+++ /dev/null
-/*
- * This file is part of wl1251
- *
- * Copyright (C) 2008-2009 Nokia Corporation
- *
- * Contact: Kalle Valo <kalle.valo@nokia.com>
- *
- * 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/module.h>
-#include <linux/interrupt.h>
-#include <linux/firmware.h>
-#include <linux/delay.h>
-#include <linux/irq.h>
-#include <linux/crc32.h>
-#include <linux/etherdevice.h>
-#include <linux/vmalloc.h>
-#include <linux/slab.h>
-
-#include "wl1251.h"
-#include "wl12xx_80211.h"
-#include "wl1251_reg.h"
-#include "wl1251_io.h"
-#include "wl1251_cmd.h"
-#include "wl1251_event.h"
-#include "wl1251_tx.h"
-#include "wl1251_rx.h"
-#include "wl1251_ps.h"
-#include "wl1251_init.h"
-#include "wl1251_debugfs.h"
-#include "wl1251_boot.h"
-
-void wl1251_enable_interrupts(struct wl1251 *wl)
-{
- wl->if_ops->enable_irq(wl);
-}
-
-void wl1251_disable_interrupts(struct wl1251 *wl)
-{
- wl->if_ops->disable_irq(wl);
-}
-
-static void wl1251_power_off(struct wl1251 *wl)
-{
- wl->set_power(false);
-}
-
-static void wl1251_power_on(struct wl1251 *wl)
-{
- wl->set_power(true);
-}
-
-static int wl1251_fetch_firmware(struct wl1251 *wl)
-{
- const struct firmware *fw;
- struct device *dev = wiphy_dev(wl->hw->wiphy);
- int ret;
-
- ret = request_firmware(&fw, WL1251_FW_NAME, dev);
-
- if (ret < 0) {
- wl1251_error("could not get firmware: %d", ret);
- return ret;
- }
-
- if (fw->size % 4) {
- wl1251_error("firmware size is not multiple of 32 bits: %zu",
- fw->size);
- ret = -EILSEQ;
- goto out;
- }
-
- wl->fw_len = fw->size;
- wl->fw = vmalloc(wl->fw_len);
-
- if (!wl->fw) {
- wl1251_error("could not allocate memory for the firmware");
- ret = -ENOMEM;
- goto out;
- }
-
- memcpy(wl->fw, fw->data, wl->fw_len);
-
- ret = 0;
-
-out:
- release_firmware(fw);
-
- return ret;
-}
-
-static int wl1251_fetch_nvs(struct wl1251 *wl)
-{
- const struct firmware *fw;
- struct device *dev = wiphy_dev(wl->hw->wiphy);
- int ret;
-
- ret = request_firmware(&fw, WL1251_NVS_NAME, dev);
-
- if (ret < 0) {
- wl1251_error("could not get nvs file: %d", ret);
- return ret;
- }
-
- if (fw->size % 4) {
- wl1251_error("nvs size is not multiple of 32 bits: %zu",
- fw->size);
- ret = -EILSEQ;
- goto out;
- }
-
- wl->nvs_len = fw->size;
- wl->nvs = kmemdup(fw->data, wl->nvs_len, GFP_KERNEL);
-
- if (!wl->nvs) {
- wl1251_error("could not allocate memory for the nvs file");
- ret = -ENOMEM;
- goto out;
- }
-
- ret = 0;
-
-out:
- release_firmware(fw);
-
- return ret;
-}
-
-static void wl1251_fw_wakeup(struct wl1251 *wl)
-{
- u32 elp_reg;
-
- elp_reg = ELPCTRL_WAKE_UP;
- wl1251_write_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
- elp_reg = wl1251_read_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR);
-
- if (!(elp_reg & ELPCTRL_WLAN_READY))
- wl1251_warning("WLAN not ready");
-}
-
-static int wl1251_chip_wakeup(struct wl1251 *wl)
-{
- int ret = 0;
-
- wl1251_power_on(wl);
- msleep(WL1251_POWER_ON_SLEEP);
- wl->if_ops->reset(wl);
-
- /* We don't need a real memory partition here, because we only want
- * to use the registers at this point. */
- wl1251_set_partition(wl,
- 0x00000000,
- 0x00000000,
- REGISTERS_BASE,
- REGISTERS_DOWN_SIZE);
-
- /* ELP module wake up */
- wl1251_fw_wakeup(wl);
-
- /* whal_FwCtrl_BootSm() */
-
- /* 0. read chip id from CHIP_ID */
- wl->chip_id = wl1251_reg_read32(wl, CHIP_ID_B);
-
- /* 1. check if chip id is valid */
-
- switch (wl->chip_id) {
- case CHIP_ID_1251_PG12:
- wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG12)",
- wl->chip_id);
- break;
- case CHIP_ID_1251_PG11:
- wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG11)",
- wl->chip_id);
- break;
- case CHIP_ID_1251_PG10:
- default:
- wl1251_error("unsupported chip id: 0x%x", wl->chip_id);
- ret = -ENODEV;
- goto out;
- }
-
- if (wl->fw == NULL) {
- ret = wl1251_fetch_firmware(wl);
- if (ret < 0)
- goto out;
- }
-
- if (wl->nvs == NULL && !wl->use_eeprom) {
- /* No NVS from netlink, try to get it from the filesystem */
- ret = wl1251_fetch_nvs(wl);
- if (ret < 0)
- goto out;
- }
-
-out:
- return ret;
-}
-
-#define WL1251_IRQ_LOOP_COUNT 10
-static void wl1251_irq_work(struct work_struct *work)
-{
- u32 intr, ctr = WL1251_IRQ_LOOP_COUNT;
- struct wl1251 *wl =
- container_of(work, struct wl1251, irq_work);
- int ret;
-
- mutex_lock(&wl->mutex);
-
- wl1251_debug(DEBUG_IRQ, "IRQ work");
-
- if (wl->state == WL1251_STATE_OFF)
- goto out;
-
- ret = wl1251_ps_elp_wakeup(wl);
- if (ret < 0)
- goto out;
-
- wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1251_ACX_INTR_ALL);
-
- intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
- wl1251_debug(DEBUG_IRQ, "intr: 0x%x", intr);
-
- do {
- if (wl->data_path) {
- wl->rx_counter = wl1251_mem_read32(
- wl, wl->data_path->rx_control_addr);
-
- /* We handle a frmware bug here */
- switch ((wl->rx_counter - wl->rx_handled) & 0xf) {
- case 0:
- wl1251_debug(DEBUG_IRQ,
- "RX: FW and host in sync");
- intr &= ~WL1251_ACX_INTR_RX0_DATA;
- intr &= ~WL1251_ACX_INTR_RX1_DATA;
- break;
- case 1:
- wl1251_debug(DEBUG_IRQ, "RX: FW +1");
- intr |= WL1251_ACX_INTR_RX0_DATA;
- intr &= ~WL1251_ACX_INTR_RX1_DATA;
- break;
- case 2:
- wl1251_debug(DEBUG_IRQ, "RX: FW +2");
- intr |= WL1251_ACX_INTR_RX0_DATA;
- intr |= WL1251_ACX_INTR_RX1_DATA;
- break;
- default:
- wl1251_warning(
- "RX: FW and host out of sync: %d",
- wl->rx_counter - wl->rx_handled);
- break;
- }
-
- wl->rx_handled = wl->rx_counter;
-
- wl1251_debug(DEBUG_IRQ, "RX counter: %d",
- wl->rx_counter);
- }
-
- intr &= wl->intr_mask;
-
- if (intr == 0) {
- wl1251_debug(DEBUG_IRQ, "INTR is 0");
- goto out_sleep;
- }
-
- if (intr & WL1251_ACX_INTR_RX0_DATA) {
- wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX0_DATA");
- wl1251_rx(wl);
- }
-
- if (intr & WL1251_ACX_INTR_RX1_DATA) {
- wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX1_DATA");
- wl1251_rx(wl);
- }
-
- if (intr & WL1251_ACX_INTR_TX_RESULT) {
- wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_TX_RESULT");
- wl1251_tx_complete(wl);
- }
-
- if (intr & (WL1251_ACX_INTR_EVENT_A |
- WL1251_ACX_INTR_EVENT_B)) {
- wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT (0x%x)",
- intr);
- if (intr & WL1251_ACX_INTR_EVENT_A)
- wl1251_event_handle(wl, 0);
- else
- wl1251_event_handle(wl, 1);
- }
-
- if (intr & WL1251_ACX_INTR_INIT_COMPLETE)
- wl1251_debug(DEBUG_IRQ,
- "WL1251_ACX_INTR_INIT_COMPLETE");
-
- if (--ctr == 0)
- break;
-
- intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
- } while (intr);
-
-out_sleep:
- wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask));
- wl1251_ps_elp_sleep(wl);
-
-out:
- mutex_unlock(&wl->mutex);
-}
-
-static int wl1251_join(struct wl1251 *wl, u8 bss_type, u8 channel,
- u16 beacon_interval, u8 dtim_period)
-{
- int ret;
-
- ret = wl1251_acx_frame_rates(wl, DEFAULT_HW_GEN_TX_RATE,
- DEFAULT_HW_GEN_MODULATION_TYPE,
- wl->tx_mgmt_frm_rate,
- wl->tx_mgmt_frm_mod);
- if (ret < 0)
- goto out;
-
-
- ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval,
- dtim_period);
- if (ret < 0)
- goto out;
-
- /*
- * FIXME: we should wait for JOIN_EVENT_COMPLETE_ID but to simplify
- * locking we just sleep instead, for now
- */
- msleep(10);
-
-out:
- return ret;
-}
-
-static void wl1251_filter_work(struct work_struct *work)
-{
- struct wl1251 *wl =
- container_of(work, struct wl1251, filter_work);
- int ret;
-
- mutex_lock(&wl->mutex);
-
- if (wl->state == WL1251_STATE_OFF)
- goto out;
-
- ret = wl1251_ps_elp_wakeup(wl);
- if (ret < 0)
- goto out;
-
- ret = wl1251_join(wl, wl->bss_type, wl->channel, wl->beacon_int,
- wl->dtim_period);
- if (ret < 0)
- goto out_sleep;
-
-out_sleep:
- wl1251_ps_elp_sleep(wl);
-
-out:
- mutex_unlock(&wl->mutex);
-}
-
-static int wl1251_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
-{
- struct wl1251 *wl = hw->priv;
-
- skb_queue_tail(&wl->tx_queue, skb);
-
- /*
- * The chip specific setup must run before the first TX packet -
- * before that, the tx_work will not be initialized!
- */
-
- ieee80211_queue_work(wl->hw, &wl->tx_work);
-
- /*
- * The workqueue is slow to process the tx_queue and we need stop
- * the queue here, otherwise the queue will get too long.
- */
- if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_MAX_LENGTH) {
- wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues");
- ieee80211_stop_queues(wl->hw);
-
- /*
- * FIXME: this is racy, the variable is not properly
- * protected. Maybe fix this by removing the stupid
- * variable altogether and checking the real queue state?
- */
- wl->tx_queue_stopped = true;
- }
-
- return NETDEV_TX_OK;
-}
-
-static int wl1251_op_start(struct ieee80211_hw *hw)
-{
- struct wl1251 *wl = hw->priv;
- struct wiphy *wiphy = hw->wiphy;
- int ret = 0;
-
- wl1251_debug(DEBUG_MAC80211, "mac80211 start");
-
- mutex_lock(&wl->mutex);
-
- if (wl->state != WL1251_STATE_OFF) {
- wl1251_error("cannot start because not in off state: %d",
- wl->state);
- ret = -EBUSY;
- goto out;
- }
-
- ret = wl1251_chip_wakeup(wl);
- if (ret < 0)
- goto out;
-
- ret = wl1251_boot(wl);
- if (ret < 0)
- goto out;
-
- ret = wl1251_hw_init(wl);
- if (ret < 0)
- goto out;
-
- ret = wl1251_acx_station_id(wl);
- if (ret < 0)
- goto out;
-
- wl->state = WL1251_STATE_ON;
-
- wl1251_info("firmware booted (%s)", wl->fw_ver);
-
- /* update hw/fw version info in wiphy struct */
- wiphy->hw_version = wl->chip_id;
- strncpy(wiphy->fw_version, wl->fw_ver, sizeof(wiphy->fw_version));
-
-out:
- if (ret < 0)
- wl1251_power_off(wl);
-
- mutex_unlock(&wl->mutex);
-
- return ret;
-}
-
-static void wl1251_op_stop(struct ieee80211_hw *hw)
-{
- struct wl1251 *wl = hw->priv;
-
- wl1251_info("down");
-
- wl1251_debug(DEBUG_MAC80211, "mac80211 stop");
-
- mutex_lock(&wl->mutex);
-
- WARN_ON(wl->state != WL1251_STATE_ON);
-
- if (wl->scanning) {
- mutex_unlock(&wl->mutex);
- ieee80211_scan_completed(wl->hw, true);
- mutex_lock(&wl->mutex);
- wl->scanning = false;
- }
-
- wl->state = WL1251_STATE_OFF;
-
- wl1251_disable_interrupts(wl);
-
- mutex_unlock(&wl->mutex);
-
- cancel_work_sync(&wl->irq_work);
- cancel_work_sync(&wl->tx_work);
- cancel_work_sync(&wl->filter_work);
-
- mutex_lock(&wl->mutex);
-
- /* let's notify MAC80211 about the remaining pending TX frames */
- wl1251_tx_flush(wl);
- wl1251_power_off(wl);
-
- memset(wl->bssid, 0, ETH_ALEN);
- wl->listen_int = 1;
- wl->bss_type = MAX_BSS_TYPE;
-
- wl->data_in_count = 0;
- wl->rx_counter = 0;
- wl->rx_handled = 0;
- wl->rx_current_buffer = 0;
- wl->rx_last_id = 0;
- wl->next_tx_complete = 0;
- wl->elp = false;
- wl->psm = 0;
- wl->tx_queue_stopped = false;
- wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
- wl->channel = WL1251_DEFAULT_CHANNEL;
-
- wl1251_debugfs_reset(wl);
-
- mutex_unlock(&wl->mutex);
-}
-
-static int wl1251_op_add_interface(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif)
-{
- struct wl1251 *wl = hw->priv;
- int ret = 0;
-
- wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
- vif->type, vif->addr);
-
- mutex_lock(&wl->mutex);
- if (wl->vif) {
- ret = -EBUSY;
- goto out;
- }
-
- wl->vif = vif;
-
- switch (vif->type) {
- case NL80211_IFTYPE_STATION:
- wl->bss_type = BSS_TYPE_STA_BSS;
- break;
- case NL80211_IFTYPE_ADHOC:
- wl->bss_type = BSS_TYPE_IBSS;
- break;
- default:
- ret = -EOPNOTSUPP;
- goto out;
- }
-
- if (memcmp(wl->mac_addr, vif->addr, ETH_ALEN)) {
- memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
- SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
- ret = wl1251_acx_station_id(wl);
- if (ret < 0)
- goto out;
- }
-
-out:
- mutex_unlock(&wl->mutex);
- return ret;
-}
-
-static void wl1251_op_remove_interface(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif)
-{
- struct wl1251 *wl = hw->priv;
-
- mutex_lock(&wl->mutex);
- wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface");
- wl->vif = NULL;
- mutex_unlock(&wl->mutex);
-}
-
-static int wl1251_build_qos_null_data(struct wl1251 *wl)
-{
- struct ieee80211_qos_hdr template;
-
- memset(&template, 0, sizeof(template));
-
- memcpy(template.addr1, wl->bssid, ETH_ALEN);
- memcpy(template.addr2, wl->mac_addr, ETH_ALEN);
- memcpy(template.addr3, wl->bssid, ETH_ALEN);
-
- template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
- IEEE80211_STYPE_QOS_NULLFUNC |
- IEEE80211_FCTL_TODS);
-
- /* FIXME: not sure what priority to use here */
- template.qos_ctrl = cpu_to_le16(0);
-
- return wl1251_cmd_template_set(wl, CMD_QOS_NULL_DATA, &template,
- sizeof(template));
-}
-
-static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
-{
- struct wl1251 *wl = hw->priv;
- struct ieee80211_conf *conf = &hw->conf;
- int channel, ret = 0;
-
- channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
-
- wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
- channel,
- conf->flags & IEEE80211_CONF_PS ? "on" : "off",
- conf->power_level);
-
- mutex_lock(&wl->mutex);
-
- ret = wl1251_ps_elp_wakeup(wl);
- if (ret < 0)
- goto out;
-
- if (channel != wl->channel) {
- wl->channel = channel;
-
- ret = wl1251_join(wl, wl->bss_type, wl->channel,
- wl->beacon_int, wl->dtim_period);
- if (ret < 0)
- goto out_sleep;
- }
-
- if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
- wl1251_debug(DEBUG_PSM, "psm enabled");
-
- wl->psm_requested = true;
-
- wl->dtim_period = conf->ps_dtim_period;
-
- ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int,
- wl->dtim_period);
-
- /*
- * mac80211 enables PSM only if we're already associated.
- */
- ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
- if (ret < 0)
- goto out_sleep;
- } else if (!(conf->flags & IEEE80211_CONF_PS) &&
- wl->psm_requested) {
- wl1251_debug(DEBUG_PSM, "psm disabled");
-
- wl->psm_requested = false;
-
- if (wl->psm) {
- ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
- if (ret < 0)
- goto out_sleep;
- }
- }
-
- if (conf->power_level != wl->power_level) {
- ret = wl1251_acx_tx_power(wl, conf->power_level);
- if (ret < 0)
- goto out_sleep;
-
- wl->power_level = conf->power_level;
- }
-
-out_sleep:
- wl1251_ps_elp_sleep(wl);
-
-out:
- mutex_unlock(&wl->mutex);
-
- return ret;
-}
-
-#define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
- FIF_ALLMULTI | \
- FIF_FCSFAIL | \
- FIF_BCN_PRBRESP_PROMISC | \
- FIF_CONTROL | \
- FIF_OTHER_BSS)
-
-static void wl1251_op_configure_filter(struct ieee80211_hw *hw,
- unsigned int changed,
- unsigned int *total,u64 multicast)
-{
- struct wl1251 *wl = hw->priv;
-
- wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter");
-
- *total &= WL1251_SUPPORTED_FILTERS;
- changed &= WL1251_SUPPORTED_FILTERS;
-
- if (changed == 0)
- /* no filters which we support changed */
- return;
-
- /* FIXME: wl->rx_config and wl->rx_filter are not protected */
-
- wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
- wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
-
- if (*total & FIF_PROMISC_IN_BSS) {
- wl->rx_config |= CFG_BSSID_FILTER_EN;
- wl->rx_config |= CFG_RX_ALL_GOOD;
- }
- if (*total & FIF_ALLMULTI)
- /*
- * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
- * all multicast frames
- */
- wl->rx_config &= ~CFG_MC_FILTER_EN;
- if (*total & FIF_FCSFAIL)
- wl->rx_filter |= CFG_RX_FCS_ERROR;
- if (*total & FIF_BCN_PRBRESP_PROMISC) {
- wl->rx_config &= ~CFG_BSSID_FILTER_EN;
- wl->rx_config &= ~CFG_SSID_FILTER_EN;
- }
- if (*total & FIF_CONTROL)
- wl->rx_filter |= CFG_RX_CTL_EN;
- if (*total & FIF_OTHER_BSS)
- wl->rx_filter &= ~CFG_BSSID_FILTER_EN;
-
- /*
- * FIXME: workqueues need to be properly cancelled on stop(), for
- * now let's just disable changing the filter settings. They will
- * be updated any on config().
- */
- /* schedule_work(&wl->filter_work); */
-}
-
-/* HW encryption */
-static int wl1251_set_key_type(struct wl1251 *wl,
- struct wl1251_cmd_set_keys *key,
- enum set_key_cmd cmd,
- struct ieee80211_key_conf *mac80211_key,
- const u8 *addr)
-{
- switch (mac80211_key->alg) {
- case ALG_WEP:
- if (is_broadcast_ether_addr(addr))
- key->key_type = KEY_WEP_DEFAULT;
- else
- key->key_type = KEY_WEP_ADDR;
-
- mac80211_key->hw_key_idx = mac80211_key->keyidx;
- break;
- case ALG_TKIP:
- if (is_broadcast_ether_addr(addr))
- key->key_type = KEY_TKIP_MIC_GROUP;
- else
- key->key_type = KEY_TKIP_MIC_PAIRWISE;
-
- mac80211_key->hw_key_idx = mac80211_key->keyidx;
- break;
- case ALG_CCMP:
- if (is_broadcast_ether_addr(addr))
- key->key_type = KEY_AES_GROUP;
- else
- key->key_type = KEY_AES_PAIRWISE;
- mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
- break;
- default:
- wl1251_error("Unknown key algo 0x%x", mac80211_key->alg);
- return -EOPNOTSUPP;
- }
-
- return 0;
-}
-
-static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
- struct ieee80211_vif *vif,
- struct ieee80211_sta *sta,
- struct ieee80211_key_conf *key)
-{
- struct wl1251 *wl = hw->priv;
- struct wl1251_cmd_set_keys *wl_cmd;
- const u8 *addr;
- int ret;
-
- static const u8 bcast_addr[ETH_ALEN] =
- { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
-
- wl1251_debug(DEBUG_MAC80211, "mac80211 set key");
-
- wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
- if (!wl_cmd) {
- ret = -ENOMEM;
- goto out;
- }
-
- addr = sta ? sta->addr : bcast_addr;
-
- wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
- wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
- wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
- key->alg, key->keyidx, key->keylen, key->flags);
- wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
-
- if (is_zero_ether_addr(addr)) {
- /* We dont support TX only encryption */
- ret = -EOPNOTSUPP;
- goto out;
- }
-
- mutex_lock(&wl->mutex);
-
- ret = wl1251_ps_elp_wakeup(wl);
- if (ret < 0)
- goto out_unlock;
-
- switch (cmd) {
- case SET_KEY:
- wl_cmd->key_action = KEY_ADD_OR_REPLACE;
- break;
- case DISABLE_KEY:
- wl_cmd->key_action = KEY_REMOVE;
- break;
- default:
- wl1251_error("Unsupported key cmd 0x%x", cmd);
- break;
- }
-
- ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr);
- if (ret < 0) {
- wl1251_error("Set KEY type failed");
- goto out_sleep;
- }
-
- if (wl_cmd->key_type != KEY_WEP_DEFAULT)
- memcpy(wl_cmd->addr, addr, ETH_ALEN);
-
- if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
- (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
- /*
- * We get the key in the following form:
- * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
- * but the target is expecting:
- * TKIP - RX MIC - TX MIC
- */
- memcpy(wl_cmd->key, key->key, 16);
- memcpy(wl_cmd->key + 16, key->key + 24, 8);
- memcpy(wl_cmd->key + 24, key->key + 16, 8);
-
- } else {
- memcpy(wl_cmd->key, key->key, key->keylen);
- }
- wl_cmd->key_size = key->keylen;
-
- wl_cmd->id = key->keyidx;
- wl_cmd->ssid_profile = 0;
-
- wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
-
- ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
- if (ret < 0) {
- wl1251_warning("could not set keys");
- goto out_sleep;
- }
-
-out_sleep:
- wl1251_ps_elp_sleep(wl);
-
-out_unlock:
- mutex_unlock(&wl->mutex);
-
-out:
- kfree(wl_cmd);
-
- return ret;
-}
-
-static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct cfg80211_scan_request *req)
-{
- struct wl1251 *wl = hw->priv;
- struct sk_buff *skb;
- size_t ssid_len = 0;
- u8 *ssid = NULL;
- int ret;
-
- wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
-
- if (req->n_ssids) {
- ssid = req->ssids[0].ssid;
- ssid_len = req->ssids[0].ssid_len;
- }
-
- mutex_lock(&wl->mutex);
-
- if (wl->scanning) {
- wl1251_debug(DEBUG_SCAN, "scan already in progress");
- ret = -EINVAL;
- goto out;
- }
-
- ret = wl1251_ps_elp_wakeup(wl);
- if (ret < 0)
- goto out;
-
- skb = ieee80211_probereq_get(wl->hw, wl->vif, ssid, ssid_len,
- req->ie, req->ie_len);
- if (!skb) {
- ret = -ENOMEM;
- goto out;
- }
-
- ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, skb->data,
- skb->len);
- dev_kfree_skb(skb);
- if (ret < 0)
- goto out_sleep;
-
- ret = wl1251_cmd_trigger_scan_to(wl, 0);
- if (ret < 0)
- goto out_sleep;
-
- wl->scanning = true;
-
- ret = wl1251_cmd_scan(wl, ssid, ssid_len, req->channels,
- req->n_channels, WL1251_SCAN_NUM_PROBES);
- if (ret < 0) {
- wl->scanning = false;
- goto out_sleep;
- }
-
-out_sleep:
- wl1251_ps_elp_sleep(wl);
-
-out:
- mutex_unlock(&wl->mutex);
-
- return ret;
-}
-
-static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
-{
- struct wl1251 *wl = hw->priv;
- int ret;
-
- mutex_lock(&wl->mutex);
-
- ret = wl1251_ps_elp_wakeup(wl);
- if (ret < 0)
- goto out;
-
- ret = wl1251_acx_rts_threshold(wl, (u16) value);
- if (ret < 0)
- wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret);
-
- wl1251_ps_elp_sleep(wl);
-
-out:
- mutex_unlock(&wl->mutex);
-
- return ret;
-}
-
-static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct ieee80211_bss_conf *bss_conf,
- u32 changed)
-{
- struct wl1251 *wl = hw->priv;
- struct sk_buff *beacon, *skb;
- int ret;
-
- wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed");
-
- mutex_lock(&wl->mutex);
-
- ret = wl1251_ps_elp_wakeup(wl);
- if (ret < 0)
- goto out;
-
- if (changed & BSS_CHANGED_BSSID) {
- memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
-
- skb = ieee80211_nullfunc_get(wl->hw, wl->vif);
- if (!skb)
- goto out_sleep;
-
- ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA,
- skb->data, skb->len);
- dev_kfree_skb(skb);
- if (ret < 0)
- goto out_sleep;
-
- ret = wl1251_build_qos_null_data(wl);
- if (ret < 0)
- goto out;
-
- if (wl->bss_type != BSS_TYPE_IBSS) {
- ret = wl1251_join(wl, wl->bss_type, wl->channel,
- wl->beacon_int, wl->dtim_period);
- if (ret < 0)
- goto out_sleep;
- }
- }
-
- if (changed & BSS_CHANGED_ASSOC) {
- if (bss_conf->assoc) {
- wl->beacon_int = bss_conf->beacon_int;
-
- skb = ieee80211_pspoll_get(wl->hw, wl->vif);
- if (!skb)
- goto out_sleep;
-
- ret = wl1251_cmd_template_set(wl, CMD_PS_POLL,
- skb->data,
- skb->len);
- dev_kfree_skb(skb);
- if (ret < 0)
- goto out_sleep;
-
- ret = wl1251_acx_aid(wl, bss_conf->aid);
- if (ret < 0)
- goto out_sleep;
- } else {
- /* use defaults when not associated */
- wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
- wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
- }
- }
- if (changed & BSS_CHANGED_ERP_SLOT) {
- if (bss_conf->use_short_slot)
- ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT);
- else
- ret = wl1251_acx_slot(wl, SLOT_TIME_LONG);
- if (ret < 0) {
- wl1251_warning("Set slot time failed %d", ret);
- goto out_sleep;
- }
- }
-
- if (changed & BSS_CHANGED_ERP_PREAMBLE) {
- if (bss_conf->use_short_preamble)
- wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
- else
- wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
- }
-
- if (changed & BSS_CHANGED_ERP_CTS_PROT) {
- if (bss_conf->use_cts_prot)
- ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE);
- else
- ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE);
- if (ret < 0) {
- wl1251_warning("Set ctsprotect failed %d", ret);
- goto out_sleep;
- }
- }
-
- if (changed & BSS_CHANGED_BEACON) {
- beacon = ieee80211_beacon_get(hw, vif);
- ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data,
- beacon->len);
-
- if (ret < 0) {
- dev_kfree_skb(beacon);
- goto out_sleep;
- }
-
- ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
- beacon->len);
-
- dev_kfree_skb(beacon);
-
- if (ret < 0)
- goto out_sleep;
-
- ret = wl1251_join(wl, wl->bss_type, wl->beacon_int,
- wl->channel, wl->dtim_period);
-
- if (ret < 0)
- goto out_sleep;
- }
-
-out_sleep:
- wl1251_ps_elp_sleep(wl);
-
-out:
- mutex_unlock(&wl->mutex);
-}
-
-
-/* can't be const, mac80211 writes to this */
-static struct ieee80211_rate wl1251_rates[] = {
- { .bitrate = 10,
- .hw_value = 0x1,
- .hw_value_short = 0x1, },
- { .bitrate = 20,
- .hw_value = 0x2,
- .hw_value_short = 0x2,
- .flags = IEEE80211_RATE_SHORT_PREAMBLE },
- { .bitrate = 55,
- .hw_value = 0x4,
- .hw_value_short = 0x4,
- .flags = IEEE80211_RATE_SHORT_PREAMBLE },
- { .bitrate = 110,
- .hw_value = 0x20,
- .hw_value_short = 0x20,
- .flags = IEEE80211_RATE_SHORT_PREAMBLE },
- { .bitrate = 60,
- .hw_value = 0x8,
- .hw_value_short = 0x8, },
- { .bitrate = 90,
- .hw_value = 0x10,
- .hw_value_short = 0x10, },
- { .bitrate = 120,
- .hw_value = 0x40,
- .hw_value_short = 0x40, },
- { .bitrate = 180,
- .hw_value = 0x80,
- .hw_value_short = 0x80, },
- { .bitrate = 240,
- .hw_value = 0x200,
- .hw_value_short = 0x200, },
- { .bitrate = 360,
- .hw_value = 0x400,
- .hw_value_short = 0x400, },
- { .bitrate = 480,
- .hw_value = 0x800,
- .hw_value_short = 0x800, },
- { .bitrate = 540,
- .hw_value = 0x1000,
- .hw_value_short = 0x1000, },
-};
-
-/* can't be const, mac80211 writes to this */
-static struct ieee80211_channel wl1251_channels[] = {
- { .hw_value = 1, .center_freq = 2412},
- { .hw_value = 2, .center_freq = 2417},
- { .hw_value = 3, .center_freq = 2422},
- { .hw_value = 4, .center_freq = 2427},
- { .hw_value = 5, .center_freq = 2432},
- { .hw_value = 6, .center_freq = 2437},
- { .hw_value = 7, .center_freq = 2442},
- { .hw_value = 8, .center_freq = 2447},
- { .hw_value = 9, .center_freq = 2452},
- { .hw_value = 10, .center_freq = 2457},
- { .hw_value = 11, .center_freq = 2462},
- { .hw_value = 12, .center_freq = 2467},
- { .hw_value = 13, .center_freq = 2472},
-};
-
-static int wl1251_op_conf_tx(struct ieee80211_hw *hw, u16 queue,
- const struct ieee80211_tx_queue_params *params)
-{
- enum wl1251_acx_ps_scheme ps_scheme;
- struct wl1251 *wl = hw->priv;
- int ret;
-
- mutex_lock(&wl->mutex);
-
- wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
-
- ret = wl1251_ps_elp_wakeup(wl);
- if (ret < 0)
- goto out;
-
- /* mac80211 uses units of 32 usec */
- ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue),
- params->cw_min, params->cw_max,
- params->aifs, params->txop * 32);
- if (ret < 0)
- goto out_sleep;
-
- if (params->uapsd)
- ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER;
- else
- ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY;
-
- ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue),
- CHANNEL_TYPE_EDCF,
- wl1251_tx_get_queue(queue), ps_scheme,
- WL1251_ACX_ACK_POLICY_LEGACY);
- if (ret < 0)
- goto out_sleep;
-
-out_sleep:
- wl1251_ps_elp_sleep(wl);
-
-out:
- mutex_unlock(&wl->mutex);
-
- return ret;
-}
-
-static int wl1251_op_get_survey(struct ieee80211_hw *hw, int idx,
- struct survey_info *survey)
-{
- struct wl1251 *wl = hw->priv;
- struct ieee80211_conf *conf = &hw->conf;
-
- if (idx != 0)
- return -ENOENT;
-
- survey->channel = conf->channel;
- survey->filled = SURVEY_INFO_NOISE_DBM;
- survey->noise = wl->noise;
-
- return 0;
-}
-
-/* can't be const, mac80211 writes to this */
-static struct ieee80211_supported_band wl1251_band_2ghz = {
- .channels = wl1251_channels,
- .n_channels = ARRAY_SIZE(wl1251_channels),
- .bitrates = wl1251_rates,
- .n_bitrates = ARRAY_SIZE(wl1251_rates),
-};
-
-static const struct ieee80211_ops wl1251_ops = {
- .start = wl1251_op_start,
- .stop = wl1251_op_stop,
- .add_interface = wl1251_op_add_interface,
- .remove_interface = wl1251_op_remove_interface,
- .config = wl1251_op_config,
- .configure_filter = wl1251_op_configure_filter,
- .tx = wl1251_op_tx,
- .set_key = wl1251_op_set_key,
- .hw_scan = wl1251_op_hw_scan,
- .bss_info_changed = wl1251_op_bss_info_changed,
- .set_rts_threshold = wl1251_op_set_rts_threshold,
- .conf_tx = wl1251_op_conf_tx,
- .get_survey = wl1251_op_get_survey,
-};
-
-static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data)
-{
- unsigned long timeout;
-
- wl1251_reg_write32(wl, EE_ADDR, offset);
- wl1251_reg_write32(wl, EE_CTL, EE_CTL_READ);
-
- /* EE_CTL_READ clears when data is ready */
- timeout = jiffies + msecs_to_jiffies(100);
- while (1) {
- if (!(wl1251_reg_read32(wl, EE_CTL) & EE_CTL_READ))
- break;
-
- if (time_after(jiffies, timeout))
- return -ETIMEDOUT;
-
- msleep(1);
- }
-
- *data = wl1251_reg_read32(wl, EE_DATA);
- return 0;
-}
-
-static int wl1251_read_eeprom(struct wl1251 *wl, off_t offset,
- u8 *data, size_t len)
-{
- size_t i;
- int ret;
-
- wl1251_reg_write32(wl, EE_START, 0);
-
- for (i = 0; i < len; i++) {
- ret = wl1251_read_eeprom_byte(wl, offset + i, &data[i]);
- if (ret < 0)
- return ret;
- }
-
- return 0;
-}
-
-static int wl1251_read_eeprom_mac(struct wl1251 *wl)
-{
- u8 mac[ETH_ALEN];
- int i, ret;
-
- wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE);
-
- ret = wl1251_read_eeprom(wl, 0x1c, mac, sizeof(mac));
- if (ret < 0) {
- wl1251_warning("failed to read MAC address from EEPROM");
- return ret;
- }
-
- /* MAC is stored in reverse order */
- for (i = 0; i < ETH_ALEN; i++)
- wl->mac_addr[i] = mac[ETH_ALEN - i - 1];
-
- return 0;
-}
-
-static int wl1251_register_hw(struct wl1251 *wl)
-{
- int ret;
-
- if (wl->mac80211_registered)
- return 0;
-
- SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
-
- ret = ieee80211_register_hw(wl->hw);
- if (ret < 0) {
- wl1251_error("unable to register mac80211 hw: %d", ret);
- return ret;
- }
-
- wl->mac80211_registered = true;
-
- wl1251_notice("loaded");
-
- return 0;
-}
-
-int wl1251_init_ieee80211(struct wl1251 *wl)
-{
- int ret;
-
- /* The tx descriptor buffer and the TKIP space */
- wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
- + WL1251_TKIP_IV_SPACE;
-
- /* unit us */
- /* FIXME: find a proper value */
- wl->hw->channel_change_time = 10000;
-
- wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
- IEEE80211_HW_SUPPORTS_PS |
- IEEE80211_HW_BEACON_FILTER |
- IEEE80211_HW_SUPPORTS_UAPSD;
-
- wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
- wl->hw->wiphy->max_scan_ssids = 1;
- wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz;
-
- wl->hw->queues = 4;
-
- if (wl->use_eeprom)
- wl1251_read_eeprom_mac(wl);
-
- ret = wl1251_register_hw(wl);
- if (ret)
- goto out;
-
- wl1251_debugfs_init(wl);
- wl1251_notice("initialized");
-
- ret = 0;
-
-out:
- return ret;
-}
-EXPORT_SYMBOL_GPL(wl1251_init_ieee80211);
-
-struct ieee80211_hw *wl1251_alloc_hw(void)
-{
- struct ieee80211_hw *hw;
- struct wl1251 *wl;
- int i;
- static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
-
- hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
- if (!hw) {
- wl1251_error("could not alloc ieee80211_hw");
- return ERR_PTR(-ENOMEM);
- }
-
- wl = hw->priv;
- memset(wl, 0, sizeof(*wl));
-
- wl->hw = hw;
-
- wl->data_in_count = 0;
-
- skb_queue_head_init(&wl->tx_queue);
-
- INIT_WORK(&wl->filter_work, wl1251_filter_work);
- INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work);
- wl->channel = WL1251_DEFAULT_CHANNEL;
- wl->scanning = false;
- wl->default_key = 0;
- wl->listen_int = 1;
- wl->rx_counter = 0;
- wl->rx_handled = 0;
- wl->rx_current_buffer = 0;
- wl->rx_last_id = 0;
- wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
- wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
- wl->elp = false;
- wl->psm = 0;
- wl->psm_requested = false;
- wl->tx_queue_stopped = false;
- wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
- wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
- wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
- wl->vif = NULL;
-
- for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
- wl->tx_frames[i] = NULL;
-
- wl->next_tx_complete = 0;
-
- INIT_WORK(&wl->irq_work, wl1251_irq_work);
- INIT_WORK(&wl->tx_work, wl1251_tx_work);
-
- /*
- * In case our MAC address is not correctly set,
- * we use a random but Nokia MAC.
- */
- memcpy(wl->mac_addr, nokia_oui, 3);
- get_random_bytes(wl->mac_addr + 3, 3);
-
- wl->state = WL1251_STATE_OFF;
- mutex_init(&wl->mutex);
-
- wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
- wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
-
- wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
- if (!wl->rx_descriptor) {
- wl1251_error("could not allocate memory for rx descriptor");
- ieee80211_free_hw(hw);
- return ERR_PTR(-ENOMEM);
- }
-
- return hw;
-}
-EXPORT_SYMBOL_GPL(wl1251_alloc_hw);
-
-int wl1251_free_hw(struct wl1251 *wl)
-{
- ieee80211_unregister_hw(wl->hw);
-
- wl1251_debugfs_exit(wl);
-
- kfree(wl->target_mem_map);
- kfree(wl->data_path);
- vfree(wl->fw);
- wl->fw = NULL;
- kfree(wl->nvs);
- wl->nvs = NULL;
-
- kfree(wl->rx_descriptor);
- wl->rx_descriptor = NULL;
-
- ieee80211_free_hw(wl->hw);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(wl1251_free_hw);
-
-MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Kalle Valo <kalle.valo@nokia.com>");
-MODULE_FIRMWARE(WL1251_FW_NAME);
projects / mv-sheeva.git / blobdiff