diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-3945.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-3945.c | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-3945.c b/drivers/net/wireless/iwlwifi/iwl-3945.c index 527525cc091..41f1d66cfeb 100644 --- a/drivers/net/wireless/iwlwifi/iwl-3945.c +++ b/drivers/net/wireless/iwlwifi/iwl-3945.c @@ -1964,6 +1964,194 @@ int iwl3945_hw_reg_set_txpower(struct iwl_priv *priv, s8 power) return 0; } +static int iwl3945_send_rxon_assoc(struct iwl_priv *priv) +{ + int rc = 0; + struct iwl_rx_packet *res = NULL; + struct iwl3945_rxon_assoc_cmd rxon_assoc; + struct iwl_host_cmd cmd = { + .id = REPLY_RXON_ASSOC, + .len = sizeof(rxon_assoc), + .meta.flags = CMD_WANT_SKB, + .data = &rxon_assoc, + }; + const struct iwl_rxon_cmd *rxon1 = &priv->staging_rxon; + const struct iwl_rxon_cmd *rxon2 = &priv->active_rxon; + + if ((rxon1->flags == rxon2->flags) && + (rxon1->filter_flags == rxon2->filter_flags) && + (rxon1->cck_basic_rates == rxon2->cck_basic_rates) && + (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) { + IWL_DEBUG_INFO(priv, "Using current RXON_ASSOC. Not resending.\n"); + return 0; + } + + rxon_assoc.flags = priv->staging_rxon.flags; + rxon_assoc.filter_flags = priv->staging_rxon.filter_flags; + rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates; + rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates; + rxon_assoc.reserved = 0; + + rc = iwl_send_cmd_sync(priv, &cmd); + if (rc) + return rc; + + res = (struct iwl_rx_packet *)cmd.meta.u.skb->data; + if (res->hdr.flags & IWL_CMD_FAILED_MSK) { + IWL_ERR(priv, "Bad return from REPLY_RXON_ASSOC command\n"); + rc = -EIO; + } + + priv->alloc_rxb_skb--; + dev_kfree_skb_any(cmd.meta.u.skb); + + return rc; +} + +/** + * iwl3945_commit_rxon - commit staging_rxon to hardware + * + * The RXON command in staging_rxon is committed to the hardware and + * the active_rxon structure is updated with the new data. This + * function correctly transitions out of the RXON_ASSOC_MSK state if + * a HW tune is required based on the RXON structure changes. + */ +static int iwl3945_commit_rxon(struct iwl_priv *priv) +{ + /* cast away the const for active_rxon in this function */ + struct iwl3945_rxon_cmd *active_rxon = (void *)&priv->active_rxon; + struct iwl3945_rxon_cmd *staging_rxon = (void *)&priv->staging_rxon; + int rc = 0; + bool new_assoc = + !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK); + + if (!iwl_is_alive(priv)) + return -1; + + /* always get timestamp with Rx frame */ + staging_rxon->flags |= RXON_FLG_TSF2HOST_MSK; + + /* select antenna */ + staging_rxon->flags &= + ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK); + staging_rxon->flags |= iwl3945_get_antenna_flags(priv); + + rc = iwl_check_rxon_cmd(priv); + if (rc) { + IWL_ERR(priv, "Invalid RXON configuration. Not committing.\n"); + return -EINVAL; + } + + /* If we don't need to send a full RXON, we can use + * iwl3945_rxon_assoc_cmd which is used to reconfigure filter + * and other flags for the current radio configuration. */ + if (!iwl_full_rxon_required(priv)) { + rc = iwl_send_rxon_assoc(priv); + if (rc) { + IWL_ERR(priv, "Error setting RXON_ASSOC " + "configuration (%d).\n", rc); + return rc; + } + + memcpy(active_rxon, staging_rxon, sizeof(*active_rxon)); + + return 0; + } + + /* If we are currently associated and the new config requires + * an RXON_ASSOC and the new config wants the associated mask enabled, + * we must clear the associated from the active configuration + * before we apply the new config */ + if (iwl_is_associated(priv) && new_assoc) { + IWL_DEBUG_INFO(priv, "Toggling associated bit on current RXON\n"); + active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK; + + /* + * reserved4 and 5 could have been filled by the iwlcore code. + * Let's clear them before pushing to the 3945. + */ + active_rxon->reserved4 = 0; + active_rxon->reserved5 = 0; + rc = iwl_send_cmd_pdu(priv, REPLY_RXON, + sizeof(struct iwl3945_rxon_cmd), + &priv->active_rxon); + + /* If the mask clearing failed then we set + * active_rxon back to what it was previously */ + if (rc) { + active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK; + IWL_ERR(priv, "Error clearing ASSOC_MSK on current " + "configuration (%d).\n", rc); + return rc; + } + } + + IWL_DEBUG_INFO(priv, "Sending RXON\n" + "* with%s RXON_FILTER_ASSOC_MSK\n" + "* channel = %d\n" + "* bssid = %pM\n", + (new_assoc ? "" : "out"), + le16_to_cpu(staging_rxon->channel), + staging_rxon->bssid_addr); + + /* + * reserved4 and 5 could have been filled by the iwlcore code. + * Let's clear them before pushing to the 3945. + */ + staging_rxon->reserved4 = 0; + staging_rxon->reserved5 = 0; + + iwl_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto); + + /* Apply the new configuration */ + rc = iwl_send_cmd_pdu(priv, REPLY_RXON, + sizeof(struct iwl3945_rxon_cmd), + staging_rxon); + if (rc) { + IWL_ERR(priv, "Error setting new configuration (%d).\n", rc); + return rc; + } + + memcpy(active_rxon, staging_rxon, sizeof(*active_rxon)); + + priv->cfg->ops->smgmt->clear_station_table(priv); + + /* If we issue a new RXON command which required a tune then we must + * send a new TXPOWER command or we won't be able to Tx any frames */ + rc = priv->cfg->ops->lib->send_tx_power(priv); + if (rc) { + IWL_ERR(priv, "Error setting Tx power (%d).\n", rc); + return rc; + } + + /* Add the broadcast address so we can send broadcast frames */ + if (priv->cfg->ops->smgmt->add_station(priv, iwl_bcast_addr, 0, 0, NULL) == + IWL_INVALID_STATION) { + IWL_ERR(priv, "Error adding BROADCAST address for transmit.\n"); + return -EIO; + } + + /* If we have set the ASSOC_MSK and we are in BSS mode then + * add the IWL_AP_ID to the station rate table */ + if (iwl_is_associated(priv) && + (priv->iw_mode == NL80211_IFTYPE_STATION)) + if (priv->cfg->ops->smgmt->add_station(priv, + priv->active_rxon.bssid_addr, 1, 0, NULL) + == IWL_INVALID_STATION) { + IWL_ERR(priv, "Error adding AP address for transmit\n"); + return -EIO; + } + + /* Init the hardware's rate fallback order based on the band */ + rc = iwl3945_init_hw_rate_table(priv); + if (rc) { + IWL_ERR(priv, "Error setting HW rate table: %02X\n", rc); + return -EIO; + } + + return 0; +} + /* will add 3945 channel switch cmd handling later */ int iwl3945_hw_channel_switch(struct iwl_priv *priv, u16 channel) { @@ -2729,6 +2917,11 @@ static int iwl3945_load_bsm(struct iwl_priv *priv) return 0; } +static struct iwl_hcmd_ops iwl3945_hcmd = { + .rxon_assoc = iwl3945_send_rxon_assoc, + .commit_rxon = iwl3945_commit_rxon, +}; + static struct iwl_lib_ops iwl3945_lib = { .txq_attach_buf_to_tfd = iwl3945_hw_txq_attach_buf_to_tfd, .txq_free_tfd = iwl3945_hw_txq_free_tfd, @@ -2758,6 +2951,17 @@ static struct iwl_lib_ops iwl3945_lib = { }, .send_tx_power = iwl3945_send_tx_power, .is_valid_rtc_data_addr = iwl3945_hw_valid_rtc_data_addr, + .post_associate = iwl3945_post_associate, + .config_ap = iwl3945_config_ap, +}; + +static struct iwl_station_mgmt_ops iwl3945_station_mgmt = { + .add_station = iwl3945_add_station, +#if 0 + .remove_station = iwl3945_remove_station, +#endif + .find_station = iwl3945_hw_find_station, + .clear_station_table = iwl3945_clear_stations_table, }; static struct iwl_hcmd_utils_ops iwl3945_hcmd_utils = { @@ -2767,7 +2971,9 @@ static struct iwl_hcmd_utils_ops iwl3945_hcmd_utils = { static struct iwl_ops iwl3945_ops = { .lib = &iwl3945_lib, + .hcmd = &iwl3945_hcmd, .utils = &iwl3945_hcmd_utils, + .smgmt = &iwl3945_station_mgmt, }; static struct iwl_cfg iwl3945_bg_cfg = { |