diff options
Diffstat (limited to 'drivers/net/wireless/wl12xx/wl1271_main.c')
| -rw-r--r-- | drivers/net/wireless/wl12xx/wl1271_main.c | 1393 |
1 files changed, 0 insertions, 1393 deletions
diff --git a/drivers/net/wireless/wl12xx/wl1271_main.c b/drivers/net/wireless/wl12xx/wl1271_main.c deleted file mode 100644 index 27298b19d5b..00000000000 --- a/drivers/net/wireless/wl12xx/wl1271_main.c +++ /dev/null @@ -1,1393 +0,0 @@ -/* - * This file is part of wl1271 - * - * Copyright (C) 2008-2009 Nokia Corporation - * - * Contact: Luciano Coelho <luciano.coelho@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/platform_device.h> -#include <linux/interrupt.h> -#include <linux/firmware.h> -#include <linux/delay.h> -#include <linux/irq.h> -#include <linux/spi/spi.h> -#include <linux/crc32.h> -#include <linux/etherdevice.h> -#include <linux/spi/wl12xx.h> - -#include "wl1271.h" -#include "wl12xx_80211.h" -#include "wl1271_reg.h" -#include "wl1271_spi.h" -#include "wl1271_event.h" -#include "wl1271_tx.h" -#include "wl1271_rx.h" -#include "wl1271_ps.h" -#include "wl1271_init.h" -#include "wl1271_debugfs.h" -#include "wl1271_cmd.h" -#include "wl1271_boot.h" - -static int wl1271_plt_init(struct wl1271 *wl) -{ - int ret; - - ret = wl1271_acx_init_mem_config(wl); - if (ret < 0) - return ret; - - ret = wl1271_cmd_data_path(wl, wl->channel, 1); - if (ret < 0) - return ret; - - return 0; -} - -static void wl1271_disable_interrupts(struct wl1271 *wl) -{ - disable_irq(wl->irq); -} - -static void wl1271_power_off(struct wl1271 *wl) -{ - wl->set_power(false); -} - -static void wl1271_power_on(struct wl1271 *wl) -{ - wl->set_power(true); -} - -static void wl1271_fw_status(struct wl1271 *wl, struct wl1271_fw_status *status) -{ - u32 total = 0; - int i; - - /* - * FIXME: Reading the FW status directly from the registers seems to - * be the right thing to do, but it doesn't work. And in the - * reference driver, there is a workaround called - * USE_SDIO_24M_WORKAROUND, which reads the status from memory - * instead, so we do the same here. - */ - - wl1271_spi_mem_read(wl, STATUS_MEM_ADDRESS, status, sizeof(*status)); - - wl1271_debug(DEBUG_IRQ, "intr: 0x%x (fw_rx_counter = %d, " - "drv_rx_counter = %d, tx_results_counter = %d)", - status->intr, - status->fw_rx_counter, - status->drv_rx_counter, - status->tx_results_counter); - - /* update number of available TX blocks */ - for (i = 0; i < NUM_TX_QUEUES; i++) { - u32 cnt = status->tx_released_blks[i] - wl->tx_blocks_freed[i]; - wl->tx_blocks_freed[i] = status->tx_released_blks[i]; - wl->tx_blocks_available += cnt; - total += cnt; - } - - /* if more blocks are available now, schedule some tx work */ - if (total && !skb_queue_empty(&wl->tx_queue)) - schedule_work(&wl->tx_work); - - /* update the host-chipset time offset */ - wl->time_offset = jiffies_to_usecs(jiffies) - status->fw_localtime; -} - -#define WL1271_IRQ_MAX_LOOPS 10 -static void wl1271_irq_work(struct work_struct *work) -{ - u32 intr, ctr = WL1271_IRQ_MAX_LOOPS; - int ret; - struct wl1271 *wl = - container_of(work, struct wl1271, irq_work); - - mutex_lock(&wl->mutex); - - wl1271_debug(DEBUG_IRQ, "IRQ work"); - - if (wl->state == WL1271_STATE_OFF) - goto out; - - ret = wl1271_ps_elp_wakeup(wl, true); - if (ret < 0) - goto out; - - wl1271_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1271_ACX_INTR_ALL); - - intr = wl1271_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR); - if (!intr) { - wl1271_debug(DEBUG_IRQ, "Zero interrupt received."); - goto out_sleep; - } - - intr &= WL1271_INTR_MASK; - - do { - wl1271_fw_status(wl, wl->fw_status); - - - if (intr & (WL1271_ACX_INTR_EVENT_A | - WL1271_ACX_INTR_EVENT_B)) { - wl1271_debug(DEBUG_IRQ, - "WL1271_ACX_INTR_EVENT (0x%x)", intr); - if (intr & WL1271_ACX_INTR_EVENT_A) - wl1271_event_handle(wl, 0); - else - wl1271_event_handle(wl, 1); - } - - if (intr & WL1271_ACX_INTR_INIT_COMPLETE) - wl1271_debug(DEBUG_IRQ, - "WL1271_ACX_INTR_INIT_COMPLETE"); - - if (intr & WL1271_ACX_INTR_HW_AVAILABLE) - wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_HW_AVAILABLE"); - - if (intr & WL1271_ACX_INTR_DATA) { - u8 tx_res_cnt = wl->fw_status->tx_results_counter - - wl->tx_results_count; - - wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_DATA"); - - /* check for tx results */ - if (tx_res_cnt) - wl1271_tx_complete(wl, tx_res_cnt); - - wl1271_rx(wl, wl->fw_status); - } - - intr = wl1271_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR); - intr &= WL1271_INTR_MASK; - } while (intr && --ctr); - -out_sleep: - wl1271_reg_write32(wl, ACX_REG_INTERRUPT_MASK, - WL1271_ACX_INTR_ALL & ~(WL1271_INTR_MASK)); - wl1271_ps_elp_sleep(wl); - -out: - mutex_unlock(&wl->mutex); -} - -static irqreturn_t wl1271_irq(int irq, void *cookie) -{ - struct wl1271 *wl; - unsigned long flags; - - wl1271_debug(DEBUG_IRQ, "IRQ"); - - wl = cookie; - - /* complete the ELP completion */ - spin_lock_irqsave(&wl->wl_lock, flags); - if (wl->elp_compl) { - complete(wl->elp_compl); - wl->elp_compl = NULL; - } - - schedule_work(&wl->irq_work); - spin_unlock_irqrestore(&wl->wl_lock, flags); - - return IRQ_HANDLED; -} - -static int wl1271_fetch_firmware(struct wl1271 *wl) -{ - const struct firmware *fw; - int ret; - - ret = request_firmware(&fw, WL1271_FW_NAME, &wl->spi->dev); - - if (ret < 0) { - wl1271_error("could not get firmware: %d", ret); - return ret; - } - - if (fw->size % 4) { - wl1271_error("firmware size is not multiple of 32 bits: %zu", - fw->size); - ret = -EILSEQ; - goto out; - } - - wl->fw_len = fw->size; - wl->fw = kmalloc(wl->fw_len, GFP_KERNEL); - - if (!wl->fw) { - wl1271_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 wl1271_fetch_nvs(struct wl1271 *wl) -{ - const struct firmware *fw; - int ret; - - ret = request_firmware(&fw, WL1271_NVS_NAME, &wl->spi->dev); - - if (ret < 0) { - wl1271_error("could not get nvs file: %d", ret); - return ret; - } - - if (fw->size % 4) { - wl1271_error("nvs size is not multiple of 32 bits: %zu", - fw->size); - ret = -EILSEQ; - goto out; - } - - wl->nvs_len = fw->size; - wl->nvs = kmalloc(wl->nvs_len, GFP_KERNEL); - - if (!wl->nvs) { - wl1271_error("could not allocate memory for the nvs file"); - ret = -ENOMEM; - goto out; - } - - memcpy(wl->nvs, fw->data, wl->nvs_len); - - ret = 0; - -out: - release_firmware(fw); - - return ret; -} - -static void wl1271_fw_wakeup(struct wl1271 *wl) -{ - u32 elp_reg; - - elp_reg = ELPCTRL_WAKE_UP; - wl1271_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg); -} - -static int wl1271_setup(struct wl1271 *wl) -{ - wl->fw_status = kmalloc(sizeof(*wl->fw_status), GFP_KERNEL); - if (!wl->fw_status) - return -ENOMEM; - - wl->tx_res_if = kmalloc(sizeof(*wl->tx_res_if), GFP_KERNEL); - if (!wl->tx_res_if) { - kfree(wl->fw_status); - return -ENOMEM; - } - - INIT_WORK(&wl->irq_work, wl1271_irq_work); - INIT_WORK(&wl->tx_work, wl1271_tx_work); - return 0; -} - -static int wl1271_chip_wakeup(struct wl1271 *wl) -{ - int ret = 0; - - wl1271_power_on(wl); - msleep(WL1271_POWER_ON_SLEEP); - wl1271_spi_reset(wl); - wl1271_spi_init(wl); - - /* We don't need a real memory partition here, because we only want - * to use the registers at this point. */ - wl1271_set_partition(wl, - 0x00000000, - 0x00000000, - REGISTERS_BASE, - REGISTERS_DOWN_SIZE); - - /* ELP module wake up */ - wl1271_fw_wakeup(wl); - - /* whal_FwCtrl_BootSm() */ - - /* 0. read chip id from CHIP_ID */ - wl->chip.id = wl1271_reg_read32(wl, CHIP_ID_B); - - /* 1. check if chip id is valid */ - - switch (wl->chip.id) { - case CHIP_ID_1271_PG10: - wl1271_warning("chip id 0x%x (1271 PG10) support is obsolete", - wl->chip.id); - - ret = wl1271_setup(wl); - if (ret < 0) - goto out; - break; - case CHIP_ID_1271_PG20: - wl1271_debug(DEBUG_BOOT, "chip id 0x%x (1271 PG20)", - wl->chip.id); - - ret = wl1271_setup(wl); - if (ret < 0) - goto out; - break; - default: - wl1271_error("unsupported chip id: 0x%x", wl->chip.id); - ret = -ENODEV; - goto out; - } - - if (wl->fw == NULL) { - ret = wl1271_fetch_firmware(wl); - if (ret < 0) - goto out; - } - - /* No NVS from netlink, try to get it from the filesystem */ - if (wl->nvs == NULL) { - ret = wl1271_fetch_nvs(wl); - if (ret < 0) - goto out; - } - -out: - return ret; -} - -static void wl1271_filter_work(struct work_struct *work) -{ - struct wl1271 *wl = - container_of(work, struct wl1271, filter_work); - int ret; - - mutex_lock(&wl->mutex); - - if (wl->state == WL1271_STATE_OFF) - goto out; - - ret = wl1271_ps_elp_wakeup(wl, false); - if (ret < 0) - goto out; - - /* FIXME: replace the magic numbers with proper definitions */ - ret = wl1271_cmd_join(wl, wl->bss_type, 1, 100, 0); - if (ret < 0) - goto out_sleep; - -out_sleep: - wl1271_ps_elp_sleep(wl); - -out: - mutex_unlock(&wl->mutex); -} - -int wl1271_plt_start(struct wl1271 *wl) -{ - int ret; - - mutex_lock(&wl->mutex); - - wl1271_notice("power up"); - - if (wl->state != WL1271_STATE_OFF) { - wl1271_error("cannot go into PLT state because not " - "in off state: %d", wl->state); - ret = -EBUSY; - goto out; - } - - wl->state = WL1271_STATE_PLT; - - ret = wl1271_chip_wakeup(wl); - if (ret < 0) - goto out; - - ret = wl1271_boot(wl); - if (ret < 0) - goto out; - - wl1271_notice("firmware booted in PLT mode (%s)", wl->chip.fw_ver); - - ret = wl1271_plt_init(wl); - if (ret < 0) - goto out; - -out: - mutex_unlock(&wl->mutex); - - return ret; -} - -int wl1271_plt_stop(struct wl1271 *wl) -{ - int ret = 0; - - mutex_lock(&wl->mutex); - - wl1271_notice("power down"); - - if (wl->state != WL1271_STATE_PLT) { - wl1271_error("cannot power down because not in PLT " - "state: %d", wl->state); - ret = -EBUSY; - goto out; - } - - wl1271_disable_interrupts(wl); - wl1271_power_off(wl); - - wl->state = WL1271_STATE_OFF; - -out: - mutex_unlock(&wl->mutex); - - return ret; -} - - -static int wl1271_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb) -{ - struct wl1271 *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! - */ - - schedule_work(&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) >= WL1271_TX_QUEUE_MAX_LENGTH) { - 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 wl1271_op_start(struct ieee80211_hw *hw) -{ - struct wl1271 *wl = hw->priv; - int ret = 0; - - wl1271_debug(DEBUG_MAC80211, "mac80211 start"); - - mutex_lock(&wl->mutex); - - if (wl->state != WL1271_STATE_OFF) { - wl1271_error("cannot start because not in off state: %d", - wl->state); - ret = -EBUSY; - goto out; - } - - ret = wl1271_chip_wakeup(wl); - if (ret < 0) - goto out; - - ret = wl1271_boot(wl); - if (ret < 0) - goto out; - - ret = wl1271_hw_init(wl); - if (ret < 0) - goto out; - - wl->state = WL1271_STATE_ON; - - wl1271_info("firmware booted (%s)", wl->chip.fw_ver); - -out: - if (ret < 0) - wl1271_power_off(wl); - - mutex_unlock(&wl->mutex); - - return ret; -} - -static void wl1271_op_stop(struct ieee80211_hw *hw) -{ - struct wl1271 *wl = hw->priv; - int i; - - wl1271_info("down"); - - wl1271_debug(DEBUG_MAC80211, "mac80211 stop"); - - mutex_lock(&wl->mutex); - - WARN_ON(wl->state != WL1271_STATE_ON); - - if (wl->scanning) { - mutex_unlock(&wl->mutex); - ieee80211_scan_completed(wl->hw, true); - mutex_lock(&wl->mutex); - wl->scanning = false; - } - - wl->state = WL1271_STATE_OFF; - - wl1271_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 */ - wl1271_tx_flush(wl); - wl1271_power_off(wl); - - memset(wl->bssid, 0, ETH_ALEN); - memset(wl->ssid, 0, IW_ESSID_MAX_SIZE + 1); - wl->ssid_len = 0; - wl->listen_int = 1; - wl->bss_type = MAX_BSS_TYPE; - - wl->rx_counter = 0; - wl->elp = false; - wl->psm = 0; - wl->tx_queue_stopped = false; - wl->power_level = WL1271_DEFAULT_POWER_LEVEL; - wl->tx_blocks_available = 0; - wl->tx_results_count = 0; - wl->tx_packets_count = 0; - wl->time_offset = 0; - wl->session_counter = 0; - for (i = 0; i < NUM_TX_QUEUES; i++) - wl->tx_blocks_freed[i] = 0; - - wl1271_debugfs_reset(wl); - mutex_unlock(&wl->mutex); -} - -static int wl1271_op_add_interface(struct ieee80211_hw *hw, - struct ieee80211_if_init_conf *conf) -{ - struct wl1271 *wl = hw->priv; - int ret = 0; - - wl1271_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM", - conf->type, conf->mac_addr); - - mutex_lock(&wl->mutex); - - switch (conf->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; - } - - /* FIXME: what if conf->mac_addr changes? */ - -out: - mutex_unlock(&wl->mutex); - return ret; -} - -static void wl1271_op_remove_interface(struct ieee80211_hw *hw, - struct ieee80211_if_init_conf *conf) -{ - wl1271_debug(DEBUG_MAC80211, "mac80211 remove interface"); -} - -#if 0 -static int wl1271_op_config_interface(struct ieee80211_hw *hw, - struct ieee80211_vif *vif, - struct ieee80211_if_conf *conf) -{ - struct wl1271 *wl = hw->priv; - struct sk_buff *beacon; - int ret; - - wl1271_debug(DEBUG_MAC80211, "mac80211 config_interface bssid %pM", - conf->bssid); - wl1271_dump_ascii(DEBUG_MAC80211, "ssid: ", conf->ssid, - conf->ssid_len); - - mutex_lock(&wl->mutex); - - ret = wl1271_ps_elp_wakeup(wl, false); - if (ret < 0) - goto out; - - memcpy(wl->bssid, conf->bssid, ETH_ALEN); - - ret = wl1271_cmd_build_null_data(wl); - if (ret < 0) - goto out_sleep; - - wl->ssid_len = conf->ssid_len; - if (wl->ssid_len) - memcpy(wl->ssid, conf->ssid, wl->ssid_len); - - if (wl->bss_type != BSS_TYPE_IBSS) { - /* FIXME: replace the magic numbers with proper definitions */ - ret = wl1271_cmd_join(wl, wl->bss_type, 5, 100, 1); - if (ret < 0) - goto out_sleep; - } - - if (conf->changed & IEEE80211_IFCC_BEACON) { - beacon = ieee80211_beacon_get(hw, vif); - ret = wl1271_cmd_template_set(wl, CMD_TEMPL_BEACON, - beacon->data, beacon->len); - - if (ret < 0) { - dev_kfree_skb(beacon); - goto out_sleep; - } - - ret = wl1271_cmd_template_set(wl, CMD_TEMPL_PROBE_RESPONSE, - beacon->data, beacon->len); - - dev_kfree_skb(beacon); - - if (ret < 0) - goto out_sleep; - - /* FIXME: replace the magic numbers with proper definitions */ - ret = wl1271_cmd_join(wl, wl->bss_type, 1, 100, 0); - - if (ret < 0) - goto out_sleep; - } - -out_sleep: - wl1271_ps_elp_sleep(wl); - -out: - mutex_unlock(&wl->mutex); - - return ret; -} -#endif - -static int wl1271_op_config(struct ieee80211_hw *hw, u32 changed) -{ - struct wl1271 *wl = hw->priv; - struct ieee80211_conf *conf = &hw->conf; - int channel, ret = 0; - - channel = ieee80211_frequency_to_channel(conf->channel->center_freq); - - wl1271_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 = wl1271_ps_elp_wakeup(wl, false); - if (ret < 0) - goto out; - - if (channel != wl->channel) { - u8 old_channel = wl->channel; - wl->channel = channel; - - /* FIXME: use beacon interval provided by mac80211 */ - ret = wl1271_cmd_join(wl, wl->bss_type, 1, 100, 0); - if (ret < 0) { - wl->channel = old_channel; - goto out_sleep; - } - } - - ret = wl1271_cmd_build_null_data(wl); - if (ret < 0) - goto out_sleep; - - if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) { - wl1271_info("psm enabled"); - - wl->psm_requested = true; - - /* - * We enter PSM only if we're already associated. - * If we're not, we'll enter it when joining an SSID, - * through the bss_info_changed() hook. - */ - ret = wl1271_ps_set_mode(wl, STATION_POWER_SAVE_MODE); - } else if (!(conf->flags & IEEE80211_CONF_PS) && - wl->psm_requested) { - wl1271_info("psm disabled"); - - wl->psm_requested = false; - - if (wl->psm) - ret = wl1271_ps_set_mode(wl, STATION_ACTIVE_MODE); - } - - if (conf->power_level != wl->power_level) { - ret = wl1271_acx_tx_power(wl, conf->power_level); - if (ret < 0) - goto out; - - wl->power_level = conf->power_level; - } - -out_sleep: - wl1271_ps_elp_sleep(wl); - -out: - mutex_unlock(&wl->mutex); - - return ret; -} - -#define WL1271_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \ - FIF_ALLMULTI | \ - FIF_FCSFAIL | \ - FIF_BCN_PRBRESP_PROMISC | \ - FIF_CONTROL | \ - FIF_OTHER_BSS) - -static void wl1271_op_configure_filter(struct ieee80211_hw *hw, - unsigned int changed, - unsigned int *total,u64 multicast) -{ - struct wl1271 *wl = hw->priv; - - wl1271_debug(DEBUG_MAC80211, "mac80211 configure filter"); - - *total &= WL1271_SUPPORTED_FILTERS; - changed &= WL1271_SUPPORTED_FILTERS; - - if (changed == 0) - return; - - /* FIXME: wl->rx_config and wl->rx_filter are not protected */ - wl->rx_config = WL1271_DEFAULT_RX_CONFIG; - wl->rx_filter = WL1271_DEFAULT_RX_FILTER; - - /* - * 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); */ -} - -static int wl1271_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_conf) -{ - struct wl1271 *wl = hw->priv; - const u8 *addr; - int ret; - u8 key_type; - - static const u8 bcast_addr[ETH_ALEN] = - { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; - - wl1271_debug(DEBUG_MAC80211, "mac80211 set key"); - - addr = sta ? sta->addr : bcast_addr; - - wl1271_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd); - wl1271_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN); - wl1271_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x", - key_conf->alg, key_conf->keyidx, - key_conf->keylen, key_conf->flags); - wl1271_dump(DEBUG_CRYPT, "KEY: ", key_conf->key, key_conf->keylen); - - if (is_zero_ether_addr(addr)) { - /* We dont support TX only encryption */ - ret = -EOPNOTSUPP; - goto out; - } - - mutex_lock(&wl->mutex); - - ret = wl1271_ps_elp_wakeup(wl, false); - if (ret < 0) - goto out_unlock; - - switch (key_conf->alg) { - case ALG_WEP: - key_type = KEY_WEP; - - key_conf->hw_key_idx = key_conf->keyidx; - break; - case ALG_TKIP: - key_type = KEY_TKIP; - - key_conf->hw_key_idx = key_conf->keyidx; - break; - case ALG_CCMP: - key_type = KEY_AES; - - key_conf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; - break; - default: - wl1271_error("Unknown key algo 0x%x", key_conf->alg); - - ret = -EOPNOTSUPP; - goto out_sleep; - } - - switch (cmd) { - case SET_KEY: - ret = wl1271_cmd_set_key(wl, KEY_ADD_OR_REPLACE, - key_conf->keyidx, key_type, - key_conf->keylen, key_conf->key, - addr); - if (ret < 0) { - wl1271_error("Could not add or replace key"); - goto out_sleep; - } - break; - - case DISABLE_KEY: - ret = wl1271_cmd_set_key(wl, KEY_REMOVE, - key_conf->keyidx, key_type, - key_conf->keylen, key_conf->key, - addr); - if (ret < 0) { - wl1271_error("Could not remove key"); - goto out_sleep; - } - break; - - default: - wl1271_error("Unsupported key cmd 0x%x", cmd); - ret = -EOPNOTSUPP; - goto out_sleep; - - break; - } - -out_sleep: - wl1271_ps_elp_sleep(wl); - -out_unlock: - mutex_unlock(&wl->mutex); - -out: - return ret; -} - -static int wl1271_op_hw_scan(struct ieee80211_hw *hw, - struct cfg80211_scan_request *req) -{ - struct wl1271 *wl = hw->priv; - int ret; - u8 *ssid = NULL; - size_t ssid_len = 0; - - wl1271_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); - - ret = wl1271_ps_elp_wakeup(wl, false); - if (ret < 0) - goto out; - - ret = wl1271_cmd_scan(hw->priv, ssid, ssid_len, 1, 0, 13, 3); - - wl1271_ps_elp_sleep(wl); - -out: - mutex_unlock(&wl->mutex); - - return ret; -} - -static int wl1271_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value) -{ - struct wl1271 *wl = hw->priv; - int ret; - - mutex_lock(&wl->mutex); - - ret = wl1271_ps_elp_wakeup(wl, false); - if (ret < 0) - goto out; - - ret = wl1271_acx_rts_threshold(wl, (u16) value); - if (ret < 0) - wl1271_warning("wl1271_op_set_rts_threshold failed: %d", ret); - - wl1271_ps_elp_sleep(wl); - -out: - mutex_unlock(&wl->mutex); - - return ret; -} - -static void wl1271_op_bss_info_changed(struct ieee80211_hw *hw, - struct ieee80211_vif *vif, - struct ieee80211_bss_conf *bss_conf, - u32 changed) -{ - enum wl1271_cmd_ps_mode mode; - struct wl1271 *wl = hw->priv; - int ret; - - wl1271_debug(DEBUG_MAC80211, "mac80211 bss info changed"); - - mutex_lock(&wl->mutex); - - ret = wl1271_ps_elp_wakeup(wl, false); - if (ret < 0) - goto out; - - if (changed & BSS_CHANGED_ASSOC) { - if (bss_conf->assoc) { - wl->aid = bss_conf->aid; - - ret = wl1271_cmd_build_ps_poll(wl, wl->aid); - if (ret < 0) - goto out_sleep; - - ret = wl1271_acx_aid(wl, wl->aid); - if (ret < 0) - goto out_sleep; - - /* If we want to go in PSM but we're not there yet */ - if (wl->psm_requested && !wl->psm) { - mode = STATION_POWER_SAVE_MODE; - ret = wl1271_ps_set_mode(wl, mode); - if (ret < 0) - goto out_sleep; - } - } - } - if (changed & BSS_CHANGED_ERP_SLOT) { - if (bss_conf->use_short_slot) - ret = wl1271_acx_slot(wl, SLOT_TIME_SHORT); - else - ret = wl1271_acx_slot(wl, SLOT_TIME_LONG); - if (ret < 0) { - wl1271_warning("Set slot time failed %d", ret); - goto out_sleep; - } - } - - if (changed & BSS_CHANGED_ERP_PREAMBLE) { - if (bss_conf->use_short_preamble) - wl1271_acx_set_preamble(wl, ACX_PREAMBLE_SHORT); - else - wl1271_acx_set_preamble(wl, ACX_PREAMBLE_LONG); - } - - if (changed & BSS_CHANGED_ERP_CTS_PROT) { - if (bss_conf->use_cts_prot) - ret = wl1271_acx_cts_protect(wl, CTSPROTECT_ENABLE); - else - ret = wl1271_acx_cts_protect(wl, CTSPROTECT_DISABLE); - if (ret < 0) { - wl1271_warning("Set ctsprotect failed %d", ret); - goto out_sleep; - } - } - -out_sleep: - wl1271_ps_elp_sleep(wl); - -out: - mutex_unlock(&wl->mutex); -} - - -/* can't be const, mac80211 writes to this */ -static struct ieee80211_rate wl1271_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 wl1271_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}, -}; - -/* can't be const, mac80211 writes to this */ -static struct ieee80211_supported_band wl1271_band_2ghz = { - .channels = wl1271_channels, - .n_channels = ARRAY_SIZE(wl1271_channels), - .bitrates = wl1271_rates, - .n_bitrates = ARRAY_SIZE(wl1271_rates), -}; - -static const struct ieee80211_ops wl1271_ops = { - .start = wl1271_op_start, - .stop = wl1271_op_stop, - .add_interface = wl1271_op_add_interface, - .remove_interface = wl1271_op_remove_interface, - .config = wl1271_op_config, -/* .config_interface = wl1271_op_config_interface, */ - .configure_filter = wl1271_op_configure_filter, - .tx = wl1271_op_tx, - .set_key = wl1271_op_set_key, - .hw_scan = wl1271_op_hw_scan, - .bss_info_changed = wl1271_op_bss_info_changed, - .set_rts_threshold = wl1271_op_set_rts_threshold, -}; - -static int wl1271_register_hw(struct wl1271 *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) { - wl1271_error("unable to register mac80211 hw: %d", ret); - return ret; - } - - wl->mac80211_registered = true; - - wl1271_notice("loaded"); - - return 0; -} - -static int wl1271_init_ieee80211(struct wl1271 *wl) -{ - /* - * The tx descriptor buffer and the TKIP space. - * - * FIXME: add correct 1271 descriptor size - */ - wl->hw->extra_tx_headroom = WL1271_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_NOISE_DBM; - - wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION); - wl->hw->wiphy->max_scan_ssids = 1; - wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1271_band_2ghz; - - SET_IEEE80211_DEV(wl->hw, &wl->spi->dev); - - return 0; -} - -static void wl1271_device_release(struct device *dev) -{ - -} - -static struct platform_device wl1271_device = { - .name = "wl1271", - .id = -1, - - /* device model insists to have a release function */ - .dev = { - .release = wl1271_device_release, - }, -}; - -#define WL1271_DEFAULT_CHANNEL 0 -static int __devinit wl1271_probe(struct spi_device *spi) -{ - struct wl12xx_platform_data *pdata; - struct ieee80211_hw *hw; - struct wl1271 *wl; - int ret, i; - static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf}; - - pdata = spi->dev.platform_data; - if (!pdata) { - wl1271_error("no platform data"); - return -ENODEV; - } - - hw = ieee80211_alloc_hw(sizeof(*wl), &wl1271_ops); - if (!hw) { - wl1271_error("could not alloc ieee80211_hw"); - return -ENOMEM; - } - - wl = hw->priv; - memset(wl, 0, sizeof(*wl)); - - wl->hw = hw; - dev_set_drvdata(&spi->dev, wl); - wl->spi = spi; - - skb_queue_head_init(&wl->tx_queue); - - INIT_WORK(&wl->filter_work, wl1271_filter_work); - wl->channel = WL1271_DEFAULT_CHANNEL; - wl->scanning = false; - wl->default_key = 0; - wl->listen_int = 1; - wl->rx_counter = 0; - wl->rx_config = WL1271_DEFAULT_RX_CONFIG; - wl->rx_filter = WL1271_DEFAULT_RX_FILTER; - wl->elp = false; - wl->psm = 0; - wl->psm_requested = false; - wl->tx_queue_stopped = false; - wl->power_level = WL1271_DEFAULT_POWER_LEVEL; - - /* We use the default power on sleep time until we know which chip - * we're using */ - for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++) - wl->tx_frames[i] = NULL; - - spin_lock_init(&wl->wl_lock); - - /* - * 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 = WL1271_STATE_OFF; - mutex_init(&wl->mutex); - - wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL); - if (!wl->rx_descriptor) { - wl1271_error("could not allocate memory for rx descriptor"); - ret = -ENOMEM; - goto out_free; - } - - /* This is the only SPI value that we need to set here, the rest - * comes from the board-peripherals file */ - spi->bits_per_word = 32; - - ret = spi_setup(spi); - if (ret < 0) { - wl1271_error("spi_setup failed"); - goto out_free; - } - - wl->set_power = pdata->set_power; - if (!wl->set_power) { - wl1271_error("set power function missing in platform data"); - ret = -ENODEV; - goto out_free; - } - - wl->irq = spi->irq; - if (wl->irq < 0) { - wl1271_error("irq missing in platform data"); - ret = -ENODEV; - goto out_free; - } - - ret = request_irq(wl->irq, wl1271_irq, 0, DRIVER_NAME, wl); - if (ret < 0) { - wl1271_error("request_irq() failed: %d", ret); - goto out_free; - } - - set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING); - - disable_irq(wl->irq); - - ret = platform_device_register(&wl1271_device); - if (ret) { - wl1271_error("couldn't register platform device"); - goto out_irq; - } - dev_set_drvdata(&wl1271_device.dev, wl); - - ret = wl1271_init_ieee80211(wl); - if (ret) - goto out_platform; - - ret = wl1271_register_hw(wl); - if (ret) - goto out_platform; - - wl1271_debugfs_init(wl); - - wl1271_notice("initialized"); - - return 0; - - out_platform: - platform_device_unregister(&wl1271_device); - - out_irq: - free_irq(wl->irq, wl); - - out_free: - kfree(wl->rx_descriptor); - wl->rx_descriptor = NULL; - - ieee80211_free_hw(hw); - - return ret; -} - -static int __devexit wl1271_remove(struct spi_device *spi) -{ - struct wl1271 *wl = dev_get_drvdata(&spi->dev); - - ieee80211_unregister_hw(wl->hw); - - wl1271_debugfs_exit(wl); - platform_device_unregister(&wl1271_device); - free_irq(wl->irq, wl); - kfree(wl->target_mem_map); - kfree(wl->fw); - wl->fw = NULL; - kfree(wl->nvs); - wl->nvs = NULL; - - kfree(wl->rx_descriptor); - wl->rx_descriptor = NULL; - - kfree(wl->fw_status); - kfree(wl->tx_res_if); - - ieee80211_free_hw(wl->hw); - - return 0; -} - - -static struct spi_driver wl1271_spi_driver = { - .driver = { - .name = "wl1271", - .bus = &spi_bus_type, - .owner = THIS_MODULE, - }, - - .probe = wl1271_probe, - .remove = __devexit_p(wl1271_remove), -}; - -static int __init wl1271_init(void) -{ - int ret; - - ret = spi_register_driver(&wl1271_spi_driver); - if (ret < 0) { - wl1271_error("failed to register spi driver: %d", ret); - goto out; - } - -out: - return ret; -} - -static void __exit wl1271_exit(void) -{ - spi_unregister_driver(&wl1271_spi_driver); - - wl1271_notice("unloaded"); -} - -module_init(wl1271_init); -module_exit(wl1271_exit); - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Luciano Coelho <luciano.coelho@nokia.com>"); |