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17f841cd6c
With the recent host command routines merge, we can now look at the various host command helpers and get rid of the duplicated ones. Signed-off-by: Samuel Ortiz <samuel.ortiz@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
4230 lines
115 KiB
C
4230 lines
115 KiB
C
/******************************************************************************
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*
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* Copyright(c) 2003 - 2009 Intel Corporation. All rights reserved.
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*
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* Portions of this file are derived from the ipw3945 project, as well
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* as portions of the ieee80211 subsystem header files.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
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*
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* The full GNU General Public License is included in this distribution in the
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* file called LICENSE.
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*
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* Contact Information:
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* Intel Linux Wireless <ilw@linux.intel.com>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*
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*****************************************************************************/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/pci.h>
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#include <linux/dma-mapping.h>
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#include <linux/delay.h>
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#include <linux/skbuff.h>
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#include <linux/netdevice.h>
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#include <linux/wireless.h>
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#include <linux/firmware.h>
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#include <linux/etherdevice.h>
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#include <linux/if_arp.h>
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#include <net/mac80211.h>
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#include <asm/div64.h>
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#define DRV_NAME "iwlagn"
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#include "iwl-eeprom.h"
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#include "iwl-dev.h"
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#include "iwl-core.h"
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#include "iwl-io.h"
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#include "iwl-helpers.h"
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#include "iwl-sta.h"
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#include "iwl-calib.h"
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/******************************************************************************
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*
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* module boiler plate
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*
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******************************************************************************/
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/*
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* module name, copyright, version, etc.
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*/
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#define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
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#ifdef CONFIG_IWLWIFI_DEBUG
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#define VD "d"
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#else
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#define VD
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#endif
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#ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
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#define VS "s"
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#else
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#define VS
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#endif
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#define DRV_VERSION IWLWIFI_VERSION VD VS
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MODULE_DESCRIPTION(DRV_DESCRIPTION);
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MODULE_VERSION(DRV_VERSION);
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MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("iwl4965");
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/*************** STATION TABLE MANAGEMENT ****
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* mac80211 should be examined to determine if sta_info is duplicating
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* the functionality provided here
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*/
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/**************************************************************/
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static void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
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{
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struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
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if (hw_decrypt)
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rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
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else
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rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
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}
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/**
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* iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
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* @priv: staging_rxon is compared to active_rxon
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*
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* If the RXON structure is changing enough to require a new tune,
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* or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
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* a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
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*/
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static int iwl_full_rxon_required(struct iwl_priv *priv)
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{
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/* These items are only settable from the full RXON command */
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if (!(iwl_is_associated(priv)) ||
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compare_ether_addr(priv->staging_rxon.bssid_addr,
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priv->active_rxon.bssid_addr) ||
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compare_ether_addr(priv->staging_rxon.node_addr,
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priv->active_rxon.node_addr) ||
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compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
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priv->active_rxon.wlap_bssid_addr) ||
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(priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
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(priv->staging_rxon.channel != priv->active_rxon.channel) ||
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(priv->staging_rxon.air_propagation !=
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priv->active_rxon.air_propagation) ||
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(priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
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priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
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(priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
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priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
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(priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
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return 1;
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/* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
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* be updated with the RXON_ASSOC command -- however only some
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* flag transitions are allowed using RXON_ASSOC */
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/* Check if we are not switching bands */
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if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
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(priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
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return 1;
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/* Check if we are switching association toggle */
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if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
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(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
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return 1;
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return 0;
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}
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/**
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* iwl_commit_rxon - commit staging_rxon to hardware
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*
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* The RXON command in staging_rxon is committed to the hardware and
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* the active_rxon structure is updated with the new data. This
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* function correctly transitions out of the RXON_ASSOC_MSK state if
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* a HW tune is required based on the RXON structure changes.
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*/
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static int iwl_commit_rxon(struct iwl_priv *priv)
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{
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/* cast away the const for active_rxon in this function */
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struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
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int ret;
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bool new_assoc =
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!!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
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if (!iwl_is_alive(priv))
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return -EBUSY;
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/* always get timestamp with Rx frame */
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priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
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/* allow CTS-to-self if possible. this is relevant only for
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* 5000, but will not damage 4965 */
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priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
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ret = iwl_agn_check_rxon_cmd(priv);
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if (ret) {
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IWL_ERR(priv, "Invalid RXON configuration. Not committing.\n");
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return -EINVAL;
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}
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/* If we don't need to send a full RXON, we can use
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* iwl_rxon_assoc_cmd which is used to reconfigure filter
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* and other flags for the current radio configuration. */
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if (!iwl_full_rxon_required(priv)) {
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ret = iwl_send_rxon_assoc(priv);
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if (ret) {
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IWL_ERR(priv, "Error setting RXON_ASSOC (%d)\n", ret);
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return ret;
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}
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memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
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return 0;
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}
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/* station table will be cleared */
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priv->assoc_station_added = 0;
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/* If we are currently associated and the new config requires
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* an RXON_ASSOC and the new config wants the associated mask enabled,
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* we must clear the associated from the active configuration
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* before we apply the new config */
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if (iwl_is_associated(priv) && new_assoc) {
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IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
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active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
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ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
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sizeof(struct iwl_rxon_cmd),
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&priv->active_rxon);
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/* If the mask clearing failed then we set
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* active_rxon back to what it was previously */
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if (ret) {
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active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
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IWL_ERR(priv, "Error clearing ASSOC_MSK (%d)\n", ret);
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return ret;
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}
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}
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IWL_DEBUG_INFO("Sending RXON\n"
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"* with%s RXON_FILTER_ASSOC_MSK\n"
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"* channel = %d\n"
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"* bssid = %pM\n",
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(new_assoc ? "" : "out"),
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le16_to_cpu(priv->staging_rxon.channel),
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priv->staging_rxon.bssid_addr);
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iwl_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
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/* Apply the new configuration
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* RXON unassoc clears the station table in uCode, send it before
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* we add the bcast station. If assoc bit is set, we will send RXON
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* after having added the bcast and bssid station.
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*/
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if (!new_assoc) {
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ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
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sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
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if (ret) {
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IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
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return ret;
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}
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memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
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}
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iwl_clear_stations_table(priv);
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if (!priv->error_recovering)
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priv->start_calib = 0;
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/* Add the broadcast address so we can send broadcast frames */
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if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
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IWL_INVALID_STATION) {
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IWL_ERR(priv, "Error adding BROADCAST address for transmit.\n");
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return -EIO;
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}
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/* If we have set the ASSOC_MSK and we are in BSS mode then
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* add the IWL_AP_ID to the station rate table */
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if (new_assoc) {
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if (priv->iw_mode == NL80211_IFTYPE_STATION) {
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ret = iwl_rxon_add_station(priv,
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priv->active_rxon.bssid_addr, 1);
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if (ret == IWL_INVALID_STATION) {
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IWL_ERR(priv,
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"Error adding AP address for TX.\n");
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return -EIO;
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}
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priv->assoc_station_added = 1;
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if (priv->default_wep_key &&
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iwl_send_static_wepkey_cmd(priv, 0))
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IWL_ERR(priv,
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"Could not send WEP static key.\n");
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}
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/* Apply the new configuration
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* RXON assoc doesn't clear the station table in uCode,
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*/
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ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
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sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
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if (ret) {
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IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
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return ret;
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}
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memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
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}
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iwl_init_sensitivity(priv);
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/* If we issue a new RXON command which required a tune then we must
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* send a new TXPOWER command or we won't be able to Tx any frames */
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ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
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if (ret) {
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IWL_ERR(priv, "Error sending TX power (%d)\n", ret);
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return ret;
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}
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return 0;
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}
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void iwl_update_chain_flags(struct iwl_priv *priv)
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{
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iwl_set_rxon_chain(priv);
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iwl_commit_rxon(priv);
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}
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static void iwl_clear_free_frames(struct iwl_priv *priv)
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{
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struct list_head *element;
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IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
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priv->frames_count);
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while (!list_empty(&priv->free_frames)) {
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element = priv->free_frames.next;
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list_del(element);
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kfree(list_entry(element, struct iwl_frame, list));
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priv->frames_count--;
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}
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if (priv->frames_count) {
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IWL_WARN(priv, "%d frames still in use. Did we lose one?\n",
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priv->frames_count);
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priv->frames_count = 0;
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}
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}
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static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
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{
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struct iwl_frame *frame;
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struct list_head *element;
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if (list_empty(&priv->free_frames)) {
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frame = kzalloc(sizeof(*frame), GFP_KERNEL);
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if (!frame) {
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IWL_ERR(priv, "Could not allocate frame!\n");
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return NULL;
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}
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priv->frames_count++;
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return frame;
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}
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element = priv->free_frames.next;
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list_del(element);
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return list_entry(element, struct iwl_frame, list);
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}
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static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
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{
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memset(frame, 0, sizeof(*frame));
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list_add(&frame->list, &priv->free_frames);
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}
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static unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
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struct ieee80211_hdr *hdr,
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int left)
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{
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if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
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((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
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(priv->iw_mode != NL80211_IFTYPE_AP)))
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return 0;
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if (priv->ibss_beacon->len > left)
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return 0;
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memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
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return priv->ibss_beacon->len;
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}
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static u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv)
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{
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int i;
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int rate_mask;
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/* Set rate mask*/
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if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
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rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
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else
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rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
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/* Find lowest valid rate */
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for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
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i = iwl_rates[i].next_ieee) {
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if (rate_mask & (1 << i))
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return iwl_rates[i].plcp;
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}
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/* No valid rate was found. Assign the lowest one */
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if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
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return IWL_RATE_1M_PLCP;
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else
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return IWL_RATE_6M_PLCP;
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}
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static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv *priv,
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struct iwl_frame *frame, u8 rate)
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{
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struct iwl_tx_beacon_cmd *tx_beacon_cmd;
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unsigned int frame_size;
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tx_beacon_cmd = &frame->u.beacon;
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memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
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tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
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tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
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frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
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sizeof(frame->u) - sizeof(*tx_beacon_cmd));
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BUG_ON(frame_size > MAX_MPDU_SIZE);
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tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
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if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
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tx_beacon_cmd->tx.rate_n_flags =
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iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
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else
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tx_beacon_cmd->tx.rate_n_flags =
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iwl_hw_set_rate_n_flags(rate, 0);
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tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
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TX_CMD_FLG_TSF_MSK |
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TX_CMD_FLG_STA_RATE_MSK;
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return sizeof(*tx_beacon_cmd) + frame_size;
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}
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static int iwl_send_beacon_cmd(struct iwl_priv *priv)
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{
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struct iwl_frame *frame;
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unsigned int frame_size;
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int rc;
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u8 rate;
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frame = iwl_get_free_frame(priv);
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if (!frame) {
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IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
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"command.\n");
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return -ENOMEM;
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}
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rate = iwl_rate_get_lowest_plcp(priv);
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frame_size = iwl_hw_get_beacon_cmd(priv, frame, rate);
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rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
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&frame->u.cmd[0]);
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iwl_free_frame(priv, frame);
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return rc;
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}
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static inline dma_addr_t iwl_tfd_tb_get_addr(struct iwl_tfd *tfd, u8 idx)
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{
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struct iwl_tfd_tb *tb = &tfd->tbs[idx];
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dma_addr_t addr = get_unaligned_le32(&tb->lo);
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if (sizeof(dma_addr_t) > sizeof(u32))
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addr |=
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((dma_addr_t)(le16_to_cpu(tb->hi_n_len) & 0xF) << 16) << 16;
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return addr;
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}
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static inline u16 iwl_tfd_tb_get_len(struct iwl_tfd *tfd, u8 idx)
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{
|
|
struct iwl_tfd_tb *tb = &tfd->tbs[idx];
|
|
|
|
return le16_to_cpu(tb->hi_n_len) >> 4;
|
|
}
|
|
|
|
static inline void iwl_tfd_set_tb(struct iwl_tfd *tfd, u8 idx,
|
|
dma_addr_t addr, u16 len)
|
|
{
|
|
struct iwl_tfd_tb *tb = &tfd->tbs[idx];
|
|
u16 hi_n_len = len << 4;
|
|
|
|
put_unaligned_le32(addr, &tb->lo);
|
|
if (sizeof(dma_addr_t) > sizeof(u32))
|
|
hi_n_len |= ((addr >> 16) >> 16) & 0xF;
|
|
|
|
tb->hi_n_len = cpu_to_le16(hi_n_len);
|
|
|
|
tfd->num_tbs = idx + 1;
|
|
}
|
|
|
|
static inline u8 iwl_tfd_get_num_tbs(struct iwl_tfd *tfd)
|
|
{
|
|
return tfd->num_tbs & 0x1f;
|
|
}
|
|
|
|
/**
|
|
* iwl_hw_txq_free_tfd - Free all chunks referenced by TFD [txq->q.read_ptr]
|
|
* @priv - driver private data
|
|
* @txq - tx queue
|
|
*
|
|
* Does NOT advance any TFD circular buffer read/write indexes
|
|
* Does NOT free the TFD itself (which is within circular buffer)
|
|
*/
|
|
void iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
|
|
{
|
|
struct iwl_tfd *tfd_tmp = (struct iwl_tfd *)txq->tfds;
|
|
struct iwl_tfd *tfd;
|
|
struct pci_dev *dev = priv->pci_dev;
|
|
int index = txq->q.read_ptr;
|
|
int i;
|
|
int num_tbs;
|
|
|
|
tfd = &tfd_tmp[index];
|
|
|
|
/* Sanity check on number of chunks */
|
|
num_tbs = iwl_tfd_get_num_tbs(tfd);
|
|
|
|
if (num_tbs >= IWL_NUM_OF_TBS) {
|
|
IWL_ERR(priv, "Too many chunks: %i\n", num_tbs);
|
|
/* @todo issue fatal error, it is quite serious situation */
|
|
return;
|
|
}
|
|
|
|
/* Unmap tx_cmd */
|
|
if (num_tbs)
|
|
pci_unmap_single(dev,
|
|
pci_unmap_addr(&txq->cmd[index]->meta, mapping),
|
|
pci_unmap_len(&txq->cmd[index]->meta, len),
|
|
PCI_DMA_TODEVICE);
|
|
|
|
/* Unmap chunks, if any. */
|
|
for (i = 1; i < num_tbs; i++) {
|
|
pci_unmap_single(dev, iwl_tfd_tb_get_addr(tfd, i),
|
|
iwl_tfd_tb_get_len(tfd, i), PCI_DMA_TODEVICE);
|
|
|
|
if (txq->txb) {
|
|
dev_kfree_skb(txq->txb[txq->q.read_ptr].skb[i - 1]);
|
|
txq->txb[txq->q.read_ptr].skb[i - 1] = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
|
|
struct iwl_tx_queue *txq,
|
|
dma_addr_t addr, u16 len,
|
|
u8 reset, u8 pad)
|
|
{
|
|
struct iwl_queue *q;
|
|
struct iwl_tfd *tfd, *tfd_tmp;
|
|
u32 num_tbs;
|
|
|
|
q = &txq->q;
|
|
tfd_tmp = (struct iwl_tfd *)txq->tfds;
|
|
tfd = &tfd_tmp[q->write_ptr];
|
|
|
|
if (reset)
|
|
memset(tfd, 0, sizeof(*tfd));
|
|
|
|
num_tbs = iwl_tfd_get_num_tbs(tfd);
|
|
|
|
/* Each TFD can point to a maximum 20 Tx buffers */
|
|
if (num_tbs >= IWL_NUM_OF_TBS) {
|
|
IWL_ERR(priv, "Error can not send more than %d chunks\n",
|
|
IWL_NUM_OF_TBS);
|
|
return -EINVAL;
|
|
}
|
|
|
|
BUG_ON(addr & ~DMA_BIT_MASK(36));
|
|
if (unlikely(addr & ~IWL_TX_DMA_MASK))
|
|
IWL_ERR(priv, "Unaligned address = %llx\n",
|
|
(unsigned long long)addr);
|
|
|
|
iwl_tfd_set_tb(tfd, num_tbs, addr, len);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Tell nic where to find circular buffer of Tx Frame Descriptors for
|
|
* given Tx queue, and enable the DMA channel used for that queue.
|
|
*
|
|
* 4965 supports up to 16 Tx queues in DRAM, mapped to up to 8 Tx DMA
|
|
* channels supported in hardware.
|
|
*/
|
|
int iwl_hw_tx_queue_init(struct iwl_priv *priv,
|
|
struct iwl_tx_queue *txq)
|
|
{
|
|
int ret;
|
|
unsigned long flags;
|
|
int txq_id = txq->q.id;
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
ret = iwl_grab_nic_access(priv);
|
|
if (ret) {
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
return ret;
|
|
}
|
|
|
|
/* Circular buffer (TFD queue in DRAM) physical base address */
|
|
iwl_write_direct32(priv, FH_MEM_CBBC_QUEUE(txq_id),
|
|
txq->q.dma_addr >> 8);
|
|
|
|
iwl_release_nic_access(priv);
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/******************************************************************************
|
|
*
|
|
* Misc. internal state and helper functions
|
|
*
|
|
******************************************************************************/
|
|
|
|
static void iwl_ht_conf(struct iwl_priv *priv,
|
|
struct ieee80211_bss_conf *bss_conf)
|
|
{
|
|
struct ieee80211_sta_ht_cap *ht_conf;
|
|
struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
|
|
struct ieee80211_sta *sta;
|
|
|
|
IWL_DEBUG_MAC80211("enter: \n");
|
|
|
|
if (!iwl_conf->is_ht)
|
|
return;
|
|
|
|
|
|
/*
|
|
* It is totally wrong to base global information on something
|
|
* that is valid only when associated, alas, this driver works
|
|
* that way and I don't know how to fix it.
|
|
*/
|
|
|
|
rcu_read_lock();
|
|
sta = ieee80211_find_sta(priv->hw, priv->bssid);
|
|
if (!sta) {
|
|
rcu_read_unlock();
|
|
return;
|
|
}
|
|
ht_conf = &sta->ht_cap;
|
|
|
|
if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
|
|
iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
|
|
if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
|
|
iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
|
|
|
|
iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
|
|
iwl_conf->max_amsdu_size =
|
|
!!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
|
|
|
|
iwl_conf->supported_chan_width =
|
|
!!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40);
|
|
|
|
/*
|
|
* XXX: The HT configuration needs to be moved into iwl_mac_config()
|
|
* to be done there correctly.
|
|
*/
|
|
|
|
iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
|
|
if (conf_is_ht40_minus(&priv->hw->conf))
|
|
iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
|
|
else if (conf_is_ht40_plus(&priv->hw->conf))
|
|
iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
|
|
|
|
/* If no above or below channel supplied disable FAT channel */
|
|
if (iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_ABOVE &&
|
|
iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_BELOW)
|
|
iwl_conf->supported_chan_width = 0;
|
|
|
|
iwl_conf->sm_ps = (u8)((ht_conf->cap & IEEE80211_HT_CAP_SM_PS) >> 2);
|
|
|
|
memcpy(&iwl_conf->mcs, &ht_conf->mcs, 16);
|
|
|
|
iwl_conf->tx_chan_width = iwl_conf->supported_chan_width != 0;
|
|
iwl_conf->ht_protection =
|
|
bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
|
|
iwl_conf->non_GF_STA_present =
|
|
!!(bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
|
|
|
|
rcu_read_unlock();
|
|
|
|
IWL_DEBUG_MAC80211("leave\n");
|
|
}
|
|
|
|
/*
|
|
* QoS support
|
|
*/
|
|
static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
|
|
{
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
|
|
return;
|
|
|
|
priv->qos_data.def_qos_parm.qos_flags = 0;
|
|
|
|
if (priv->qos_data.qos_cap.q_AP.queue_request &&
|
|
!priv->qos_data.qos_cap.q_AP.txop_request)
|
|
priv->qos_data.def_qos_parm.qos_flags |=
|
|
QOS_PARAM_FLG_TXOP_TYPE_MSK;
|
|
if (priv->qos_data.qos_active)
|
|
priv->qos_data.def_qos_parm.qos_flags |=
|
|
QOS_PARAM_FLG_UPDATE_EDCA_MSK;
|
|
|
|
if (priv->current_ht_config.is_ht)
|
|
priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
|
|
|
|
if (force || iwl_is_associated(priv)) {
|
|
IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
|
|
priv->qos_data.qos_active,
|
|
priv->qos_data.def_qos_parm.qos_flags);
|
|
|
|
iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
|
|
sizeof(struct iwl_qosparam_cmd),
|
|
&priv->qos_data.def_qos_parm, NULL);
|
|
}
|
|
}
|
|
|
|
#define MAX_UCODE_BEACON_INTERVAL 4096
|
|
|
|
static u16 iwl_adjust_beacon_interval(u16 beacon_val)
|
|
{
|
|
u16 new_val = 0;
|
|
u16 beacon_factor = 0;
|
|
|
|
beacon_factor = (beacon_val + MAX_UCODE_BEACON_INTERVAL)
|
|
/ MAX_UCODE_BEACON_INTERVAL;
|
|
new_val = beacon_val / beacon_factor;
|
|
|
|
return new_val;
|
|
}
|
|
|
|
static void iwl_setup_rxon_timing(struct iwl_priv *priv)
|
|
{
|
|
u64 tsf;
|
|
s32 interval_tm, rem;
|
|
unsigned long flags;
|
|
struct ieee80211_conf *conf = NULL;
|
|
u16 beacon_int = 0;
|
|
|
|
conf = ieee80211_get_hw_conf(priv->hw);
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
|
|
priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
|
|
|
|
if (priv->iw_mode == NL80211_IFTYPE_STATION) {
|
|
beacon_int = iwl_adjust_beacon_interval(priv->beacon_int);
|
|
priv->rxon_timing.atim_window = 0;
|
|
} else {
|
|
beacon_int = iwl_adjust_beacon_interval(conf->beacon_int);
|
|
|
|
/* TODO: we need to get atim_window from upper stack
|
|
* for now we set to 0 */
|
|
priv->rxon_timing.atim_window = 0;
|
|
}
|
|
|
|
priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
|
|
|
|
tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
|
|
interval_tm = beacon_int * 1024;
|
|
rem = do_div(tsf, interval_tm);
|
|
priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
|
|
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
IWL_DEBUG_ASSOC("beacon interval %d beacon timer %d beacon tim %d\n",
|
|
le16_to_cpu(priv->rxon_timing.beacon_interval),
|
|
le32_to_cpu(priv->rxon_timing.beacon_init_val),
|
|
le16_to_cpu(priv->rxon_timing.atim_window));
|
|
}
|
|
|
|
static void iwl_set_flags_for_band(struct iwl_priv *priv,
|
|
enum ieee80211_band band)
|
|
{
|
|
if (band == IEEE80211_BAND_5GHZ) {
|
|
priv->staging_rxon.flags &=
|
|
~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
|
|
| RXON_FLG_CCK_MSK);
|
|
priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
|
|
} else {
|
|
/* Copied from iwl_post_associate() */
|
|
if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
|
|
priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
|
|
else
|
|
priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
|
|
|
|
if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
|
|
priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
|
|
|
|
priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
|
|
priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
|
|
priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* initialize rxon structure with default values from eeprom
|
|
*/
|
|
static void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode)
|
|
{
|
|
const struct iwl_channel_info *ch_info;
|
|
|
|
memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
|
|
|
|
switch (mode) {
|
|
case NL80211_IFTYPE_AP:
|
|
priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
|
|
break;
|
|
|
|
case NL80211_IFTYPE_STATION:
|
|
priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
|
|
priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
|
|
break;
|
|
|
|
case NL80211_IFTYPE_ADHOC:
|
|
priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
|
|
priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
|
|
priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
|
|
RXON_FILTER_ACCEPT_GRP_MSK;
|
|
break;
|
|
|
|
case NL80211_IFTYPE_MONITOR:
|
|
priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
|
|
priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
|
|
RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
|
|
break;
|
|
default:
|
|
IWL_ERR(priv, "Unsupported interface type %d\n", mode);
|
|
break;
|
|
}
|
|
|
|
#if 0
|
|
/* TODO: Figure out when short_preamble would be set and cache from
|
|
* that */
|
|
if (!hw_to_local(priv->hw)->short_preamble)
|
|
priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
|
|
else
|
|
priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
|
|
#endif
|
|
|
|
ch_info = iwl_get_channel_info(priv, priv->band,
|
|
le16_to_cpu(priv->active_rxon.channel));
|
|
|
|
if (!ch_info)
|
|
ch_info = &priv->channel_info[0];
|
|
|
|
/*
|
|
* in some case A channels are all non IBSS
|
|
* in this case force B/G channel
|
|
*/
|
|
if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
|
|
!(is_channel_ibss(ch_info)))
|
|
ch_info = &priv->channel_info[0];
|
|
|
|
priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
|
|
priv->band = ch_info->band;
|
|
|
|
iwl_set_flags_for_band(priv, priv->band);
|
|
|
|
priv->staging_rxon.ofdm_basic_rates =
|
|
(IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
|
|
priv->staging_rxon.cck_basic_rates =
|
|
(IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
|
|
|
|
priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
|
|
RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
|
|
memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
|
|
memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
|
|
priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
|
|
priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
|
|
iwl_set_rxon_chain(priv);
|
|
}
|
|
|
|
static int iwl_set_mode(struct iwl_priv *priv, int mode)
|
|
{
|
|
iwl_connection_init_rx_config(priv, mode);
|
|
memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
|
|
|
|
iwl_clear_stations_table(priv);
|
|
|
|
/* dont commit rxon if rf-kill is on*/
|
|
if (!iwl_is_ready_rf(priv))
|
|
return -EAGAIN;
|
|
|
|
cancel_delayed_work(&priv->scan_check);
|
|
if (iwl_scan_cancel_timeout(priv, 100)) {
|
|
IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
|
|
IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
|
|
return -EAGAIN;
|
|
}
|
|
|
|
iwl_commit_rxon(priv);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void iwl_set_rate(struct iwl_priv *priv)
|
|
{
|
|
const struct ieee80211_supported_band *hw = NULL;
|
|
struct ieee80211_rate *rate;
|
|
int i;
|
|
|
|
hw = iwl_get_hw_mode(priv, priv->band);
|
|
if (!hw) {
|
|
IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
|
|
return;
|
|
}
|
|
|
|
priv->active_rate = 0;
|
|
priv->active_rate_basic = 0;
|
|
|
|
for (i = 0; i < hw->n_bitrates; i++) {
|
|
rate = &(hw->bitrates[i]);
|
|
if (rate->hw_value < IWL_RATE_COUNT)
|
|
priv->active_rate |= (1 << rate->hw_value);
|
|
}
|
|
|
|
IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
|
|
priv->active_rate, priv->active_rate_basic);
|
|
|
|
/*
|
|
* If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
|
|
* otherwise set it to the default of all CCK rates and 6, 12, 24 for
|
|
* OFDM
|
|
*/
|
|
if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
|
|
priv->staging_rxon.cck_basic_rates =
|
|
((priv->active_rate_basic &
|
|
IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
|
|
else
|
|
priv->staging_rxon.cck_basic_rates =
|
|
(IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
|
|
|
|
if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
|
|
priv->staging_rxon.ofdm_basic_rates =
|
|
((priv->active_rate_basic &
|
|
(IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
|
|
IWL_FIRST_OFDM_RATE) & 0xFF;
|
|
else
|
|
priv->staging_rxon.ofdm_basic_rates =
|
|
(IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
|
|
}
|
|
|
|
|
|
/******************************************************************************
|
|
*
|
|
* Generic RX handler implementations
|
|
*
|
|
******************************************************************************/
|
|
static void iwl_rx_reply_alive(struct iwl_priv *priv,
|
|
struct iwl_rx_mem_buffer *rxb)
|
|
{
|
|
struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
|
|
struct iwl_alive_resp *palive;
|
|
struct delayed_work *pwork;
|
|
|
|
palive = &pkt->u.alive_frame;
|
|
|
|
IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
|
|
"0x%01X 0x%01X\n",
|
|
palive->is_valid, palive->ver_type,
|
|
palive->ver_subtype);
|
|
|
|
if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
|
|
IWL_DEBUG_INFO("Initialization Alive received.\n");
|
|
memcpy(&priv->card_alive_init,
|
|
&pkt->u.alive_frame,
|
|
sizeof(struct iwl_init_alive_resp));
|
|
pwork = &priv->init_alive_start;
|
|
} else {
|
|
IWL_DEBUG_INFO("Runtime Alive received.\n");
|
|
memcpy(&priv->card_alive, &pkt->u.alive_frame,
|
|
sizeof(struct iwl_alive_resp));
|
|
pwork = &priv->alive_start;
|
|
}
|
|
|
|
/* We delay the ALIVE response by 5ms to
|
|
* give the HW RF Kill time to activate... */
|
|
if (palive->is_valid == UCODE_VALID_OK)
|
|
queue_delayed_work(priv->workqueue, pwork,
|
|
msecs_to_jiffies(5));
|
|
else
|
|
IWL_WARN(priv, "uCode did not respond OK.\n");
|
|
}
|
|
|
|
static void iwl_rx_reply_error(struct iwl_priv *priv,
|
|
struct iwl_rx_mem_buffer *rxb)
|
|
{
|
|
struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
|
|
|
|
IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
|
|
"seq 0x%04X ser 0x%08X\n",
|
|
le32_to_cpu(pkt->u.err_resp.error_type),
|
|
get_cmd_string(pkt->u.err_resp.cmd_id),
|
|
pkt->u.err_resp.cmd_id,
|
|
le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
|
|
le32_to_cpu(pkt->u.err_resp.error_info));
|
|
}
|
|
|
|
#define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
|
|
|
|
static void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
|
|
{
|
|
struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
|
|
struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
|
|
struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
|
|
IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
|
|
le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
|
|
rxon->channel = csa->channel;
|
|
priv->staging_rxon.channel = csa->channel;
|
|
}
|
|
|
|
static void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
|
|
struct iwl_rx_mem_buffer *rxb)
|
|
{
|
|
#ifdef CONFIG_IWLWIFI_DEBUG
|
|
struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
|
|
struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
|
|
IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
|
|
sleep->pm_sleep_mode, sleep->pm_wakeup_src);
|
|
#endif
|
|
}
|
|
|
|
static void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
|
|
struct iwl_rx_mem_buffer *rxb)
|
|
{
|
|
struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
|
|
IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
|
|
"notification for %s:\n",
|
|
le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
|
|
iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
|
|
}
|
|
|
|
static void iwl_bg_beacon_update(struct work_struct *work)
|
|
{
|
|
struct iwl_priv *priv =
|
|
container_of(work, struct iwl_priv, beacon_update);
|
|
struct sk_buff *beacon;
|
|
|
|
/* Pull updated AP beacon from mac80211. will fail if not in AP mode */
|
|
beacon = ieee80211_beacon_get(priv->hw, priv->vif);
|
|
|
|
if (!beacon) {
|
|
IWL_ERR(priv, "update beacon failed\n");
|
|
return;
|
|
}
|
|
|
|
mutex_lock(&priv->mutex);
|
|
/* new beacon skb is allocated every time; dispose previous.*/
|
|
if (priv->ibss_beacon)
|
|
dev_kfree_skb(priv->ibss_beacon);
|
|
|
|
priv->ibss_beacon = beacon;
|
|
mutex_unlock(&priv->mutex);
|
|
|
|
iwl_send_beacon_cmd(priv);
|
|
}
|
|
|
|
/**
|
|
* iwl_bg_statistics_periodic - Timer callback to queue statistics
|
|
*
|
|
* This callback is provided in order to send a statistics request.
|
|
*
|
|
* This timer function is continually reset to execute within
|
|
* REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
|
|
* was received. We need to ensure we receive the statistics in order
|
|
* to update the temperature used for calibrating the TXPOWER.
|
|
*/
|
|
static void iwl_bg_statistics_periodic(unsigned long data)
|
|
{
|
|
struct iwl_priv *priv = (struct iwl_priv *)data;
|
|
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
|
|
return;
|
|
|
|
/* dont send host command if rf-kill is on */
|
|
if (!iwl_is_ready_rf(priv))
|
|
return;
|
|
|
|
iwl_send_statistics_request(priv, CMD_ASYNC);
|
|
}
|
|
|
|
static void iwl_rx_beacon_notif(struct iwl_priv *priv,
|
|
struct iwl_rx_mem_buffer *rxb)
|
|
{
|
|
#ifdef CONFIG_IWLWIFI_DEBUG
|
|
struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
|
|
struct iwl4965_beacon_notif *beacon =
|
|
(struct iwl4965_beacon_notif *)pkt->u.raw;
|
|
u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
|
|
|
|
IWL_DEBUG_RX("beacon status %x retries %d iss %d "
|
|
"tsf %d %d rate %d\n",
|
|
le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
|
|
beacon->beacon_notify_hdr.failure_frame,
|
|
le32_to_cpu(beacon->ibss_mgr_status),
|
|
le32_to_cpu(beacon->high_tsf),
|
|
le32_to_cpu(beacon->low_tsf), rate);
|
|
#endif
|
|
|
|
if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
|
|
(!test_bit(STATUS_EXIT_PENDING, &priv->status)))
|
|
queue_work(priv->workqueue, &priv->beacon_update);
|
|
}
|
|
|
|
/* Handle notification from uCode that card's power state is changing
|
|
* due to software, hardware, or critical temperature RFKILL */
|
|
static void iwl_rx_card_state_notif(struct iwl_priv *priv,
|
|
struct iwl_rx_mem_buffer *rxb)
|
|
{
|
|
struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
|
|
u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
|
|
unsigned long status = priv->status;
|
|
|
|
IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
|
|
(flags & HW_CARD_DISABLED) ? "Kill" : "On",
|
|
(flags & SW_CARD_DISABLED) ? "Kill" : "On");
|
|
|
|
if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
|
|
RF_CARD_DISABLED)) {
|
|
|
|
iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
|
|
CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
|
|
|
|
if (!iwl_grab_nic_access(priv)) {
|
|
iwl_write_direct32(
|
|
priv, HBUS_TARG_MBX_C,
|
|
HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
|
|
|
|
iwl_release_nic_access(priv);
|
|
}
|
|
|
|
if (!(flags & RXON_CARD_DISABLED)) {
|
|
iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
|
|
CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
|
|
if (!iwl_grab_nic_access(priv)) {
|
|
iwl_write_direct32(
|
|
priv, HBUS_TARG_MBX_C,
|
|
HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
|
|
|
|
iwl_release_nic_access(priv);
|
|
}
|
|
}
|
|
|
|
if (flags & RF_CARD_DISABLED) {
|
|
iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
|
|
CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
|
|
iwl_read32(priv, CSR_UCODE_DRV_GP1);
|
|
if (!iwl_grab_nic_access(priv))
|
|
iwl_release_nic_access(priv);
|
|
}
|
|
}
|
|
|
|
if (flags & HW_CARD_DISABLED)
|
|
set_bit(STATUS_RF_KILL_HW, &priv->status);
|
|
else
|
|
clear_bit(STATUS_RF_KILL_HW, &priv->status);
|
|
|
|
|
|
if (flags & SW_CARD_DISABLED)
|
|
set_bit(STATUS_RF_KILL_SW, &priv->status);
|
|
else
|
|
clear_bit(STATUS_RF_KILL_SW, &priv->status);
|
|
|
|
if (!(flags & RXON_CARD_DISABLED))
|
|
iwl_scan_cancel(priv);
|
|
|
|
if ((test_bit(STATUS_RF_KILL_HW, &status) !=
|
|
test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
|
|
(test_bit(STATUS_RF_KILL_SW, &status) !=
|
|
test_bit(STATUS_RF_KILL_SW, &priv->status)))
|
|
queue_work(priv->workqueue, &priv->rf_kill);
|
|
else
|
|
wake_up_interruptible(&priv->wait_command_queue);
|
|
}
|
|
|
|
int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
|
|
{
|
|
int ret;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
ret = iwl_grab_nic_access(priv);
|
|
if (ret)
|
|
goto err;
|
|
|
|
if (src == IWL_PWR_SRC_VAUX) {
|
|
u32 val;
|
|
ret = pci_read_config_dword(priv->pci_dev, PCI_CFG_POWER_SOURCE,
|
|
&val);
|
|
|
|
if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT)
|
|
iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
|
|
APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
|
|
~APMG_PS_CTRL_MSK_PWR_SRC);
|
|
} else {
|
|
iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
|
|
APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
|
|
~APMG_PS_CTRL_MSK_PWR_SRC);
|
|
}
|
|
|
|
iwl_release_nic_access(priv);
|
|
err:
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* iwl_setup_rx_handlers - Initialize Rx handler callbacks
|
|
*
|
|
* Setup the RX handlers for each of the reply types sent from the uCode
|
|
* to the host.
|
|
*
|
|
* This function chains into the hardware specific files for them to setup
|
|
* any hardware specific handlers as well.
|
|
*/
|
|
static void iwl_setup_rx_handlers(struct iwl_priv *priv)
|
|
{
|
|
priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
|
|
priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
|
|
priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
|
|
priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
|
|
priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
|
|
iwl_rx_pm_debug_statistics_notif;
|
|
priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
|
|
|
|
/*
|
|
* The same handler is used for both the REPLY to a discrete
|
|
* statistics request from the host as well as for the periodic
|
|
* statistics notifications (after received beacons) from the uCode.
|
|
*/
|
|
priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
|
|
priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
|
|
|
|
iwl_setup_spectrum_handlers(priv);
|
|
iwl_setup_rx_scan_handlers(priv);
|
|
|
|
/* status change handler */
|
|
priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
|
|
|
|
priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
|
|
iwl_rx_missed_beacon_notif;
|
|
/* Rx handlers */
|
|
priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
|
|
priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
|
|
/* block ack */
|
|
priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
|
|
/* Set up hardware specific Rx handlers */
|
|
priv->cfg->ops->lib->rx_handler_setup(priv);
|
|
}
|
|
|
|
/**
|
|
* iwl_rx_handle - Main entry function for receiving responses from uCode
|
|
*
|
|
* Uses the priv->rx_handlers callback function array to invoke
|
|
* the appropriate handlers, including command responses,
|
|
* frame-received notifications, and other notifications.
|
|
*/
|
|
void iwl_rx_handle(struct iwl_priv *priv)
|
|
{
|
|
struct iwl_rx_mem_buffer *rxb;
|
|
struct iwl_rx_packet *pkt;
|
|
struct iwl_rx_queue *rxq = &priv->rxq;
|
|
u32 r, i;
|
|
int reclaim;
|
|
unsigned long flags;
|
|
u8 fill_rx = 0;
|
|
u32 count = 8;
|
|
|
|
/* uCode's read index (stored in shared DRAM) indicates the last Rx
|
|
* buffer that the driver may process (last buffer filled by ucode). */
|
|
r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
|
|
i = rxq->read;
|
|
|
|
/* Rx interrupt, but nothing sent from uCode */
|
|
if (i == r)
|
|
IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
|
|
|
|
if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
|
|
fill_rx = 1;
|
|
|
|
while (i != r) {
|
|
rxb = rxq->queue[i];
|
|
|
|
/* If an RXB doesn't have a Rx queue slot associated with it,
|
|
* then a bug has been introduced in the queue refilling
|
|
* routines -- catch it here */
|
|
BUG_ON(rxb == NULL);
|
|
|
|
rxq->queue[i] = NULL;
|
|
|
|
dma_sync_single_range_for_cpu(
|
|
&priv->pci_dev->dev, rxb->real_dma_addr,
|
|
rxb->aligned_dma_addr - rxb->real_dma_addr,
|
|
priv->hw_params.rx_buf_size,
|
|
PCI_DMA_FROMDEVICE);
|
|
pkt = (struct iwl_rx_packet *)rxb->skb->data;
|
|
|
|
/* Reclaim a command buffer only if this packet is a response
|
|
* to a (driver-originated) command.
|
|
* If the packet (e.g. Rx frame) originated from uCode,
|
|
* there is no command buffer to reclaim.
|
|
* Ucode should set SEQ_RX_FRAME bit if ucode-originated,
|
|
* but apparently a few don't get set; catch them here. */
|
|
reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
|
|
(pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
|
|
(pkt->hdr.cmd != REPLY_RX) &&
|
|
(pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
|
|
(pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
|
|
(pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
|
|
(pkt->hdr.cmd != REPLY_TX);
|
|
|
|
/* Based on type of command response or notification,
|
|
* handle those that need handling via function in
|
|
* rx_handlers table. See iwl_setup_rx_handlers() */
|
|
if (priv->rx_handlers[pkt->hdr.cmd]) {
|
|
IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
|
|
i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
|
|
priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
|
|
} else {
|
|
/* No handling needed */
|
|
IWL_DEBUG(IWL_DL_RX,
|
|
"r %d i %d No handler needed for %s, 0x%02x\n",
|
|
r, i, get_cmd_string(pkt->hdr.cmd),
|
|
pkt->hdr.cmd);
|
|
}
|
|
|
|
if (reclaim) {
|
|
/* Invoke any callbacks, transfer the skb to caller, and
|
|
* fire off the (possibly) blocking iwl_send_cmd()
|
|
* as we reclaim the driver command queue */
|
|
if (rxb && rxb->skb)
|
|
iwl_tx_cmd_complete(priv, rxb);
|
|
else
|
|
IWL_WARN(priv, "Claim null rxb?\n");
|
|
}
|
|
|
|
/* For now we just don't re-use anything. We can tweak this
|
|
* later to try and re-use notification packets and SKBs that
|
|
* fail to Rx correctly */
|
|
if (rxb->skb != NULL) {
|
|
priv->alloc_rxb_skb--;
|
|
dev_kfree_skb_any(rxb->skb);
|
|
rxb->skb = NULL;
|
|
}
|
|
|
|
pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
|
|
priv->hw_params.rx_buf_size + 256,
|
|
PCI_DMA_FROMDEVICE);
|
|
spin_lock_irqsave(&rxq->lock, flags);
|
|
list_add_tail(&rxb->list, &priv->rxq.rx_used);
|
|
spin_unlock_irqrestore(&rxq->lock, flags);
|
|
i = (i + 1) & RX_QUEUE_MASK;
|
|
/* If there are a lot of unused frames,
|
|
* restock the Rx queue so ucode wont assert. */
|
|
if (fill_rx) {
|
|
count++;
|
|
if (count >= 8) {
|
|
priv->rxq.read = i;
|
|
iwl_rx_queue_restock(priv);
|
|
count = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Backtrack one entry */
|
|
priv->rxq.read = i;
|
|
iwl_rx_queue_restock(priv);
|
|
}
|
|
|
|
#ifdef CONFIG_IWLWIFI_DEBUG
|
|
static void iwl_print_rx_config_cmd(struct iwl_priv *priv)
|
|
{
|
|
struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
|
|
|
|
IWL_DEBUG_RADIO("RX CONFIG:\n");
|
|
iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
|
|
IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
|
|
IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
|
|
IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
|
|
le32_to_cpu(rxon->filter_flags));
|
|
IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
|
|
IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
|
|
rxon->ofdm_basic_rates);
|
|
IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
|
|
IWL_DEBUG_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
|
|
IWL_DEBUG_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
|
|
IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
|
|
}
|
|
#endif
|
|
|
|
/* call this function to flush any scheduled tasklet */
|
|
static inline void iwl_synchronize_irq(struct iwl_priv *priv)
|
|
{
|
|
/* wait to make sure we flush pending tasklet*/
|
|
synchronize_irq(priv->pci_dev->irq);
|
|
tasklet_kill(&priv->irq_tasklet);
|
|
}
|
|
|
|
/**
|
|
* iwl_irq_handle_error - called for HW or SW error interrupt from card
|
|
*/
|
|
static void iwl_irq_handle_error(struct iwl_priv *priv)
|
|
{
|
|
/* Set the FW error flag -- cleared on iwl_down */
|
|
set_bit(STATUS_FW_ERROR, &priv->status);
|
|
|
|
/* Cancel currently queued command. */
|
|
clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
|
|
|
|
#ifdef CONFIG_IWLWIFI_DEBUG
|
|
if (priv->debug_level & IWL_DL_FW_ERRORS) {
|
|
iwl_dump_nic_error_log(priv);
|
|
iwl_dump_nic_event_log(priv);
|
|
iwl_print_rx_config_cmd(priv);
|
|
}
|
|
#endif
|
|
|
|
wake_up_interruptible(&priv->wait_command_queue);
|
|
|
|
/* Keep the restart process from trying to send host
|
|
* commands by clearing the INIT status bit */
|
|
clear_bit(STATUS_READY, &priv->status);
|
|
|
|
if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
|
|
IWL_DEBUG(IWL_DL_FW_ERRORS,
|
|
"Restarting adapter due to uCode error.\n");
|
|
|
|
if (iwl_is_associated(priv)) {
|
|
memcpy(&priv->recovery_rxon, &priv->active_rxon,
|
|
sizeof(priv->recovery_rxon));
|
|
priv->error_recovering = 1;
|
|
}
|
|
if (priv->cfg->mod_params->restart_fw)
|
|
queue_work(priv->workqueue, &priv->restart);
|
|
}
|
|
}
|
|
|
|
static void iwl_error_recovery(struct iwl_priv *priv)
|
|
{
|
|
unsigned long flags;
|
|
|
|
memcpy(&priv->staging_rxon, &priv->recovery_rxon,
|
|
sizeof(priv->staging_rxon));
|
|
priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
|
|
iwl_commit_rxon(priv);
|
|
|
|
iwl_rxon_add_station(priv, priv->bssid, 1);
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
|
|
priv->error_recovering = 0;
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
}
|
|
|
|
static void iwl_irq_tasklet(struct iwl_priv *priv)
|
|
{
|
|
u32 inta, handled = 0;
|
|
u32 inta_fh;
|
|
unsigned long flags;
|
|
#ifdef CONFIG_IWLWIFI_DEBUG
|
|
u32 inta_mask;
|
|
#endif
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
|
|
/* Ack/clear/reset pending uCode interrupts.
|
|
* Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
|
|
* and will clear only when CSR_FH_INT_STATUS gets cleared. */
|
|
inta = iwl_read32(priv, CSR_INT);
|
|
iwl_write32(priv, CSR_INT, inta);
|
|
|
|
/* Ack/clear/reset pending flow-handler (DMA) interrupts.
|
|
* Any new interrupts that happen after this, either while we're
|
|
* in this tasklet, or later, will show up in next ISR/tasklet. */
|
|
inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
|
|
iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
|
|
|
|
#ifdef CONFIG_IWLWIFI_DEBUG
|
|
if (priv->debug_level & IWL_DL_ISR) {
|
|
/* just for debug */
|
|
inta_mask = iwl_read32(priv, CSR_INT_MASK);
|
|
IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
|
|
inta, inta_mask, inta_fh);
|
|
}
|
|
#endif
|
|
|
|
/* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
|
|
* atomic, make sure that inta covers all the interrupts that
|
|
* we've discovered, even if FH interrupt came in just after
|
|
* reading CSR_INT. */
|
|
if (inta_fh & CSR49_FH_INT_RX_MASK)
|
|
inta |= CSR_INT_BIT_FH_RX;
|
|
if (inta_fh & CSR49_FH_INT_TX_MASK)
|
|
inta |= CSR_INT_BIT_FH_TX;
|
|
|
|
/* Now service all interrupt bits discovered above. */
|
|
if (inta & CSR_INT_BIT_HW_ERR) {
|
|
IWL_ERR(priv, "Microcode HW error detected. Restarting.\n");
|
|
|
|
/* Tell the device to stop sending interrupts */
|
|
iwl_disable_interrupts(priv);
|
|
|
|
iwl_irq_handle_error(priv);
|
|
|
|
handled |= CSR_INT_BIT_HW_ERR;
|
|
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
return;
|
|
}
|
|
|
|
#ifdef CONFIG_IWLWIFI_DEBUG
|
|
if (priv->debug_level & (IWL_DL_ISR)) {
|
|
/* NIC fires this, but we don't use it, redundant with WAKEUP */
|
|
if (inta & CSR_INT_BIT_SCD)
|
|
IWL_DEBUG_ISR("Scheduler finished to transmit "
|
|
"the frame/frames.\n");
|
|
|
|
/* Alive notification via Rx interrupt will do the real work */
|
|
if (inta & CSR_INT_BIT_ALIVE)
|
|
IWL_DEBUG_ISR("Alive interrupt\n");
|
|
}
|
|
#endif
|
|
/* Safely ignore these bits for debug checks below */
|
|
inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
|
|
|
|
/* HW RF KILL switch toggled */
|
|
if (inta & CSR_INT_BIT_RF_KILL) {
|
|
int hw_rf_kill = 0;
|
|
if (!(iwl_read32(priv, CSR_GP_CNTRL) &
|
|
CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
|
|
hw_rf_kill = 1;
|
|
|
|
IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
|
|
hw_rf_kill ? "disable radio" : "enable radio");
|
|
|
|
/* driver only loads ucode once setting the interface up.
|
|
* the driver allows loading the ucode even if the radio
|
|
* is killed. Hence update the killswitch state here. The
|
|
* rfkill handler will care about restarting if needed.
|
|
*/
|
|
if (!test_bit(STATUS_ALIVE, &priv->status)) {
|
|
if (hw_rf_kill)
|
|
set_bit(STATUS_RF_KILL_HW, &priv->status);
|
|
else
|
|
clear_bit(STATUS_RF_KILL_HW, &priv->status);
|
|
queue_work(priv->workqueue, &priv->rf_kill);
|
|
}
|
|
|
|
handled |= CSR_INT_BIT_RF_KILL;
|
|
}
|
|
|
|
/* Chip got too hot and stopped itself */
|
|
if (inta & CSR_INT_BIT_CT_KILL) {
|
|
IWL_ERR(priv, "Microcode CT kill error detected.\n");
|
|
handled |= CSR_INT_BIT_CT_KILL;
|
|
}
|
|
|
|
/* Error detected by uCode */
|
|
if (inta & CSR_INT_BIT_SW_ERR) {
|
|
IWL_ERR(priv, "Microcode SW error detected. "
|
|
" Restarting 0x%X.\n", inta);
|
|
iwl_irq_handle_error(priv);
|
|
handled |= CSR_INT_BIT_SW_ERR;
|
|
}
|
|
|
|
/* uCode wakes up after power-down sleep */
|
|
if (inta & CSR_INT_BIT_WAKEUP) {
|
|
IWL_DEBUG_ISR("Wakeup interrupt\n");
|
|
iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
|
|
iwl_txq_update_write_ptr(priv, &priv->txq[0]);
|
|
iwl_txq_update_write_ptr(priv, &priv->txq[1]);
|
|
iwl_txq_update_write_ptr(priv, &priv->txq[2]);
|
|
iwl_txq_update_write_ptr(priv, &priv->txq[3]);
|
|
iwl_txq_update_write_ptr(priv, &priv->txq[4]);
|
|
iwl_txq_update_write_ptr(priv, &priv->txq[5]);
|
|
|
|
handled |= CSR_INT_BIT_WAKEUP;
|
|
}
|
|
|
|
/* All uCode command responses, including Tx command responses,
|
|
* Rx "responses" (frame-received notification), and other
|
|
* notifications from uCode come through here*/
|
|
if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
|
|
iwl_rx_handle(priv);
|
|
handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
|
|
}
|
|
|
|
if (inta & CSR_INT_BIT_FH_TX) {
|
|
IWL_DEBUG_ISR("Tx interrupt\n");
|
|
handled |= CSR_INT_BIT_FH_TX;
|
|
/* FH finished to write, send event */
|
|
priv->ucode_write_complete = 1;
|
|
wake_up_interruptible(&priv->wait_command_queue);
|
|
}
|
|
|
|
if (inta & ~handled)
|
|
IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
|
|
|
|
if (inta & ~CSR_INI_SET_MASK) {
|
|
IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
|
|
inta & ~CSR_INI_SET_MASK);
|
|
IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
|
|
}
|
|
|
|
/* Re-enable all interrupts */
|
|
/* only Re-enable if diabled by irq */
|
|
if (test_bit(STATUS_INT_ENABLED, &priv->status))
|
|
iwl_enable_interrupts(priv);
|
|
|
|
#ifdef CONFIG_IWLWIFI_DEBUG
|
|
if (priv->debug_level & (IWL_DL_ISR)) {
|
|
inta = iwl_read32(priv, CSR_INT);
|
|
inta_mask = iwl_read32(priv, CSR_INT_MASK);
|
|
inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
|
|
IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
|
|
"flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
|
|
}
|
|
#endif
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
}
|
|
|
|
static irqreturn_t iwl_isr(int irq, void *data)
|
|
{
|
|
struct iwl_priv *priv = data;
|
|
u32 inta, inta_mask;
|
|
u32 inta_fh;
|
|
if (!priv)
|
|
return IRQ_NONE;
|
|
|
|
spin_lock(&priv->lock);
|
|
|
|
/* Disable (but don't clear!) interrupts here to avoid
|
|
* back-to-back ISRs and sporadic interrupts from our NIC.
|
|
* If we have something to service, the tasklet will re-enable ints.
|
|
* If we *don't* have something, we'll re-enable before leaving here. */
|
|
inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
|
|
iwl_write32(priv, CSR_INT_MASK, 0x00000000);
|
|
|
|
/* Discover which interrupts are active/pending */
|
|
inta = iwl_read32(priv, CSR_INT);
|
|
inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
|
|
|
|
/* Ignore interrupt if there's nothing in NIC to service.
|
|
* This may be due to IRQ shared with another device,
|
|
* or due to sporadic interrupts thrown from our NIC. */
|
|
if (!inta && !inta_fh) {
|
|
IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
|
|
goto none;
|
|
}
|
|
|
|
if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
|
|
/* Hardware disappeared. It might have already raised
|
|
* an interrupt */
|
|
IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
|
|
goto unplugged;
|
|
}
|
|
|
|
IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
|
|
inta, inta_mask, inta_fh);
|
|
|
|
inta &= ~CSR_INT_BIT_SCD;
|
|
|
|
/* iwl_irq_tasklet() will service interrupts and re-enable them */
|
|
if (likely(inta || inta_fh))
|
|
tasklet_schedule(&priv->irq_tasklet);
|
|
|
|
unplugged:
|
|
spin_unlock(&priv->lock);
|
|
return IRQ_HANDLED;
|
|
|
|
none:
|
|
/* re-enable interrupts here since we don't have anything to service. */
|
|
/* only Re-enable if diabled by irq */
|
|
if (test_bit(STATUS_INT_ENABLED, &priv->status))
|
|
iwl_enable_interrupts(priv);
|
|
spin_unlock(&priv->lock);
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* uCode download functions
|
|
*
|
|
******************************************************************************/
|
|
|
|
static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
|
|
{
|
|
iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
|
|
iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
|
|
iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
|
|
iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
|
|
iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
|
|
iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
|
|
}
|
|
|
|
static void iwl_nic_start(struct iwl_priv *priv)
|
|
{
|
|
/* Remove all resets to allow NIC to operate */
|
|
iwl_write32(priv, CSR_RESET, 0);
|
|
}
|
|
|
|
|
|
/**
|
|
* iwl_read_ucode - Read uCode images from disk file.
|
|
*
|
|
* Copy into buffers for card to fetch via bus-mastering
|
|
*/
|
|
static int iwl_read_ucode(struct iwl_priv *priv)
|
|
{
|
|
struct iwl_ucode *ucode;
|
|
int ret = -EINVAL, index;
|
|
const struct firmware *ucode_raw;
|
|
const char *name_pre = priv->cfg->fw_name_pre;
|
|
const unsigned int api_max = priv->cfg->ucode_api_max;
|
|
const unsigned int api_min = priv->cfg->ucode_api_min;
|
|
char buf[25];
|
|
u8 *src;
|
|
size_t len;
|
|
u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
|
|
|
|
/* Ask kernel firmware_class module to get the boot firmware off disk.
|
|
* request_firmware() is synchronous, file is in memory on return. */
|
|
for (index = api_max; index >= api_min; index--) {
|
|
sprintf(buf, "%s%d%s", name_pre, index, ".ucode");
|
|
ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
|
|
if (ret < 0) {
|
|
IWL_ERR(priv, "%s firmware file req failed: %d\n",
|
|
buf, ret);
|
|
if (ret == -ENOENT)
|
|
continue;
|
|
else
|
|
goto error;
|
|
} else {
|
|
if (index < api_max)
|
|
IWL_ERR(priv, "Loaded firmware %s, "
|
|
"which is deprecated. "
|
|
"Please use API v%u instead.\n",
|
|
buf, api_max);
|
|
|
|
IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
|
|
buf, ucode_raw->size);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (ret < 0)
|
|
goto error;
|
|
|
|
/* Make sure that we got at least our header! */
|
|
if (ucode_raw->size < sizeof(*ucode)) {
|
|
IWL_ERR(priv, "File size way too small!\n");
|
|
ret = -EINVAL;
|
|
goto err_release;
|
|
}
|
|
|
|
/* Data from ucode file: header followed by uCode images */
|
|
ucode = (void *)ucode_raw->data;
|
|
|
|
priv->ucode_ver = le32_to_cpu(ucode->ver);
|
|
api_ver = IWL_UCODE_API(priv->ucode_ver);
|
|
inst_size = le32_to_cpu(ucode->inst_size);
|
|
data_size = le32_to_cpu(ucode->data_size);
|
|
init_size = le32_to_cpu(ucode->init_size);
|
|
init_data_size = le32_to_cpu(ucode->init_data_size);
|
|
boot_size = le32_to_cpu(ucode->boot_size);
|
|
|
|
/* api_ver should match the api version forming part of the
|
|
* firmware filename ... but we don't check for that and only rely
|
|
* on the API version read from firware header from here on forward */
|
|
|
|
if (api_ver < api_min || api_ver > api_max) {
|
|
IWL_ERR(priv, "Driver unable to support your firmware API. "
|
|
"Driver supports v%u, firmware is v%u.\n",
|
|
api_max, api_ver);
|
|
priv->ucode_ver = 0;
|
|
ret = -EINVAL;
|
|
goto err_release;
|
|
}
|
|
if (api_ver != api_max)
|
|
IWL_ERR(priv, "Firmware has old API version. Expected v%u, "
|
|
"got v%u. New firmware can be obtained "
|
|
"from http://www.intellinuxwireless.org.\n",
|
|
api_max, api_ver);
|
|
|
|
IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
|
|
IWL_UCODE_MAJOR(priv->ucode_ver),
|
|
IWL_UCODE_MINOR(priv->ucode_ver),
|
|
IWL_UCODE_API(priv->ucode_ver),
|
|
IWL_UCODE_SERIAL(priv->ucode_ver));
|
|
|
|
IWL_DEBUG_INFO("f/w package hdr ucode version raw = 0x%x\n",
|
|
priv->ucode_ver);
|
|
IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
|
|
inst_size);
|
|
IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
|
|
data_size);
|
|
IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
|
|
init_size);
|
|
IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
|
|
init_data_size);
|
|
IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
|
|
boot_size);
|
|
|
|
/* Verify size of file vs. image size info in file's header */
|
|
if (ucode_raw->size < sizeof(*ucode) +
|
|
inst_size + data_size + init_size +
|
|
init_data_size + boot_size) {
|
|
|
|
IWL_DEBUG_INFO("uCode file size %d too small\n",
|
|
(int)ucode_raw->size);
|
|
ret = -EINVAL;
|
|
goto err_release;
|
|
}
|
|
|
|
/* Verify that uCode images will fit in card's SRAM */
|
|
if (inst_size > priv->hw_params.max_inst_size) {
|
|
IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
|
|
inst_size);
|
|
ret = -EINVAL;
|
|
goto err_release;
|
|
}
|
|
|
|
if (data_size > priv->hw_params.max_data_size) {
|
|
IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
|
|
data_size);
|
|
ret = -EINVAL;
|
|
goto err_release;
|
|
}
|
|
if (init_size > priv->hw_params.max_inst_size) {
|
|
IWL_DEBUG_INFO
|
|
("uCode init instr len %d too large to fit in\n",
|
|
init_size);
|
|
ret = -EINVAL;
|
|
goto err_release;
|
|
}
|
|
if (init_data_size > priv->hw_params.max_data_size) {
|
|
IWL_DEBUG_INFO
|
|
("uCode init data len %d too large to fit in\n",
|
|
init_data_size);
|
|
ret = -EINVAL;
|
|
goto err_release;
|
|
}
|
|
if (boot_size > priv->hw_params.max_bsm_size) {
|
|
IWL_DEBUG_INFO
|
|
("uCode boot instr len %d too large to fit in\n",
|
|
boot_size);
|
|
ret = -EINVAL;
|
|
goto err_release;
|
|
}
|
|
|
|
/* Allocate ucode buffers for card's bus-master loading ... */
|
|
|
|
/* Runtime instructions and 2 copies of data:
|
|
* 1) unmodified from disk
|
|
* 2) backup cache for save/restore during power-downs */
|
|
priv->ucode_code.len = inst_size;
|
|
iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
|
|
|
|
priv->ucode_data.len = data_size;
|
|
iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
|
|
|
|
priv->ucode_data_backup.len = data_size;
|
|
iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
|
|
|
|
/* Initialization instructions and data */
|
|
if (init_size && init_data_size) {
|
|
priv->ucode_init.len = init_size;
|
|
iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
|
|
|
|
priv->ucode_init_data.len = init_data_size;
|
|
iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
|
|
|
|
if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
|
|
goto err_pci_alloc;
|
|
}
|
|
|
|
/* Bootstrap (instructions only, no data) */
|
|
if (boot_size) {
|
|
priv->ucode_boot.len = boot_size;
|
|
iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
|
|
|
|
if (!priv->ucode_boot.v_addr)
|
|
goto err_pci_alloc;
|
|
}
|
|
|
|
/* Copy images into buffers for card's bus-master reads ... */
|
|
|
|
/* Runtime instructions (first block of data in file) */
|
|
src = &ucode->data[0];
|
|
len = priv->ucode_code.len;
|
|
IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
|
|
memcpy(priv->ucode_code.v_addr, src, len);
|
|
IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
|
|
priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
|
|
|
|
/* Runtime data (2nd block)
|
|
* NOTE: Copy into backup buffer will be done in iwl_up() */
|
|
src = &ucode->data[inst_size];
|
|
len = priv->ucode_data.len;
|
|
IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
|
|
memcpy(priv->ucode_data.v_addr, src, len);
|
|
memcpy(priv->ucode_data_backup.v_addr, src, len);
|
|
|
|
/* Initialization instructions (3rd block) */
|
|
if (init_size) {
|
|
src = &ucode->data[inst_size + data_size];
|
|
len = priv->ucode_init.len;
|
|
IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
|
|
len);
|
|
memcpy(priv->ucode_init.v_addr, src, len);
|
|
}
|
|
|
|
/* Initialization data (4th block) */
|
|
if (init_data_size) {
|
|
src = &ucode->data[inst_size + data_size + init_size];
|
|
len = priv->ucode_init_data.len;
|
|
IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
|
|
len);
|
|
memcpy(priv->ucode_init_data.v_addr, src, len);
|
|
}
|
|
|
|
/* Bootstrap instructions (5th block) */
|
|
src = &ucode->data[inst_size + data_size + init_size + init_data_size];
|
|
len = priv->ucode_boot.len;
|
|
IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
|
|
memcpy(priv->ucode_boot.v_addr, src, len);
|
|
|
|
/* We have our copies now, allow OS release its copies */
|
|
release_firmware(ucode_raw);
|
|
return 0;
|
|
|
|
err_pci_alloc:
|
|
IWL_ERR(priv, "failed to allocate pci memory\n");
|
|
ret = -ENOMEM;
|
|
iwl_dealloc_ucode_pci(priv);
|
|
|
|
err_release:
|
|
release_firmware(ucode_raw);
|
|
|
|
error:
|
|
return ret;
|
|
}
|
|
|
|
/* temporary */
|
|
static int iwl_mac_beacon_update(struct ieee80211_hw *hw,
|
|
struct sk_buff *skb);
|
|
|
|
/**
|
|
* iwl_alive_start - called after REPLY_ALIVE notification received
|
|
* from protocol/runtime uCode (initialization uCode's
|
|
* Alive gets handled by iwl_init_alive_start()).
|
|
*/
|
|
static void iwl_alive_start(struct iwl_priv *priv)
|
|
{
|
|
int ret = 0;
|
|
|
|
IWL_DEBUG_INFO("Runtime Alive received.\n");
|
|
|
|
if (priv->card_alive.is_valid != UCODE_VALID_OK) {
|
|
/* We had an error bringing up the hardware, so take it
|
|
* all the way back down so we can try again */
|
|
IWL_DEBUG_INFO("Alive failed.\n");
|
|
goto restart;
|
|
}
|
|
|
|
/* Initialize uCode has loaded Runtime uCode ... verify inst image.
|
|
* This is a paranoid check, because we would not have gotten the
|
|
* "runtime" alive if code weren't properly loaded. */
|
|
if (iwl_verify_ucode(priv)) {
|
|
/* Runtime instruction load was bad;
|
|
* take it all the way back down so we can try again */
|
|
IWL_DEBUG_INFO("Bad runtime uCode load.\n");
|
|
goto restart;
|
|
}
|
|
|
|
iwl_clear_stations_table(priv);
|
|
ret = priv->cfg->ops->lib->alive_notify(priv);
|
|
if (ret) {
|
|
IWL_WARN(priv,
|
|
"Could not complete ALIVE transition [ntf]: %d\n", ret);
|
|
goto restart;
|
|
}
|
|
|
|
/* After the ALIVE response, we can send host commands to the uCode */
|
|
set_bit(STATUS_ALIVE, &priv->status);
|
|
|
|
if (iwl_is_rfkill(priv))
|
|
return;
|
|
|
|
ieee80211_wake_queues(priv->hw);
|
|
|
|
priv->active_rate = priv->rates_mask;
|
|
priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
|
|
|
|
if (iwl_is_associated(priv)) {
|
|
struct iwl_rxon_cmd *active_rxon =
|
|
(struct iwl_rxon_cmd *)&priv->active_rxon;
|
|
|
|
memcpy(&priv->staging_rxon, &priv->active_rxon,
|
|
sizeof(priv->staging_rxon));
|
|
active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
|
|
} else {
|
|
/* Initialize our rx_config data */
|
|
iwl_connection_init_rx_config(priv, priv->iw_mode);
|
|
memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
|
|
}
|
|
|
|
/* Configure Bluetooth device coexistence support */
|
|
iwl_send_bt_config(priv);
|
|
|
|
iwl_reset_run_time_calib(priv);
|
|
|
|
/* Configure the adapter for unassociated operation */
|
|
iwl_commit_rxon(priv);
|
|
|
|
/* At this point, the NIC is initialized and operational */
|
|
iwl_rf_kill_ct_config(priv);
|
|
|
|
iwl_leds_register(priv);
|
|
|
|
IWL_DEBUG_INFO("ALIVE processing complete.\n");
|
|
set_bit(STATUS_READY, &priv->status);
|
|
wake_up_interruptible(&priv->wait_command_queue);
|
|
|
|
if (priv->error_recovering)
|
|
iwl_error_recovery(priv);
|
|
|
|
iwl_power_update_mode(priv, 1);
|
|
|
|
/* reassociate for ADHOC mode */
|
|
if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
|
|
struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
|
|
priv->vif);
|
|
if (beacon)
|
|
iwl_mac_beacon_update(priv->hw, beacon);
|
|
}
|
|
|
|
|
|
if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
|
|
iwl_set_mode(priv, priv->iw_mode);
|
|
|
|
return;
|
|
|
|
restart:
|
|
queue_work(priv->workqueue, &priv->restart);
|
|
}
|
|
|
|
static void iwl_cancel_deferred_work(struct iwl_priv *priv);
|
|
|
|
static void __iwl_down(struct iwl_priv *priv)
|
|
{
|
|
unsigned long flags;
|
|
int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
|
|
|
|
IWL_DEBUG_INFO(DRV_NAME " is going down\n");
|
|
|
|
if (!exit_pending)
|
|
set_bit(STATUS_EXIT_PENDING, &priv->status);
|
|
|
|
iwl_leds_unregister(priv);
|
|
|
|
iwl_clear_stations_table(priv);
|
|
|
|
/* Unblock any waiting calls */
|
|
wake_up_interruptible_all(&priv->wait_command_queue);
|
|
|
|
/* Wipe out the EXIT_PENDING status bit if we are not actually
|
|
* exiting the module */
|
|
if (!exit_pending)
|
|
clear_bit(STATUS_EXIT_PENDING, &priv->status);
|
|
|
|
/* stop and reset the on-board processor */
|
|
iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
|
|
|
|
/* tell the device to stop sending interrupts */
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
iwl_disable_interrupts(priv);
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
iwl_synchronize_irq(priv);
|
|
|
|
if (priv->mac80211_registered)
|
|
ieee80211_stop_queues(priv->hw);
|
|
|
|
/* If we have not previously called iwl_init() then
|
|
* clear all bits but the RF Kill and SUSPEND bits and return */
|
|
if (!iwl_is_init(priv)) {
|
|
priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
|
|
STATUS_RF_KILL_HW |
|
|
test_bit(STATUS_RF_KILL_SW, &priv->status) <<
|
|
STATUS_RF_KILL_SW |
|
|
test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
|
|
STATUS_GEO_CONFIGURED |
|
|
test_bit(STATUS_IN_SUSPEND, &priv->status) <<
|
|
STATUS_IN_SUSPEND |
|
|
test_bit(STATUS_EXIT_PENDING, &priv->status) <<
|
|
STATUS_EXIT_PENDING;
|
|
goto exit;
|
|
}
|
|
|
|
/* ...otherwise clear out all the status bits but the RF Kill and
|
|
* SUSPEND bits and continue taking the NIC down. */
|
|
priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
|
|
STATUS_RF_KILL_HW |
|
|
test_bit(STATUS_RF_KILL_SW, &priv->status) <<
|
|
STATUS_RF_KILL_SW |
|
|
test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
|
|
STATUS_GEO_CONFIGURED |
|
|
test_bit(STATUS_IN_SUSPEND, &priv->status) <<
|
|
STATUS_IN_SUSPEND |
|
|
test_bit(STATUS_FW_ERROR, &priv->status) <<
|
|
STATUS_FW_ERROR |
|
|
test_bit(STATUS_EXIT_PENDING, &priv->status) <<
|
|
STATUS_EXIT_PENDING;
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
iwl_clear_bit(priv, CSR_GP_CNTRL,
|
|
CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
iwl_txq_ctx_stop(priv);
|
|
iwl_rxq_stop(priv);
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
if (!iwl_grab_nic_access(priv)) {
|
|
iwl_write_prph(priv, APMG_CLK_DIS_REG,
|
|
APMG_CLK_VAL_DMA_CLK_RQT);
|
|
iwl_release_nic_access(priv);
|
|
}
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
udelay(5);
|
|
|
|
/* FIXME: apm_ops.suspend(priv) */
|
|
if (exit_pending || test_bit(STATUS_IN_SUSPEND, &priv->status))
|
|
priv->cfg->ops->lib->apm_ops.stop(priv);
|
|
else
|
|
priv->cfg->ops->lib->apm_ops.reset(priv);
|
|
exit:
|
|
memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
|
|
|
|
if (priv->ibss_beacon)
|
|
dev_kfree_skb(priv->ibss_beacon);
|
|
priv->ibss_beacon = NULL;
|
|
|
|
/* clear out any free frames */
|
|
iwl_clear_free_frames(priv);
|
|
}
|
|
|
|
static void iwl_down(struct iwl_priv *priv)
|
|
{
|
|
mutex_lock(&priv->mutex);
|
|
__iwl_down(priv);
|
|
mutex_unlock(&priv->mutex);
|
|
|
|
iwl_cancel_deferred_work(priv);
|
|
}
|
|
|
|
#define MAX_HW_RESTARTS 5
|
|
|
|
static int __iwl_up(struct iwl_priv *priv)
|
|
{
|
|
int i;
|
|
int ret;
|
|
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
|
|
IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
|
|
return -EIO;
|
|
}
|
|
|
|
if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
|
|
IWL_ERR(priv, "ucode not available for device bringup\n");
|
|
return -EIO;
|
|
}
|
|
|
|
/* If platform's RF_KILL switch is NOT set to KILL */
|
|
if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
|
|
clear_bit(STATUS_RF_KILL_HW, &priv->status);
|
|
else
|
|
set_bit(STATUS_RF_KILL_HW, &priv->status);
|
|
|
|
if (iwl_is_rfkill(priv)) {
|
|
iwl_enable_interrupts(priv);
|
|
IWL_WARN(priv, "Radio disabled by %s RF Kill switch\n",
|
|
test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
|
|
return 0;
|
|
}
|
|
|
|
iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
|
|
|
|
ret = iwl_hw_nic_init(priv);
|
|
if (ret) {
|
|
IWL_ERR(priv, "Unable to init nic\n");
|
|
return ret;
|
|
}
|
|
|
|
/* make sure rfkill handshake bits are cleared */
|
|
iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
|
|
iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
|
|
CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
|
|
|
|
/* clear (again), then enable host interrupts */
|
|
iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
|
|
iwl_enable_interrupts(priv);
|
|
|
|
/* really make sure rfkill handshake bits are cleared */
|
|
iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
|
|
iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
|
|
|
|
/* Copy original ucode data image from disk into backup cache.
|
|
* This will be used to initialize the on-board processor's
|
|
* data SRAM for a clean start when the runtime program first loads. */
|
|
memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
|
|
priv->ucode_data.len);
|
|
|
|
for (i = 0; i < MAX_HW_RESTARTS; i++) {
|
|
|
|
iwl_clear_stations_table(priv);
|
|
|
|
/* load bootstrap state machine,
|
|
* load bootstrap program into processor's memory,
|
|
* prepare to load the "initialize" uCode */
|
|
ret = priv->cfg->ops->lib->load_ucode(priv);
|
|
|
|
if (ret) {
|
|
IWL_ERR(priv, "Unable to set up bootstrap uCode: %d\n",
|
|
ret);
|
|
continue;
|
|
}
|
|
|
|
/* Clear out the uCode error bit if it is set */
|
|
clear_bit(STATUS_FW_ERROR, &priv->status);
|
|
|
|
/* start card; "initialize" will load runtime ucode */
|
|
iwl_nic_start(priv);
|
|
|
|
IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
set_bit(STATUS_EXIT_PENDING, &priv->status);
|
|
__iwl_down(priv);
|
|
clear_bit(STATUS_EXIT_PENDING, &priv->status);
|
|
|
|
/* tried to restart and config the device for as long as our
|
|
* patience could withstand */
|
|
IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
|
|
return -EIO;
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* Workqueue callbacks
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static void iwl_bg_init_alive_start(struct work_struct *data)
|
|
{
|
|
struct iwl_priv *priv =
|
|
container_of(data, struct iwl_priv, init_alive_start.work);
|
|
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
|
|
return;
|
|
|
|
mutex_lock(&priv->mutex);
|
|
priv->cfg->ops->lib->init_alive_start(priv);
|
|
mutex_unlock(&priv->mutex);
|
|
}
|
|
|
|
static void iwl_bg_alive_start(struct work_struct *data)
|
|
{
|
|
struct iwl_priv *priv =
|
|
container_of(data, struct iwl_priv, alive_start.work);
|
|
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
|
|
return;
|
|
|
|
mutex_lock(&priv->mutex);
|
|
iwl_alive_start(priv);
|
|
mutex_unlock(&priv->mutex);
|
|
}
|
|
|
|
static void iwl_bg_run_time_calib_work(struct work_struct *work)
|
|
{
|
|
struct iwl_priv *priv = container_of(work, struct iwl_priv,
|
|
run_time_calib_work);
|
|
|
|
mutex_lock(&priv->mutex);
|
|
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
|
|
test_bit(STATUS_SCANNING, &priv->status)) {
|
|
mutex_unlock(&priv->mutex);
|
|
return;
|
|
}
|
|
|
|
if (priv->start_calib) {
|
|
iwl_chain_noise_calibration(priv, &priv->statistics);
|
|
|
|
iwl_sensitivity_calibration(priv, &priv->statistics);
|
|
}
|
|
|
|
mutex_unlock(&priv->mutex);
|
|
return;
|
|
}
|
|
|
|
static void iwl_bg_up(struct work_struct *data)
|
|
{
|
|
struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
|
|
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
|
|
return;
|
|
|
|
mutex_lock(&priv->mutex);
|
|
__iwl_up(priv);
|
|
mutex_unlock(&priv->mutex);
|
|
iwl_rfkill_set_hw_state(priv);
|
|
}
|
|
|
|
static void iwl_bg_restart(struct work_struct *data)
|
|
{
|
|
struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
|
|
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
|
|
return;
|
|
|
|
iwl_down(priv);
|
|
queue_work(priv->workqueue, &priv->up);
|
|
}
|
|
|
|
static void iwl_bg_rx_replenish(struct work_struct *data)
|
|
{
|
|
struct iwl_priv *priv =
|
|
container_of(data, struct iwl_priv, rx_replenish);
|
|
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
|
|
return;
|
|
|
|
mutex_lock(&priv->mutex);
|
|
iwl_rx_replenish(priv);
|
|
mutex_unlock(&priv->mutex);
|
|
}
|
|
|
|
#define IWL_DELAY_NEXT_SCAN (HZ*2)
|
|
|
|
static void iwl_post_associate(struct iwl_priv *priv)
|
|
{
|
|
struct ieee80211_conf *conf = NULL;
|
|
int ret = 0;
|
|
unsigned long flags;
|
|
|
|
if (priv->iw_mode == NL80211_IFTYPE_AP) {
|
|
IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
|
|
return;
|
|
}
|
|
|
|
IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
|
|
priv->assoc_id, priv->active_rxon.bssid_addr);
|
|
|
|
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
|
|
return;
|
|
|
|
|
|
if (!priv->vif || !priv->is_open)
|
|
return;
|
|
|
|
iwl_power_cancel_timeout(priv);
|
|
iwl_scan_cancel_timeout(priv, 200);
|
|
|
|
conf = ieee80211_get_hw_conf(priv->hw);
|
|
|
|
priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
|
|
iwl_commit_rxon(priv);
|
|
|
|
iwl_setup_rxon_timing(priv);
|
|
ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
|
|
sizeof(priv->rxon_timing), &priv->rxon_timing);
|
|
if (ret)
|
|
IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
|
|
"Attempting to continue.\n");
|
|
|
|
priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
|
|
|
|
iwl_set_rxon_ht(priv, &priv->current_ht_config);
|
|
|
|
iwl_set_rxon_chain(priv);
|
|
priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
|
|
|
|
IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
|
|
priv->assoc_id, priv->beacon_int);
|
|
|
|
if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
|
|
priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
|
|
else
|
|
priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
|
|
|
|
if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
|
|
if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
|
|
priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
|
|
else
|
|
priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
|
|
|
|
if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
|
|
priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
|
|
|
|
}
|
|
|
|
iwl_commit_rxon(priv);
|
|
|
|
switch (priv->iw_mode) {
|
|
case NL80211_IFTYPE_STATION:
|
|
break;
|
|
|
|
case NL80211_IFTYPE_ADHOC:
|
|
|
|
/* assume default assoc id */
|
|
priv->assoc_id = 1;
|
|
|
|
iwl_rxon_add_station(priv, priv->bssid, 0);
|
|
iwl_send_beacon_cmd(priv);
|
|
|
|
break;
|
|
|
|
default:
|
|
IWL_ERR(priv, "%s Should not be called in %d mode\n",
|
|
__func__, priv->iw_mode);
|
|
break;
|
|
}
|
|
|
|
if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
|
|
priv->assoc_station_added = 1;
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
iwl_activate_qos(priv, 0);
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
/* the chain noise calibration will enabled PM upon completion
|
|
* If chain noise has already been run, then we need to enable
|
|
* power management here */
|
|
if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
|
|
iwl_power_enable_management(priv);
|
|
|
|
/* Enable Rx differential gain and sensitivity calibrations */
|
|
iwl_chain_noise_reset(priv);
|
|
priv->start_calib = 1;
|
|
|
|
}
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* mac80211 entry point functions
|
|
*
|
|
*****************************************************************************/
|
|
|
|
#define UCODE_READY_TIMEOUT (4 * HZ)
|
|
|
|
static int iwl_mac_start(struct ieee80211_hw *hw)
|
|
{
|
|
struct iwl_priv *priv = hw->priv;
|
|
int ret;
|
|
|
|
IWL_DEBUG_MAC80211("enter\n");
|
|
|
|
/* we should be verifying the device is ready to be opened */
|
|
mutex_lock(&priv->mutex);
|
|
|
|
memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
|
|
/* fetch ucode file from disk, alloc and copy to bus-master buffers ...
|
|
* ucode filename and max sizes are card-specific. */
|
|
|
|
if (!priv->ucode_code.len) {
|
|
ret = iwl_read_ucode(priv);
|
|
if (ret) {
|
|
IWL_ERR(priv, "Could not read microcode: %d\n", ret);
|
|
mutex_unlock(&priv->mutex);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
ret = __iwl_up(priv);
|
|
|
|
mutex_unlock(&priv->mutex);
|
|
|
|
iwl_rfkill_set_hw_state(priv);
|
|
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (iwl_is_rfkill(priv))
|
|
goto out;
|
|
|
|
IWL_DEBUG_INFO("Start UP work done.\n");
|
|
|
|
if (test_bit(STATUS_IN_SUSPEND, &priv->status))
|
|
return 0;
|
|
|
|
/* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
|
|
* mac80211 will not be run successfully. */
|
|
ret = wait_event_interruptible_timeout(priv->wait_command_queue,
|
|
test_bit(STATUS_READY, &priv->status),
|
|
UCODE_READY_TIMEOUT);
|
|
if (!ret) {
|
|
if (!test_bit(STATUS_READY, &priv->status)) {
|
|
IWL_ERR(priv, "START_ALIVE timeout after %dms.\n",
|
|
jiffies_to_msecs(UCODE_READY_TIMEOUT));
|
|
return -ETIMEDOUT;
|
|
}
|
|
}
|
|
|
|
out:
|
|
priv->is_open = 1;
|
|
IWL_DEBUG_MAC80211("leave\n");
|
|
return 0;
|
|
}
|
|
|
|
static void iwl_mac_stop(struct ieee80211_hw *hw)
|
|
{
|
|
struct iwl_priv *priv = hw->priv;
|
|
|
|
IWL_DEBUG_MAC80211("enter\n");
|
|
|
|
if (!priv->is_open) {
|
|
IWL_DEBUG_MAC80211("leave - skip\n");
|
|
return;
|
|
}
|
|
|
|
priv->is_open = 0;
|
|
|
|
if (iwl_is_ready_rf(priv)) {
|
|
/* stop mac, cancel any scan request and clear
|
|
* RXON_FILTER_ASSOC_MSK BIT
|
|
*/
|
|
mutex_lock(&priv->mutex);
|
|
iwl_scan_cancel_timeout(priv, 100);
|
|
mutex_unlock(&priv->mutex);
|
|
}
|
|
|
|
iwl_down(priv);
|
|
|
|
flush_workqueue(priv->workqueue);
|
|
|
|
/* enable interrupts again in order to receive rfkill changes */
|
|
iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
|
|
iwl_enable_interrupts(priv);
|
|
|
|
IWL_DEBUG_MAC80211("leave\n");
|
|
}
|
|
|
|
static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
|
|
{
|
|
struct iwl_priv *priv = hw->priv;
|
|
|
|
IWL_DEBUG_MACDUMP("enter\n");
|
|
|
|
IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
|
|
ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
|
|
|
|
if (iwl_tx_skb(priv, skb))
|
|
dev_kfree_skb_any(skb);
|
|
|
|
IWL_DEBUG_MACDUMP("leave\n");
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
static int iwl_mac_add_interface(struct ieee80211_hw *hw,
|
|
struct ieee80211_if_init_conf *conf)
|
|
{
|
|
struct iwl_priv *priv = hw->priv;
|
|
unsigned long flags;
|
|
|
|
IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
|
|
|
|
if (priv->vif) {
|
|
IWL_DEBUG_MAC80211("leave - vif != NULL\n");
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
priv->vif = conf->vif;
|
|
priv->iw_mode = conf->type;
|
|
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
mutex_lock(&priv->mutex);
|
|
|
|
if (conf->mac_addr) {
|
|
IWL_DEBUG_MAC80211("Set %pM\n", conf->mac_addr);
|
|
memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
|
|
}
|
|
|
|
if (iwl_set_mode(priv, conf->type) == -EAGAIN)
|
|
/* we are not ready, will run again when ready */
|
|
set_bit(STATUS_MODE_PENDING, &priv->status);
|
|
|
|
mutex_unlock(&priv->mutex);
|
|
|
|
IWL_DEBUG_MAC80211("leave\n");
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* iwl_mac_config - mac80211 config callback
|
|
*
|
|
* We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
|
|
* be set inappropriately and the driver currently sets the hardware up to
|
|
* use it whenever needed.
|
|
*/
|
|
static int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
|
|
{
|
|
struct iwl_priv *priv = hw->priv;
|
|
const struct iwl_channel_info *ch_info;
|
|
struct ieee80211_conf *conf = &hw->conf;
|
|
unsigned long flags;
|
|
int ret = 0;
|
|
u16 channel;
|
|
|
|
mutex_lock(&priv->mutex);
|
|
IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
|
|
|
|
priv->current_ht_config.is_ht = conf_is_ht(conf);
|
|
|
|
if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
|
|
IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
|
|
goto out;
|
|
}
|
|
|
|
if (!conf->radio_enabled)
|
|
iwl_radio_kill_sw_disable_radio(priv);
|
|
|
|
if (!iwl_is_ready(priv)) {
|
|
IWL_DEBUG_MAC80211("leave - not ready\n");
|
|
ret = -EIO;
|
|
goto out;
|
|
}
|
|
|
|
if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
|
|
test_bit(STATUS_SCANNING, &priv->status))) {
|
|
IWL_DEBUG_MAC80211("leave - scanning\n");
|
|
mutex_unlock(&priv->mutex);
|
|
return 0;
|
|
}
|
|
|
|
channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
|
|
ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
|
|
if (!is_channel_valid(ch_info)) {
|
|
IWL_DEBUG_MAC80211("leave - invalid channel\n");
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
|
|
!is_channel_ibss(ch_info)) {
|
|
IWL_ERR(priv, "channel %d in band %d not IBSS channel\n",
|
|
conf->channel->hw_value, conf->channel->band);
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
|
|
|
|
/* if we are switching from ht to 2.4 clear flags
|
|
* from any ht related info since 2.4 does not
|
|
* support ht */
|
|
if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
|
|
#ifdef IEEE80211_CONF_CHANNEL_SWITCH
|
|
&& !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
|
|
#endif
|
|
)
|
|
priv->staging_rxon.flags = 0;
|
|
|
|
iwl_set_rxon_channel(priv, conf->channel);
|
|
|
|
iwl_set_flags_for_band(priv, conf->channel->band);
|
|
|
|
/* The list of supported rates and rate mask can be different
|
|
* for each band; since the band may have changed, reset
|
|
* the rate mask to what mac80211 lists */
|
|
iwl_set_rate(priv);
|
|
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
#ifdef IEEE80211_CONF_CHANNEL_SWITCH
|
|
if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
|
|
iwl_hw_channel_switch(priv, conf->channel);
|
|
goto out;
|
|
}
|
|
#endif
|
|
|
|
if (!conf->radio_enabled) {
|
|
IWL_DEBUG_MAC80211("leave - radio disabled\n");
|
|
goto out;
|
|
}
|
|
|
|
if (iwl_is_rfkill(priv)) {
|
|
IWL_DEBUG_MAC80211("leave - RF kill\n");
|
|
ret = -EIO;
|
|
goto out;
|
|
}
|
|
|
|
if (conf->flags & IEEE80211_CONF_PS)
|
|
ret = iwl_power_set_user_mode(priv, IWL_POWER_INDEX_3);
|
|
else
|
|
ret = iwl_power_set_user_mode(priv, IWL_POWER_MODE_CAM);
|
|
if (ret)
|
|
IWL_DEBUG_MAC80211("Error setting power level\n");
|
|
|
|
IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
|
|
priv->tx_power_user_lmt, conf->power_level);
|
|
|
|
iwl_set_tx_power(priv, conf->power_level, false);
|
|
|
|
iwl_set_rate(priv);
|
|
|
|
/* call to ensure that 4965 rx_chain is set properly in monitor mode */
|
|
iwl_set_rxon_chain(priv);
|
|
|
|
if (memcmp(&priv->active_rxon,
|
|
&priv->staging_rxon, sizeof(priv->staging_rxon)))
|
|
iwl_commit_rxon(priv);
|
|
else
|
|
IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
|
|
|
|
IWL_DEBUG_MAC80211("leave\n");
|
|
|
|
out:
|
|
mutex_unlock(&priv->mutex);
|
|
return ret;
|
|
}
|
|
|
|
static void iwl_config_ap(struct iwl_priv *priv)
|
|
{
|
|
int ret = 0;
|
|
unsigned long flags;
|
|
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
|
|
return;
|
|
|
|
/* The following should be done only at AP bring up */
|
|
if (!iwl_is_associated(priv)) {
|
|
|
|
/* RXON - unassoc (to set timing command) */
|
|
priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
|
|
iwl_commit_rxon(priv);
|
|
|
|
/* RXON Timing */
|
|
iwl_setup_rxon_timing(priv);
|
|
ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
|
|
sizeof(priv->rxon_timing), &priv->rxon_timing);
|
|
if (ret)
|
|
IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
|
|
"Attempting to continue.\n");
|
|
|
|
iwl_set_rxon_chain(priv);
|
|
|
|
/* FIXME: what should be the assoc_id for AP? */
|
|
priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
|
|
if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
|
|
priv->staging_rxon.flags |=
|
|
RXON_FLG_SHORT_PREAMBLE_MSK;
|
|
else
|
|
priv->staging_rxon.flags &=
|
|
~RXON_FLG_SHORT_PREAMBLE_MSK;
|
|
|
|
if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
|
|
if (priv->assoc_capability &
|
|
WLAN_CAPABILITY_SHORT_SLOT_TIME)
|
|
priv->staging_rxon.flags |=
|
|
RXON_FLG_SHORT_SLOT_MSK;
|
|
else
|
|
priv->staging_rxon.flags &=
|
|
~RXON_FLG_SHORT_SLOT_MSK;
|
|
|
|
if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
|
|
priv->staging_rxon.flags &=
|
|
~RXON_FLG_SHORT_SLOT_MSK;
|
|
}
|
|
/* restore RXON assoc */
|
|
priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
|
|
iwl_commit_rxon(priv);
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
iwl_activate_qos(priv, 1);
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
|
|
}
|
|
iwl_send_beacon_cmd(priv);
|
|
|
|
/* FIXME - we need to add code here to detect a totally new
|
|
* configuration, reset the AP, unassoc, rxon timing, assoc,
|
|
* clear sta table, add BCAST sta... */
|
|
}
|
|
|
|
|
|
static int iwl_mac_config_interface(struct ieee80211_hw *hw,
|
|
struct ieee80211_vif *vif,
|
|
struct ieee80211_if_conf *conf)
|
|
{
|
|
struct iwl_priv *priv = hw->priv;
|
|
int rc;
|
|
|
|
if (conf == NULL)
|
|
return -EIO;
|
|
|
|
if (priv->vif != vif) {
|
|
IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
|
|
return 0;
|
|
}
|
|
|
|
if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
|
|
conf->changed & IEEE80211_IFCC_BEACON) {
|
|
struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
|
|
if (!beacon)
|
|
return -ENOMEM;
|
|
mutex_lock(&priv->mutex);
|
|
rc = iwl_mac_beacon_update(hw, beacon);
|
|
mutex_unlock(&priv->mutex);
|
|
if (rc)
|
|
return rc;
|
|
}
|
|
|
|
if (!iwl_is_alive(priv))
|
|
return -EAGAIN;
|
|
|
|
mutex_lock(&priv->mutex);
|
|
|
|
if (conf->bssid)
|
|
IWL_DEBUG_MAC80211("bssid: %pM\n", conf->bssid);
|
|
|
|
/*
|
|
* very dubious code was here; the probe filtering flag is never set:
|
|
*
|
|
if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
|
|
!(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
|
|
*/
|
|
|
|
if (priv->iw_mode == NL80211_IFTYPE_AP) {
|
|
if (!conf->bssid) {
|
|
conf->bssid = priv->mac_addr;
|
|
memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
|
|
IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
|
|
conf->bssid);
|
|
}
|
|
if (priv->ibss_beacon)
|
|
dev_kfree_skb(priv->ibss_beacon);
|
|
|
|
priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
|
|
}
|
|
|
|
if (iwl_is_rfkill(priv))
|
|
goto done;
|
|
|
|
if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
|
|
!is_multicast_ether_addr(conf->bssid)) {
|
|
/* If there is currently a HW scan going on in the background
|
|
* then we need to cancel it else the RXON below will fail. */
|
|
if (iwl_scan_cancel_timeout(priv, 100)) {
|
|
IWL_WARN(priv, "Aborted scan still in progress "
|
|
"after 100ms\n");
|
|
IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
|
|
mutex_unlock(&priv->mutex);
|
|
return -EAGAIN;
|
|
}
|
|
memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
|
|
|
|
/* TODO: Audit driver for usage of these members and see
|
|
* if mac80211 deprecates them (priv->bssid looks like it
|
|
* shouldn't be there, but I haven't scanned the IBSS code
|
|
* to verify) - jpk */
|
|
memcpy(priv->bssid, conf->bssid, ETH_ALEN);
|
|
|
|
if (priv->iw_mode == NL80211_IFTYPE_AP)
|
|
iwl_config_ap(priv);
|
|
else {
|
|
rc = iwl_commit_rxon(priv);
|
|
if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
|
|
iwl_rxon_add_station(
|
|
priv, priv->active_rxon.bssid_addr, 1);
|
|
}
|
|
|
|
} else {
|
|
iwl_scan_cancel_timeout(priv, 100);
|
|
priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
|
|
iwl_commit_rxon(priv);
|
|
}
|
|
|
|
done:
|
|
IWL_DEBUG_MAC80211("leave\n");
|
|
mutex_unlock(&priv->mutex);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void iwl_configure_filter(struct ieee80211_hw *hw,
|
|
unsigned int changed_flags,
|
|
unsigned int *total_flags,
|
|
int mc_count, struct dev_addr_list *mc_list)
|
|
{
|
|
struct iwl_priv *priv = hw->priv;
|
|
__le32 *filter_flags = &priv->staging_rxon.filter_flags;
|
|
|
|
IWL_DEBUG_MAC80211("Enter: changed: 0x%x, total: 0x%x\n",
|
|
changed_flags, *total_flags);
|
|
|
|
if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
|
|
if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
|
|
*filter_flags |= RXON_FILTER_PROMISC_MSK;
|
|
else
|
|
*filter_flags &= ~RXON_FILTER_PROMISC_MSK;
|
|
}
|
|
if (changed_flags & FIF_ALLMULTI) {
|
|
if (*total_flags & FIF_ALLMULTI)
|
|
*filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
|
|
else
|
|
*filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
|
|
}
|
|
if (changed_flags & FIF_CONTROL) {
|
|
if (*total_flags & FIF_CONTROL)
|
|
*filter_flags |= RXON_FILTER_CTL2HOST_MSK;
|
|
else
|
|
*filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
|
|
}
|
|
if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
|
|
if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
|
|
*filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
|
|
else
|
|
*filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
|
|
}
|
|
|
|
/* We avoid iwl_commit_rxon here to commit the new filter flags
|
|
* since mac80211 will call ieee80211_hw_config immediately.
|
|
* (mc_list is not supported at this time). Otherwise, we need to
|
|
* queue a background iwl_commit_rxon work.
|
|
*/
|
|
|
|
*total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
|
|
FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
|
|
}
|
|
|
|
static void iwl_mac_remove_interface(struct ieee80211_hw *hw,
|
|
struct ieee80211_if_init_conf *conf)
|
|
{
|
|
struct iwl_priv *priv = hw->priv;
|
|
|
|
IWL_DEBUG_MAC80211("enter\n");
|
|
|
|
mutex_lock(&priv->mutex);
|
|
|
|
if (iwl_is_ready_rf(priv)) {
|
|
iwl_scan_cancel_timeout(priv, 100);
|
|
priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
|
|
iwl_commit_rxon(priv);
|
|
}
|
|
if (priv->vif == conf->vif) {
|
|
priv->vif = NULL;
|
|
memset(priv->bssid, 0, ETH_ALEN);
|
|
}
|
|
mutex_unlock(&priv->mutex);
|
|
|
|
IWL_DEBUG_MAC80211("leave\n");
|
|
|
|
}
|
|
|
|
#define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
|
|
static void iwl_bss_info_changed(struct ieee80211_hw *hw,
|
|
struct ieee80211_vif *vif,
|
|
struct ieee80211_bss_conf *bss_conf,
|
|
u32 changes)
|
|
{
|
|
struct iwl_priv *priv = hw->priv;
|
|
|
|
IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
|
|
|
|
if (changes & BSS_CHANGED_ERP_PREAMBLE) {
|
|
IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
|
|
bss_conf->use_short_preamble);
|
|
if (bss_conf->use_short_preamble)
|
|
priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
|
|
else
|
|
priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
|
|
}
|
|
|
|
if (changes & BSS_CHANGED_ERP_CTS_PROT) {
|
|
IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
|
|
if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
|
|
priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
|
|
else
|
|
priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
|
|
}
|
|
|
|
if (changes & BSS_CHANGED_HT) {
|
|
iwl_ht_conf(priv, bss_conf);
|
|
iwl_set_rxon_chain(priv);
|
|
}
|
|
|
|
if (changes & BSS_CHANGED_ASSOC) {
|
|
IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
|
|
/* This should never happen as this function should
|
|
* never be called from interrupt context. */
|
|
if (WARN_ON_ONCE(in_interrupt()))
|
|
return;
|
|
if (bss_conf->assoc) {
|
|
priv->assoc_id = bss_conf->aid;
|
|
priv->beacon_int = bss_conf->beacon_int;
|
|
priv->power_data.dtim_period = bss_conf->dtim_period;
|
|
priv->timestamp = bss_conf->timestamp;
|
|
priv->assoc_capability = bss_conf->assoc_capability;
|
|
|
|
/* we have just associated, don't start scan too early
|
|
* leave time for EAPOL exchange to complete
|
|
*/
|
|
priv->next_scan_jiffies = jiffies +
|
|
IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
|
|
mutex_lock(&priv->mutex);
|
|
iwl_post_associate(priv);
|
|
mutex_unlock(&priv->mutex);
|
|
} else {
|
|
priv->assoc_id = 0;
|
|
IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
|
|
}
|
|
} else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
|
|
IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
|
|
iwl_send_rxon_assoc(priv);
|
|
}
|
|
|
|
}
|
|
|
|
static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len)
|
|
{
|
|
unsigned long flags;
|
|
struct iwl_priv *priv = hw->priv;
|
|
int ret;
|
|
|
|
IWL_DEBUG_MAC80211("enter\n");
|
|
|
|
mutex_lock(&priv->mutex);
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
|
|
if (!iwl_is_ready_rf(priv)) {
|
|
ret = -EIO;
|
|
IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
|
|
goto out_unlock;
|
|
}
|
|
|
|
/* We don't schedule scan within next_scan_jiffies period.
|
|
* Avoid scanning during possible EAPOL exchange, return
|
|
* success immediately.
|
|
*/
|
|
if (priv->next_scan_jiffies &&
|
|
time_after(priv->next_scan_jiffies, jiffies)) {
|
|
IWL_DEBUG_SCAN("scan rejected: within next scan period\n");
|
|
queue_work(priv->workqueue, &priv->scan_completed);
|
|
ret = 0;
|
|
goto out_unlock;
|
|
}
|
|
|
|
/* if we just finished scan ask for delay */
|
|
if (iwl_is_associated(priv) && priv->last_scan_jiffies &&
|
|
time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN, jiffies)) {
|
|
IWL_DEBUG_SCAN("scan rejected: within previous scan period\n");
|
|
queue_work(priv->workqueue, &priv->scan_completed);
|
|
ret = 0;
|
|
goto out_unlock;
|
|
}
|
|
|
|
if (ssid_len) {
|
|
priv->one_direct_scan = 1;
|
|
priv->direct_ssid_len = min_t(u8, ssid_len, IW_ESSID_MAX_SIZE);
|
|
memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
|
|
} else {
|
|
priv->one_direct_scan = 0;
|
|
}
|
|
|
|
ret = iwl_scan_initiate(priv);
|
|
|
|
IWL_DEBUG_MAC80211("leave\n");
|
|
|
|
out_unlock:
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
mutex_unlock(&priv->mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw,
|
|
struct ieee80211_key_conf *keyconf, const u8 *addr,
|
|
u32 iv32, u16 *phase1key)
|
|
{
|
|
|
|
struct iwl_priv *priv = hw->priv;
|
|
IWL_DEBUG_MAC80211("enter\n");
|
|
|
|
iwl_update_tkip_key(priv, keyconf, addr, iv32, phase1key);
|
|
|
|
IWL_DEBUG_MAC80211("leave\n");
|
|
}
|
|
|
|
static int iwl_mac_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 iwl_priv *priv = hw->priv;
|
|
const u8 *addr;
|
|
int ret;
|
|
u8 sta_id;
|
|
bool is_default_wep_key = false;
|
|
|
|
IWL_DEBUG_MAC80211("enter\n");
|
|
|
|
if (priv->hw_params.sw_crypto) {
|
|
IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
|
|
return -EOPNOTSUPP;
|
|
}
|
|
addr = sta ? sta->addr : iwl_bcast_addr;
|
|
sta_id = iwl_find_station(priv, addr);
|
|
if (sta_id == IWL_INVALID_STATION) {
|
|
IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
|
|
addr);
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
mutex_lock(&priv->mutex);
|
|
iwl_scan_cancel_timeout(priv, 100);
|
|
mutex_unlock(&priv->mutex);
|
|
|
|
/* If we are getting WEP group key and we didn't receive any key mapping
|
|
* so far, we are in legacy wep mode (group key only), otherwise we are
|
|
* in 1X mode.
|
|
* In legacy wep mode, we use another host command to the uCode */
|
|
if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
|
|
priv->iw_mode != NL80211_IFTYPE_AP) {
|
|
if (cmd == SET_KEY)
|
|
is_default_wep_key = !priv->key_mapping_key;
|
|
else
|
|
is_default_wep_key =
|
|
(key->hw_key_idx == HW_KEY_DEFAULT);
|
|
}
|
|
|
|
switch (cmd) {
|
|
case SET_KEY:
|
|
if (is_default_wep_key)
|
|
ret = iwl_set_default_wep_key(priv, key);
|
|
else
|
|
ret = iwl_set_dynamic_key(priv, key, sta_id);
|
|
|
|
IWL_DEBUG_MAC80211("enable hwcrypto key\n");
|
|
break;
|
|
case DISABLE_KEY:
|
|
if (is_default_wep_key)
|
|
ret = iwl_remove_default_wep_key(priv, key);
|
|
else
|
|
ret = iwl_remove_dynamic_key(priv, key, sta_id);
|
|
|
|
IWL_DEBUG_MAC80211("disable hwcrypto key\n");
|
|
break;
|
|
default:
|
|
ret = -EINVAL;
|
|
}
|
|
|
|
IWL_DEBUG_MAC80211("leave\n");
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
|
|
const struct ieee80211_tx_queue_params *params)
|
|
{
|
|
struct iwl_priv *priv = hw->priv;
|
|
unsigned long flags;
|
|
int q;
|
|
|
|
IWL_DEBUG_MAC80211("enter\n");
|
|
|
|
if (!iwl_is_ready_rf(priv)) {
|
|
IWL_DEBUG_MAC80211("leave - RF not ready\n");
|
|
return -EIO;
|
|
}
|
|
|
|
if (queue >= AC_NUM) {
|
|
IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
|
|
return 0;
|
|
}
|
|
|
|
q = AC_NUM - 1 - queue;
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
|
|
priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
|
|
priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
|
|
priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
|
|
priv->qos_data.def_qos_parm.ac[q].edca_txop =
|
|
cpu_to_le16((params->txop * 32));
|
|
|
|
priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
|
|
priv->qos_data.qos_active = 1;
|
|
|
|
if (priv->iw_mode == NL80211_IFTYPE_AP)
|
|
iwl_activate_qos(priv, 1);
|
|
else if (priv->assoc_id && iwl_is_associated(priv))
|
|
iwl_activate_qos(priv, 0);
|
|
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
IWL_DEBUG_MAC80211("leave\n");
|
|
return 0;
|
|
}
|
|
|
|
static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
|
|
enum ieee80211_ampdu_mlme_action action,
|
|
struct ieee80211_sta *sta, u16 tid, u16 *ssn)
|
|
{
|
|
struct iwl_priv *priv = hw->priv;
|
|
|
|
IWL_DEBUG_HT("A-MPDU action on addr %pM tid %d\n",
|
|
sta->addr, tid);
|
|
|
|
if (!(priv->cfg->sku & IWL_SKU_N))
|
|
return -EACCES;
|
|
|
|
switch (action) {
|
|
case IEEE80211_AMPDU_RX_START:
|
|
IWL_DEBUG_HT("start Rx\n");
|
|
return iwl_sta_rx_agg_start(priv, sta->addr, tid, *ssn);
|
|
case IEEE80211_AMPDU_RX_STOP:
|
|
IWL_DEBUG_HT("stop Rx\n");
|
|
return iwl_sta_rx_agg_stop(priv, sta->addr, tid);
|
|
case IEEE80211_AMPDU_TX_START:
|
|
IWL_DEBUG_HT("start Tx\n");
|
|
return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
|
|
case IEEE80211_AMPDU_TX_STOP:
|
|
IWL_DEBUG_HT("stop Tx\n");
|
|
return iwl_tx_agg_stop(priv, sta->addr, tid);
|
|
default:
|
|
IWL_DEBUG_HT("unknown\n");
|
|
return -EINVAL;
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
|
|
struct ieee80211_tx_queue_stats *stats)
|
|
{
|
|
struct iwl_priv *priv = hw->priv;
|
|
int i, avail;
|
|
struct iwl_tx_queue *txq;
|
|
struct iwl_queue *q;
|
|
unsigned long flags;
|
|
|
|
IWL_DEBUG_MAC80211("enter\n");
|
|
|
|
if (!iwl_is_ready_rf(priv)) {
|
|
IWL_DEBUG_MAC80211("leave - RF not ready\n");
|
|
return -EIO;
|
|
}
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
|
|
for (i = 0; i < AC_NUM; i++) {
|
|
txq = &priv->txq[i];
|
|
q = &txq->q;
|
|
avail = iwl_queue_space(q);
|
|
|
|
stats[i].len = q->n_window - avail;
|
|
stats[i].limit = q->n_window - q->high_mark;
|
|
stats[i].count = q->n_window;
|
|
|
|
}
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
IWL_DEBUG_MAC80211("leave\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int iwl_mac_get_stats(struct ieee80211_hw *hw,
|
|
struct ieee80211_low_level_stats *stats)
|
|
{
|
|
struct iwl_priv *priv = hw->priv;
|
|
|
|
priv = hw->priv;
|
|
IWL_DEBUG_MAC80211("enter\n");
|
|
IWL_DEBUG_MAC80211("leave\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
|
|
{
|
|
struct iwl_priv *priv = hw->priv;
|
|
unsigned long flags;
|
|
|
|
mutex_lock(&priv->mutex);
|
|
IWL_DEBUG_MAC80211("enter\n");
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
iwl_reset_qos(priv);
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
priv->assoc_id = 0;
|
|
priv->assoc_capability = 0;
|
|
priv->assoc_station_added = 0;
|
|
|
|
/* new association get rid of ibss beacon skb */
|
|
if (priv->ibss_beacon)
|
|
dev_kfree_skb(priv->ibss_beacon);
|
|
|
|
priv->ibss_beacon = NULL;
|
|
|
|
priv->beacon_int = priv->hw->conf.beacon_int;
|
|
priv->timestamp = 0;
|
|
if ((priv->iw_mode == NL80211_IFTYPE_STATION))
|
|
priv->beacon_int = 0;
|
|
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
if (!iwl_is_ready_rf(priv)) {
|
|
IWL_DEBUG_MAC80211("leave - not ready\n");
|
|
mutex_unlock(&priv->mutex);
|
|
return;
|
|
}
|
|
|
|
/* we are restarting association process
|
|
* clear RXON_FILTER_ASSOC_MSK bit
|
|
*/
|
|
if (priv->iw_mode != NL80211_IFTYPE_AP) {
|
|
iwl_scan_cancel_timeout(priv, 100);
|
|
priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
|
|
iwl_commit_rxon(priv);
|
|
}
|
|
|
|
iwl_power_update_mode(priv, 0);
|
|
|
|
/* Per mac80211.h: This is only used in IBSS mode... */
|
|
if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
|
|
|
|
/* switch to CAM during association period.
|
|
* the ucode will block any association/authentication
|
|
* frome during assiciation period if it can not hear
|
|
* the AP because of PM. the timer enable PM back is
|
|
* association do not complete
|
|
*/
|
|
if (priv->hw->conf.channel->flags & (IEEE80211_CHAN_PASSIVE_SCAN |
|
|
IEEE80211_CHAN_RADAR))
|
|
iwl_power_disable_management(priv, 3000);
|
|
|
|
IWL_DEBUG_MAC80211("leave - not in IBSS\n");
|
|
mutex_unlock(&priv->mutex);
|
|
return;
|
|
}
|
|
|
|
iwl_set_rate(priv);
|
|
|
|
mutex_unlock(&priv->mutex);
|
|
|
|
IWL_DEBUG_MAC80211("leave\n");
|
|
}
|
|
|
|
static int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
|
|
{
|
|
struct iwl_priv *priv = hw->priv;
|
|
unsigned long flags;
|
|
__le64 timestamp;
|
|
|
|
IWL_DEBUG_MAC80211("enter\n");
|
|
|
|
if (!iwl_is_ready_rf(priv)) {
|
|
IWL_DEBUG_MAC80211("leave - RF not ready\n");
|
|
return -EIO;
|
|
}
|
|
|
|
if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
|
|
IWL_DEBUG_MAC80211("leave - not IBSS\n");
|
|
return -EIO;
|
|
}
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
|
|
if (priv->ibss_beacon)
|
|
dev_kfree_skb(priv->ibss_beacon);
|
|
|
|
priv->ibss_beacon = skb;
|
|
|
|
priv->assoc_id = 0;
|
|
timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
|
|
priv->timestamp = le64_to_cpu(timestamp);
|
|
|
|
IWL_DEBUG_MAC80211("leave\n");
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
iwl_reset_qos(priv);
|
|
|
|
iwl_post_associate(priv);
|
|
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* sysfs attributes
|
|
*
|
|
*****************************************************************************/
|
|
|
|
#ifdef CONFIG_IWLWIFI_DEBUG
|
|
|
|
/*
|
|
* The following adds a new attribute to the sysfs representation
|
|
* of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
|
|
* used for controlling the debug level.
|
|
*
|
|
* See the level definitions in iwl for details.
|
|
*/
|
|
|
|
static ssize_t show_debug_level(struct device *d,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct iwl_priv *priv = d->driver_data;
|
|
|
|
return sprintf(buf, "0x%08X\n", priv->debug_level);
|
|
}
|
|
static ssize_t store_debug_level(struct device *d,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct iwl_priv *priv = d->driver_data;
|
|
unsigned long val;
|
|
int ret;
|
|
|
|
ret = strict_strtoul(buf, 0, &val);
|
|
if (ret)
|
|
IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
|
|
else
|
|
priv->debug_level = val;
|
|
|
|
return strnlen(buf, count);
|
|
}
|
|
|
|
static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
|
|
show_debug_level, store_debug_level);
|
|
|
|
|
|
#endif /* CONFIG_IWLWIFI_DEBUG */
|
|
|
|
|
|
static ssize_t show_version(struct device *d,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct iwl_priv *priv = d->driver_data;
|
|
struct iwl_alive_resp *palive = &priv->card_alive;
|
|
ssize_t pos = 0;
|
|
u16 eeprom_ver;
|
|
|
|
if (palive->is_valid)
|
|
pos += sprintf(buf + pos,
|
|
"fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
|
|
"fw type: 0x%01X 0x%01X\n",
|
|
palive->ucode_major, palive->ucode_minor,
|
|
palive->sw_rev[0], palive->sw_rev[1],
|
|
palive->ver_type, palive->ver_subtype);
|
|
else
|
|
pos += sprintf(buf + pos, "fw not loaded\n");
|
|
|
|
if (priv->eeprom) {
|
|
eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
|
|
pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
|
|
eeprom_ver);
|
|
} else {
|
|
pos += sprintf(buf + pos, "EEPROM not initialzed\n");
|
|
}
|
|
|
|
return pos;
|
|
}
|
|
|
|
static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
|
|
|
|
static ssize_t show_temperature(struct device *d,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
|
|
|
|
if (!iwl_is_alive(priv))
|
|
return -EAGAIN;
|
|
|
|
return sprintf(buf, "%d\n", priv->temperature);
|
|
}
|
|
|
|
static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
|
|
|
|
static ssize_t show_tx_power(struct device *d,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
|
|
|
|
if (!iwl_is_ready_rf(priv))
|
|
return sprintf(buf, "off\n");
|
|
else
|
|
return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
|
|
}
|
|
|
|
static ssize_t store_tx_power(struct device *d,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
|
|
unsigned long val;
|
|
int ret;
|
|
|
|
ret = strict_strtoul(buf, 10, &val);
|
|
if (ret)
|
|
IWL_INFO(priv, "%s is not in decimal form.\n", buf);
|
|
else
|
|
iwl_set_tx_power(priv, val, false);
|
|
|
|
return count;
|
|
}
|
|
|
|
static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
|
|
|
|
static ssize_t show_flags(struct device *d,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
|
|
|
|
return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
|
|
}
|
|
|
|
static ssize_t store_flags(struct device *d,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
|
|
unsigned long val;
|
|
u32 flags;
|
|
int ret = strict_strtoul(buf, 0, &val);
|
|
if (ret)
|
|
return ret;
|
|
flags = (u32)val;
|
|
|
|
mutex_lock(&priv->mutex);
|
|
if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
|
|
/* Cancel any currently running scans... */
|
|
if (iwl_scan_cancel_timeout(priv, 100))
|
|
IWL_WARN(priv, "Could not cancel scan.\n");
|
|
else {
|
|
IWL_DEBUG_INFO("Commit rxon.flags = 0x%04X\n", flags);
|
|
priv->staging_rxon.flags = cpu_to_le32(flags);
|
|
iwl_commit_rxon(priv);
|
|
}
|
|
}
|
|
mutex_unlock(&priv->mutex);
|
|
|
|
return count;
|
|
}
|
|
|
|
static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
|
|
|
|
static ssize_t show_filter_flags(struct device *d,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
|
|
|
|
return sprintf(buf, "0x%04X\n",
|
|
le32_to_cpu(priv->active_rxon.filter_flags));
|
|
}
|
|
|
|
static ssize_t store_filter_flags(struct device *d,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
|
|
unsigned long val;
|
|
u32 filter_flags;
|
|
int ret = strict_strtoul(buf, 0, &val);
|
|
if (ret)
|
|
return ret;
|
|
filter_flags = (u32)val;
|
|
|
|
mutex_lock(&priv->mutex);
|
|
if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
|
|
/* Cancel any currently running scans... */
|
|
if (iwl_scan_cancel_timeout(priv, 100))
|
|
IWL_WARN(priv, "Could not cancel scan.\n");
|
|
else {
|
|
IWL_DEBUG_INFO("Committing rxon.filter_flags = "
|
|
"0x%04X\n", filter_flags);
|
|
priv->staging_rxon.filter_flags =
|
|
cpu_to_le32(filter_flags);
|
|
iwl_commit_rxon(priv);
|
|
}
|
|
}
|
|
mutex_unlock(&priv->mutex);
|
|
|
|
return count;
|
|
}
|
|
|
|
static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
|
|
store_filter_flags);
|
|
|
|
static ssize_t store_power_level(struct device *d,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct iwl_priv *priv = dev_get_drvdata(d);
|
|
int ret;
|
|
unsigned long mode;
|
|
|
|
|
|
mutex_lock(&priv->mutex);
|
|
|
|
if (!iwl_is_ready(priv)) {
|
|
ret = -EAGAIN;
|
|
goto out;
|
|
}
|
|
|
|
ret = strict_strtoul(buf, 10, &mode);
|
|
if (ret)
|
|
goto out;
|
|
|
|
ret = iwl_power_set_user_mode(priv, mode);
|
|
if (ret) {
|
|
IWL_DEBUG_MAC80211("failed setting power mode.\n");
|
|
goto out;
|
|
}
|
|
ret = count;
|
|
|
|
out:
|
|
mutex_unlock(&priv->mutex);
|
|
return ret;
|
|
}
|
|
|
|
static ssize_t show_power_level(struct device *d,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct iwl_priv *priv = dev_get_drvdata(d);
|
|
int mode = priv->power_data.user_power_setting;
|
|
int system = priv->power_data.system_power_setting;
|
|
int level = priv->power_data.power_mode;
|
|
char *p = buf;
|
|
|
|
switch (system) {
|
|
case IWL_POWER_SYS_AUTO:
|
|
p += sprintf(p, "SYSTEM:auto");
|
|
break;
|
|
case IWL_POWER_SYS_AC:
|
|
p += sprintf(p, "SYSTEM:ac");
|
|
break;
|
|
case IWL_POWER_SYS_BATTERY:
|
|
p += sprintf(p, "SYSTEM:battery");
|
|
break;
|
|
}
|
|
|
|
p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO) ?
|
|
"fixed" : "auto");
|
|
p += sprintf(p, "\tINDEX:%d", level);
|
|
p += sprintf(p, "\n");
|
|
return p - buf + 1;
|
|
}
|
|
|
|
static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
|
|
store_power_level);
|
|
|
|
|
|
static ssize_t show_statistics(struct device *d,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct iwl_priv *priv = dev_get_drvdata(d);
|
|
u32 size = sizeof(struct iwl_notif_statistics);
|
|
u32 len = 0, ofs = 0;
|
|
u8 *data = (u8 *)&priv->statistics;
|
|
int rc = 0;
|
|
|
|
if (!iwl_is_alive(priv))
|
|
return -EAGAIN;
|
|
|
|
mutex_lock(&priv->mutex);
|
|
rc = iwl_send_statistics_request(priv, 0);
|
|
mutex_unlock(&priv->mutex);
|
|
|
|
if (rc) {
|
|
len = sprintf(buf,
|
|
"Error sending statistics request: 0x%08X\n", rc);
|
|
return len;
|
|
}
|
|
|
|
while (size && (PAGE_SIZE - len)) {
|
|
hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
|
|
PAGE_SIZE - len, 1);
|
|
len = strlen(buf);
|
|
if (PAGE_SIZE - len)
|
|
buf[len++] = '\n';
|
|
|
|
ofs += 16;
|
|
size -= min(size, 16U);
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
|
|
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* driver setup and teardown
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static void iwl_setup_deferred_work(struct iwl_priv *priv)
|
|
{
|
|
priv->workqueue = create_workqueue(DRV_NAME);
|
|
|
|
init_waitqueue_head(&priv->wait_command_queue);
|
|
|
|
INIT_WORK(&priv->up, iwl_bg_up);
|
|
INIT_WORK(&priv->restart, iwl_bg_restart);
|
|
INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
|
|
INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
|
|
INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
|
|
INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
|
|
INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
|
|
INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
|
|
|
|
iwl_setup_scan_deferred_work(priv);
|
|
iwl_setup_power_deferred_work(priv);
|
|
|
|
if (priv->cfg->ops->lib->setup_deferred_work)
|
|
priv->cfg->ops->lib->setup_deferred_work(priv);
|
|
|
|
init_timer(&priv->statistics_periodic);
|
|
priv->statistics_periodic.data = (unsigned long)priv;
|
|
priv->statistics_periodic.function = iwl_bg_statistics_periodic;
|
|
|
|
tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
|
|
iwl_irq_tasklet, (unsigned long)priv);
|
|
}
|
|
|
|
static void iwl_cancel_deferred_work(struct iwl_priv *priv)
|
|
{
|
|
if (priv->cfg->ops->lib->cancel_deferred_work)
|
|
priv->cfg->ops->lib->cancel_deferred_work(priv);
|
|
|
|
cancel_delayed_work_sync(&priv->init_alive_start);
|
|
cancel_delayed_work(&priv->scan_check);
|
|
cancel_delayed_work_sync(&priv->set_power_save);
|
|
cancel_delayed_work(&priv->alive_start);
|
|
cancel_work_sync(&priv->beacon_update);
|
|
del_timer_sync(&priv->statistics_periodic);
|
|
}
|
|
|
|
static struct attribute *iwl_sysfs_entries[] = {
|
|
&dev_attr_flags.attr,
|
|
&dev_attr_filter_flags.attr,
|
|
&dev_attr_power_level.attr,
|
|
&dev_attr_statistics.attr,
|
|
&dev_attr_temperature.attr,
|
|
&dev_attr_tx_power.attr,
|
|
#ifdef CONFIG_IWLWIFI_DEBUG
|
|
&dev_attr_debug_level.attr,
|
|
#endif
|
|
&dev_attr_version.attr,
|
|
|
|
NULL
|
|
};
|
|
|
|
static struct attribute_group iwl_attribute_group = {
|
|
.name = NULL, /* put in device directory */
|
|
.attrs = iwl_sysfs_entries,
|
|
};
|
|
|
|
static struct ieee80211_ops iwl_hw_ops = {
|
|
.tx = iwl_mac_tx,
|
|
.start = iwl_mac_start,
|
|
.stop = iwl_mac_stop,
|
|
.add_interface = iwl_mac_add_interface,
|
|
.remove_interface = iwl_mac_remove_interface,
|
|
.config = iwl_mac_config,
|
|
.config_interface = iwl_mac_config_interface,
|
|
.configure_filter = iwl_configure_filter,
|
|
.set_key = iwl_mac_set_key,
|
|
.update_tkip_key = iwl_mac_update_tkip_key,
|
|
.get_stats = iwl_mac_get_stats,
|
|
.get_tx_stats = iwl_mac_get_tx_stats,
|
|
.conf_tx = iwl_mac_conf_tx,
|
|
.reset_tsf = iwl_mac_reset_tsf,
|
|
.bss_info_changed = iwl_bss_info_changed,
|
|
.ampdu_action = iwl_mac_ampdu_action,
|
|
.hw_scan = iwl_mac_hw_scan
|
|
};
|
|
|
|
static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
|
|
{
|
|
int err = 0;
|
|
struct iwl_priv *priv;
|
|
struct ieee80211_hw *hw;
|
|
struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
|
|
unsigned long flags;
|
|
u16 pci_cmd;
|
|
|
|
/************************
|
|
* 1. Allocating HW data
|
|
************************/
|
|
|
|
/* Disabling hardware scan means that mac80211 will perform scans
|
|
* "the hard way", rather than using device's scan. */
|
|
if (cfg->mod_params->disable_hw_scan) {
|
|
if (cfg->mod_params->debug & IWL_DL_INFO)
|
|
dev_printk(KERN_DEBUG, &(pdev->dev),
|
|
"Disabling hw_scan\n");
|
|
iwl_hw_ops.hw_scan = NULL;
|
|
}
|
|
|
|
hw = iwl_alloc_all(cfg, &iwl_hw_ops);
|
|
if (!hw) {
|
|
err = -ENOMEM;
|
|
goto out;
|
|
}
|
|
priv = hw->priv;
|
|
/* At this point both hw and priv are allocated. */
|
|
|
|
SET_IEEE80211_DEV(hw, &pdev->dev);
|
|
|
|
IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
|
|
priv->cfg = cfg;
|
|
priv->pci_dev = pdev;
|
|
|
|
#ifdef CONFIG_IWLWIFI_DEBUG
|
|
priv->debug_level = priv->cfg->mod_params->debug;
|
|
atomic_set(&priv->restrict_refcnt, 0);
|
|
#endif
|
|
|
|
/**************************
|
|
* 2. Initializing PCI bus
|
|
**************************/
|
|
if (pci_enable_device(pdev)) {
|
|
err = -ENODEV;
|
|
goto out_ieee80211_free_hw;
|
|
}
|
|
|
|
pci_set_master(pdev);
|
|
|
|
err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
|
|
if (!err)
|
|
err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
|
|
if (err) {
|
|
err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
|
|
if (!err)
|
|
err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
|
|
/* both attempts failed: */
|
|
if (err) {
|
|
IWL_WARN(priv, "No suitable DMA available.\n");
|
|
goto out_pci_disable_device;
|
|
}
|
|
}
|
|
|
|
err = pci_request_regions(pdev, DRV_NAME);
|
|
if (err)
|
|
goto out_pci_disable_device;
|
|
|
|
pci_set_drvdata(pdev, priv);
|
|
|
|
|
|
/***********************
|
|
* 3. Read REV register
|
|
***********************/
|
|
priv->hw_base = pci_iomap(pdev, 0, 0);
|
|
if (!priv->hw_base) {
|
|
err = -ENODEV;
|
|
goto out_pci_release_regions;
|
|
}
|
|
|
|
IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
|
|
(unsigned long long) pci_resource_len(pdev, 0));
|
|
IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
|
|
|
|
iwl_hw_detect(priv);
|
|
IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s REV=0x%X\n",
|
|
priv->cfg->name, priv->hw_rev);
|
|
|
|
/* We disable the RETRY_TIMEOUT register (0x41) to keep
|
|
* PCI Tx retries from interfering with C3 CPU state */
|
|
pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
|
|
|
|
/* amp init */
|
|
err = priv->cfg->ops->lib->apm_ops.init(priv);
|
|
if (err < 0) {
|
|
IWL_DEBUG_INFO("Failed to init APMG\n");
|
|
goto out_iounmap;
|
|
}
|
|
/*****************
|
|
* 4. Read EEPROM
|
|
*****************/
|
|
/* Read the EEPROM */
|
|
err = iwl_eeprom_init(priv);
|
|
if (err) {
|
|
IWL_ERR(priv, "Unable to init EEPROM\n");
|
|
goto out_iounmap;
|
|
}
|
|
err = iwl_eeprom_check_version(priv);
|
|
if (err)
|
|
goto out_iounmap;
|
|
|
|
/* extract MAC Address */
|
|
iwl_eeprom_get_mac(priv, priv->mac_addr);
|
|
IWL_DEBUG_INFO("MAC address: %pM\n", priv->mac_addr);
|
|
SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
|
|
|
|
/************************
|
|
* 5. Setup HW constants
|
|
************************/
|
|
if (iwl_set_hw_params(priv)) {
|
|
IWL_ERR(priv, "failed to set hw parameters\n");
|
|
goto out_free_eeprom;
|
|
}
|
|
|
|
/*******************
|
|
* 6. Setup priv
|
|
*******************/
|
|
|
|
err = iwl_init_drv(priv);
|
|
if (err)
|
|
goto out_free_eeprom;
|
|
/* At this point both hw and priv are initialized. */
|
|
|
|
/**********************************
|
|
* 7. Initialize module parameters
|
|
**********************************/
|
|
|
|
/* Disable radio (SW RF KILL) via parameter when loading driver */
|
|
if (priv->cfg->mod_params->disable) {
|
|
set_bit(STATUS_RF_KILL_SW, &priv->status);
|
|
IWL_DEBUG_INFO("Radio disabled.\n");
|
|
}
|
|
|
|
/********************
|
|
* 8. Setup services
|
|
********************/
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
iwl_disable_interrupts(priv);
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
pci_enable_msi(priv->pci_dev);
|
|
|
|
err = request_irq(priv->pci_dev->irq, iwl_isr, IRQF_SHARED,
|
|
DRV_NAME, priv);
|
|
if (err) {
|
|
IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
|
|
goto out_disable_msi;
|
|
}
|
|
err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
|
|
if (err) {
|
|
IWL_ERR(priv, "failed to create sysfs device attributes\n");
|
|
goto out_uninit_drv;
|
|
}
|
|
|
|
iwl_setup_deferred_work(priv);
|
|
iwl_setup_rx_handlers(priv);
|
|
|
|
/**********************************
|
|
* 9. Setup and register mac80211
|
|
**********************************/
|
|
|
|
/* enable interrupts if needed: hw bug w/a */
|
|
pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
|
|
if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
|
|
pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
|
|
pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
|
|
}
|
|
|
|
iwl_enable_interrupts(priv);
|
|
|
|
err = iwl_setup_mac(priv);
|
|
if (err)
|
|
goto out_remove_sysfs;
|
|
|
|
err = iwl_dbgfs_register(priv, DRV_NAME);
|
|
if (err)
|
|
IWL_ERR(priv, "failed to create debugfs files\n");
|
|
|
|
/* If platform's RF_KILL switch is NOT set to KILL */
|
|
if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
|
|
clear_bit(STATUS_RF_KILL_HW, &priv->status);
|
|
else
|
|
set_bit(STATUS_RF_KILL_HW, &priv->status);
|
|
|
|
err = iwl_rfkill_init(priv);
|
|
if (err)
|
|
IWL_ERR(priv, "Unable to initialize RFKILL system. "
|
|
"Ignoring error: %d\n", err);
|
|
else
|
|
iwl_rfkill_set_hw_state(priv);
|
|
|
|
iwl_power_initialize(priv);
|
|
return 0;
|
|
|
|
out_remove_sysfs:
|
|
sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
|
|
out_disable_msi:
|
|
pci_disable_msi(priv->pci_dev);
|
|
pci_disable_device(priv->pci_dev);
|
|
out_uninit_drv:
|
|
iwl_uninit_drv(priv);
|
|
out_free_eeprom:
|
|
iwl_eeprom_free(priv);
|
|
out_iounmap:
|
|
pci_iounmap(pdev, priv->hw_base);
|
|
out_pci_release_regions:
|
|
pci_release_regions(pdev);
|
|
pci_set_drvdata(pdev, NULL);
|
|
out_pci_disable_device:
|
|
pci_disable_device(pdev);
|
|
out_ieee80211_free_hw:
|
|
ieee80211_free_hw(priv->hw);
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
static void __devexit iwl_pci_remove(struct pci_dev *pdev)
|
|
{
|
|
struct iwl_priv *priv = pci_get_drvdata(pdev);
|
|
unsigned long flags;
|
|
|
|
if (!priv)
|
|
return;
|
|
|
|
IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
|
|
|
|
iwl_dbgfs_unregister(priv);
|
|
sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
|
|
|
|
/* ieee80211_unregister_hw call wil cause iwl_mac_stop to
|
|
* to be called and iwl_down since we are removing the device
|
|
* we need to set STATUS_EXIT_PENDING bit.
|
|
*/
|
|
set_bit(STATUS_EXIT_PENDING, &priv->status);
|
|
if (priv->mac80211_registered) {
|
|
ieee80211_unregister_hw(priv->hw);
|
|
priv->mac80211_registered = 0;
|
|
} else {
|
|
iwl_down(priv);
|
|
}
|
|
|
|
/* make sure we flush any pending irq or
|
|
* tasklet for the driver
|
|
*/
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
iwl_disable_interrupts(priv);
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
iwl_synchronize_irq(priv);
|
|
|
|
iwl_rfkill_unregister(priv);
|
|
iwl_dealloc_ucode_pci(priv);
|
|
|
|
if (priv->rxq.bd)
|
|
iwl_rx_queue_free(priv, &priv->rxq);
|
|
iwl_hw_txq_ctx_free(priv);
|
|
|
|
iwl_clear_stations_table(priv);
|
|
iwl_eeprom_free(priv);
|
|
|
|
|
|
/*netif_stop_queue(dev); */
|
|
flush_workqueue(priv->workqueue);
|
|
|
|
/* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
|
|
* priv->workqueue... so we can't take down the workqueue
|
|
* until now... */
|
|
destroy_workqueue(priv->workqueue);
|
|
priv->workqueue = NULL;
|
|
|
|
free_irq(priv->pci_dev->irq, priv);
|
|
pci_disable_msi(priv->pci_dev);
|
|
pci_iounmap(pdev, priv->hw_base);
|
|
pci_release_regions(pdev);
|
|
pci_disable_device(pdev);
|
|
pci_set_drvdata(pdev, NULL);
|
|
|
|
iwl_uninit_drv(priv);
|
|
|
|
if (priv->ibss_beacon)
|
|
dev_kfree_skb(priv->ibss_beacon);
|
|
|
|
ieee80211_free_hw(priv->hw);
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
|
|
static int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
|
|
{
|
|
struct iwl_priv *priv = pci_get_drvdata(pdev);
|
|
|
|
if (priv->is_open) {
|
|
set_bit(STATUS_IN_SUSPEND, &priv->status);
|
|
iwl_mac_stop(priv->hw);
|
|
priv->is_open = 1;
|
|
}
|
|
|
|
pci_save_state(pdev);
|
|
pci_disable_device(pdev);
|
|
pci_set_power_state(pdev, PCI_D3hot);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int iwl_pci_resume(struct pci_dev *pdev)
|
|
{
|
|
struct iwl_priv *priv = pci_get_drvdata(pdev);
|
|
|
|
pci_set_power_state(pdev, PCI_D0);
|
|
pci_enable_device(pdev);
|
|
pci_restore_state(pdev);
|
|
iwl_enable_interrupts(priv);
|
|
|
|
if (priv->is_open)
|
|
iwl_mac_start(priv->hw);
|
|
|
|
clear_bit(STATUS_IN_SUSPEND, &priv->status);
|
|
return 0;
|
|
}
|
|
|
|
#endif /* CONFIG_PM */
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* driver and module entry point
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/* Hardware specific file defines the PCI IDs table for that hardware module */
|
|
static struct pci_device_id iwl_hw_card_ids[] = {
|
|
#ifdef CONFIG_IWL4965
|
|
{IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
|
|
{IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
|
|
#endif /* CONFIG_IWL4965 */
|
|
#ifdef CONFIG_IWL5000
|
|
{IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
|
|
{IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
|
|
{IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
|
|
{IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
|
|
{IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
|
|
{IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
|
|
{IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
|
|
{IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
|
|
{IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
|
|
{IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
|
|
/* 5350 WiFi/WiMax */
|
|
{IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)},
|
|
{IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)},
|
|
{IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)},
|
|
/* 5150 Wifi/WiMax */
|
|
{IWL_PCI_DEVICE(0x423C, PCI_ANY_ID, iwl5150_agn_cfg)},
|
|
{IWL_PCI_DEVICE(0x423D, PCI_ANY_ID, iwl5150_agn_cfg)},
|
|
/* 6000/6050 Series */
|
|
{IWL_PCI_DEVICE(0x0082, 0x1102, iwl6000_2ag_cfg)},
|
|
{IWL_PCI_DEVICE(0x0085, 0x1112, iwl6000_2ag_cfg)},
|
|
{IWL_PCI_DEVICE(0x0082, 0x1122, iwl6000_2ag_cfg)},
|
|
{IWL_PCI_DEVICE(0x422B, PCI_ANY_ID, iwl6000_3agn_cfg)},
|
|
{IWL_PCI_DEVICE(0x4238, PCI_ANY_ID, iwl6000_3agn_cfg)},
|
|
{IWL_PCI_DEVICE(0x0082, PCI_ANY_ID, iwl6000_2agn_cfg)},
|
|
{IWL_PCI_DEVICE(0x0085, PCI_ANY_ID, iwl6000_3agn_cfg)},
|
|
{IWL_PCI_DEVICE(0x0086, PCI_ANY_ID, iwl6050_3agn_cfg)},
|
|
{IWL_PCI_DEVICE(0x0087, PCI_ANY_ID, iwl6050_2agn_cfg)},
|
|
{IWL_PCI_DEVICE(0x0088, PCI_ANY_ID, iwl6050_3agn_cfg)},
|
|
{IWL_PCI_DEVICE(0x0089, PCI_ANY_ID, iwl6050_2agn_cfg)},
|
|
/* 100 Series WiFi */
|
|
{IWL_PCI_DEVICE(0x0083, PCI_ANY_ID, iwl100_bgn_cfg)},
|
|
{IWL_PCI_DEVICE(0x0084, PCI_ANY_ID, iwl100_bgn_cfg)},
|
|
#endif /* CONFIG_IWL5000 */
|
|
|
|
{0}
|
|
};
|
|
MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
|
|
|
|
static struct pci_driver iwl_driver = {
|
|
.name = DRV_NAME,
|
|
.id_table = iwl_hw_card_ids,
|
|
.probe = iwl_pci_probe,
|
|
.remove = __devexit_p(iwl_pci_remove),
|
|
#ifdef CONFIG_PM
|
|
.suspend = iwl_pci_suspend,
|
|
.resume = iwl_pci_resume,
|
|
#endif
|
|
};
|
|
|
|
static int __init iwl_init(void)
|
|
{
|
|
|
|
int ret;
|
|
printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
|
|
printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
|
|
|
|
ret = iwlagn_rate_control_register();
|
|
if (ret) {
|
|
printk(KERN_ERR DRV_NAME
|
|
"Unable to register rate control algorithm: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = pci_register_driver(&iwl_driver);
|
|
if (ret) {
|
|
printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
|
|
goto error_register;
|
|
}
|
|
|
|
return ret;
|
|
|
|
error_register:
|
|
iwlagn_rate_control_unregister();
|
|
return ret;
|
|
}
|
|
|
|
static void __exit iwl_exit(void)
|
|
{
|
|
pci_unregister_driver(&iwl_driver);
|
|
iwlagn_rate_control_unregister();
|
|
}
|
|
|
|
module_exit(iwl_exit);
|
|
module_init(iwl_init);
|