netdev: bfin_mac: add support for IEEE 1588 PTP
[safe/jmp/linux-2.6] / drivers / net / wireless / wl12xx / wl1271_main.c
index 247f407..5bb9e3f 100644 (file)
@@ -30,6 +30,7 @@
 #include <linux/vmalloc.h>
 #include <linux/inetdevice.h>
 #include <linux/platform_device.h>
+#include <linux/slab.h>
 
 #include "wl1271.h"
 #include "wl12xx_80211.h"
@@ -219,7 +220,7 @@ static struct conf_drv_settings default_conf = {
        },
        .conn = {
                .wake_up_event               = CONF_WAKE_UP_EVENT_DTIM,
-               .listen_interval             = 0,
+               .listen_interval             = 1,
                .bcn_filt_mode               = CONF_BCN_FILT_MODE_ENABLED,
                .bcn_filt_ie_count           = 1,
                .bcn_filt_ie = {
@@ -234,39 +235,11 @@ static struct conf_drv_settings default_conf = {
                .broadcast_timeout           = 20000,
                .rx_broadcast_in_ps          = 1,
                .ps_poll_threshold           = 20,
-               .sig_trigger_count           = 2,
-               .sig_trigger = {
-                       [0] = {
-                               .threshold   = -75,
-                               .pacing      = 500,
-                               .metric      = CONF_TRIG_METRIC_RSSI_BEACON,
-                               .type        = CONF_TRIG_EVENT_TYPE_EDGE,
-                               .direction   = CONF_TRIG_EVENT_DIR_LOW,
-                               .hysteresis  = 2,
-                               .index       = 0,
-                               .enable      = 1
-                       },
-                       [1] = {
-                               .threshold   = -75,
-                               .pacing      = 500,
-                               .metric      = CONF_TRIG_METRIC_RSSI_BEACON,
-                               .type        = CONF_TRIG_EVENT_TYPE_EDGE,
-                               .direction   = CONF_TRIG_EVENT_DIR_HIGH,
-                               .hysteresis  = 2,
-                               .index       = 1,
-                               .enable      = 1
-                       }
-               },
-               .sig_weights = {
-                       .rssi_bcn_avg_weight = 10,
-                       .rssi_pkt_avg_weight = 10,
-                       .snr_bcn_avg_weight  = 10,
-                       .snr_pkt_avg_weight  = 10
-               },
                .bet_enable                  = CONF_BET_MODE_ENABLE,
                .bet_max_consecutive         = 10,
                .psm_entry_retries           = 3,
-               .keep_alive_interval         = 55000
+               .keep_alive_interval         = 55000,
+               .max_listen_interval         = 20,
        },
        .init = {
                .radioparam = {
@@ -280,6 +253,14 @@ static struct conf_drv_settings default_conf = {
        .pm_config = {
                .host_clk_settling_time = 5000,
                .host_fast_wakeup_support = false
+       },
+       .roam_trigger = {
+               /* FIXME: due to firmware bug, must use value 1 for now */
+               .trigger_pacing               = 1,
+               .avg_weight_rssi_beacon       = 20,
+               .avg_weight_rssi_data         = 10,
+               .avg_weight_snr_beacon        = 20,
+               .avg_weight_snr_data          = 10
        }
 };
 
@@ -1092,6 +1073,14 @@ static void wl1271_op_remove_interface(struct ieee80211_hw *hw,
                wl->tx_blocks_freed[i] = 0;
 
        wl1271_debugfs_reset(wl);
+
+       kfree(wl->fw_status);
+       wl->fw_status = NULL;
+       kfree(wl->tx_res_if);
+       wl->tx_res_if = NULL;
+       kfree(wl->target_mem_map);
+       wl->target_mem_map = NULL;
+
        mutex_unlock(&wl->mutex);
 }
 
@@ -1129,14 +1118,13 @@ static void wl1271_configure_filters(struct wl1271 *wl, unsigned int filters)
        }
 }
 
-static int wl1271_join_channel(struct wl1271 *wl, int channel)
+static int wl1271_dummy_join(struct wl1271 *wl)
 {
        int ret = 0;
        /* we need to use a dummy BSSID for now */
        static const u8 dummy_bssid[ETH_ALEN] = { 0x0b, 0xad, 0xde,
                                                  0xad, 0xbe, 0xef };
 
-       wl->channel = channel;
        memcpy(wl->bssid, dummy_bssid, ETH_ALEN);
 
        /* pass through frames from all BSS */
@@ -1152,7 +1140,62 @@ out:
        return ret;
 }
 
-static int wl1271_unjoin_channel(struct wl1271 *wl)
+static int wl1271_join(struct wl1271 *wl, bool set_assoc)
+{
+       int ret;
+
+       /*
+        * One of the side effects of the JOIN command is that is clears
+        * WPA/WPA2 keys from the chipset. Performing a JOIN while associated
+        * to a WPA/WPA2 access point will therefore kill the data-path.
+        * Currently there is no supported scenario for JOIN during
+        * association - if it becomes a supported scenario, the WPA/WPA2 keys
+        * must be handled somehow.
+        *
+        */
+       if (test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
+               wl1271_info("JOIN while associated.");
+
+       if (set_assoc)
+               set_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags);
+
+       ret = wl1271_cmd_join(wl, wl->set_bss_type);
+       if (ret < 0)
+               goto out;
+
+       set_bit(WL1271_FLAG_JOINED, &wl->flags);
+
+       if (!test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
+               goto out;
+
+       /*
+        * The join command disable the keep-alive mode, shut down its process,
+        * and also clear the template config, so we need to reset it all after
+        * the join. The acx_aid starts the keep-alive process, and the order
+        * of the commands below is relevant.
+        */
+       ret = wl1271_acx_keep_alive_mode(wl, true);
+       if (ret < 0)
+               goto out;
+
+       ret = wl1271_acx_aid(wl, wl->aid);
+       if (ret < 0)
+               goto out;
+
+       ret = wl1271_cmd_build_klv_null_data(wl);
+       if (ret < 0)
+               goto out;
+
+       ret = wl1271_acx_keep_alive_config(wl, CMD_TEMPL_KLV_IDX_NULL_DATA,
+                                          ACX_KEEP_ALIVE_TPL_VALID);
+       if (ret < 0)
+               goto out;
+
+out:
+       return ret;
+}
+
+static int wl1271_unjoin(struct wl1271 *wl)
 {
        int ret;
 
@@ -1162,7 +1205,6 @@ static int wl1271_unjoin_channel(struct wl1271 *wl)
                goto out;
 
        clear_bit(WL1271_FLAG_JOINED, &wl->flags);
-       wl->channel = 0;
        memset(wl->bssid, 0, ETH_ALEN);
 
        /* stop filterting packets based on bssid */
@@ -1214,12 +1256,17 @@ static int wl1271_op_config(struct ieee80211_hw *hw, u32 changed)
 
        mutex_lock(&wl->mutex);
 
+       if (unlikely(wl->state == WL1271_STATE_OFF))
+               goto out;
+
        ret = wl1271_ps_elp_wakeup(wl, false);
        if (ret < 0)
                goto out;
 
        /* if the channel changes while joined, join again */
-       if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
+       if (changed & IEEE80211_CONF_CHANGE_CHANNEL &&
+           ((wl->band != conf->channel->band) ||
+            (wl->channel != channel))) {
                wl->band = conf->channel->band;
                wl->channel = channel;
 
@@ -1239,7 +1286,7 @@ static int wl1271_op_config(struct ieee80211_hw *hw, u32 changed)
                                       "failed %d", ret);
 
                if (test_bit(WL1271_FLAG_JOINED, &wl->flags)) {
-                       ret = wl1271_cmd_join(wl, wl->set_bss_type);
+                       ret = wl1271_join(wl, false);
                        if (ret < 0)
                                wl1271_warning("cmd join to update channel "
                                               "failed %d", ret);
@@ -1249,9 +1296,9 @@ static int wl1271_op_config(struct ieee80211_hw *hw, u32 changed)
        if (changed & IEEE80211_CONF_CHANGE_IDLE) {
                if (conf->flags & IEEE80211_CONF_IDLE &&
                    test_bit(WL1271_FLAG_JOINED, &wl->flags))
-                       wl1271_unjoin_channel(wl);
+                       wl1271_unjoin(wl);
                else if (!(conf->flags & IEEE80211_CONF_IDLE))
-                       wl1271_join_channel(wl, channel);
+                       wl1271_dummy_join(wl);
 
                if (conf->flags & IEEE80211_CONF_IDLE) {
                        wl->rate_set = wl1271_min_rate_get(wl);
@@ -1260,7 +1307,9 @@ static int wl1271_op_config(struct ieee80211_hw *hw, u32 changed)
                        wl1271_acx_keep_alive_config(
                                wl, CMD_TEMPL_KLV_IDX_NULL_DATA,
                                ACX_KEEP_ALIVE_TPL_INVALID);
-               }
+                       set_bit(WL1271_FLAG_IDLE, &wl->flags);
+               } else
+                       clear_bit(WL1271_FLAG_IDLE, &wl->flags);
        }
 
        if (conf->flags & IEEE80211_CONF_PS &&
@@ -1311,11 +1360,15 @@ struct wl1271_filter_params {
        u8 mc_list[ACX_MC_ADDRESS_GROUP_MAX][ETH_ALEN];
 };
 
-static u64 wl1271_op_prepare_multicast(struct ieee80211_hw *hw, int mc_count,
-                                      struct dev_addr_list *mc_list)
+static u64 wl1271_op_prepare_multicast(struct ieee80211_hw *hw,
+                                      struct netdev_hw_addr_list *mc_list)
 {
        struct wl1271_filter_params *fp;
-       int i;
+       struct netdev_hw_addr *ha;
+       struct wl1271 *wl = hw->priv;
+
+       if (unlikely(wl->state == WL1271_STATE_OFF))
+               return 0;
 
        fp = kzalloc(sizeof(*fp), GFP_ATOMIC);
        if (!fp) {
@@ -1324,21 +1377,16 @@ static u64 wl1271_op_prepare_multicast(struct ieee80211_hw *hw, int mc_count,
        }
 
        /* update multicast filtering parameters */
-       fp->enabled = true;
-       if (mc_count > ACX_MC_ADDRESS_GROUP_MAX) {
-               mc_count = 0;
-               fp->enabled = false;
-       }
-
        fp->mc_list_length = 0;
-       for (i = 0; i < mc_count; i++) {
-               if (mc_list->da_addrlen == ETH_ALEN) {
+       if (netdev_hw_addr_list_count(mc_list) > ACX_MC_ADDRESS_GROUP_MAX) {
+               fp->enabled = false;
+       } else {
+               fp->enabled = true;
+               netdev_hw_addr_list_for_each(ha, mc_list) {
                        memcpy(fp->mc_list[fp->mc_list_length],
-                              mc_list->da_addr, ETH_ALEN);
+                                       ha->addr, ETH_ALEN);
                        fp->mc_list_length++;
-               } else
-                       wl1271_warning("Unknown mc address length.");
-               mc_list = mc_list->next;
+               }
        }
 
        return (u64)(unsigned long)fp;
@@ -1363,15 +1411,16 @@ static void wl1271_op_configure_filter(struct ieee80211_hw *hw,
 
        mutex_lock(&wl->mutex);
 
-       if (wl->state == WL1271_STATE_OFF)
+       *total &= WL1271_SUPPORTED_FILTERS;
+       changed &= WL1271_SUPPORTED_FILTERS;
+
+       if (unlikely(wl->state == WL1271_STATE_OFF))
                goto out;
 
        ret = wl1271_ps_elp_wakeup(wl, false);
        if (ret < 0)
                goto out;
 
-       *total &= WL1271_SUPPORTED_FILTERS;
-       changed &= WL1271_SUPPORTED_FILTERS;
 
        if (*total & FIF_ALLMULTI)
                ret = wl1271_acx_group_address_tbl(wl, false, NULL, 0);
@@ -1525,6 +1574,7 @@ out:
 }
 
 static int wl1271_op_hw_scan(struct ieee80211_hw *hw,
+                            struct ieee80211_vif *vif,
                             struct cfg80211_scan_request *req)
 {
        struct wl1271 *wl = hw->priv;
@@ -1565,10 +1615,13 @@ out:
 static int wl1271_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
 {
        struct wl1271 *wl = hw->priv;
-       int ret;
+       int ret = 0;
 
        mutex_lock(&wl->mutex);
 
+       if (unlikely(wl->state == WL1271_STATE_OFF))
+               goto out;
+
        ret = wl1271_ps_elp_wakeup(wl, false);
        if (ret < 0)
                goto out;
@@ -1610,7 +1663,7 @@ static void wl1271_op_bss_info_changed(struct ieee80211_hw *hw,
        enum wl1271_cmd_ps_mode mode;
        struct wl1271 *wl = hw->priv;
        bool do_join = false;
-       bool do_keepalive = false;
+       bool set_assoc = false;
        int ret;
 
        wl1271_debug(DEBUG_MAC80211, "mac80211 bss info changed");
@@ -1681,6 +1734,18 @@ static void wl1271_op_bss_info_changed(struct ieee80211_hw *hw,
                do_join = true;
        }
 
+       if (changed & BSS_CHANGED_CQM) {
+               bool enable = false;
+               if (bss_conf->cqm_rssi_thold)
+                       enable = true;
+               ret = wl1271_acx_rssi_snr_trigger(wl, enable,
+                                                 bss_conf->cqm_rssi_thold,
+                                                 bss_conf->cqm_rssi_hyst);
+               if (ret < 0)
+                       goto out;
+               wl->rssi_thold = bss_conf->cqm_rssi_thold;
+       }
+
        if ((changed & BSS_CHANGED_BSSID) &&
            /*
             * Now we know the correct bssid, so we send a new join command
@@ -1693,6 +1758,10 @@ static void wl1271_op_bss_info_changed(struct ieee80211_hw *hw,
                        if (ret < 0)
                                goto out_sleep;
 
+                       ret = wl1271_build_qos_null_data(wl);
+                       if (ret < 0)
+                               goto out_sleep;
+
                        /* filter out all packets not from this BSSID */
                        wl1271_configure_filters(wl, 0);
 
@@ -1704,7 +1773,7 @@ static void wl1271_op_bss_info_changed(struct ieee80211_hw *hw,
                if (bss_conf->assoc) {
                        u32 rates;
                        wl->aid = bss_conf->aid;
-                       set_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags);
+                       set_assoc = true;
 
                        /*
                         * use basic rates from AP, and determine lowest rate
@@ -1737,19 +1806,6 @@ static void wl1271_op_bss_info_changed(struct ieee80211_hw *hw,
                        ret = wl1271_cmd_build_probe_req(wl, NULL, 0,
                                                         NULL, 0, wl->band);
 
-                       /* Enable the keep-alive feature */
-                       ret = wl1271_acx_keep_alive_mode(wl, true);
-                       if (ret < 0)
-                               goto out_sleep;
-
-                       /*
-                        * This is awkward. The keep-alive configs must be done
-                        * *after* the join command, because otherwise it will
-                        * not work, but it must only be done *once* because
-                        * otherwise the firmware will start complaining.
-                        */
-                       do_keepalive = true;
-
                        /* enable the connection monitoring feature */
                        ret = wl1271_acx_conn_monit_params(wl, true);
                        if (ret < 0)
@@ -1817,35 +1873,11 @@ static void wl1271_op_bss_info_changed(struct ieee80211_hw *hw,
        }
 
        if (do_join) {
-               ret = wl1271_cmd_join(wl, wl->set_bss_type);
+               ret = wl1271_join(wl, set_assoc);
                if (ret < 0) {
                        wl1271_warning("cmd join failed %d", ret);
                        goto out_sleep;
                }
-               set_bit(WL1271_FLAG_JOINED, &wl->flags);
-       }
-
-       /*
-        * The JOIN operation shuts down the firmware keep-alive as a side
-        * effect, and the ACX_AID will start the keep-alive as a side effect.
-        * Hence, for non-IBSS, the ACX_AID must always happen *after* the
-        * JOIN operation, and the template config after the ACX_AID.
-        */
-       if (test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags)) {
-               ret = wl1271_acx_aid(wl, wl->aid);
-               if (ret < 0)
-                       goto out_sleep;
-       }
-
-       if (do_keepalive) {
-               ret = wl1271_cmd_build_klv_null_data(wl);
-               if (ret < 0)
-                       goto out_sleep;
-               ret = wl1271_acx_keep_alive_config(
-                       wl, CMD_TEMPL_KLV_IDX_NULL_DATA,
-                       ACX_KEEP_ALIVE_TPL_VALID);
-               if (ret < 0)
-                       goto out_sleep;
        }
 
 out_sleep:
@@ -2213,6 +2245,29 @@ static DEVICE_ATTR(bt_coex_state, S_IRUGO | S_IWUSR,
                   wl1271_sysfs_show_bt_coex_state,
                   wl1271_sysfs_store_bt_coex_state);
 
+static ssize_t wl1271_sysfs_show_hw_pg_ver(struct device *dev,
+                                          struct device_attribute *attr,
+                                          char *buf)
+{
+       struct wl1271 *wl = dev_get_drvdata(dev);
+       ssize_t len;
+
+       /* FIXME: what's the maximum length of buf? page size?*/
+       len = 500;
+
+       mutex_lock(&wl->mutex);
+       if (wl->hw_pg_ver >= 0)
+               len = snprintf(buf, len, "%d\n", wl->hw_pg_ver);
+       else
+               len = snprintf(buf, len, "n/a\n");
+       mutex_unlock(&wl->mutex);
+
+       return len;
+}
+
+static DEVICE_ATTR(hw_pg_ver, S_IRUGO | S_IWUSR,
+                  wl1271_sysfs_show_hw_pg_ver, NULL);
+
 int wl1271_register_hw(struct wl1271 *wl)
 {
        int ret;
@@ -2253,14 +2308,15 @@ int wl1271_init_ieee80211(struct wl1271 *wl)
        /* unit us */
        /* FIXME: find a proper value */
        wl->hw->channel_change_time = 10000;
+       wl->hw->max_listen_interval = wl->conf.conn.max_listen_interval;
 
        wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
-               IEEE80211_HW_NOISE_DBM |
                IEEE80211_HW_BEACON_FILTER |
                IEEE80211_HW_SUPPORTS_PS |
                IEEE80211_HW_SUPPORTS_UAPSD |
                IEEE80211_HW_HAS_RATE_CONTROL |
-               IEEE80211_HW_CONNECTION_MONITOR;
+               IEEE80211_HW_CONNECTION_MONITOR |
+               IEEE80211_HW_SUPPORTS_CQM_RSSI;
 
        wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
                BIT(NL80211_IFTYPE_ADHOC);
@@ -2331,6 +2387,7 @@ struct ieee80211_hw *wl1271_alloc_hw(void)
        wl->vif = NULL;
        wl->flags = 0;
        wl->sg_enabled = true;
+       wl->hw_pg_ver = -1;
 
        for (i = 0; i < ACX_TX_DESCRIPTORS; i++)
                wl->tx_frames[i] = NULL;
@@ -2360,8 +2417,18 @@ struct ieee80211_hw *wl1271_alloc_hw(void)
                goto err_platform;
        }
 
+       /* Create sysfs file to get HW PG version */
+       ret = device_create_file(&wl->plat_dev->dev, &dev_attr_hw_pg_ver);
+       if (ret < 0) {
+               wl1271_error("failed to create sysfs file hw_pg_ver");
+               goto err_bt_coex_state;
+       }
+
        return hw;
 
+err_bt_coex_state:
+       device_remove_file(&wl->plat_dev->dev, &dev_attr_bt_coex_state);
+
 err_platform:
        platform_device_unregister(wl->plat_dev);
 
@@ -2385,7 +2452,6 @@ int wl1271_free_hw(struct wl1271 *wl)
 
        wl1271_debugfs_exit(wl);
 
-       kfree(wl->target_mem_map);
        vfree(wl->fw);
        wl->fw = NULL;
        kfree(wl->nvs);