/* * This file is part of wl1271 * * Copyright (C) 2008-2009 Nokia Corporation * * Contact: Luciano Coelho * * 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 #include #include #include #include #include #include #include #include #include #include #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)) ieee80211_queue_work(wl->hw, &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; } ieee80211_queue_work(wl->hw, &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 = vmalloc(wl->fw_len); 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) { struct wl1271_partition_set partition; 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. */ memset(&partition, 0, sizeof(partition)); partition.reg.start = REGISTERS_BASE; partition.reg.size = REGISTERS_DOWN_SIZE; wl1271_set_partition(wl, &partition); /* 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; } struct wl1271_filter_params { unsigned int filters; unsigned int changed; int mc_list_length; u8 mc_list[ACX_MC_ADDRESS_GROUP_MAX][ETH_ALEN]; }; #define WL1271_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \ FIF_ALLMULTI | \ FIF_FCSFAIL | \ FIF_BCN_PRBRESP_PROMISC | \ FIF_CONTROL | \ FIF_OTHER_BSS) static void wl1271_filter_work(struct work_struct *work) { struct wl1271 *wl = container_of(work, struct wl1271, filter_work); struct wl1271_filter_params *fp; unsigned long flags; bool enabled = true; int ret; /* first, get the filter parameters */ spin_lock_irqsave(&wl->wl_lock, flags); fp = wl->filter_params; wl->filter_params = NULL; spin_unlock_irqrestore(&wl->wl_lock, flags); if (!fp) return; /* then, lock the mutex without risk of lock-up */ mutex_lock(&wl->mutex); if (wl->state == WL1271_STATE_OFF) goto out; ret = wl1271_ps_elp_wakeup(wl, false); if (ret < 0) goto out; /* configure the mc filter regardless of the changed flags */ if (fp->filters & FIF_ALLMULTI) enabled = false; ret = wl1271_acx_group_address_tbl(wl, enabled, fp->mc_list, fp->mc_list_length); if (ret < 0) goto out_sleep; /* determine, whether supported filter values have changed */ if (fp->changed == 0) goto out; /* apply configured filters */ ret = wl1271_cmd_join(wl); if (ret < 0) goto out_sleep; out_sleep: wl1271_ps_elp_sleep(wl); out: mutex_unlock(&wl->mutex); kfree(fp); } 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! */ 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) >= 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; unsigned long flags; int i; wl1271_info("down"); wl1271_debug(DEBUG_MAC80211, "mac80211 stop"); /* complete/cancel ongoing work */ cancel_work_sync(&wl->filter_work); spin_lock_irqsave(&wl->wl_lock, flags); kfree(wl->filter_params); wl->filter_params = NULL; spin_unlock_irqrestore(&wl->wl_lock, flags); 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->band = IEEE80211_BAND_2GHZ; 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->tx_security_last_seq = 0; wl->tx_security_seq_16 = 0; wl->tx_security_seq_32 = 0; wl->time_offset = 0; wl->session_counter = 0; wl->joined = false; 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); if (wl->vif) { ret = -EBUSY; goto out; } wl->vif = conf->vif; 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) { struct wl1271 *wl = hw->priv; mutex_lock(&wl->mutex); wl1271_debug(DEBUG_MAC80211, "mac80211 remove interface"); wl->vif = NULL; mutex_unlock(&wl->mutex); } #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) { ret = wl1271_cmd_join(wl); 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; ret = wl1271_cmd_join(wl); 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); wl->band = conf->channel->band; ret = wl1271_ps_elp_wakeup(wl, false); if (ret < 0) goto out; if (channel != wl->channel) { u8 old_channel = wl->channel; wl->channel = channel; ret = wl1271_cmd_join(wl); 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; } static u64 wl1271_op_prepare_multicast(struct ieee80211_hw *hw, int mc_count, struct dev_addr_list *mc_list) { struct wl1271 *wl = hw->priv; struct wl1271_filter_params *fp; unsigned long flags; int i; /* * FIXME: we should return a hash that will be passed to * configure_filter() instead of saving everything in the context. */ fp = kzalloc(sizeof(*fp), GFP_KERNEL); if (!fp) { wl1271_error("Out of memory setting filters."); return 0; } /* update multicast filtering parameters */ if (mc_count > ACX_MC_ADDRESS_GROUP_MAX) { mc_count = 0; fp->filters |= FIF_ALLMULTI; } fp->mc_list_length = 0; for (i = 0; i < mc_count; i++) { if (mc_list->da_addrlen == ETH_ALEN) { memcpy(fp->mc_list[fp->mc_list_length], mc_list->da_addr, ETH_ALEN); fp->mc_list_length++; } else wl1271_warning("Unknown mc address length."); } spin_lock_irqsave(&wl->wl_lock, flags); kfree(wl->filter_params); wl->filter_params = fp; spin_unlock_irqrestore(&wl->wl_lock, flags); return 1; } 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 (!multicast) return; /* * FIXME: for now we are still using a workqueue for filter * configuration, but with the new mac80211, this is not needed, * since configure_filter can now sleep. We now have * prepare_multicast, which needs to be atomic instead. */ /* store current filter config */ wl->filter_params->filters = *total; wl->filter_params->changed = changed; ieee80211_queue_work(wl->hw, &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; u32 tx_seq_32 = 0; u16 tx_seq_16 = 0; 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; tx_seq_32 = wl->tx_security_seq_32; tx_seq_16 = wl->tx_security_seq_16; break; case ALG_CCMP: key_type = KEY_AES; key_conf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; tx_seq_32 = wl->tx_security_seq_32; tx_seq_16 = wl->tx_security_seq_16; 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, tx_seq_32, tx_seq_16); 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, 0, 0); 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 u32 wl1271_enabled_rates_get(struct wl1271 *wl, u64 basic_rate_set) { struct ieee80211_supported_band *band; u32 enabled_rates = 0; int bit; band = wl->hw->wiphy->bands[wl->band]; for (bit = 0; bit < band->n_bitrates; bit++) { if (basic_rate_set & 0x1) enabled_rates |= band->bitrates[bit].hw_value; basic_rate_set >>= 1; } return enabled_rates; } 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->beacon_int = bss_conf->beacon_int; wl->dtim_period = bss_conf->dtim_period; wl->aid = bss_conf->aid; ret = wl1271_cmd_join(wl); if (ret < 0) { wl1271_warning("Association configuration " "failed %d", ret); goto out_sleep; } 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; } } else { /* use defaults when not associated */ wl->beacon_int = WL1271_DEFAULT_BEACON_INT; wl->dtim_period = WL1271_DEFAULT_DTIM_PERIOD; wl->basic_rate_set = WL1271_DEFAULT_BASIC_RATE_SET; wl->aid = 0; } } 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; } } if (changed & BSS_CHANGED_BASIC_RATES) { wl->basic_rate_set = wl1271_enabled_rates_get( wl, bss_conf->basic_rates); ret = wl1271_acx_rate_policies(wl, wl->basic_rate_set); if (ret < 0) { wl1271_warning("Set rate policies failed %d", ret); goto out_sleep; } ret = wl1271_cmd_join(wl); if (ret < 0) { wl1271_warning("Join with new basic rate " "set 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, */ .prepare_multicast = wl1271_op_prepare_multicast, .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. */ wl->hw->extra_tx_headroom = WL1271_TKIP_IV_SPACE + sizeof(struct wl1271_tx_hw_descr); /* unit us */ /* FIXME: find a proper value */ wl->hw->channel_change_time = 10000; wl->hw->flags = IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_NOISE_DBM | IEEE80211_HW_BEACON_FILTER; 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); INIT_DELAYED_WORK(&wl->elp_work, wl1271_elp_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; wl->beacon_int = WL1271_DEFAULT_BEACON_INT; wl->dtim_period = WL1271_DEFAULT_DTIM_PERIOD; wl->basic_rate_set = WL1271_DEFAULT_BASIC_RATE_SET; wl->band = IEEE80211_BAND_2GHZ; wl->vif = NULL; wl->joined = false; for (i = 0; i < ACX_TX_DESCRIPTORS; 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); vfree(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 "); MODULE_AUTHOR("Juuso Oikarinen ");