threshold =
            (QOS_TX_HIGH_VO_DEF * num_blocks) / 100;
        config->low_threshold =
            (QOS_TX_LOW_VO_DEF * num_blocks) / 100;
        break;
    default:
        wl1251_error("Invalid TX queue id: %d", qid);
        return -EINVAL;
    }

    return 0;
}

static int wl1251_hw_init_tx_queue_config(struct wl1251 *wl)
{
    struct acx_tx_queue_qos_config *config;
    struct wl1251_acx_mem_map *wl_mem_map = wl->target_mem_map;
    int ret, i;

    wl1251_debug(DEBUG_ACX, "acx tx queue config");

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

    for (i = 0; i < MAX_NUM_OF_AC; i++) {
        ret = wl1251_hw_init_txq_fill(i, config,
                          wl_mem_map->num_tx_mem_blocks);
        if (ret < 0)
            goto out;

        ret = wl1251_cmd_configure(wl, ACX_TX_QUEUE_CFG,
                       config, sizeof(*config));
        if (ret < 0)
            goto out;
    }

    wl1251_acx_ac_cfg(wl, AC_BE, CWMIN_BE, CWMAX_BE, AIFS_DIFS, TXOP_BE);
    wl1251_acx_ac_cfg(wl, AC_BK, CWMIN_BK, CWMAX_BK, AIFS_DIFS, TXOP_BK);
    wl1251_acx_ac_cfg(wl, AC_VI, CWMIN_VI, CWMAX_VI, AIFS_DIFS, TXOP_VI);
    wl1251_acx_ac_cfg(wl, AC_VO, CWMIN_VO, CWMAX_VO, AIFS_DIFS, TXOP_VO);

out:
    kfree(config);
    return ret;
}

static int wl1251_hw_init_data_path_config(struct wl1251 *wl)
{
    int ret;

    /* asking for the data path parameters */
    wl->data_path = kzalloc(sizeof(struct acx_data_path_params_resp),
                GFP_KERNEL);
    if (!wl->data_path) {
        wl1251_error("Couldnt allocate data path parameters");
        return -ENOMEM;
    }

    ret = wl1251_acx_data_path_params(wl, wl->data_path);
    if (ret < 0) {
        kfree(wl->data_path);
        wl->data_path = NULL;
        return ret;
    }

    return 0;
}


int wl1251_hw_init(struct wl1251 *wl)
{
    struct wl1251_acx_mem_map *wl_mem_map;
    int ret;

    ret = wl1251_hw_init_hwenc_config(wl);
    if (ret < 0)
        return ret;

    /* Template settings */
    ret = wl1251_hw_init_templates_config(wl);
    if (ret < 0)
        return ret;

    /* Default memory configuration */
    ret = wl1251_hw_init_mem_config(wl);
    if (ret < 0)
        return ret;

    /* Default data path configuration  */
    ret = wl1251_hw_init_data_path_config(wl);
    if (ret < 0)
        goto out_free_memmap;

    /* RX config */
    ret = wl1251_hw_init_rx_config(wl,
                       RX_CFG_PROMISCUOUS | RX_CFG_TSF,
                       RX_FILTER_OPTION_DEF);
    /* RX_CONFIG_OPTION_ANY_DST_ANY_BSS,
       RX_FILTER_OPTION_FILTER_ALL); */
    if (ret < 0)
        goto out_free_data_path;

    /* TX queues config */
    ret = wl1251_hw_init_tx_queue_config(wl);
    if (ret < 0)
        goto out_free_data_path;

    /* PHY layer config */
    ret = wl1251_hw_init_phy_config(wl);
    if (ret < 0)
        goto out_free_data_path;

    /* Initialize connection monitoring thresholds */
    ret = wl1251_acx_conn_monit_params(wl);
    if (ret < 0)
        goto out_free_data_path;

    /* Beacon filtering */
    ret = wl1251_hw_init_beacon_filter(wl);
    if (ret < 0)
        goto out_free_data_path;

    /* Bluetooth WLAN coexistence */
    ret = wl1251_hw_init_pta(wl);
    if (ret < 0)
        goto out_free_data_path;

    /* Energy detection */
    ret = wl1251_hw_init_energy_detection(wl);
    if (ret < 0)
        goto out_free_data_path;

    /* Beacons and boradcast settings */
    ret = wl1251_hw_init_beacon_broadcast(wl);
    if (ret < 0)
        goto out_free_data_path;

    /* Enable data path */
    ret = wl1251_cmd_data_path(wl, wl->channel, 1);
    if (ret < 0)
        goto out_free_data_path;

    /* Default power state */
    ret = wl1251_hw_init_power_auth(wl);
    if (ret < 0)
        goto out_free_data_path;

    wl_mem_map = wl->target_mem_map;
    wl1251_info("%d tx blocks at 0x%x, %d rx blocks at 0x%x",
            wl_mem_map->num_tx_mem_blocks,
            wl->data_path->tx_control_addr,
            wl_mem_map->num_rx_mem_blocks,
            wl->data_path->rx_control_addr);

    return 0;

 out_free_data_path:
    kfree(wl->data_path);

 out_free_memmap:
    kfree(wl->target_mem_map);

    return ret;
}