iwl-agn.c 139.8 KB
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/******************************************************************************
 *
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 * Copyright(c) 2003 - 2010 Intel Corporation. All rights reserved.
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 *
 * Portions of this file are derived from the ipw3945 project, as well
 * as portions of the ieee80211 subsystem header files.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
 *
 * The full GNU General Public License is included in this distribution in the
 * file called LICENSE.
 *
 * 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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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

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#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/pci.h>
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#include <linux/pci-aspm.h>
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#include <linux/slab.h>
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#include <linux/dma-mapping.h>
#include <linux/delay.h>
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#include <linux/sched.h>
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#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/wireless.h>
#include <linux/firmware.h>
#include <linux/etherdevice.h>
#include <linux/if_arp.h>

#include <net/mac80211.h>

#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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#include "iwl-agn.h"
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/******************************************************************************
 *
 * module boiler plate
 *
 ******************************************************************************/

/*
 * module name, copyright, version, etc.
 */
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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"
#else
#define VD
#endif

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#define DRV_VERSION     IWLWIFI_VERSION VD
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MODULE_DESCRIPTION(DRV_DESCRIPTION);
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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static int iwlagn_ant_coupling;
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static bool iwlagn_bt_ch_announce = 1;
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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
 * function correctly transitions out of the RXON_ASSOC_MSK state if
 * a HW tune is required based on the RXON structure changes.
 */
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int iwl_commit_rxon(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
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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 *)&ctx->active;
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	int ret;
	bool new_assoc =
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		!!(ctx->staging.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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	ctx->staging.flags |= RXON_FLG_TSF2HOST_MSK;
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	ret = iwl_check_rxon_cmd(priv, ctx);
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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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	/*
	 * receive commit_rxon request
	 * abort any previous channel switch if still in process
	 */
	if (priv->switch_rxon.switch_in_progress &&
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	    (priv->switch_rxon.channel != ctx->staging.channel)) {
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		IWL_DEBUG_11H(priv, "abort channel switch on %d\n",
		      le16_to_cpu(priv->switch_rxon.channel));
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		iwl_chswitch_done(priv, false);
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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, ctx)) {
		ret = iwl_send_rxon_assoc(priv, ctx);
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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, &ctx->staging, sizeof(*active_rxon));
		iwl_print_rx_config_cmd(priv, ctx);
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		return 0;
	}

	/* If we are currently associated and the new config requires
	 * an RXON_ASSOC and the new config wants the associated mask enabled,
	 * we must clear the associated from the active configuration
	 * before we apply the new config */
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	if (iwl_is_associated_ctx(ctx) && new_assoc) {
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		IWL_DEBUG_INFO(priv, "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, ctx->rxon_cmd,
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				       sizeof(struct iwl_rxon_cmd),
				       active_rxon);
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		/* If the mask clearing failed then we set
		 * 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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		iwl_clear_ucode_stations(priv, ctx);
		iwl_restore_stations(priv, ctx);
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		ret = iwl_restore_default_wep_keys(priv, ctx);
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		if (ret) {
			IWL_ERR(priv, "Failed to restore WEP keys (%d)\n", ret);
			return ret;
		}
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	}

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	IWL_DEBUG_INFO(priv, "Sending RXON\n"
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		       "* with%s RXON_FILTER_ASSOC_MSK\n"
		       "* channel = %d\n"
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		       "* bssid = %pM\n",
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		       (new_assoc ? "" : "out"),
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		       le16_to_cpu(ctx->staging.channel),
		       ctx->staging.bssid_addr);
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	iwl_set_rxon_hwcrypto(priv, ctx, !priv->cfg->mod_params->sw_crypto);
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	if (new_assoc) {
		/*
		 * First of all, before setting associated, we need to
		 * send RXON timing so the device knows about the DTIM
		 * period and other timing values
		 */
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		ret = iwl_send_rxon_timing(priv, ctx);
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		if (ret) {
			IWL_ERR(priv, "Error setting RXON timing!\n");
			return ret;
		}
	}

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	if (priv->cfg->ops->hcmd->set_pan_params) {
		ret = priv->cfg->ops->hcmd->set_pan_params(priv);
		if (ret)
			return ret;
	}

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	/* Apply the new configuration
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	 * RXON unassoc clears the station table in uCode so restoration of
	 * stations is needed after it (the RXON command) completes
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	 */
	if (!new_assoc) {
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		ret = iwl_send_cmd_pdu(priv, ctx->rxon_cmd,
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			      sizeof(struct iwl_rxon_cmd), &ctx->staging);
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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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		IWL_DEBUG_INFO(priv, "Return from !new_assoc RXON.\n");
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		memcpy(active_rxon, &ctx->staging, sizeof(*active_rxon));
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		iwl_clear_ucode_stations(priv, ctx);
		iwl_restore_stations(priv, ctx);
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		ret = iwl_restore_default_wep_keys(priv, ctx);
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		if (ret) {
			IWL_ERR(priv, "Failed to restore WEP keys (%d)\n", ret);
			return ret;
		}
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	}

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	priv->start_calib = 0;
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	if (new_assoc) {
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		/* Apply the new configuration
		 * RXON assoc doesn't clear the station table in uCode,
		 */
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		ret = iwl_send_cmd_pdu(priv, ctx->rxon_cmd,
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			      sizeof(struct iwl_rxon_cmd), &ctx->staging);
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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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		memcpy(active_rxon, &ctx->staging, sizeof(*active_rxon));
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	}
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	iwl_print_rx_config_cmd(priv, ctx);
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	iwl_init_sensitivity(priv);

	/* If we issue a new RXON command which required a tune then we must
	 * send a new TXPOWER command or we won't be able to Tx any frames */
	ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
	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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	return 0;
}

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void iwl_update_chain_flags(struct iwl_priv *priv)
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{
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	struct iwl_rxon_context *ctx;
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	if (priv->cfg->ops->hcmd->set_rxon_chain) {
		for_each_context(priv, ctx) {
			priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
			iwlcore_commit_rxon(priv, ctx);
		}
	}
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}

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static void iwl_clear_free_frames(struct iwl_priv *priv)
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{
	struct list_head *element;

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	IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
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		       priv->frames_count);

	while (!list_empty(&priv->free_frames)) {
		element = priv->free_frames.next;
		list_del(element);
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		kfree(list_entry(element, struct iwl_frame, list));
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		priv->frames_count--;
	}

	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);
		priv->frames_count = 0;
	}
}

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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;
	if (list_empty(&priv->free_frames)) {
		frame = kzalloc(sizeof(*frame), GFP_KERNEL);
		if (!frame) {
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			IWL_ERR(priv, "Could not allocate frame!\n");
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			return NULL;
		}

		priv->frames_count++;
		return frame;
	}

	element = priv->free_frames.next;
	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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{
	memset(frame, 0, sizeof(*frame));
	list_add(&frame->list, &priv->free_frames);
}

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static u32 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 (!priv->ibss_beacon)
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		return 0;

	if (priv->ibss_beacon->len > left)
		return 0;

	memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);

	return priv->ibss_beacon->len;
}

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/* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
static void iwl_set_beacon_tim(struct iwl_priv *priv,
		struct iwl_tx_beacon_cmd *tx_beacon_cmd,
		u8 *beacon, u32 frame_size)
{
	u16 tim_idx;
	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;

	/*
	 * The index is relative to frame start but we start looking at the
	 * variable-length part of the beacon.
	 */
	tim_idx = mgmt->u.beacon.variable - beacon;

	/* Parse variable-length elements of beacon to find WLAN_EID_TIM */
	while ((tim_idx < (frame_size - 2)) &&
			(beacon[tim_idx] != WLAN_EID_TIM))
		tim_idx += beacon[tim_idx+1] + 2;

	/* If TIM field was found, set variables */
	if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
		tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
		tx_beacon_cmd->tim_size = beacon[tim_idx+1];
	} else
		IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
}

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static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv *priv,
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				       struct iwl_frame *frame)
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{
	struct iwl_tx_beacon_cmd *tx_beacon_cmd;
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	u32 frame_size;
	u32 rate_flags;
	u32 rate;
	/*
	 * We have to set up the TX command, the TX Beacon command, and the
	 * beacon contents.
	 */
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	lockdep_assert_held(&priv->mutex);

	if (!priv->beacon_ctx) {
		IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
		return -EINVAL;
	}

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	/* Initialize memory */
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	tx_beacon_cmd = &frame->u.beacon;
	memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));

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	/* Set up TX beacon contents */
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	frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
				sizeof(frame->u) - sizeof(*tx_beacon_cmd));
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	if (WARN_ON_ONCE(frame_size > MAX_MPDU_SIZE))
		return 0;
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	/* Set up TX command fields */
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	tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
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	tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
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	tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
	tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
		TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
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	/* Set up TX beacon command fields */
	iwl_set_beacon_tim(priv, tx_beacon_cmd, (u8 *)tx_beacon_cmd->frame,
			frame_size);
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	/* Set up packet rate and flags */
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	rate = iwl_rate_get_lowest_plcp(priv, priv->beacon_ctx);
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	priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
					      priv->hw_params.valid_tx_ant);
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	rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
	if ((rate >= IWL_FIRST_CCK_RATE) && (rate <= IWL_LAST_CCK_RATE))
		rate_flags |= RATE_MCS_CCK_MSK;
	tx_beacon_cmd->tx.rate_n_flags = iwl_hw_set_rate_n_flags(rate,
			rate_flags);
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	return sizeof(*tx_beacon_cmd) + frame_size;
}
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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;
	int rc;

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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");
		return -ENOMEM;
	}

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	frame_size = iwl_hw_get_beacon_cmd(priv, frame);
	if (!frame_size) {
		IWL_ERR(priv, "Error configuring the beacon command\n");
		iwl_free_frame(priv, frame);
		return -EINVAL;
	}
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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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static inline dma_addr_t iwl_tfd_tb_get_addr(struct iwl_tfd *tfd, u8 idx)
{
	struct iwl_tfd_tb *tb = &tfd->tbs[idx];

	dma_addr_t addr = get_unaligned_le32(&tb->lo);
	if (sizeof(dma_addr_t) > sizeof(u32))
		addr |=
		((dma_addr_t)(le16_to_cpu(tb->hi_n_len) & 0xF) << 16) << 16;

	return addr;
}

static inline u16 iwl_tfd_tb_get_len(struct iwl_tfd *tfd, u8 idx)
{
	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)
{
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	struct iwl_tfd *tfd_tmp = (struct iwl_tfd *)txq->tfds;
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	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,
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				dma_unmap_addr(&txq->meta[index], mapping),
				dma_unmap_len(&txq->meta[index], len),
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				PCI_DMA_BIDIRECTIONAL);
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	/* Unmap chunks, if any. */
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	for (i = 1; i < num_tbs; i++)
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		pci_unmap_single(dev, iwl_tfd_tb_get_addr(tfd, i),
				iwl_tfd_tb_get_len(tfd, i), PCI_DMA_TODEVICE);

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	/* free SKB */
	if (txq->txb) {
		struct sk_buff *skb;
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		skb = txq->txb[txq->q.read_ptr].skb;
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		/* can be called from irqs-disabled context */
		if (skb) {
			dev_kfree_skb_any(skb);
			txq->txb[txq->q.read_ptr].skb = NULL;
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		}
	}
}

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;
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	struct iwl_tfd *tfd, *tfd_tmp;
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	u32 num_tbs;

	q = &txq->q;
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	tfd_tmp = (struct iwl_tfd *)txq->tfds;
	tfd = &tfd_tmp[q->write_ptr];
540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562

	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;
}

563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581
/*
 * 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 txq_id = txq->q.id;

	/* Circular buffer (TFD queue in DRAM) physical base address */
	iwl_write_direct32(priv, FH_MEM_CBBC_QUEUE(txq_id),
			     txq->q.dma_addr >> 8);

	return 0;
}

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/******************************************************************************
 *
 * Generic RX handler implementations
 *
 ******************************************************************************/
587 588
static void iwl_rx_reply_alive(struct iwl_priv *priv,
				struct iwl_rx_mem_buffer *rxb)
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{
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	struct iwl_rx_packet *pkt = rxb_addr(rxb);
591
	struct iwl_alive_resp *palive;
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	struct delayed_work *pwork;

	palive = &pkt->u.alive_frame;

596
	IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
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		       "0x%01X 0x%01X\n",
		       palive->is_valid, palive->ver_type,
		       palive->ver_subtype);

	if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
602
		IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
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		memcpy(&priv->card_alive_init,
		       &pkt->u.alive_frame,
605
		       sizeof(struct iwl_init_alive_resp));
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		pwork = &priv->init_alive_start;
	} else {
608
		IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
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		memcpy(&priv->card_alive, &pkt->u.alive_frame,
610
		       sizeof(struct iwl_alive_resp));
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		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
620
		IWL_WARN(priv, "uCode did not respond OK.\n");
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}

623
static void iwl_bg_beacon_update(struct work_struct *work)
Z
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{
625 626
	struct iwl_priv *priv =
		container_of(work, struct iwl_priv, beacon_update);
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	struct sk_buff *beacon;

629 630 631 632 633
	mutex_lock(&priv->mutex);
	if (!priv->beacon_ctx) {
		IWL_ERR(priv, "updating beacon w/o beacon context!\n");
		goto out;
	}
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635 636 637 638 639 640 641 642 643 644
	if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
		/*
		 * The ucode will send beacon notifications even in
		 * IBSS mode, but we don't want to process them. But
		 * we need to defer the type check to here due to
		 * requiring locking around the beacon_ctx access.
		 */
		goto out;
	}

645 646
	/* Pull updated AP beacon from mac80211. will fail if not in AP mode */
	beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
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	if (!beacon) {
648
		IWL_ERR(priv, "update beacon failed\n");
649
		goto out;
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	}

	/* new beacon skb is allocated every time; dispose previous.*/
	if (priv->ibss_beacon)
		dev_kfree_skb(priv->ibss_beacon);

	priv->ibss_beacon = beacon;

658
	iwl_send_beacon_cmd(priv);
659 660
 out:
	mutex_unlock(&priv->mutex);
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}

663 664 665 666 667 668 669 670 671 672 673 674 675 676
static void iwl_bg_bt_runtime_config(struct work_struct *work)
{
	struct iwl_priv *priv =
		container_of(work, struct iwl_priv, bt_runtime_config);

	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;
	priv->cfg->ops->hcmd->send_bt_config(priv);
}

677 678 679 680
static void iwl_bg_bt_full_concurrency(struct work_struct *work)
{
	struct iwl_priv *priv =
		container_of(work, struct iwl_priv, bt_full_concurrency);
681
	struct iwl_rxon_context *ctx;
682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697

	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_DEBUG_INFO(priv, "BT coex in %s mode\n",
		       priv->bt_full_concurrent ?
		       "full concurrency" : "3-wire");

	/*
	 * LQ & RXON updated cmds must be sent before BT Config cmd
	 * to avoid 3-wire collisions
	 */
698 699 700 701 702 703 704
	mutex_lock(&priv->mutex);
	for_each_context(priv, ctx) {
		if (priv->cfg->ops->hcmd->set_rxon_chain)
			priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
		iwlcore_commit_rxon(priv, ctx);
	}
	mutex_unlock(&priv->mutex);
705 706 707 708

	priv->cfg->ops->hcmd->send_bt_config(priv);
}

709
/**
710
 * iwl_bg_statistics_periodic - Timer callback to queue statistics
711 712 713 714 715 716 717 718
 *
 * 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.
 */
719
static void iwl_bg_statistics_periodic(unsigned long data)
720 721 722 723 724 725
{
	struct iwl_priv *priv = (struct iwl_priv *)data;

	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
		return;

726 727 728 729
	/* dont send host command if rf-kill is on */
	if (!iwl_is_ready_rf(priv))
		return;

730
	iwl_send_statistics_request(priv, CMD_ASYNC, false);
731 732
}

733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779

static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
					u32 start_idx, u32 num_events,
					u32 mode)
{
	u32 i;
	u32 ptr;        /* SRAM byte address of log data */
	u32 ev, time, data; /* event log data */
	unsigned long reg_flags;

	if (mode == 0)
		ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
	else
		ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));

	/* Make sure device is powered up for SRAM reads */
	spin_lock_irqsave(&priv->reg_lock, reg_flags);
	if (iwl_grab_nic_access(priv)) {
		spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
		return;
	}

	/* Set starting address; reads will auto-increment */
	_iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr);
	rmb();

	/*
	 * "time" is actually "data" for mode 0 (no timestamp).
	 * place event id # at far right for easier visual parsing.
	 */
	for (i = 0; i < num_events; i++) {
		ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
		time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
		if (mode == 0) {
			trace_iwlwifi_dev_ucode_cont_event(priv,
							0, time, ev);
		} else {
			data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
			trace_iwlwifi_dev_ucode_cont_event(priv,
						time, data, ev);
		}
	}
	/* Allow device to power down */
	iwl_release_nic_access(priv);
	spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
}

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780
static void iwl_continuous_event_trace(struct iwl_priv *priv)
781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857
{
	u32 capacity;   /* event log capacity in # entries */
	u32 base;       /* SRAM byte address of event log header */
	u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
	u32 num_wraps;  /* # times uCode wrapped to top of log */
	u32 next_entry; /* index of next entry to be written by uCode */

	if (priv->ucode_type == UCODE_INIT)
		base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
	else
		base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
	if (priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
		capacity = iwl_read_targ_mem(priv, base);
		num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
		mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
		next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
	} else
		return;

	if (num_wraps == priv->event_log.num_wraps) {
		iwl_print_cont_event_trace(priv,
				       base, priv->event_log.next_entry,
				       next_entry - priv->event_log.next_entry,
				       mode);
		priv->event_log.non_wraps_count++;
	} else {
		if ((num_wraps - priv->event_log.num_wraps) > 1)
			priv->event_log.wraps_more_count++;
		else
			priv->event_log.wraps_once_count++;
		trace_iwlwifi_dev_ucode_wrap_event(priv,
				num_wraps - priv->event_log.num_wraps,
				next_entry, priv->event_log.next_entry);
		if (next_entry < priv->event_log.next_entry) {
			iwl_print_cont_event_trace(priv, base,
			       priv->event_log.next_entry,
			       capacity - priv->event_log.next_entry,
			       mode);

			iwl_print_cont_event_trace(priv, base, 0,
				next_entry, mode);
		} else {
			iwl_print_cont_event_trace(priv, base,
			       next_entry, capacity - next_entry,
			       mode);

			iwl_print_cont_event_trace(priv, base, 0,
				next_entry, mode);
		}
	}
	priv->event_log.num_wraps = num_wraps;
	priv->event_log.next_entry = next_entry;
}

/**
 * iwl_bg_ucode_trace - Timer callback to log ucode event
 *
 * The timer is continually set to execute every
 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
 * this function is to perform continuous uCode event logging operation
 * if enabled
 */
static void iwl_bg_ucode_trace(unsigned long data)
{
	struct iwl_priv *priv = (struct iwl_priv *)data;

	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
		return;

	if (priv->event_log.ucode_trace) {
		iwl_continuous_event_trace(priv);
		/* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
		mod_timer(&priv->ucode_trace,
			 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
	}
}

858
static void iwl_rx_beacon_notif(struct iwl_priv *priv,
859
				struct iwl_rx_mem_buffer *rxb)
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860
{
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861
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
862 863
	struct iwl4965_beacon_notif *beacon =
		(struct iwl4965_beacon_notif *)pkt->u.raw;
864
#ifdef CONFIG_IWLWIFI_DEBUG
865
	u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
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866

867
	IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
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868
		"tsf %d %d rate %d\n",
869
		le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
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870 871 872 873 874 875
		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

876 877
	priv->ibss_manager = le32_to_cpu(beacon->ibss_mgr_status);

878
	if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
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879 880 881 882 883
		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 */
884
static void iwl_rx_card_state_notif(struct iwl_priv *priv,
885
				    struct iwl_rx_mem_buffer *rxb)
Z
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886
{
Z
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887
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
Z
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888 889 890
	u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
	unsigned long status = priv->status;

W
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891
	IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s CT:%s\n",
Z
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892
			  (flags & HW_CARD_DISABLED) ? "Kill" : "On",
W
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893 894 895
			  (flags & SW_CARD_DISABLED) ? "Kill" : "On",
			  (flags & CT_CARD_DISABLED) ?
			  "Reached" : "Not reached");
Z
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896 897

	if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
W
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898
		     CT_CARD_DISABLED)) {
Z
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899

900
		iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
Z
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901 902
			    CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);

M
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903 904
		iwl_write_direct32(priv, HBUS_TARG_MBX_C,
					HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
Z
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905 906

		if (!(flags & RXON_CARD_DISABLED)) {
907
			iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
Z
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908
				    CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
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Mohamed Abbas 已提交
909
			iwl_write_direct32(priv, HBUS_TARG_MBX_C,
Z
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910 911
					HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
		}
W
Wey-Yi Guy 已提交
912
		if (flags & CT_CARD_DISABLED)
913
			iwl_tt_enter_ct_kill(priv);
Z
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914
	}
W
Wey-Yi Guy 已提交
915
	if (!(flags & CT_CARD_DISABLED))
916
		iwl_tt_exit_ct_kill(priv);
Z
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917 918 919 920 921 922 923 924

	if (flags & HW_CARD_DISABLED)
		set_bit(STATUS_RF_KILL_HW, &priv->status);
	else
		clear_bit(STATUS_RF_KILL_HW, &priv->status);


	if (!(flags & RXON_CARD_DISABLED))
925
		iwl_scan_cancel(priv);
Z
Zhu Yi 已提交
926 927

	if ((test_bit(STATUS_RF_KILL_HW, &status) !=
J
Johannes Berg 已提交
928 929 930
	     test_bit(STATUS_RF_KILL_HW, &priv->status)))
		wiphy_rfkill_set_hw_state(priv->hw->wiphy,
			test_bit(STATUS_RF_KILL_HW, &priv->status));
Z
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931 932 933 934
	else
		wake_up_interruptible(&priv->wait_command_queue);
}

935
int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
936 937
{
	if (src == IWL_PWR_SRC_VAUX) {
938
		if (pci_pme_capable(priv->pci_dev, PCI_D3cold))
939 940 941 942 943 944 945 946 947
			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);
	}

M
Mohamed Abbas 已提交
948
	return 0;
949 950
}

951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968
static void iwl_bg_tx_flush(struct work_struct *work)
{
	struct iwl_priv *priv =
		container_of(work, struct iwl_priv, tx_flush);

	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
		return;

	/* do nothing if rf-kill is on */
	if (!iwl_is_ready_rf(priv))
		return;

	if (priv->cfg->ops->lib->txfifo_flush) {
		IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
		iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
	}
}

Z
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969
/**
970
 * iwl_setup_rx_handlers - Initialize Rx handler callbacks
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971 972 973 974 975 976 977
 *
 * 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.
 */
978
static void iwl_setup_rx_handlers(struct iwl_priv *priv)
Z
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979
{
980
	priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
981 982
	priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
	priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
983 984
	priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
			iwl_rx_spectrum_measure_notif;
985
	priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
Z
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986
	priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
987 988
	    iwl_rx_pm_debug_statistics_notif;
	priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
Z
Zhu Yi 已提交
989

990 991 992 993
	/*
	 * 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.
Z
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994
	 */
995
	priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_reply_statistics;
996
	priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
997 998 999

	iwl_setup_rx_scan_handlers(priv);

1000
	/* status change handler */
1001
	priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
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1002

1003 1004
	priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
	    iwl_rx_missed_beacon_notif;
1005
	/* Rx handlers */
1006 1007
	priv->rx_handlers[REPLY_RX_PHY_CMD] = iwlagn_rx_reply_rx_phy;
	priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwlagn_rx_reply_rx;
1008
	/* block ack */
1009
	priv->rx_handlers[REPLY_COMPRESSED_BA] = iwlagn_rx_reply_compressed_ba;
1010
	/* Set up hardware specific Rx handlers */
1011
	priv->cfg->ops->lib->rx_handler_setup(priv);
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1012 1013 1014
}

/**
1015
 * iwl_rx_handle - Main entry function for receiving responses from uCode
Z
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1016 1017 1018 1019 1020
 *
 * Uses the priv->rx_handlers callback function array to invoke
 * the appropriate handlers, including command responses,
 * frame-received notifications, and other notifications.
 */
1021
void iwl_rx_handle(struct iwl_priv *priv)
Z
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1022
{
1023
	struct iwl_rx_mem_buffer *rxb;
1024
	struct iwl_rx_packet *pkt;
1025
	struct iwl_rx_queue *rxq = &priv->rxq;
Z
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1026 1027 1028
	u32 r, i;
	int reclaim;
	unsigned long flags;
1029
	u8 fill_rx = 0;
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Mohamed Abbas 已提交
1030
	u32 count = 8;
1031
	int total_empty;
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1032

1033 1034
	/* uCode's read index (stored in shared DRAM) indicates the last Rx
	 * buffer that the driver may process (last buffer filled by ucode). */
1035
	r = le16_to_cpu(rxq->rb_stts->closed_rb_num) &  0x0FFF;
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	i = rxq->read;

	/* Rx interrupt, but nothing sent from uCode */
	if (i == r)
1040
		IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
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1042
	/* calculate total frames need to be restock after handling RX */
1043
	total_empty = r - rxq->write_actual;
1044 1045 1046 1047
	if (total_empty < 0)
		total_empty += RX_QUEUE_SIZE;

	if (total_empty > (RX_QUEUE_SIZE / 2))
1048 1049
		fill_rx = 1;

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	while (i != r) {
J
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		int len;

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		rxb = rxq->queue[i];

1055
		/* If an RXB doesn't have a Rx queue slot associated with it,
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		 * then a bug has been introduced in the queue refilling
		 * routines -- catch it here */
		BUG_ON(rxb == NULL);

		rxq->queue[i] = NULL;

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		pci_unmap_page(priv->pci_dev, rxb->page_dma,
			       PAGE_SIZE << priv->hw_params.rx_page_order,
			       PCI_DMA_FROMDEVICE);
		pkt = rxb_addr(rxb);
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		len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
		len += sizeof(u32); /* account for status word */
		trace_iwlwifi_dev_rx(priv, pkt, len);
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		/* 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) &&
1079
			(pkt->hdr.cmd != REPLY_RX) &&
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			(pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
1081
			(pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
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			(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
1087
		 *   rx_handlers table.  See iwl_setup_rx_handlers() */
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		if (priv->rx_handlers[pkt->hdr.cmd]) {
1089
			IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r,
1090
				i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1091
			priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
1092
			priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
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		} else {
			/* No handling needed */
1095
			IWL_DEBUG_RX(priv,
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				"r %d i %d No handler needed for %s, 0x%02x\n",
				r, i, get_cmd_string(pkt->hdr.cmd),
				pkt->hdr.cmd);
		}

1101 1102 1103 1104 1105 1106 1107
		/*
		 * XXX: After here, we should always check rxb->page
		 * against NULL before touching it or its virtual
		 * memory (pkt). Because some rx_handler might have
		 * already taken or freed the pages.
		 */

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		if (reclaim) {
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			/* Invoke any callbacks, transfer the buffer to caller,
			 * and fire off the (possibly) blocking iwl_send_cmd()
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			 * as we reclaim the driver command queue */
1112
			if (rxb->page)
1113
				iwl_tx_cmd_complete(priv, rxb);
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			else
1115
				IWL_WARN(priv, "Claim null rxb?\n");
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		}

1118 1119 1120 1121
		/* Reuse the page if possible. For notification packets and
		 * SKBs that fail to Rx correctly, add them back into the
		 * rx_free list for reuse later. */
		spin_lock_irqsave(&rxq->lock, flags);
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		if (rxb->page != NULL) {
1123 1124 1125 1126 1127 1128 1129
			rxb->page_dma = pci_map_page(priv->pci_dev, rxb->page,
				0, PAGE_SIZE << priv->hw_params.rx_page_order,
				PCI_DMA_FROMDEVICE);
			list_add_tail(&rxb->list, &rxq->rx_free);
			rxq->free_count++;
		} else
			list_add_tail(&rxb->list, &rxq->rx_used);
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		spin_unlock_irqrestore(&rxq->lock, flags);
1132

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		i = (i + 1) & RX_QUEUE_MASK;
1134 1135 1136 1137 1138
		/* If there are a lot of unused frames,
		 * restock the Rx queue so ucode wont assert. */
		if (fill_rx) {
			count++;
			if (count >= 8) {
1139
				rxq->read = i;
1140
				iwlagn_rx_replenish_now(priv);
1141 1142 1143
				count = 0;
			}
		}
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	}

	/* Backtrack one entry */
1147
	rxq->read = i;
1148
	if (fill_rx)
1149
		iwlagn_rx_replenish_now(priv);
1150
	else
1151
		iwlagn_rx_queue_restock(priv);
1152 1153
}

1154 1155 1156
/* call this function to flush any scheduled tasklet */
static inline void iwl_synchronize_irq(struct iwl_priv *priv)
{
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	/* wait to make sure we flush pending tasklet*/
1158 1159 1160 1161
	synchronize_irq(priv->pci_dev->irq);
	tasklet_kill(&priv->irq_tasklet);
}

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static void iwl_irq_tasklet_legacy(struct iwl_priv *priv)
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{
	u32 inta, handled = 0;
	u32 inta_fh;
	unsigned long flags;
1167
	u32 i;
1168
#ifdef CONFIG_IWLWIFI_DEBUG
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	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. */
1177 1178
	inta = iwl_read32(priv, CSR_INT);
	iwl_write32(priv, CSR_INT, inta);
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	/* 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. */
1183 1184
	inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
	iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
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1186
#ifdef CONFIG_IWLWIFI_DEBUG
1187
	if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1188
		/* just for debug */
1189
		inta_mask = iwl_read32(priv, CSR_INT_MASK);
1190
		IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
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			      inta, inta_mask, inta_fh);
	}
#endif

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	spin_unlock_irqrestore(&priv->lock, flags);

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	/* 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. */
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1201
	if (inta_fh & CSR49_FH_INT_RX_MASK)
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1202
		inta |= CSR_INT_BIT_FH_RX;
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1203
	if (inta_fh & CSR49_FH_INT_TX_MASK)
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1204 1205 1206 1207
		inta |= CSR_INT_BIT_FH_TX;

	/* Now service all interrupt bits discovered above. */
	if (inta & CSR_INT_BIT_HW_ERR) {
1208
		IWL_ERR(priv, "Hardware error detected.  Restarting.\n");
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1209 1210

		/* Tell the device to stop sending interrupts */
1211
		iwl_disable_interrupts(priv);
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1212

1213
		priv->isr_stats.hw++;
1214
		iwl_irq_handle_error(priv);
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1215 1216 1217 1218 1219 1220

		handled |= CSR_INT_BIT_HW_ERR;

		return;
	}

1221
#ifdef CONFIG_IWLWIFI_DEBUG
1222
	if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
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		/* NIC fires this, but we don't use it, redundant with WAKEUP */
1224
		if (inta & CSR_INT_BIT_SCD) {
1225
			IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1226
				      "the frame/frames.\n");
1227 1228
			priv->isr_stats.sch++;
		}
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		/* Alive notification via Rx interrupt will do the real work */
1231
		if (inta & CSR_INT_BIT_ALIVE) {
1232
			IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1233 1234
			priv->isr_stats.alive++;
		}
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1235 1236 1237
	}
#endif
	/* Safely ignore these bits for debug checks below */
1238
	inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
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1240
	/* HW RF KILL switch toggled */
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1241 1242
	if (inta & CSR_INT_BIT_RF_KILL) {
		int hw_rf_kill = 0;
1243
		if (!(iwl_read32(priv, CSR_GP_CNTRL) &
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1244 1245 1246
				CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
			hw_rf_kill = 1;

1247
		IWL_WARN(priv, "RF_KILL bit toggled to %s.\n",
1248
				hw_rf_kill ? "disable radio" : "enable radio");
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1250 1251
		priv->isr_stats.rfkill++;

1252
		/* driver only loads ucode once setting the interface up.
1253 1254 1255
		 * 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.
1256
		 */
1257 1258 1259 1260 1261
		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);
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1262
			wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill);
1263
		}
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1264 1265 1266 1267

		handled |= CSR_INT_BIT_RF_KILL;
	}

1268
	/* Chip got too hot and stopped itself */
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1269
	if (inta & CSR_INT_BIT_CT_KILL) {
1270
		IWL_ERR(priv, "Microcode CT kill error detected.\n");
1271
		priv->isr_stats.ctkill++;
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1272 1273 1274 1275 1276
		handled |= CSR_INT_BIT_CT_KILL;
	}

	/* Error detected by uCode */
	if (inta & CSR_INT_BIT_SW_ERR) {
1277 1278
		IWL_ERR(priv, "Microcode SW error detected. "
			" Restarting 0x%X.\n", inta);
1279 1280
		priv->isr_stats.sw++;
		priv->isr_stats.sw_err = inta;
1281
		iwl_irq_handle_error(priv);
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1282 1283 1284
		handled |= CSR_INT_BIT_SW_ERR;
	}

1285 1286 1287 1288 1289
	/*
	 * uCode wakes up after power-down sleep.
	 * Tell device about any new tx or host commands enqueued,
	 * and about any Rx buffers made available while asleep.
	 */
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1290
	if (inta & CSR_INT_BIT_WAKEUP) {
1291
		IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1292
		iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1293 1294
		for (i = 0; i < priv->hw_params.max_txq_num; i++)
			iwl_txq_update_write_ptr(priv, &priv->txq[i]);
1295
		priv->isr_stats.wakeup++;
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		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)) {
1303
		iwl_rx_handle(priv);
1304
		priv->isr_stats.rx++;
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		handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
	}

B
Ben Cahill 已提交
1308
	/* This "Tx" DMA channel is used only for loading uCode */
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1309
	if (inta & CSR_INT_BIT_FH_TX) {
B
Ben Cahill 已提交
1310
		IWL_DEBUG_ISR(priv, "uCode load interrupt\n");
1311
		priv->isr_stats.tx++;
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1312
		handled |= CSR_INT_BIT_FH_TX;
B
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1313
		/* Wake up uCode load routine, now that load is complete */
1314 1315
		priv->ucode_write_complete = 1;
		wake_up_interruptible(&priv->wait_command_queue);
Z
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1316 1317
	}

1318
	if (inta & ~handled) {
1319
		IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1320 1321
		priv->isr_stats.unhandled++;
	}
Z
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1322

1323
	if (inta & ~(priv->inta_mask)) {
1324
		IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1325
			 inta & ~priv->inta_mask);
1326
		IWL_WARN(priv, "   with FH_INT = 0x%08x\n", inta_fh);
Z
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1327 1328 1329
	}

	/* Re-enable all interrupts */
1330 1331
	/* only Re-enable if diabled by irq */
	if (test_bit(STATUS_INT_ENABLED, &priv->status))
1332
		iwl_enable_interrupts(priv);
Z
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1333

1334
#ifdef CONFIG_IWLWIFI_DEBUG
1335
	if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1336 1337 1338
		inta = iwl_read32(priv, CSR_INT);
		inta_mask = iwl_read32(priv, CSR_INT_MASK);
		inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1339
		IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
Z
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1340 1341 1342 1343 1344
			"flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
	}
#endif
}

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1345 1346 1347 1348 1349 1350
/* tasklet for iwlagn interrupt */
static void iwl_irq_tasklet(struct iwl_priv *priv)
{
	u32 inta = 0;
	u32 handled = 0;
	unsigned long flags;
1351
	u32 i;
M
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1352 1353 1354 1355 1356 1357 1358 1359 1360
#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,
	 */
1361 1362 1363 1364 1365 1366 1367 1368
	/* There is a hardware bug in the interrupt mask function that some
	 * interrupts (i.e. CSR_INT_BIT_SCD) can still be generated even if
	 * they are disabled in the CSR_INT_MASK register. Furthermore the
	 * ICT interrupt handling mechanism has another bug that might cause
	 * these unmasked interrupts fail to be detected. We workaround the
	 * hardware bugs here by ACKing all the possible interrupts so that
	 * interrupt coalescing can still be achieved.
	 */
1369
	iwl_write32(priv, CSR_INT, priv->_agn.inta | ~priv->inta_mask);
M
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1370

1371
	inta = priv->_agn.inta;
M
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1372 1373

#ifdef CONFIG_IWLWIFI_DEBUG
1374
	if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
M
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1375 1376 1377 1378 1379 1380
		/* just for debug */
		inta_mask = iwl_read32(priv, CSR_INT_MASK);
		IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x\n ",
				inta, inta_mask);
	}
#endif
Z
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	spin_unlock_irqrestore(&priv->lock, flags);

1384 1385
	/* saved interrupt in inta variable now we can reset priv->_agn.inta */
	priv->_agn.inta = 0;
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	/* Now service all interrupt bits discovered above. */
	if (inta & CSR_INT_BIT_HW_ERR) {
1389
		IWL_ERR(priv, "Hardware error detected.  Restarting.\n");
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1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402

		/* Tell the device to stop sending interrupts */
		iwl_disable_interrupts(priv);

		priv->isr_stats.hw++;
		iwl_irq_handle_error(priv);

		handled |= CSR_INT_BIT_HW_ERR;

		return;
	}

#ifdef CONFIG_IWLWIFI_DEBUG
1403
	if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
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1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427
		/* NIC fires this, but we don't use it, redundant with WAKEUP */
		if (inta & CSR_INT_BIT_SCD) {
			IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
				      "the frame/frames.\n");
			priv->isr_stats.sch++;
		}

		/* Alive notification via Rx interrupt will do the real work */
		if (inta & CSR_INT_BIT_ALIVE) {
			IWL_DEBUG_ISR(priv, "Alive interrupt\n");
			priv->isr_stats.alive++;
		}
	}
#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;

1428
		IWL_WARN(priv, "RF_KILL bit toggled to %s.\n",
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1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442
				hw_rf_kill ? "disable radio" : "enable radio");

		priv->isr_stats.rfkill++;

		/* 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);
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1443
			wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill);
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		}

		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");
		priv->isr_stats.ctkill++;
		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);
		priv->isr_stats.sw++;
		priv->isr_stats.sw_err = 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(priv, "Wakeup interrupt\n");
		iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1470 1471
		for (i = 0; i < priv->hw_params.max_txq_num; i++)
			iwl_txq_update_write_ptr(priv, &priv->txq[i]);
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		priv->isr_stats.wakeup++;

		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*/
1481 1482
	if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX |
			CSR_INT_BIT_RX_PERIODIC)) {
M
Mohamed Abbas 已提交
1483
		IWL_DEBUG_ISR(priv, "Rx interrupt\n");
1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499
		if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
			handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
			iwl_write32(priv, CSR_FH_INT_STATUS,
					CSR49_FH_INT_RX_MASK);
		}
		if (inta & CSR_INT_BIT_RX_PERIODIC) {
			handled |= CSR_INT_BIT_RX_PERIODIC;
			iwl_write32(priv, CSR_INT, CSR_INT_BIT_RX_PERIODIC);
		}
		/* Sending RX interrupt require many steps to be done in the
		 * the device:
		 * 1- write interrupt to current index in ICT table.
		 * 2- dma RX frame.
		 * 3- update RX shared data to indicate last write index.
		 * 4- send interrupt.
		 * This could lead to RX race, driver could receive RX interrupt
1500 1501
		 * but the shared data changes does not reflect this;
		 * periodic interrupt will detect any dangling Rx activity.
1502
		 */
1503 1504 1505

		/* Disable periodic interrupt; we use it as just a one-shot. */
		iwl_write8(priv, CSR_INT_PERIODIC_REG,
1506
			    CSR_INT_PERIODIC_DIS);
M
Mohamed Abbas 已提交
1507
		iwl_rx_handle(priv);
1508 1509 1510 1511 1512 1513 1514 1515

		/*
		 * Enable periodic interrupt in 8 msec only if we received
		 * real RX interrupt (instead of just periodic int), to catch
		 * any dangling Rx interrupt.  If it was just the periodic
		 * interrupt, there was no dangling Rx activity, and no need
		 * to extend the periodic interrupt; one-shot is enough.
		 */
1516
		if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX))
1517
			iwl_write8(priv, CSR_INT_PERIODIC_REG,
1518 1519
				    CSR_INT_PERIODIC_ENA);

M
Mohamed Abbas 已提交
1520 1521 1522
		priv->isr_stats.rx++;
	}

B
Ben Cahill 已提交
1523
	/* This "Tx" DMA channel is used only for loading uCode */
M
Mohamed Abbas 已提交
1524 1525
	if (inta & CSR_INT_BIT_FH_TX) {
		iwl_write32(priv, CSR_FH_INT_STATUS, CSR49_FH_INT_TX_MASK);
B
Ben Cahill 已提交
1526
		IWL_DEBUG_ISR(priv, "uCode load interrupt\n");
M
Mohamed Abbas 已提交
1527 1528
		priv->isr_stats.tx++;
		handled |= CSR_INT_BIT_FH_TX;
B
Ben Cahill 已提交
1529
		/* Wake up uCode load routine, now that load is complete */
M
Mohamed Abbas 已提交
1530 1531 1532 1533 1534 1535 1536 1537 1538
		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);
		priv->isr_stats.unhandled++;
	}

1539
	if (inta & ~(priv->inta_mask)) {
M
Mohamed Abbas 已提交
1540
		IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1541
			 inta & ~priv->inta_mask);
M
Mohamed Abbas 已提交
1542 1543 1544 1545 1546 1547 1548 1549
	}

	/* Re-enable all interrupts */
	/* only Re-enable if diabled by irq */
	if (test_bit(STATUS_INT_ENABLED, &priv->status))
		iwl_enable_interrupts(priv);
}

1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570
/* the threshold ratio of actual_ack_cnt to expected_ack_cnt in percent */
#define ACK_CNT_RATIO (50)
#define BA_TIMEOUT_CNT (5)
#define BA_TIMEOUT_MAX (16)

/**
 * iwl_good_ack_health - checks for ACK count ratios, BA timeout retries.
 *
 * When the ACK count ratio is 0 and aggregated BA timeout retries exceeding
 * the BA_TIMEOUT_MAX, reload firmware and bring system back to normal
 * operation state.
 */
bool iwl_good_ack_health(struct iwl_priv *priv,
				struct iwl_rx_packet *pkt)
{
	bool rc = true;
	int actual_ack_cnt_delta, expected_ack_cnt_delta;
	int ba_timeout_delta;

	actual_ack_cnt_delta =
		le32_to_cpu(pkt->u.stats.tx.actual_ack_cnt) -
1571
		le32_to_cpu(priv->_agn.statistics.tx.actual_ack_cnt);
1572 1573
	expected_ack_cnt_delta =
		le32_to_cpu(pkt->u.stats.tx.expected_ack_cnt) -
1574
		le32_to_cpu(priv->_agn.statistics.tx.expected_ack_cnt);
1575 1576
	ba_timeout_delta =
		le32_to_cpu(pkt->u.stats.tx.agg.ba_timeout) -
1577
		le32_to_cpu(priv->_agn.statistics.tx.agg.ba_timeout);
1578 1579 1580 1581 1582 1583 1584 1585 1586
	if ((priv->_agn.agg_tids_count > 0) &&
	    (expected_ack_cnt_delta > 0) &&
	    (((actual_ack_cnt_delta * 100) / expected_ack_cnt_delta)
		< ACK_CNT_RATIO) &&
	    (ba_timeout_delta > BA_TIMEOUT_CNT)) {
		IWL_DEBUG_RADIO(priv, "actual_ack_cnt delta = %d,"
				" expected_ack_cnt = %d\n",
				actual_ack_cnt_delta, expected_ack_cnt_delta);

1587 1588 1589 1590 1591 1592
#ifdef CONFIG_IWLWIFI_DEBUGFS
		/*
		 * This is ifdef'ed on DEBUGFS because otherwise the
		 * statistics aren't available. If DEBUGFS is set but
		 * DEBUG is not, these will just compile out.
		 */
1593
		IWL_DEBUG_RADIO(priv, "rx_detected_cnt delta = %d\n",
1594
				priv->_agn.delta_statistics.tx.rx_detected_cnt);
1595 1596
		IWL_DEBUG_RADIO(priv,
				"ack_or_ba_timeout_collision delta = %d\n",
1597
				priv->_agn.delta_statistics.tx.
1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608
				ack_or_ba_timeout_collision);
#endif
		IWL_DEBUG_RADIO(priv, "agg ba_timeout delta = %d\n",
				ba_timeout_delta);
		if (!actual_ack_cnt_delta &&
		    (ba_timeout_delta >= BA_TIMEOUT_MAX))
			rc = false;
	}
	return rc;
}

1609

1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723
/*****************************************************************************
 *
 * 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.
 *
 * The debug_level being managed using sysfs below is a per device debug
 * level that is used instead of the global debug level if it (the per
 * device debug level) is set.
 */
static ssize_t show_debug_level(struct device *d,
				struct device_attribute *attr, char *buf)
{
	struct iwl_priv *priv = dev_get_drvdata(d);
	return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
}
static ssize_t store_debug_level(struct device *d,
				struct device_attribute *attr,
				 const char *buf, size_t count)
{
	struct iwl_priv *priv = dev_get_drvdata(d);
	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;
		if (iwl_alloc_traffic_mem(priv))
			IWL_ERR(priv,
				"Not enough memory to generate traffic log\n");
	}
	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_temperature(struct device *d,
				struct device_attribute *attr, char *buf)
{
	struct iwl_priv *priv = dev_get_drvdata(d);

	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 = dev_get_drvdata(d);

	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 = dev_get_drvdata(d);
	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 {
		ret = iwl_set_tx_power(priv, val, false);
		if (ret)
			IWL_ERR(priv, "failed setting tx power (0x%d).\n",
				ret);
		else
			ret = count;
	}
	return ret;
}

static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);

static struct attribute *iwl_sysfs_entries[] = {
	&dev_attr_temperature.attr,
	&dev_attr_tx_power.attr,
#ifdef CONFIG_IWLWIFI_DEBUG
	&dev_attr_debug_level.attr,
#endif
	NULL
};

static struct attribute_group iwl_attribute_group = {
	.name = NULL,		/* put in device directory */
	.attrs = iwl_sysfs_entries,
};

Z
Zhu Yi 已提交
1724 1725 1726 1727 1728 1729
/******************************************************************************
 *
 * uCode download functions
 *
 ******************************************************************************/

1730
static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
Z
Zhu Yi 已提交
1731
{
1732 1733 1734 1735 1736 1737
	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);
Z
Zhu Yi 已提交
1738 1739
}

1740
static void iwl_nic_start(struct iwl_priv *priv)
1741 1742 1743 1744 1745
{
	/* Remove all resets to allow NIC to operate */
	iwl_write32(priv, CSR_RESET, 0);
}

1746 1747
struct iwlagn_ucode_capabilities {
	u32 max_probe_length;
1748
	u32 standard_phy_calibration_size;
J
Johannes Berg 已提交
1749
	bool pan;
1750
};
1751

1752
static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
1753 1754
static int iwl_mac_setup_register(struct iwl_priv *priv,
				  struct iwlagn_ucode_capabilities *capa);
1755

1756 1757 1758
#define UCODE_EXPERIMENTAL_INDEX	100
#define UCODE_EXPERIMENTAL_TAG		"exp"

1759 1760 1761
static int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first)
{
	const char *name_pre = priv->cfg->fw_name_pre;
1762
	char tag[8];
1763

1764 1765 1766 1767 1768 1769
	if (first) {
#ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
		priv->fw_index = UCODE_EXPERIMENTAL_INDEX;
		strcpy(tag, UCODE_EXPERIMENTAL_TAG);
	} else if (priv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
#endif
1770
		priv->fw_index = priv->cfg->ucode_api_max;
1771 1772
		sprintf(tag, "%d", priv->fw_index);
	} else {
1773
		priv->fw_index--;
1774 1775
		sprintf(tag, "%d", priv->fw_index);
	}
1776 1777 1778 1779 1780 1781

	if (priv->fw_index < priv->cfg->ucode_api_min) {
		IWL_ERR(priv, "no suitable firmware found!\n");
		return -ENOENT;
	}

1782
	sprintf(priv->firmware_name, "%s%s%s", name_pre, tag, ".ucode");
1783

1784 1785 1786
	IWL_DEBUG_INFO(priv, "attempting to load firmware %s'%s'\n",
		       (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
				? "EXPERIMENTAL " : "",
1787 1788 1789 1790 1791 1792 1793
		       priv->firmware_name);

	return request_firmware_nowait(THIS_MODULE, 1, priv->firmware_name,
				       &priv->pci_dev->dev, GFP_KERNEL, priv,
				       iwl_ucode_callback);
}

1794 1795 1796 1797 1798
struct iwlagn_firmware_pieces {
	const void *inst, *data, *init, *init_data, *boot;
	size_t inst_size, data_size, init_size, init_data_size, boot_size;

	u32 build;
1799 1800 1801

	u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
	u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881
};

static int iwlagn_load_legacy_firmware(struct iwl_priv *priv,
				       const struct firmware *ucode_raw,
				       struct iwlagn_firmware_pieces *pieces)
{
	struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
	u32 api_ver, hdr_size;
	const u8 *src;

	priv->ucode_ver = le32_to_cpu(ucode->ver);
	api_ver = IWL_UCODE_API(priv->ucode_ver);

	switch (api_ver) {
	default:
		/*
		 * 4965 doesn't revision the firmware file format
		 * along with the API version, it always uses v1
		 * file format.
		 */
		if ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) !=
				CSR_HW_REV_TYPE_4965) {
			hdr_size = 28;
			if (ucode_raw->size < hdr_size) {
				IWL_ERR(priv, "File size too small!\n");
				return -EINVAL;
			}
			pieces->build = le32_to_cpu(ucode->u.v2.build);
			pieces->inst_size = le32_to_cpu(ucode->u.v2.inst_size);
			pieces->data_size = le32_to_cpu(ucode->u.v2.data_size);
			pieces->init_size = le32_to_cpu(ucode->u.v2.init_size);
			pieces->init_data_size = le32_to_cpu(ucode->u.v2.init_data_size);
			pieces->boot_size = le32_to_cpu(ucode->u.v2.boot_size);
			src = ucode->u.v2.data;
			break;
		}
		/* fall through for 4965 */
	case 0:
	case 1:
	case 2:
		hdr_size = 24;
		if (ucode_raw->size < hdr_size) {
			IWL_ERR(priv, "File size too small!\n");
			return -EINVAL;
		}
		pieces->build = 0;
		pieces->inst_size = le32_to_cpu(ucode->u.v1.inst_size);
		pieces->data_size = le32_to_cpu(ucode->u.v1.data_size);
		pieces->init_size = le32_to_cpu(ucode->u.v1.init_size);
		pieces->init_data_size = le32_to_cpu(ucode->u.v1.init_data_size);
		pieces->boot_size = le32_to_cpu(ucode->u.v1.boot_size);
		src = ucode->u.v1.data;
		break;
	}

	/* Verify size of file vs. image size info in file's header */
	if (ucode_raw->size != hdr_size + pieces->inst_size +
				pieces->data_size + pieces->init_size +
				pieces->init_data_size + pieces->boot_size) {

		IWL_ERR(priv,
			"uCode file size %d does not match expected size\n",
			(int)ucode_raw->size);
		return -EINVAL;
	}

	pieces->inst = src;
	src += pieces->inst_size;
	pieces->data = src;
	src += pieces->data_size;
	pieces->init = src;
	src += pieces->init_size;
	pieces->init_data = src;
	src += pieces->init_data_size;
	pieces->boot = src;
	src += pieces->boot_size;

	return 0;
}

1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894
static int iwlagn_wanted_ucode_alternative = 1;

static int iwlagn_load_firmware(struct iwl_priv *priv,
				const struct firmware *ucode_raw,
				struct iwlagn_firmware_pieces *pieces,
				struct iwlagn_ucode_capabilities *capa)
{
	struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
	struct iwl_ucode_tlv *tlv;
	size_t len = ucode_raw->size;
	const u8 *data;
	int wanted_alternative = iwlagn_wanted_ucode_alternative, tmp;
	u64 alternatives;
1895 1896 1897
	u32 tlv_len;
	enum iwl_ucode_tlv_type tlv_type;
	const u8 *tlv_data;
1898

1899 1900
	if (len < sizeof(*ucode)) {
		IWL_ERR(priv, "uCode has invalid length: %zd\n", len);
1901
		return -EINVAL;
1902
	}
1903

1904 1905 1906
	if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
		IWL_ERR(priv, "invalid uCode magic: 0X%x\n",
			le32_to_cpu(ucode->magic));
1907
		return -EINVAL;
1908
	}
1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932

	/*
	 * Check which alternatives are present, and "downgrade"
	 * when the chosen alternative is not present, warning
	 * the user when that happens. Some files may not have
	 * any alternatives, so don't warn in that case.
	 */
	alternatives = le64_to_cpu(ucode->alternatives);
	tmp = wanted_alternative;
	if (wanted_alternative > 63)
		wanted_alternative = 63;
	while (wanted_alternative && !(alternatives & BIT(wanted_alternative)))
		wanted_alternative--;
	if (wanted_alternative && wanted_alternative != tmp)
		IWL_WARN(priv,
			 "uCode alternative %d not available, choosing %d\n",
			 tmp, wanted_alternative);

	priv->ucode_ver = le32_to_cpu(ucode->ver);
	pieces->build = le32_to_cpu(ucode->build);
	data = ucode->data;

	len -= sizeof(*ucode);

1933
	while (len >= sizeof(*tlv)) {
1934 1935 1936 1937 1938 1939 1940 1941 1942 1943
		u16 tlv_alt;

		len -= sizeof(*tlv);
		tlv = (void *)data;

		tlv_len = le32_to_cpu(tlv->length);
		tlv_type = le16_to_cpu(tlv->type);
		tlv_alt = le16_to_cpu(tlv->alternative);
		tlv_data = tlv->data;

1944 1945 1946
		if (len < tlv_len) {
			IWL_ERR(priv, "invalid TLV len: %zd/%u\n",
				len, tlv_len);
1947
			return -EINVAL;
1948
		}
1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981
		len -= ALIGN(tlv_len, 4);
		data += sizeof(*tlv) + ALIGN(tlv_len, 4);

		/*
		 * Alternative 0 is always valid.
		 *
		 * Skip alternative TLVs that are not selected.
		 */
		if (tlv_alt != 0 && tlv_alt != wanted_alternative)
			continue;

		switch (tlv_type) {
		case IWL_UCODE_TLV_INST:
			pieces->inst = tlv_data;
			pieces->inst_size = tlv_len;
			break;
		case IWL_UCODE_TLV_DATA:
			pieces->data = tlv_data;
			pieces->data_size = tlv_len;
			break;
		case IWL_UCODE_TLV_INIT:
			pieces->init = tlv_data;
			pieces->init_size = tlv_len;
			break;
		case IWL_UCODE_TLV_INIT_DATA:
			pieces->init_data = tlv_data;
			pieces->init_data_size = tlv_len;
			break;
		case IWL_UCODE_TLV_BOOT:
			pieces->boot = tlv_data;
			pieces->boot_size = tlv_len;
			break;
		case IWL_UCODE_TLV_PROBE_MAX_LEN:
1982 1983 1984
			if (tlv_len != sizeof(u32))
				goto invalid_tlv_len;
			capa->max_probe_length =
1985
					le32_to_cpup((__le32 *)tlv_data);
1986
			break;
J
Johannes Berg 已提交
1987 1988 1989 1990 1991
		case IWL_UCODE_TLV_PAN:
			if (tlv_len)
				goto invalid_tlv_len;
			capa->pan = true;
			break;
1992
		case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
1993 1994 1995
			if (tlv_len != sizeof(u32))
				goto invalid_tlv_len;
			pieces->init_evtlog_ptr =
1996
					le32_to_cpup((__le32 *)tlv_data);
1997 1998
			break;
		case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
1999 2000 2001
			if (tlv_len != sizeof(u32))
				goto invalid_tlv_len;
			pieces->init_evtlog_size =
2002
					le32_to_cpup((__le32 *)tlv_data);
2003 2004
			break;
		case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
2005 2006 2007
			if (tlv_len != sizeof(u32))
				goto invalid_tlv_len;
			pieces->init_errlog_ptr =
2008
					le32_to_cpup((__le32 *)tlv_data);
2009 2010
			break;
		case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
2011 2012 2013
			if (tlv_len != sizeof(u32))
				goto invalid_tlv_len;
			pieces->inst_evtlog_ptr =
2014
					le32_to_cpup((__le32 *)tlv_data);
2015 2016
			break;
		case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
2017 2018 2019
			if (tlv_len != sizeof(u32))
				goto invalid_tlv_len;
			pieces->inst_evtlog_size =
2020
					le32_to_cpup((__le32 *)tlv_data);
2021 2022
			break;
		case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
2023 2024 2025
			if (tlv_len != sizeof(u32))
				goto invalid_tlv_len;
			pieces->inst_errlog_ptr =
2026
					le32_to_cpup((__le32 *)tlv_data);
2027
			break;
2028 2029
		case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
			if (tlv_len)
2030 2031
				goto invalid_tlv_len;
			priv->enhance_sensitivity_table = true;
2032
			break;
2033
		case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
2034 2035 2036
			if (tlv_len != sizeof(u32))
				goto invalid_tlv_len;
			capa->standard_phy_calibration_size =
2037 2038
					le32_to_cpup((__le32 *)tlv_data);
			break;
2039
		default:
2040
			IWL_WARN(priv, "unknown TLV: %d\n", tlv_type);
2041 2042 2043 2044
			break;
		}
	}

2045 2046 2047
	if (len) {
		IWL_ERR(priv, "invalid TLV after parsing: %zd\n", len);
		iwl_print_hex_dump(priv, IWL_DL_FW, (u8 *)data, len);
2048
		return -EINVAL;
2049
	}
2050

2051 2052 2053 2054 2055 2056 2057
	return 0;

 invalid_tlv_len:
	IWL_ERR(priv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
	iwl_print_hex_dump(priv, IWL_DL_FW, tlv_data, tlv_len);

	return -EINVAL;
2058 2059
}

Z
Zhu Yi 已提交
2060
/**
2061
 * iwl_ucode_callback - callback when firmware was loaded
Z
Zhu Yi 已提交
2062
 *
2063 2064
 * If loaded successfully, copies the firmware into buffers
 * for the card to fetch (via DMA).
Z
Zhu Yi 已提交
2065
 */
2066
static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
Z
Zhu Yi 已提交
2067
{
2068
	struct iwl_priv *priv = context;
2069
	struct iwl_ucode_header *ucode;
2070 2071
	int err;
	struct iwlagn_firmware_pieces pieces;
2072 2073
	const unsigned int api_max = priv->cfg->ucode_api_max;
	const unsigned int api_min = priv->cfg->ucode_api_min;
2074
	u32 api_ver;
2075
	char buildstr[25];
2076
	u32 build;
2077 2078
	struct iwlagn_ucode_capabilities ucode_capa = {
		.max_probe_length = 200,
2079 2080
		.standard_phy_calibration_size =
			IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE,
2081
	};
2082 2083

	memset(&pieces, 0, sizeof(pieces));
Z
Zhu Yi 已提交
2084

2085
	if (!ucode_raw) {
2086 2087 2088 2089
		if (priv->fw_index <= priv->cfg->ucode_api_max)
			IWL_ERR(priv,
				"request for firmware file '%s' failed.\n",
				priv->firmware_name);
2090
		goto try_again;
Z
Zhu Yi 已提交
2091 2092
	}

2093 2094
	IWL_DEBUG_INFO(priv, "Loaded firmware file '%s' (%zd bytes).\n",
		       priv->firmware_name, ucode_raw->size);
Z
Zhu Yi 已提交
2095

2096 2097
	/* Make sure that we got at least the API version number */
	if (ucode_raw->size < 4) {
2098
		IWL_ERR(priv, "File size way too small!\n");
2099
		goto try_again;
Z
Zhu Yi 已提交
2100 2101 2102
	}

	/* Data from ucode file:  header followed by uCode images */
2103
	ucode = (struct iwl_ucode_header *)ucode_raw->data;
Z
Zhu Yi 已提交
2104

2105 2106 2107
	if (ucode->ver)
		err = iwlagn_load_legacy_firmware(priv, ucode_raw, &pieces);
	else
2108 2109
		err = iwlagn_load_firmware(priv, ucode_raw, &pieces,
					   &ucode_capa);
2110

2111 2112
	if (err)
		goto try_again;
Z
Zhu Yi 已提交
2113

2114
	api_ver = IWL_UCODE_API(priv->ucode_ver);
2115
	build = pieces.build;
2116

2117 2118 2119 2120 2121
	/*
	 * 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 firmware header from here on forward
	 */
2122
	if (api_ver < api_min || api_ver > api_max) {
2123
		IWL_ERR(priv, "Driver unable to support your firmware API. "
2124 2125
			  "Driver supports v%u, firmware is v%u.\n",
			  api_max, api_ver);
2126
		goto try_again;
2127
	}
2128

2129
	if (api_ver != api_max)
T
Tomas Winkler 已提交
2130
		IWL_ERR(priv, "Firmware has old API version. Expected v%u, "
2131 2132 2133 2134
			  "got v%u. New firmware can be obtained "
			  "from http://www.intellinuxwireless.org.\n",
			  api_max, api_ver);

2135
	if (build)
2136 2137 2138
		sprintf(buildstr, " build %u%s", build,
		       (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
				? " (EXP)" : "");
2139 2140 2141 2142 2143 2144 2145 2146 2147
	else
		buildstr[0] = '\0';

	IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u%s\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),
		 buildstr);
2148

2149 2150
	snprintf(priv->hw->wiphy->fw_version,
		 sizeof(priv->hw->wiphy->fw_version),
2151
		 "%u.%u.%u.%u%s",
2152 2153 2154
		 IWL_UCODE_MAJOR(priv->ucode_ver),
		 IWL_UCODE_MINOR(priv->ucode_ver),
		 IWL_UCODE_API(priv->ucode_ver),
2155 2156
		 IWL_UCODE_SERIAL(priv->ucode_ver),
		 buildstr);
Z
Zhu Yi 已提交
2157

2158 2159 2160 2161 2162 2163
	/*
	 * For any of the failures below (before allocating pci memory)
	 * we will try to load a version with a smaller API -- maybe the
	 * user just got a corrupted version of the latest API.
	 */

2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175
	IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
		       priv->ucode_ver);
	IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %Zd\n",
		       pieces.inst_size);
	IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %Zd\n",
		       pieces.data_size);
	IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %Zd\n",
		       pieces.init_size);
	IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %Zd\n",
		       pieces.init_data_size);
	IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %Zd\n",
		       pieces.boot_size);
Z
Zhu Yi 已提交
2176 2177

	/* Verify that uCode images will fit in card's SRAM */
2178 2179 2180
	if (pieces.inst_size > priv->hw_params.max_inst_size) {
		IWL_ERR(priv, "uCode instr len %Zd too large to fit in\n",
			pieces.inst_size);
2181
		goto try_again;
Z
Zhu Yi 已提交
2182 2183
	}

2184 2185 2186
	if (pieces.data_size > priv->hw_params.max_data_size) {
		IWL_ERR(priv, "uCode data len %Zd too large to fit in\n",
			pieces.data_size);
2187
		goto try_again;
Z
Zhu Yi 已提交
2188
	}
2189 2190 2191 2192

	if (pieces.init_size > priv->hw_params.max_inst_size) {
		IWL_ERR(priv, "uCode init instr len %Zd too large to fit in\n",
			pieces.init_size);
2193
		goto try_again;
Z
Zhu Yi 已提交
2194
	}
2195 2196 2197 2198

	if (pieces.init_data_size > priv->hw_params.max_data_size) {
		IWL_ERR(priv, "uCode init data len %Zd too large to fit in\n",
			pieces.init_data_size);
2199
		goto try_again;
Z
Zhu Yi 已提交
2200
	}
2201 2202 2203 2204

	if (pieces.boot_size > priv->hw_params.max_bsm_size) {
		IWL_ERR(priv, "uCode boot instr len %Zd too large to fit in\n",
			pieces.boot_size);
2205
		goto try_again;
Z
Zhu Yi 已提交
2206 2207 2208 2209 2210 2211 2212
	}

	/* 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 */
2213
	priv->ucode_code.len = pieces.inst_size;
2214
	iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
Z
Zhu Yi 已提交
2215

2216
	priv->ucode_data.len = pieces.data_size;
2217
	iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
Z
Zhu Yi 已提交
2218

2219
	priv->ucode_data_backup.len = pieces.data_size;
2220
	iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
Z
Zhu Yi 已提交
2221

2222 2223 2224 2225
	if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
	    !priv->ucode_data_backup.v_addr)
		goto err_pci_alloc;

Z
Zhu Yi 已提交
2226
	/* Initialization instructions and data */
2227 2228
	if (pieces.init_size && pieces.init_data_size) {
		priv->ucode_init.len = pieces.init_size;
2229
		iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2230

2231
		priv->ucode_init_data.len = pieces.init_data_size;
2232
		iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2233 2234 2235 2236

		if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
			goto err_pci_alloc;
	}
Z
Zhu Yi 已提交
2237 2238

	/* Bootstrap (instructions only, no data) */
2239 2240
	if (pieces.boot_size) {
		priv->ucode_boot.len = pieces.boot_size;
2241
		iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
Z
Zhu Yi 已提交
2242

2243 2244 2245
		if (!priv->ucode_boot.v_addr)
			goto err_pci_alloc;
	}
Z
Zhu Yi 已提交
2246

2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266
	/* Now that we can no longer fail, copy information */

	/*
	 * The (size - 16) / 12 formula is based on the information recorded
	 * for each event, which is of mode 1 (including timestamp) for all
	 * new microcodes that include this information.
	 */
	priv->_agn.init_evtlog_ptr = pieces.init_evtlog_ptr;
	if (pieces.init_evtlog_size)
		priv->_agn.init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
	else
		priv->_agn.init_evtlog_size = priv->cfg->max_event_log_size;
	priv->_agn.init_errlog_ptr = pieces.init_errlog_ptr;
	priv->_agn.inst_evtlog_ptr = pieces.inst_evtlog_ptr;
	if (pieces.inst_evtlog_size)
		priv->_agn.inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
	else
		priv->_agn.inst_evtlog_size = priv->cfg->max_event_log_size;
	priv->_agn.inst_errlog_ptr = pieces.inst_errlog_ptr;

J
Johannes Berg 已提交
2267 2268
	if (ucode_capa.pan) {
		priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
2269
		priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
J
Johannes Berg 已提交
2270 2271
	} else
		priv->sta_key_max_num = STA_KEY_MAX_NUM;
2272

Z
Zhu Yi 已提交
2273 2274 2275
	/* Copy images into buffers for card's bus-master reads ... */

	/* Runtime instructions (first block of data in file) */
2276 2277 2278
	IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode instr len %Zd\n",
			pieces.inst_size);
	memcpy(priv->ucode_code.v_addr, pieces.inst, pieces.inst_size);
2279

2280
	IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
Z
Zhu Yi 已提交
2281 2282
		priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);

2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293
	/*
	 * Runtime data
	 * NOTE:  Copy into backup buffer will be done in iwl_up()
	 */
	IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode data len %Zd\n",
			pieces.data_size);
	memcpy(priv->ucode_data.v_addr, pieces.data, pieces.data_size);
	memcpy(priv->ucode_data_backup.v_addr, pieces.data, pieces.data_size);

	/* Initialization instructions */
	if (pieces.init_size) {
2294
		IWL_DEBUG_INFO(priv, "Copying (but not loading) init instr len %Zd\n",
2295 2296
				pieces.init_size);
		memcpy(priv->ucode_init.v_addr, pieces.init, pieces.init_size);
Z
Zhu Yi 已提交
2297 2298
	}

2299 2300
	/* Initialization data */
	if (pieces.init_data_size) {
2301
		IWL_DEBUG_INFO(priv, "Copying (but not loading) init data len %Zd\n",
2302 2303 2304
			       pieces.init_data_size);
		memcpy(priv->ucode_init_data.v_addr, pieces.init_data,
		       pieces.init_data_size);
Z
Zhu Yi 已提交
2305 2306
	}

2307 2308 2309 2310
	/* Bootstrap instructions */
	IWL_DEBUG_INFO(priv, "Copying (but not loading) boot instr len %Zd\n",
			pieces.boot_size);
	memcpy(priv->ucode_boot.v_addr, pieces.boot, pieces.boot_size);
Z
Zhu Yi 已提交
2311

2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325
	/*
	 * figure out the offset of chain noise reset and gain commands
	 * base on the size of standard phy calibration commands table size
	 */
	if (ucode_capa.standard_phy_calibration_size >
	    IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
		ucode_capa.standard_phy_calibration_size =
			IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;

	priv->_agn.phy_calib_chain_noise_reset_cmd =
		ucode_capa.standard_phy_calibration_size;
	priv->_agn.phy_calib_chain_noise_gain_cmd =
		ucode_capa.standard_phy_calibration_size + 1;

2326 2327 2328 2329 2330
	/**************************************************
	 * This is still part of probe() in a sense...
	 *
	 * 9. Setup and register with mac80211 and debugfs
	 **************************************************/
2331
	err = iwl_mac_setup_register(priv, &ucode_capa);
2332 2333 2334 2335 2336 2337 2338
	if (err)
		goto out_unbind;

	err = iwl_dbgfs_register(priv, DRV_NAME);
	if (err)
		IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);

2339 2340 2341 2342 2343 2344 2345
	err = sysfs_create_group(&priv->pci_dev->dev.kobj,
					&iwl_attribute_group);
	if (err) {
		IWL_ERR(priv, "failed to create sysfs device attributes\n");
		goto out_unbind;
	}

Z
Zhu Yi 已提交
2346 2347
	/* We have our copies now, allow OS release its copies */
	release_firmware(ucode_raw);
2348
	complete(&priv->_agn.firmware_loading_complete);
2349 2350 2351 2352 2353 2354 2355 2356
	return;

 try_again:
	/* try next, if any */
	if (iwl_request_firmware(priv, false))
		goto out_unbind;
	release_firmware(ucode_raw);
	return;
Z
Zhu Yi 已提交
2357 2358

 err_pci_alloc:
2359
	IWL_ERR(priv, "failed to allocate pci memory\n");
2360
	iwl_dealloc_ucode_pci(priv);
2361
 out_unbind:
2362
	complete(&priv->_agn.firmware_loading_complete);
2363
	device_release_driver(&priv->pci_dev->dev);
Z
Zhu Yi 已提交
2364 2365 2366
	release_firmware(ucode_raw);
}

2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397
static const char *desc_lookup_text[] = {
	"OK",
	"FAIL",
	"BAD_PARAM",
	"BAD_CHECKSUM",
	"NMI_INTERRUPT_WDG",
	"SYSASSERT",
	"FATAL_ERROR",
	"BAD_COMMAND",
	"HW_ERROR_TUNE_LOCK",
	"HW_ERROR_TEMPERATURE",
	"ILLEGAL_CHAN_FREQ",
	"VCC_NOT_STABLE",
	"FH_ERROR",
	"NMI_INTERRUPT_HOST",
	"NMI_INTERRUPT_ACTION_PT",
	"NMI_INTERRUPT_UNKNOWN",
	"UCODE_VERSION_MISMATCH",
	"HW_ERROR_ABS_LOCK",
	"HW_ERROR_CAL_LOCK_FAIL",
	"NMI_INTERRUPT_INST_ACTION_PT",
	"NMI_INTERRUPT_DATA_ACTION_PT",
	"NMI_TRM_HW_ER",
	"NMI_INTERRUPT_TRM",
	"NMI_INTERRUPT_BREAK_POINT"
	"DEBUG_0",
	"DEBUG_1",
	"DEBUG_2",
	"DEBUG_3",
};

2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417
static struct { char *name; u8 num; } advanced_lookup[] = {
	{ "NMI_INTERRUPT_WDG", 0x34 },
	{ "SYSASSERT", 0x35 },
	{ "UCODE_VERSION_MISMATCH", 0x37 },
	{ "BAD_COMMAND", 0x38 },
	{ "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
	{ "FATAL_ERROR", 0x3D },
	{ "NMI_TRM_HW_ERR", 0x46 },
	{ "NMI_INTERRUPT_TRM", 0x4C },
	{ "NMI_INTERRUPT_BREAK_POINT", 0x54 },
	{ "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
	{ "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
	{ "NMI_INTERRUPT_HOST", 0x66 },
	{ "NMI_INTERRUPT_ACTION_PT", 0x7C },
	{ "NMI_INTERRUPT_UNKNOWN", 0x84 },
	{ "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
	{ "ADVANCED_SYSASSERT", 0 },
};

static const char *desc_lookup(u32 num)
2418
{
2419 2420
	int i;
	int max = ARRAY_SIZE(desc_lookup_text);
2421

2422 2423
	if (num < max)
		return desc_lookup_text[num];
2424

2425 2426 2427 2428 2429 2430
	max = ARRAY_SIZE(advanced_lookup) - 1;
	for (i = 0; i < max; i++) {
		if (advanced_lookup[i].num == num)
			break;;
	}
	return advanced_lookup[i].name;
2431 2432 2433 2434 2435 2436 2437 2438 2439 2440
}

#define ERROR_START_OFFSET  (1 * sizeof(u32))
#define ERROR_ELEM_SIZE     (7 * sizeof(u32))

void iwl_dump_nic_error_log(struct iwl_priv *priv)
{
	u32 data2, line;
	u32 desc, time, count, base, data1;
	u32 blink1, blink2, ilink1, ilink2;
2441
	u32 pc, hcmd;
2442

2443
	if (priv->ucode_type == UCODE_INIT) {
2444
		base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
2445 2446 2447
		if (!base)
			base = priv->_agn.init_errlog_ptr;
	} else {
2448
		base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
2449 2450 2451
		if (!base)
			base = priv->_agn.inst_errlog_ptr;
	}
2452 2453

	if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
2454 2455 2456
		IWL_ERR(priv,
			"Not valid error log pointer 0x%08X for %s uCode\n",
			base, (priv->ucode_type == UCODE_INIT) ? "Init" : "RT");
2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468
		return;
	}

	count = iwl_read_targ_mem(priv, base);

	if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
		IWL_ERR(priv, "Start IWL Error Log Dump:\n");
		IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
			priv->status, count);
	}

	desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
2469
	pc = iwl_read_targ_mem(priv, base + 2 * sizeof(u32));
2470 2471 2472 2473 2474 2475 2476 2477
	blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
	blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
	ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
	ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
	data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
	data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
	line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
	time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
2478
	hcmd = iwl_read_targ_mem(priv, base + 22 * sizeof(u32));
2479

J
Johannes Berg 已提交
2480 2481 2482
	trace_iwlwifi_dev_ucode_error(priv, desc, time, data1, data2, line,
				      blink1, blink2, ilink1, ilink2);

2483
	IWL_ERR(priv, "Desc                                  Time       "
2484
		"data1      data2      line\n");
2485
	IWL_ERR(priv, "%-28s (0x%04X) %010u 0x%08X 0x%08X %u\n",
2486
		desc_lookup(desc), desc, time, data1, data2, line);
2487 2488 2489
	IWL_ERR(priv, "pc      blink1  blink2  ilink1  ilink2  hcmd\n");
	IWL_ERR(priv, "0x%05X 0x%05X 0x%05X 0x%05X 0x%05X 0x%05X\n",
		pc, blink1, blink2, ilink1, ilink2, hcmd);
2490 2491 2492 2493 2494 2495 2496 2497
}

#define EVENT_START_OFFSET  (4 * sizeof(u32))

/**
 * iwl_print_event_log - Dump error event log to syslog
 *
 */
W
Wey-Yi Guy 已提交
2498 2499 2500
static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
			       u32 num_events, u32 mode,
			       int pos, char **buf, size_t bufsz)
2501 2502 2503 2504 2505 2506
{
	u32 i;
	u32 base;       /* SRAM byte address of event log header */
	u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
	u32 ptr;        /* SRAM byte address of log data */
	u32 ev, time, data; /* event log data */
B
Ben Cahill 已提交
2507
	unsigned long reg_flags;
2508 2509

	if (num_events == 0)
W
Wey-Yi Guy 已提交
2510
		return pos;
2511 2512

	if (priv->ucode_type == UCODE_INIT) {
2513
		base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
2514 2515 2516
		if (!base)
			base = priv->_agn.init_evtlog_ptr;
	} else {
2517
		base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
2518 2519 2520
		if (!base)
			base = priv->_agn.inst_evtlog_ptr;
	}
2521 2522 2523 2524 2525 2526 2527 2528

	if (mode == 0)
		event_size = 2 * sizeof(u32);
	else
		event_size = 3 * sizeof(u32);

	ptr = base + EVENT_START_OFFSET + (start_idx * event_size);

B
Ben Cahill 已提交
2529 2530 2531 2532 2533 2534 2535 2536
	/* Make sure device is powered up for SRAM reads */
	spin_lock_irqsave(&priv->reg_lock, reg_flags);
	iwl_grab_nic_access(priv);

	/* Set starting address; reads will auto-increment */
	_iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr);
	rmb();

2537 2538 2539
	/* "time" is actually "data" for mode 0 (no timestamp).
	* place event id # at far right for easier visual parsing. */
	for (i = 0; i < num_events; i++) {
B
Ben Cahill 已提交
2540 2541
		ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
		time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2542 2543
		if (mode == 0) {
			/* data, ev */
W
Wey-Yi Guy 已提交
2544 2545 2546 2547 2548 2549 2550 2551 2552 2553
			if (bufsz) {
				pos += scnprintf(*buf + pos, bufsz - pos,
						"EVT_LOG:0x%08x:%04u\n",
						time, ev);
			} else {
				trace_iwlwifi_dev_ucode_event(priv, 0,
					time, ev);
				IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
					time, ev);
			}
2554
		} else {
B
Ben Cahill 已提交
2555
			data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
W
Wey-Yi Guy 已提交
2556 2557 2558 2559 2560 2561
			if (bufsz) {
				pos += scnprintf(*buf + pos, bufsz - pos,
						"EVT_LOGT:%010u:0x%08x:%04u\n",
						 time, data, ev);
			} else {
				IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
2562
					time, data, ev);
W
Wey-Yi Guy 已提交
2563 2564 2565
				trace_iwlwifi_dev_ucode_event(priv, time,
					data, ev);
			}
2566 2567
		}
	}
B
Ben Cahill 已提交
2568 2569 2570 2571

	/* Allow device to power down */
	iwl_release_nic_access(priv);
	spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
W
Wey-Yi Guy 已提交
2572
	return pos;
2573 2574
}

2575 2576 2577
/**
 * iwl_print_last_event_logs - Dump the newest # of event log to syslog
 */
W
Wey-Yi Guy 已提交
2578 2579 2580 2581
static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
				    u32 num_wraps, u32 next_entry,
				    u32 size, u32 mode,
				    int pos, char **buf, size_t bufsz)
2582 2583 2584 2585 2586 2587 2588
{
	/*
	 * display the newest DEFAULT_LOG_ENTRIES entries
	 * i.e the entries just before the next ont that uCode would fill.
	 */
	if (num_wraps) {
		if (next_entry < size) {
W
Wey-Yi Guy 已提交
2589 2590 2591 2592 2593 2594 2595
			pos = iwl_print_event_log(priv,
						capacity - (size - next_entry),
						size - next_entry, mode,
						pos, buf, bufsz);
			pos = iwl_print_event_log(priv, 0,
						  next_entry, mode,
						  pos, buf, bufsz);
2596
		} else
W
Wey-Yi Guy 已提交
2597 2598
			pos = iwl_print_event_log(priv, next_entry - size,
						  size, mode, pos, buf, bufsz);
2599
	} else {
W
Wey-Yi Guy 已提交
2600 2601 2602 2603 2604 2605 2606
		if (next_entry < size) {
			pos = iwl_print_event_log(priv, 0, next_entry,
						  mode, pos, buf, bufsz);
		} else {
			pos = iwl_print_event_log(priv, next_entry - size,
						  size, mode, pos, buf, bufsz);
		}
2607
	}
W
Wey-Yi Guy 已提交
2608
	return pos;
2609 2610 2611 2612
}

#define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)

W
Wey-Yi Guy 已提交
2613 2614
int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
			    char **buf, bool display)
2615 2616 2617 2618 2619 2620 2621
{
	u32 base;       /* SRAM byte address of event log header */
	u32 capacity;   /* event log capacity in # entries */
	u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
	u32 num_wraps;  /* # times uCode wrapped to top of log */
	u32 next_entry; /* index of next entry to be written by uCode */
	u32 size;       /* # entries that we'll print */
2622
	u32 logsize;
W
Wey-Yi Guy 已提交
2623 2624
	int pos = 0;
	size_t bufsz = 0;
2625

2626
	if (priv->ucode_type == UCODE_INIT) {
2627
		base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
2628 2629 2630 2631
		logsize = priv->_agn.init_evtlog_size;
		if (!base)
			base = priv->_agn.init_evtlog_ptr;
	} else {
2632
		base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
2633 2634 2635 2636
		logsize = priv->_agn.inst_evtlog_size;
		if (!base)
			base = priv->_agn.inst_evtlog_ptr;
	}
2637 2638

	if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
2639 2640 2641
		IWL_ERR(priv,
			"Invalid event log pointer 0x%08X for %s uCode\n",
			base, (priv->ucode_type == UCODE_INIT) ? "Init" : "RT");
2642
		return -EINVAL;
2643 2644 2645 2646 2647 2648 2649 2650
	}

	/* event log header */
	capacity = iwl_read_targ_mem(priv, base);
	mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
	num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
	next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));

2651
	if (capacity > logsize) {
B
Ben Cahill 已提交
2652
		IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n",
2653 2654
			capacity, logsize);
		capacity = logsize;
B
Ben Cahill 已提交
2655 2656
	}

2657
	if (next_entry > logsize) {
B
Ben Cahill 已提交
2658
		IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
2659 2660
			next_entry, logsize);
		next_entry = logsize;
B
Ben Cahill 已提交
2661 2662
	}

2663 2664 2665 2666 2667
	size = num_wraps ? capacity : next_entry;

	/* bail out if nothing in log */
	if (size == 0) {
		IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
W
Wey-Yi Guy 已提交
2668
		return pos;
2669 2670
	}

2671 2672 2673
	/* enable/disable bt channel announcement */
	priv->bt_ch_announce = iwlagn_bt_ch_announce;

2674
#ifdef CONFIG_IWLWIFI_DEBUG
2675
	if (!(iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) && !full_log)
2676 2677 2678 2679 2680 2681 2682 2683
		size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
			? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
#else
	size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
		? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
#endif
	IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
		size);
2684

2685
#ifdef CONFIG_IWLWIFI_DEBUG
W
Wey-Yi Guy 已提交
2686 2687 2688 2689 2690 2691 2692
	if (display) {
		if (full_log)
			bufsz = capacity * 48;
		else
			bufsz = size * 48;
		*buf = kmalloc(bufsz, GFP_KERNEL);
		if (!*buf)
2693
			return -ENOMEM;
W
Wey-Yi Guy 已提交
2694
	}
2695 2696 2697 2698 2699 2700 2701
	if ((iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) {
		/*
		 * if uCode has wrapped back to top of log,
		 * start at the oldest entry,
		 * i.e the next one that uCode would fill.
		 */
		if (num_wraps)
W
Wey-Yi Guy 已提交
2702 2703 2704
			pos = iwl_print_event_log(priv, next_entry,
						capacity - next_entry, mode,
						pos, buf, bufsz);
2705
		/* (then/else) start at top of log */
W
Wey-Yi Guy 已提交
2706 2707
		pos = iwl_print_event_log(priv, 0,
					  next_entry, mode, pos, buf, bufsz);
2708
	} else
W
Wey-Yi Guy 已提交
2709 2710 2711
		pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
						next_entry, size, mode,
						pos, buf, bufsz);
2712
#else
W
Wey-Yi Guy 已提交
2713 2714 2715
	pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
					next_entry, size, mode,
					pos, buf, bufsz);
2716
#endif
W
Wey-Yi Guy 已提交
2717
	return pos;
2718
}
2719

2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758 2759 2760 2761 2762 2763 2764 2765
static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
{
	struct iwl_ct_kill_config cmd;
	struct iwl_ct_kill_throttling_config adv_cmd;
	unsigned long flags;
	int ret = 0;

	spin_lock_irqsave(&priv->lock, flags);
	iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
		    CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
	spin_unlock_irqrestore(&priv->lock, flags);
	priv->thermal_throttle.ct_kill_toggle = false;

	if (priv->cfg->support_ct_kill_exit) {
		adv_cmd.critical_temperature_enter =
			cpu_to_le32(priv->hw_params.ct_kill_threshold);
		adv_cmd.critical_temperature_exit =
			cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);

		ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
				       sizeof(adv_cmd), &adv_cmd);
		if (ret)
			IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
		else
			IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
					"succeeded, "
					"critical temperature enter is %d,"
					"exit is %d\n",
				       priv->hw_params.ct_kill_threshold,
				       priv->hw_params.ct_kill_exit_threshold);
	} else {
		cmd.critical_temperature_R =
			cpu_to_le32(priv->hw_params.ct_kill_threshold);

		ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
				       sizeof(cmd), &cmd);
		if (ret)
			IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
		else
			IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
					"succeeded, "
					"critical temperature is %d\n",
					priv->hw_params.ct_kill_threshold);
	}
}

Z
Zhu Yi 已提交
2766
/**
2767
 * iwl_alive_start - called after REPLY_ALIVE notification received
Z
Zhu Yi 已提交
2768
 *                   from protocol/runtime uCode (initialization uCode's
2769
 *                   Alive gets handled by iwl_init_alive_start()).
Z
Zhu Yi 已提交
2770
 */
2771
static void iwl_alive_start(struct iwl_priv *priv)
Z
Zhu Yi 已提交
2772
{
2773
	int ret = 0;
2774
	struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
Z
Zhu Yi 已提交
2775

2776
	IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
Z
Zhu Yi 已提交
2777 2778 2779 2780

	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 */
2781
		IWL_DEBUG_INFO(priv, "Alive failed.\n");
Z
Zhu Yi 已提交
2782 2783 2784 2785 2786 2787
		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.  */
2788
	if (iwl_verify_ucode(priv)) {
Z
Zhu Yi 已提交
2789 2790
		/* Runtime instruction load was bad;
		 * take it all the way back down so we can try again */
2791
		IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
Z
Zhu Yi 已提交
2792 2793 2794
		goto restart;
	}

2795 2796
	ret = priv->cfg->ops->lib->alive_notify(priv);
	if (ret) {
2797 2798
		IWL_WARN(priv,
			"Could not complete ALIVE transition [ntf]: %d\n", ret);
Z
Zhu Yi 已提交
2799 2800 2801
		goto restart;
	}

2802
	/* After the ALIVE response, we can send host commands to the uCode */
Z
Zhu Yi 已提交
2803 2804
	set_bit(STATUS_ALIVE, &priv->status);

2805 2806 2807 2808 2809 2810 2811
	if (priv->cfg->ops->lib->recover_from_tx_stall) {
		/* Enable timer to monitor the driver queues */
		mod_timer(&priv->monitor_recover,
			jiffies +
			msecs_to_jiffies(priv->cfg->monitor_recover_period));
	}

2812
	if (iwl_is_rfkill(priv))
Z
Zhu Yi 已提交
2813 2814
		return;

2815
	ieee80211_wake_queues(priv->hw);
Z
Zhu Yi 已提交
2816

2817
	priv->active_rate = IWL_RATES_MASK;
Z
Zhu Yi 已提交
2818

2819 2820 2821 2822
	/* Configure Tx antenna selection based on H/W config */
	if (priv->cfg->ops->hcmd->set_tx_ant)
		priv->cfg->ops->hcmd->set_tx_ant(priv, priv->cfg->valid_tx_ant);

2823
	if (iwl_is_associated_ctx(ctx)) {
G
Gregory Greenman 已提交
2824
		struct iwl_rxon_cmd *active_rxon =
2825
				(struct iwl_rxon_cmd *)&ctx->active;
2826
		/* apply any changes in staging */
2827
		ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
Z
Zhu Yi 已提交
2828 2829 2830
		active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
	} else {
		/* Initialize our rx_config data */
2831
		iwl_connection_init_rx_config(priv, NULL);
2832 2833

		if (priv->cfg->ops->hcmd->set_rxon_chain)
2834
			priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
Z
Zhu Yi 已提交
2835 2836
	}

2837 2838 2839 2840
	if (!priv->cfg->advanced_bt_coexist) {
		/* Configure Bluetooth device coexistence support */
		priv->cfg->ops->hcmd->send_bt_config(priv);
	}
Z
Zhu Yi 已提交
2841

2842 2843
	iwl_reset_run_time_calib(priv);

Z
Zhu Yi 已提交
2844
	/* Configure the adapter for unassociated operation */
2845
	iwlcore_commit_rxon(priv, ctx);
Z
Zhu Yi 已提交
2846 2847

	/* At this point, the NIC is initialized and operational */
2848
	iwl_rf_kill_ct_config(priv);
2849

J
Johannes Berg 已提交
2850
	iwl_leds_init(priv);
2851

2852
	IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2853
	set_bit(STATUS_READY, &priv->status);
2854
	wake_up_interruptible(&priv->wait_command_queue);
Z
Zhu Yi 已提交
2855

2856
	iwl_power_update_mode(priv, true);
2857 2858
	IWL_DEBUG_INFO(priv, "Updated power mode\n");

2859

Z
Zhu Yi 已提交
2860 2861 2862 2863 2864 2865
	return;

 restart:
	queue_work(priv->workqueue, &priv->restart);
}

2866
static void iwl_cancel_deferred_work(struct iwl_priv *priv);
Z
Zhu Yi 已提交
2867

2868
static void __iwl_down(struct iwl_priv *priv)
Z
Zhu Yi 已提交
2869 2870 2871 2872
{
	unsigned long flags;
	int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);

2873
	IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
Z
Zhu Yi 已提交
2874 2875 2876 2877

	if (!exit_pending)
		set_bit(STATUS_EXIT_PENDING, &priv->status);

2878 2879 2880 2881 2882
	/* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
	 * to prevent rearm timer */
	if (priv->cfg->ops->lib->recover_from_tx_stall)
		del_timer_sync(&priv->monitor_recover);

2883
	iwl_clear_ucode_stations(priv, NULL);
2884
	iwl_dealloc_bcast_stations(priv);
2885
	iwl_clear_driver_stations(priv);
Z
Zhu Yi 已提交
2886

2887
	/* reset BT coex data */
2888
	priv->bt_status = 0;
2889
	priv->bt_traffic_load = priv->cfg->bt_init_traffic_load;
2890
	priv->bt_sco_active = false;
2891 2892
	priv->bt_full_concurrent = false;
	priv->bt_ci_compliance = 0;
2893

Z
Zhu Yi 已提交
2894 2895 2896 2897 2898 2899 2900 2901 2902
	/* 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 */
2903
	iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
Z
Zhu Yi 已提交
2904 2905

	/* tell the device to stop sending interrupts */
2906
	spin_lock_irqsave(&priv->lock, flags);
2907
	iwl_disable_interrupts(priv);
2908 2909
	spin_unlock_irqrestore(&priv->lock, flags);
	iwl_synchronize_irq(priv);
Z
Zhu Yi 已提交
2910 2911 2912 2913

	if (priv->mac80211_registered)
		ieee80211_stop_queues(priv->hw);

2914
	/* If we have not previously called iwl_init() then
J
Johannes Berg 已提交
2915
	 * clear all bits but the RF Kill bit and return */
2916
	if (!iwl_is_init(priv)) {
Z
Zhu Yi 已提交
2917 2918
		priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
					STATUS_RF_KILL_HW |
2919 2920
			       test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
					STATUS_GEO_CONFIGURED |
2921 2922
			       test_bit(STATUS_EXIT_PENDING, &priv->status) <<
					STATUS_EXIT_PENDING;
Z
Zhu Yi 已提交
2923 2924 2925
		goto exit;
	}

2926
	/* ...otherwise clear out all the status bits but the RF Kill
J
Johannes Berg 已提交
2927
	 * bit and continue taking the NIC down. */
Z
Zhu Yi 已提交
2928 2929
	priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
				STATUS_RF_KILL_HW |
2930 2931
			test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
				STATUS_GEO_CONFIGURED |
Z
Zhu Yi 已提交
2932
			test_bit(STATUS_FW_ERROR, &priv->status) <<
2933 2934 2935
				STATUS_FW_ERROR |
		       test_bit(STATUS_EXIT_PENDING, &priv->status) <<
				STATUS_EXIT_PENDING;
Z
Zhu Yi 已提交
2936

M
Mohamed Abbas 已提交
2937 2938
	/* device going down, Stop using ICT table */
	iwl_disable_ict(priv);
Z
Zhu Yi 已提交
2939

2940
	iwlagn_txq_ctx_stop(priv);
2941
	iwlagn_rxq_stop(priv);
Z
Zhu Yi 已提交
2942

B
Ben Cahill 已提交
2943 2944
	/* Power-down device's busmaster DMA clocks */
	iwl_write_prph(priv, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT);
Z
Zhu Yi 已提交
2945 2946
	udelay(5);

B
Ben Cahill 已提交
2947 2948 2949
	/* Make sure (redundant) we've released our request to stay awake */
	iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);

2950 2951 2952
	/* Stop the device, and put it in low power state */
	priv->cfg->ops->lib->apm_ops.stop(priv);

Z
Zhu Yi 已提交
2953
 exit:
2954
	memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
Z
Zhu Yi 已提交
2955 2956 2957 2958 2959 2960

	if (priv->ibss_beacon)
		dev_kfree_skb(priv->ibss_beacon);
	priv->ibss_beacon = NULL;

	/* clear out any free frames */
2961
	iwl_clear_free_frames(priv);
Z
Zhu Yi 已提交
2962 2963
}

2964
static void iwl_down(struct iwl_priv *priv)
Z
Zhu Yi 已提交
2965 2966
{
	mutex_lock(&priv->mutex);
2967
	__iwl_down(priv);
Z
Zhu Yi 已提交
2968
	mutex_unlock(&priv->mutex);
2969

2970
	iwl_cancel_deferred_work(priv);
Z
Zhu Yi 已提交
2971 2972
}

M
Mohamed Abbas 已提交
2973 2974 2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000
#define HW_READY_TIMEOUT (50)

static int iwl_set_hw_ready(struct iwl_priv *priv)
{
	int ret = 0;

	iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
		CSR_HW_IF_CONFIG_REG_BIT_NIC_READY);

	/* See if we got it */
	ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
				CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
				CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
				HW_READY_TIMEOUT);
	if (ret != -ETIMEDOUT)
		priv->hw_ready = true;
	else
		priv->hw_ready = false;

	IWL_DEBUG_INFO(priv, "hardware %s\n",
		      (priv->hw_ready == 1) ? "ready" : "not ready");
	return ret;
}

static int iwl_prepare_card_hw(struct iwl_priv *priv)
{
	int ret = 0;

3001
	IWL_DEBUG_INFO(priv, "iwl_prepare_card_hw enter\n");
M
Mohamed Abbas 已提交
3002

3003 3004 3005 3006 3007
	ret = iwl_set_hw_ready(priv);
	if (priv->hw_ready)
		return ret;

	/* If HW is not ready, prepare the conditions to check again */
M
Mohamed Abbas 已提交
3008 3009 3010 3011 3012 3013 3014
	iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
			CSR_HW_IF_CONFIG_REG_PREPARE);

	ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
			~CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE,
			CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE, 150000);

3015
	/* HW should be ready by now, check again. */
M
Mohamed Abbas 已提交
3016 3017 3018 3019 3020 3021
	if (ret != -ETIMEDOUT)
		iwl_set_hw_ready(priv);

	return ret;
}

Z
Zhu Yi 已提交
3022 3023
#define MAX_HW_RESTARTS 5

3024
static int __iwl_up(struct iwl_priv *priv)
Z
Zhu Yi 已提交
3025
{
3026
	struct iwl_rxon_context *ctx;
3027 3028
	int i;
	int ret;
Z
Zhu Yi 已提交
3029 3030

	if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3031
		IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
Z
Zhu Yi 已提交
3032 3033 3034
		return -EIO;
	}

3035
	if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
3036
		IWL_ERR(priv, "ucode not available for device bringup\n");
3037 3038 3039
		return -EIO;
	}

3040 3041 3042 3043 3044 3045 3046
	for_each_context(priv, ctx) {
		ret = iwl_alloc_bcast_station(priv, ctx, true);
		if (ret) {
			iwl_dealloc_bcast_stations(priv);
			return ret;
		}
	}
3047

M
Mohamed Abbas 已提交
3048 3049 3050 3051 3052 3053 3054
	iwl_prepare_card_hw(priv);

	if (!priv->hw_ready) {
		IWL_WARN(priv, "Exit HW not ready\n");
		return -EIO;
	}

3055
	/* If platform's RF_KILL switch is NOT set to KILL */
3056
	if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3057
		clear_bit(STATUS_RF_KILL_HW, &priv->status);
3058
	else
3059
		set_bit(STATUS_RF_KILL_HW, &priv->status);
3060

3061
	if (iwl_is_rfkill(priv)) {
J
Johannes Berg 已提交
3062 3063
		wiphy_rfkill_set_hw_state(priv->hw->wiphy, true);

3064
		iwl_enable_interrupts(priv);
J
Johannes Berg 已提交
3065
		IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
3066
		return 0;
Z
Zhu Yi 已提交
3067 3068
	}

3069
	iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
Z
Zhu Yi 已提交
3070

3071
	/* must be initialised before iwl_hw_nic_init */
J
Johannes Berg 已提交
3072 3073 3074 3075
	if (priv->valid_contexts != BIT(IWL_RXON_CTX_BSS))
		priv->cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
	else
		priv->cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
3076

3077
	ret = iwlagn_hw_nic_init(priv);
3078
	if (ret) {
3079
		IWL_ERR(priv, "Unable to init nic\n");
3080
		return ret;
Z
Zhu Yi 已提交
3081 3082 3083
	}

	/* make sure rfkill handshake bits are cleared */
3084 3085
	iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
	iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
Z
Zhu Yi 已提交
3086 3087 3088
		    CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);

	/* clear (again), then enable host interrupts */
3089
	iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3090
	iwl_enable_interrupts(priv);
Z
Zhu Yi 已提交
3091 3092

	/* really make sure rfkill handshake bits are cleared */
3093 3094
	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);
Z
Zhu Yi 已提交
3095 3096 3097 3098 3099

	/* 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,
3100
	       priv->ucode_data.len);
Z
Zhu Yi 已提交
3101 3102 3103 3104 3105 3106

	for (i = 0; i < MAX_HW_RESTARTS; i++) {

		/* load bootstrap state machine,
		 * load bootstrap program into processor's memory,
		 * prepare to load the "initialize" uCode */
3107
		ret = priv->cfg->ops->lib->load_ucode(priv);
Z
Zhu Yi 已提交
3108

3109
		if (ret) {
3110 3111
			IWL_ERR(priv, "Unable to set up bootstrap uCode: %d\n",
				ret);
Z
Zhu Yi 已提交
3112 3113 3114 3115
			continue;
		}

		/* start card; "initialize" will load runtime ucode */
3116
		iwl_nic_start(priv);
Z
Zhu Yi 已提交
3117

3118
		IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
Z
Zhu Yi 已提交
3119 3120 3121 3122 3123

		return 0;
	}

	set_bit(STATUS_EXIT_PENDING, &priv->status);
3124
	__iwl_down(priv);
M
Mohamed Abbas 已提交
3125
	clear_bit(STATUS_EXIT_PENDING, &priv->status);
Z
Zhu Yi 已提交
3126 3127 3128

	/* tried to restart and config the device for as long as our
	 * patience could withstand */
3129
	IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
Z
Zhu Yi 已提交
3130 3131 3132 3133 3134 3135 3136 3137 3138 3139
	return -EIO;
}


/*****************************************************************************
 *
 * Workqueue callbacks
 *
 *****************************************************************************/

3140
static void iwl_bg_init_alive_start(struct work_struct *data)
Z
Zhu Yi 已提交
3141
{
3142 3143
	struct iwl_priv *priv =
	    container_of(data, struct iwl_priv, init_alive_start.work);
Z
Zhu Yi 已提交
3144 3145 3146 3147 3148

	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
		return;

	mutex_lock(&priv->mutex);
3149
	priv->cfg->ops->lib->init_alive_start(priv);
Z
Zhu Yi 已提交
3150 3151 3152
	mutex_unlock(&priv->mutex);
}

3153
static void iwl_bg_alive_start(struct work_struct *data)
Z
Zhu Yi 已提交
3154
{
3155 3156
	struct iwl_priv *priv =
	    container_of(data, struct iwl_priv, alive_start.work);
Z
Zhu Yi 已提交
3157 3158 3159 3160

	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
		return;

M
Mohamed Abbas 已提交
3161 3162 3163
	/* enable dram interrupt */
	iwl_reset_ict(priv);

Z
Zhu Yi 已提交
3164
	mutex_lock(&priv->mutex);
3165
	iwl_alive_start(priv);
Z
Zhu Yi 已提交
3166 3167 3168
	mutex_unlock(&priv->mutex);
}

3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181 3182
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) {
3183 3184 3185 3186 3187 3188 3189 3190 3191 3192 3193
		if (priv->cfg->bt_statistics) {
			iwl_chain_noise_calibration(priv,
					(void *)&priv->_agn.statistics_bt);
			iwl_sensitivity_calibration(priv,
					(void *)&priv->_agn.statistics_bt);
		} else {
			iwl_chain_noise_calibration(priv,
					(void *)&priv->_agn.statistics);
			iwl_sensitivity_calibration(priv,
					(void *)&priv->_agn.statistics);
		}
3194 3195 3196 3197 3198
	}

	mutex_unlock(&priv->mutex);
}

3199
static void iwl_bg_restart(struct work_struct *data)
Z
Zhu Yi 已提交
3200
{
3201
	struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
Z
Zhu Yi 已提交
3202 3203 3204 3205

	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
		return;

J
Johannes Berg 已提交
3206
	if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
3207
		struct iwl_rxon_context *ctx;
3208 3209
		bool bt_sco, bt_full_concurrent;
		u8 bt_ci_compliance;
3210
		u8 bt_load;
3211
		u8 bt_status;
3212

J
Johannes Berg 已提交
3213
		mutex_lock(&priv->mutex);
3214 3215
		for_each_context(priv, ctx)
			ctx->vif = NULL;
J
Johannes Berg 已提交
3216
		priv->is_open = 0;
3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227

		/*
		 * __iwl_down() will clear the BT status variables,
		 * which is correct, but when we restart we really
		 * want to keep them so restore them afterwards.
		 *
		 * The restart process will later pick them up and
		 * re-configure the hw when we reconfigure the BT
		 * command.
		 */
		bt_sco = priv->bt_sco_active;
3228 3229
		bt_full_concurrent = priv->bt_full_concurrent;
		bt_ci_compliance = priv->bt_ci_compliance;
3230
		bt_load = priv->bt_traffic_load;
3231
		bt_status = priv->bt_status;
3232

3233
		__iwl_down(priv);
3234 3235

		priv->bt_sco_active = bt_sco;
3236 3237
		priv->bt_full_concurrent = bt_full_concurrent;
		priv->bt_ci_compliance = bt_ci_compliance;
3238
		priv->bt_traffic_load = bt_load;
3239
		priv->bt_status = bt_status;
3240

J
Johannes Berg 已提交
3241
		mutex_unlock(&priv->mutex);
3242
		iwl_cancel_deferred_work(priv);
J
Johannes Berg 已提交
3243 3244 3245
		ieee80211_restart_hw(priv->hw);
	} else {
		iwl_down(priv);
J
Johannes Berg 已提交
3246 3247 3248 3249 3250 3251 3252

		if (test_bit(STATUS_EXIT_PENDING, &priv->status))
			return;

		mutex_lock(&priv->mutex);
		__iwl_up(priv);
		mutex_unlock(&priv->mutex);
J
Johannes Berg 已提交
3253
	}
Z
Zhu Yi 已提交
3254 3255
}

3256
static void iwl_bg_rx_replenish(struct work_struct *data)
Z
Zhu Yi 已提交
3257
{
3258 3259
	struct iwl_priv *priv =
	    container_of(data, struct iwl_priv, rx_replenish);
Z
Zhu Yi 已提交
3260 3261 3262 3263 3264

	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
		return;

	mutex_lock(&priv->mutex);
3265
	iwlagn_rx_replenish(priv);
Z
Zhu Yi 已提交
3266 3267 3268
	mutex_unlock(&priv->mutex);
}

3269 3270
#define IWL_DELAY_NEXT_SCAN (HZ*2)

3271
void iwl_post_associate(struct iwl_priv *priv, struct ieee80211_vif *vif)
Z
Zhu Yi 已提交
3272
{
3273
	struct iwl_rxon_context *ctx;
Z
Zhu Yi 已提交
3274
	struct ieee80211_conf *conf = NULL;
3275
	int ret = 0;
Z
Zhu Yi 已提交
3276

3277 3278 3279
	if (!vif || !priv->is_open)
		return;

3280 3281
	ctx = iwl_rxon_ctx_from_vif(vif);

3282
	if (vif->type == NL80211_IFTYPE_AP) {
3283
		IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
Z
Zhu Yi 已提交
3284 3285 3286 3287 3288 3289
		return;
	}

	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
		return;

3290
	iwl_scan_cancel_timeout(priv, 200);
3291

Z
Zhu Yi 已提交
3292 3293
	conf = ieee80211_get_hw_conf(priv->hw);

3294 3295
	ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
	iwlcore_commit_rxon(priv, ctx);
Z
Zhu Yi 已提交
3296

3297
	ret = iwl_send_rxon_timing(priv, ctx);
3298
	if (ret)
3299
		IWL_WARN(priv, "RXON timing - "
Z
Zhu Yi 已提交
3300 3301
			    "Attempting to continue.\n");

3302
	ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
Z
Zhu Yi 已提交
3303

3304
	iwl_set_rxon_ht(priv, &priv->current_ht_config);
3305

3306
	if (priv->cfg->ops->hcmd->set_rxon_chain)
3307
		priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
3308

3309
	ctx->staging.assoc_id = cpu_to_le16(vif->bss_conf.aid);
Z
Zhu Yi 已提交
3310

3311
	IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
3312
			vif->bss_conf.aid, vif->bss_conf.beacon_int);
Z
Zhu Yi 已提交
3313

3314
	if (vif->bss_conf.use_short_preamble)
3315
		ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
Z
Zhu Yi 已提交
3316
	else
3317
		ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
Z
Zhu Yi 已提交
3318

3319
	if (ctx->staging.flags & RXON_FLG_BAND_24G_MSK) {
3320
		if (vif->bss_conf.use_short_slot)
3321
			ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
Z
Zhu Yi 已提交
3322
		else
3323
			ctx->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
Z
Zhu Yi 已提交
3324 3325
	}

3326
	iwlcore_commit_rxon(priv, ctx);
Z
Zhu Yi 已提交
3327

3328
	IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
3329
			vif->bss_conf.aid, ctx->active.bssid_addr);
3330

3331
	switch (vif->type) {
3332
	case NL80211_IFTYPE_STATION:
Z
Zhu Yi 已提交
3333
		break;
3334
	case NL80211_IFTYPE_ADHOC:
3335
		iwl_send_beacon_cmd(priv);
Z
Zhu Yi 已提交
3336 3337
		break;
	default:
3338
		IWL_ERR(priv, "%s Should not be called in %d mode\n",
3339
			  __func__, vif->type);
Z
Zhu Yi 已提交
3340 3341 3342
		break;
	}

3343 3344 3345 3346
	/* 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)
3347
		iwl_power_update_mode(priv, false);
3348 3349 3350 3351 3352

	/* Enable Rx differential gain and sensitivity calibrations */
	iwl_chain_noise_reset(priv);
	priv->start_calib = 1;

3353 3354
}

Z
Zhu Yi 已提交
3355 3356 3357 3358 3359 3360
/*****************************************************************************
 *
 * mac80211 entry point functions
 *
 *****************************************************************************/

3361
#define UCODE_READY_TIMEOUT	(4 * HZ)
3362

3363 3364 3365 3366
/*
 * Not a mac80211 entry point function, but it fits in with all the
 * other mac80211 functions grouped here.
 */
3367 3368
static int iwl_mac_setup_register(struct iwl_priv *priv,
				  struct iwlagn_ucode_capabilities *capa)
3369 3370 3371 3372 3373 3374 3375 3376
{
	int ret;
	struct ieee80211_hw *hw = priv->hw;
	hw->rate_control_algorithm = "iwl-agn-rs";

	/* Tell mac80211 our characteristics */
	hw->flags = IEEE80211_HW_SIGNAL_DBM |
		    IEEE80211_HW_AMPDU_AGGREGATION |
3377
		    IEEE80211_HW_NEED_DTIM_PERIOD |
3378 3379 3380 3381 3382 3383
		    IEEE80211_HW_SPECTRUM_MGMT;

	if (!priv->cfg->broken_powersave)
		hw->flags |= IEEE80211_HW_SUPPORTS_PS |
			     IEEE80211_HW_SUPPORTS_DYNAMIC_PS;

J
Johannes Berg 已提交
3384 3385 3386 3387
	if (priv->cfg->sku & IWL_SKU_N)
		hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
			     IEEE80211_HW_SUPPORTS_STATIC_SMPS;

3388
	hw->sta_data_size = sizeof(struct iwl_station_priv);
J
Johannes Berg 已提交
3389 3390
	hw->vif_data_size = sizeof(struct iwl_vif_priv);

3391 3392 3393 3394
	hw->wiphy->interface_modes =
		BIT(NL80211_IFTYPE_STATION) |
		BIT(NL80211_IFTYPE_ADHOC);

R
Reinette Chatre 已提交
3395
	hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
J
Johannes Berg 已提交
3396
			    WIPHY_FLAG_DISABLE_BEACON_HINTS;
3397 3398 3399 3400 3401

	/*
	 * For now, disable PS by default because it affects
	 * RX performance significantly.
	 */
J
Johannes Berg 已提交
3402
	hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
3403

3404
	hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
3405
	/* we create the 802.11 header and a zero-length SSID element */
3406
	hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 2;
3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427 3428 3429 3430

	/* Default value; 4 EDCA QOS priorities */
	hw->queues = 4;

	hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;

	if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
		priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
			&priv->bands[IEEE80211_BAND_2GHZ];
	if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
		priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
			&priv->bands[IEEE80211_BAND_5GHZ];

	ret = ieee80211_register_hw(priv->hw);
	if (ret) {
		IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
		return ret;
	}
	priv->mac80211_registered = 1;

	return 0;
}


3431
static int iwl_mac_start(struct ieee80211_hw *hw)
Z
Zhu Yi 已提交
3432
{
3433
	struct iwl_priv *priv = hw->priv;
3434
	int ret;
Z
Zhu Yi 已提交
3435

3436
	IWL_DEBUG_MAC80211(priv, "enter\n");
Z
Zhu Yi 已提交
3437 3438 3439

	/* we should be verifying the device is ready to be opened */
	mutex_lock(&priv->mutex);
3440
	ret = __iwl_up(priv);
Z
Zhu Yi 已提交
3441
	mutex_unlock(&priv->mutex);
3442

3443
	if (ret)
3444
		return ret;
3445

3446 3447 3448
	if (iwl_is_rfkill(priv))
		goto out;

3449
	IWL_DEBUG_INFO(priv, "Start UP work done.\n");
3450

3451
	/* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
3452
	 * mac80211 will not be run successfully. */
3453 3454 3455 3456 3457
	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)) {
3458
			IWL_ERR(priv, "START_ALIVE timeout after %dms.\n",
3459
				jiffies_to_msecs(UCODE_READY_TIMEOUT));
3460
			return -ETIMEDOUT;
3461
		}
3462
	}
T
Tomas Winkler 已提交
3463

J
Johannes Berg 已提交
3464 3465
	iwl_led_start(priv);

3466
out:
T
Tomas Winkler 已提交
3467
	priv->is_open = 1;
3468
	IWL_DEBUG_MAC80211(priv, "leave\n");
Z
Zhu Yi 已提交
3469 3470 3471
	return 0;
}

3472
static void iwl_mac_stop(struct ieee80211_hw *hw)
Z
Zhu Yi 已提交
3473
{
3474
	struct iwl_priv *priv = hw->priv;
Z
Zhu Yi 已提交
3475

3476
	IWL_DEBUG_MAC80211(priv, "enter\n");
M
Mohamed Abbas 已提交
3477

J
Johannes Berg 已提交
3478
	if (!priv->is_open)
3479 3480
		return;

Z
Zhu Yi 已提交
3481
	priv->is_open = 0;
3482

3483
	if (iwl_is_ready_rf(priv) || test_bit(STATUS_SCAN_HW, &priv->status)) {
3484 3485 3486
		/* stop mac, cancel any scan request and clear
		 * RXON_FILTER_ASSOC_MSK BIT
		 */
3487
		mutex_lock(&priv->mutex);
3488
		iwl_scan_cancel_timeout(priv, 100);
3489 3490 3491
		mutex_unlock(&priv->mutex);
	}

3492
	iwl_down(priv);
3493 3494

	flush_workqueue(priv->workqueue);
3495 3496 3497 3498

	/* enable interrupts again in order to receive rfkill changes */
	iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
	iwl_enable_interrupts(priv);
M
Mohamed Abbas 已提交
3499

3500
	IWL_DEBUG_MAC80211(priv, "leave\n");
Z
Zhu Yi 已提交
3501 3502
}

3503
static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
Z
Zhu Yi 已提交
3504
{
3505
	struct iwl_priv *priv = hw->priv;
Z
Zhu Yi 已提交
3506

3507
	IWL_DEBUG_MACDUMP(priv, "enter\n");
Z
Zhu Yi 已提交
3508

3509
	IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3510
		     ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
Z
Zhu Yi 已提交
3511

3512
	if (iwlagn_tx_skb(priv, skb))
Z
Zhu Yi 已提交
3513 3514
		dev_kfree_skb_any(skb);

3515
	IWL_DEBUG_MACDUMP(priv, "leave\n");
3516
	return NETDEV_TX_OK;
Z
Zhu Yi 已提交
3517 3518
}

3519
void iwl_config_ap(struct iwl_priv *priv, struct ieee80211_vif *vif)
Z
Zhu Yi 已提交
3520
{
3521
	struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
3522
	int ret = 0;
Z
Zhu Yi 已提交
3523

3524 3525
	lockdep_assert_held(&priv->mutex);

3526
	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
Z
Zhu Yi 已提交
3527 3528 3529
		return;

	/* The following should be done only at AP bring up */
3530
	if (!iwl_is_associated_ctx(ctx)) {
Z
Zhu Yi 已提交
3531 3532

		/* RXON - unassoc (to set timing command) */
3533 3534
		ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
		iwlcore_commit_rxon(priv, ctx);
Z
Zhu Yi 已提交
3535 3536

		/* RXON Timing */
3537
		ret = iwl_send_rxon_timing(priv, ctx);
3538
		if (ret)
3539
			IWL_WARN(priv, "RXON timing failed - "
Z
Zhu Yi 已提交
3540 3541
					"Attempting to continue.\n");

3542 3543 3544 3545
		/* AP has all antennas */
		priv->chain_noise_data.active_chains =
			priv->hw_params.valid_rx_ant;
		iwl_set_rxon_ht(priv, &priv->current_ht_config);
3546
		if (priv->cfg->ops->hcmd->set_rxon_chain)
3547
			priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
Z
Zhu Yi 已提交
3548

3549
		ctx->staging.assoc_id = 0;
3550

3551
		if (vif->bss_conf.use_short_preamble)
3552
			ctx->staging.flags |=
Z
Zhu Yi 已提交
3553 3554
				RXON_FLG_SHORT_PREAMBLE_MSK;
		else
3555
			ctx->staging.flags &=
Z
Zhu Yi 已提交
3556 3557
				~RXON_FLG_SHORT_PREAMBLE_MSK;

3558
		if (ctx->staging.flags & RXON_FLG_BAND_24G_MSK) {
3559
			if (vif->bss_conf.use_short_slot)
3560
				ctx->staging.flags |=
Z
Zhu Yi 已提交
3561 3562
					RXON_FLG_SHORT_SLOT_MSK;
			else
3563
				ctx->staging.flags &=
Z
Zhu Yi 已提交
3564 3565
					~RXON_FLG_SHORT_SLOT_MSK;
		}
3566 3567
		/* need to send beacon cmd before committing assoc RXON! */
		iwl_send_beacon_cmd(priv);
Z
Zhu Yi 已提交
3568
		/* restore RXON assoc */
3569 3570
		ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
		iwlcore_commit_rxon(priv, ctx);
3571
	}
3572
	iwl_send_beacon_cmd(priv);
Z
Zhu Yi 已提交
3573 3574 3575 3576 3577 3578

	/* 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... */
}

3579
static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw,
3580 3581 3582 3583
				    struct ieee80211_vif *vif,
				    struct ieee80211_key_conf *keyconf,
				    struct ieee80211_sta *sta,
				    u32 iv32, u16 *phase1key)
3584 3585
{

3586
	struct iwl_priv *priv = hw->priv;
3587 3588
	struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;

3589
	IWL_DEBUG_MAC80211(priv, "enter\n");
3590

3591
	iwl_update_tkip_key(priv, vif_priv->ctx, keyconf, sta,
3592
			    iv32, phase1key);
3593

3594
	IWL_DEBUG_MAC80211(priv, "leave\n");
3595 3596
}

3597
static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3598 3599
			   struct ieee80211_vif *vif,
			   struct ieee80211_sta *sta,
Z
Zhu Yi 已提交
3600 3601
			   struct ieee80211_key_conf *key)
{
3602
	struct iwl_priv *priv = hw->priv;
3603
	struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
3604
	struct iwl_rxon_context *ctx = vif_priv->ctx;
3605 3606 3607
	int ret;
	u8 sta_id;
	bool is_default_wep_key = false;
Z
Zhu Yi 已提交
3608

3609
	IWL_DEBUG_MAC80211(priv, "enter\n");
Z
Zhu Yi 已提交
3610

3611
	if (priv->cfg->mod_params->sw_crypto) {
3612
		IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
Z
Zhu Yi 已提交
3613 3614 3615
		return -EOPNOTSUPP;
	}

3616
	sta_id = iwl_sta_id_or_broadcast(priv, vif_priv->ctx, sta);
3617 3618
	if (sta_id == IWL_INVALID_STATION)
		return -EINVAL;
Z
Zhu Yi 已提交
3619

3620
	mutex_lock(&priv->mutex);
3621
	iwl_scan_cancel_timeout(priv, 100);
3622

J
Johannes Berg 已提交
3623 3624
	/*
	 * If we are getting WEP group key and we didn't receive any key mapping
3625 3626
	 * so far, we are in legacy wep mode (group key only), otherwise we are
	 * in 1X mode.
J
Johannes Berg 已提交
3627 3628
	 * In legacy wep mode, we use another host command to the uCode.
	 */
3629 3630
	if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
	     key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
3631
	    !sta) {
3632
		if (cmd == SET_KEY)
3633
			is_default_wep_key = !ctx->key_mapping_keys;
3634
		else
3635 3636
			is_default_wep_key =
					(key->hw_key_idx == HW_KEY_DEFAULT);
3637
	}
3638

Z
Zhu Yi 已提交
3639
	switch (cmd) {
3640
	case SET_KEY:
3641
		if (is_default_wep_key)
3642
			ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
3643
		else
3644 3645
			ret = iwl_set_dynamic_key(priv, vif_priv->ctx,
						  key, sta_id);
3646

3647
		IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
Z
Zhu Yi 已提交
3648 3649
		break;
	case DISABLE_KEY:
3650
		if (is_default_wep_key)
3651
			ret = iwl_remove_default_wep_key(priv, ctx, key);
3652
		else
3653
			ret = iwl_remove_dynamic_key(priv, ctx, key, sta_id);
3654

3655
		IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
Z
Zhu Yi 已提交
3656 3657
		break;
	default:
3658
		ret = -EINVAL;
Z
Zhu Yi 已提交
3659 3660
	}

3661
	mutex_unlock(&priv->mutex);
3662
	IWL_DEBUG_MAC80211(priv, "leave\n");
Z
Zhu Yi 已提交
3663

3664
	return ret;
Z
Zhu Yi 已提交
3665 3666
}

3667
static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
3668
				struct ieee80211_vif *vif,
3669 3670
				enum ieee80211_ampdu_mlme_action action,
				struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3671 3672
{
	struct iwl_priv *priv = hw->priv;
3673
	int ret = -EINVAL;
3674

3675
	IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
J
Johannes Berg 已提交
3676
		     sta->addr, tid);
3677 3678 3679 3680

	if (!(priv->cfg->sku & IWL_SKU_N))
		return -EACCES;

3681 3682
	mutex_lock(&priv->mutex);

3683 3684
	switch (action) {
	case IEEE80211_AMPDU_RX_START:
3685
		IWL_DEBUG_HT(priv, "start Rx\n");
3686 3687
		ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
		break;
3688
	case IEEE80211_AMPDU_RX_STOP:
3689
		IWL_DEBUG_HT(priv, "stop Rx\n");
3690
		ret = iwl_sta_rx_agg_stop(priv, sta, tid);
3691
		if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3692 3693
			ret = 0;
		break;
3694
	case IEEE80211_AMPDU_TX_START:
3695
		IWL_DEBUG_HT(priv, "start Tx\n");
3696
		ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
W
Wey-Yi Guy 已提交
3697 3698 3699 3700 3701
		if (ret == 0) {
			priv->_agn.agg_tids_count++;
			IWL_DEBUG_HT(priv, "priv->_agn.agg_tids_count = %u\n",
				     priv->_agn.agg_tids_count);
		}
3702
		break;
3703
	case IEEE80211_AMPDU_TX_STOP:
3704
		IWL_DEBUG_HT(priv, "stop Tx\n");
3705
		ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
W
Wey-Yi Guy 已提交
3706 3707 3708 3709 3710
		if ((ret == 0) && (priv->_agn.agg_tids_count > 0)) {
			priv->_agn.agg_tids_count--;
			IWL_DEBUG_HT(priv, "priv->_agn.agg_tids_count = %u\n",
				     priv->_agn.agg_tids_count);
		}
3711
		if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3712
			ret = 0;
J
Johannes Berg 已提交
3713 3714 3715 3716 3717 3718 3719 3720 3721
		if (priv->cfg->use_rts_for_aggregation) {
			struct iwl_station_priv *sta_priv =
				(void *) sta->drv_priv;
			/*
			 * switch off RTS/CTS if it was previously enabled
			 */

			sta_priv->lq_sta.lq.general_params.flags &=
				~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
3722 3723
			iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
					&sta_priv->lq_sta.lq, CMD_ASYNC, false);
J
Johannes Berg 已提交
3724
		}
3725
		break;
3726
	case IEEE80211_AMPDU_TX_OPERATIONAL:
J
Johannes Berg 已提交
3727 3728 3729 3730
		if (priv->cfg->use_rts_for_aggregation) {
			struct iwl_station_priv *sta_priv =
				(void *) sta->drv_priv;

3731 3732 3733 3734
			/*
			 * switch to RTS/CTS if it is the prefer protection
			 * method for HT traffic
			 */
J
Johannes Berg 已提交
3735 3736 3737

			sta_priv->lq_sta.lq.general_params.flags |=
				LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
3738 3739
			iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
					&sta_priv->lq_sta.lq, CMD_ASYNC, false);
3740 3741
		}
		ret = 0;
3742 3743
		break;
	}
3744 3745 3746
	mutex_unlock(&priv->mutex);

	return ret;
3747
}
3748

3749 3750 3751 3752 3753 3754 3755 3756 3757 3758 3759 3760 3761 3762 3763 3764 3765 3766
static void iwl_mac_sta_notify(struct ieee80211_hw *hw,
			       struct ieee80211_vif *vif,
			       enum sta_notify_cmd cmd,
			       struct ieee80211_sta *sta)
{
	struct iwl_priv *priv = hw->priv;
	struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
	int sta_id;

	switch (cmd) {
	case STA_NOTIFY_SLEEP:
		WARN_ON(!sta_priv->client);
		sta_priv->asleep = true;
		if (atomic_read(&sta_priv->pending_frames) > 0)
			ieee80211_sta_block_awake(hw, sta, true);
		break;
	case STA_NOTIFY_AWAKE:
		WARN_ON(!sta_priv->client);
D
Daniel Halperin 已提交
3767 3768
		if (!sta_priv->asleep)
			break;
3769
		sta_priv->asleep = false;
3770
		sta_id = iwl_sta_id(sta);
3771 3772 3773 3774 3775 3776 3777 3778
		if (sta_id != IWL_INVALID_STATION)
			iwl_sta_modify_ps_wake(priv, sta_id);
		break;
	default:
		break;
	}
}

3779 3780 3781 3782 3783 3784
static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
			      struct ieee80211_vif *vif,
			      struct ieee80211_sta *sta)
{
	struct iwl_priv *priv = hw->priv;
	struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
3785
	struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
3786
	bool is_ap = vif->type == NL80211_IFTYPE_STATION;
3787 3788 3789 3790 3791
	int ret;
	u8 sta_id;

	IWL_DEBUG_INFO(priv, "received request to add station %pM\n",
			sta->addr);
3792 3793 3794 3795
	mutex_lock(&priv->mutex);
	IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
			sta->addr);
	sta_priv->common.sta_id = IWL_INVALID_STATION;
3796 3797 3798 3799 3800

	atomic_set(&sta_priv->pending_frames, 0);
	if (vif->type == NL80211_IFTYPE_AP)
		sta_priv->client = true;

3801
	ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
3802
				     is_ap, sta, &sta_id);
3803 3804 3805 3806
	if (ret) {
		IWL_ERR(priv, "Unable to add station %pM (%d)\n",
			sta->addr, ret);
		/* Should we return success if return code is EEXIST ? */
3807
		mutex_unlock(&priv->mutex);
3808 3809 3810
		return ret;
	}

J
Johannes Berg 已提交
3811 3812
	sta_priv->common.sta_id = sta_id;

3813
	/* Initialize rate scaling */
3814
	IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
3815 3816
		       sta->addr);
	iwl_rs_rate_init(priv, sta, sta_id);
3817
	mutex_unlock(&priv->mutex);
3818

J
Johannes Berg 已提交
3819
	return 0;
3820 3821
}

3822 3823 3824 3825 3826 3827
static void iwl_mac_channel_switch(struct ieee80211_hw *hw,
				   struct ieee80211_channel_switch *ch_switch)
{
	struct iwl_priv *priv = hw->priv;
	const struct iwl_channel_info *ch_info;
	struct ieee80211_conf *conf = &hw->conf;
3828
	struct ieee80211_channel *channel = ch_switch->channel;
3829
	struct iwl_ht_config *ht_conf = &priv->current_ht_config;
3830 3831 3832 3833 3834 3835 3836 3837 3838
	/*
	 * MULTI-FIXME
	 * When we add support for multiple interfaces, we need to
	 * revisit this. The channel switch command in the device
	 * only affects the BSS context, but what does that really
	 * mean? And what if we get a CSA on the second interface?
	 * This needs a lot of work.
	 */
	struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
3839 3840 3841 3842 3843 3844 3845 3846 3847 3848 3849 3850
	u16 ch;
	unsigned long flags = 0;

	IWL_DEBUG_MAC80211(priv, "enter\n");

	if (iwl_is_rfkill(priv))
		goto out_exit;

	if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
	    test_bit(STATUS_SCANNING, &priv->status))
		goto out_exit;

3851
	if (!iwl_is_associated_ctx(ctx))
3852 3853 3854 3855 3856 3857 3858 3859 3860
		goto out_exit;

	/* channel switch in progress */
	if (priv->switch_rxon.switch_in_progress == true)
		goto out_exit;

	mutex_lock(&priv->mutex);
	if (priv->cfg->ops->lib->set_channel_switch) {

3861
		ch = channel->hw_value;
3862
		if (le16_to_cpu(ctx->active.channel) != ch) {
3863
			ch_info = iwl_get_channel_info(priv,
3864
						       channel->band,
3865 3866 3867 3868 3869 3870 3871 3872 3873 3874
						       ch);
			if (!is_channel_valid(ch_info)) {
				IWL_DEBUG_MAC80211(priv, "invalid channel\n");
				goto out;
			}
			spin_lock_irqsave(&priv->lock, flags);

			priv->current_ht_config.smps = conf->smps_mode;

			/* Configure HT40 channels */
3875 3876
			ctx->ht.enabled = conf_is_ht(conf);
			if (ctx->ht.enabled) {
3877
				if (conf_is_ht40_minus(conf)) {
3878
					ctx->ht.extension_chan_offset =
3879
						IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3880
					ctx->ht.is_40mhz = true;
3881
				} else if (conf_is_ht40_plus(conf)) {
3882
					ctx->ht.extension_chan_offset =
3883
						IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3884
					ctx->ht.is_40mhz = true;
3885
				} else {
3886
					ctx->ht.extension_chan_offset =
3887
						IEEE80211_HT_PARAM_CHA_SEC_NONE;
3888
					ctx->ht.is_40mhz = false;
3889 3890
				}
			} else
3891
				ctx->ht.is_40mhz = false;
3892

3893 3894
			if ((le16_to_cpu(ctx->staging.channel) != ch))
				ctx->staging.flags = 0;
3895

3896
			iwl_set_rxon_channel(priv, channel, ctx);
3897
			iwl_set_rxon_ht(priv, ht_conf);
3898
			iwl_set_flags_for_band(priv, ctx, channel->band,
3899
					       ctx->vif);
3900 3901 3902 3903 3904 3905 3906 3907 3908 3909 3910 3911 3912 3913 3914 3915
			spin_unlock_irqrestore(&priv->lock, flags);

			iwl_set_rate(priv);
			/*
			 * at this point, staging_rxon has the
			 * configuration for channel switch
			 */
			if (priv->cfg->ops->lib->set_channel_switch(priv,
								    ch_switch))
				priv->switch_rxon.switch_in_progress = false;
		}
	}
out:
	mutex_unlock(&priv->mutex);
out_exit:
	if (!priv->switch_rxon.switch_in_progress)
3916
		ieee80211_chswitch_done(ctx->vif, false);
3917 3918 3919
	IWL_DEBUG_MAC80211(priv, "leave\n");
}

J
Johannes Berg 已提交
3920 3921 3922 3923 3924 3925 3926
static void iwlagn_configure_filter(struct ieee80211_hw *hw,
				    unsigned int changed_flags,
				    unsigned int *total_flags,
				    u64 multicast)
{
	struct iwl_priv *priv = hw->priv;
	__le32 filter_or = 0, filter_nand = 0;
3927
	struct iwl_rxon_context *ctx;
J
Johannes Berg 已提交
3928 3929 3930 3931 3932 3933 3934 3935 3936 3937 3938 3939 3940 3941 3942 3943 3944 3945 3946

#define CHK(test, flag)	do { \
	if (*total_flags & (test))		\
		filter_or |= (flag);		\
	else					\
		filter_nand |= (flag);		\
	} while (0)

	IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
			changed_flags, *total_flags);

	CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
	CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK);
	CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);

#undef CHK

	mutex_lock(&priv->mutex);

3947 3948 3949 3950 3951
	for_each_context(priv, ctx) {
		ctx->staging.filter_flags &= ~filter_nand;
		ctx->staging.filter_flags |= filter_or;
		iwlcore_commit_rxon(priv, ctx);
	}
J
Johannes Berg 已提交
3952 3953 3954 3955 3956 3957 3958 3959 3960 3961 3962 3963 3964

	mutex_unlock(&priv->mutex);

	/*
	 * Receiving all multicast frames is always enabled by the
	 * default flags setup in iwl_connection_init_rx_config()
	 * since we currently do not support programming multicast
	 * filters into the device.
	 */
	*total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
			FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
}

3965 3966 3967 3968 3969 3970 3971 3972 3973 3974 3975 3976 3977 3978 3979 3980 3981 3982 3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 3993 3994 3995 3996 3997 3998 3999 4000 4001 4002
static void iwl_mac_flush(struct ieee80211_hw *hw, bool drop)
{
	struct iwl_priv *priv = hw->priv;

	mutex_lock(&priv->mutex);
	IWL_DEBUG_MAC80211(priv, "enter\n");

	/* do not support "flush" */
	if (!priv->cfg->ops->lib->txfifo_flush)
		goto done;

	if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
		IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
		goto done;
	}
	if (iwl_is_rfkill(priv)) {
		IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
		goto done;
	}

	/*
	 * mac80211 will not push any more frames for transmit
	 * until the flush is completed
	 */
	if (drop) {
		IWL_DEBUG_MAC80211(priv, "send flush command\n");
		if (priv->cfg->ops->lib->txfifo_flush(priv, IWL_DROP_ALL)) {
			IWL_ERR(priv, "flush request fail\n");
			goto done;
		}
	}
	IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
	iwlagn_wait_tx_queue_empty(priv);
done:
	mutex_unlock(&priv->mutex);
	IWL_DEBUG_MAC80211(priv, "leave\n");
}

Z
Zhu Yi 已提交
4003 4004 4005 4006 4007 4008
/*****************************************************************************
 *
 * driver setup and teardown
 *
 *****************************************************************************/

4009
static void iwl_setup_deferred_work(struct iwl_priv *priv)
Z
Zhu Yi 已提交
4010
{
4011
	priv->workqueue = create_singlethread_workqueue(DRV_NAME);
Z
Zhu Yi 已提交
4012 4013 4014

	init_waitqueue_head(&priv->wait_command_queue);

4015 4016 4017
	INIT_WORK(&priv->restart, iwl_bg_restart);
	INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
	INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
4018
	INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4019
	INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
4020
	INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
4021
	INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
4022 4023
	INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
	INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4024 4025

	iwl_setup_scan_deferred_work(priv);
C
Christoph Hellwig 已提交
4026

4027 4028 4029 4030 4031
	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;
4032
	priv->statistics_periodic.function = iwl_bg_statistics_periodic;
Z
Zhu Yi 已提交
4033

4034 4035 4036 4037
	init_timer(&priv->ucode_trace);
	priv->ucode_trace.data = (unsigned long)priv;
	priv->ucode_trace.function = iwl_bg_ucode_trace;

4038 4039 4040 4041 4042 4043 4044
	if (priv->cfg->ops->lib->recover_from_tx_stall) {
		init_timer(&priv->monitor_recover);
		priv->monitor_recover.data = (unsigned long)priv;
		priv->monitor_recover.function =
			priv->cfg->ops->lib->recover_from_tx_stall;
	}

M
Mohamed Abbas 已提交
4045 4046 4047 4048 4049 4050
	if (!priv->cfg->use_isr_legacy)
		tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
			iwl_irq_tasklet, (unsigned long)priv);
	else
		tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
			iwl_irq_tasklet_legacy, (unsigned long)priv);
Z
Zhu Yi 已提交
4051 4052
}

4053
static void iwl_cancel_deferred_work(struct iwl_priv *priv)
Z
Zhu Yi 已提交
4054
{
4055 4056
	if (priv->cfg->ops->lib->cancel_deferred_work)
		priv->cfg->ops->lib->cancel_deferred_work(priv);
Z
Zhu Yi 已提交
4057

4058
	cancel_delayed_work_sync(&priv->init_alive_start);
Z
Zhu Yi 已提交
4059
	cancel_delayed_work(&priv->scan_check);
J
Johannes Berg 已提交
4060
	cancel_work_sync(&priv->start_internal_scan);
Z
Zhu Yi 已提交
4061
	cancel_delayed_work(&priv->alive_start);
4062
	cancel_work_sync(&priv->run_time_calib_work);
Z
Zhu Yi 已提交
4063
	cancel_work_sync(&priv->beacon_update);
4064
	cancel_work_sync(&priv->bt_full_concurrency);
4065
	cancel_work_sync(&priv->bt_runtime_config);
4066
	del_timer_sync(&priv->statistics_periodic);
4067
	del_timer_sync(&priv->ucode_trace);
Z
Zhu Yi 已提交
4068 4069
}

4070 4071 4072 4073 4074 4075 4076 4077 4078 4079 4080 4081 4082 4083 4084 4085 4086 4087 4088 4089 4090 4091 4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102
static void iwl_init_hw_rates(struct iwl_priv *priv,
			      struct ieee80211_rate *rates)
{
	int i;

	for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
		rates[i].bitrate = iwl_rates[i].ieee * 5;
		rates[i].hw_value = i; /* Rate scaling will work on indexes */
		rates[i].hw_value_short = i;
		rates[i].flags = 0;
		if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
			/*
			 * If CCK != 1M then set short preamble rate flag.
			 */
			rates[i].flags |=
				(iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
					0 : IEEE80211_RATE_SHORT_PREAMBLE;
		}
	}
}

static int iwl_init_drv(struct iwl_priv *priv)
{
	int ret;

	priv->ibss_beacon = NULL;

	spin_lock_init(&priv->sta_lock);
	spin_lock_init(&priv->hcmd_lock);

	INIT_LIST_HEAD(&priv->free_frames);

	mutex_init(&priv->mutex);
4103
	mutex_init(&priv->sync_cmd_mutex);
4104 4105 4106 4107 4108 4109

	priv->ieee_channels = NULL;
	priv->ieee_rates = NULL;
	priv->band = IEEE80211_BAND_2GHZ;

	priv->iw_mode = NL80211_IFTYPE_STATION;
J
Johannes Berg 已提交
4110
	priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
4111
	priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
W
Wey-Yi Guy 已提交
4112
	priv->_agn.agg_tids_count = 0;
4113

4114 4115 4116 4117 4118
	/* initialize force reset */
	priv->force_reset[IWL_RF_RESET].reset_duration =
		IWL_DELAY_NEXT_FORCE_RF_RESET;
	priv->force_reset[IWL_FW_RESET].reset_duration =
		IWL_DELAY_NEXT_FORCE_FW_RELOAD;
4119 4120 4121

	/* Choose which receivers/antennas to use */
	if (priv->cfg->ops->hcmd->set_rxon_chain)
4122 4123
		priv->cfg->ops->hcmd->set_rxon_chain(priv,
					&priv->contexts[IWL_RXON_CTX_BSS]);
4124 4125 4126

	iwl_init_scan_params(priv);

4127 4128
	/* init bt coex */
	if (priv->cfg->advanced_bt_coexist) {
W
Wey-Yi Guy 已提交
4129 4130 4131
		priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
		priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
		priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
4132 4133 4134 4135 4136 4137
		priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
		priv->bt_duration = BT_DURATION_LIMIT_DEF;
		priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
		priv->dynamic_agg_thresh = BT_AGG_THRESHOLD_DEF;
	}

4138 4139 4140
	/* Set the tx_power_user_lmt to the lowest power level
	 * this value will get overwritten by channel max power avg
	 * from eeprom */
4141
	priv->tx_power_user_lmt = IWLAGN_TX_POWER_TARGET_POWER_MIN;
4142 4143 4144 4145 4146 4147 4148 4149 4150 4151 4152 4153 4154 4155 4156 4157 4158 4159 4160 4161 4162 4163 4164 4165 4166 4167 4168

	ret = iwl_init_channel_map(priv);
	if (ret) {
		IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
		goto err;
	}

	ret = iwlcore_init_geos(priv);
	if (ret) {
		IWL_ERR(priv, "initializing geos failed: %d\n", ret);
		goto err_free_channel_map;
	}
	iwl_init_hw_rates(priv, priv->ieee_rates);

	return 0;

err_free_channel_map:
	iwl_free_channel_map(priv);
err:
	return ret;
}

static void iwl_uninit_drv(struct iwl_priv *priv)
{
	iwl_calib_free_results(priv);
	iwlcore_free_geos(priv);
	iwl_free_channel_map(priv);
4169
	kfree(priv->scan_cmd);
4170 4171
}

4172 4173 4174 4175 4176 4177 4178
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,
J
Johannes Berg 已提交
4179
	.configure_filter = iwlagn_configure_filter,
4180 4181 4182 4183 4184 4185
	.set_key = iwl_mac_set_key,
	.update_tkip_key = iwl_mac_update_tkip_key,
	.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,
4186 4187
	.hw_scan = iwl_mac_hw_scan,
	.sta_notify = iwl_mac_sta_notify,
4188 4189
	.sta_add = iwlagn_mac_sta_add,
	.sta_remove = iwl_mac_sta_remove,
4190
	.channel_switch = iwl_mac_channel_switch,
4191
	.flush = iwl_mac_flush,
4192
	.tx_last_beacon = iwl_mac_tx_last_beacon,
Z
Zhu Yi 已提交
4193 4194
};

4195 4196 4197 4198 4199
static void iwl_hw_detect(struct iwl_priv *priv)
{
	priv->hw_rev = _iwl_read32(priv, CSR_HW_REV);
	priv->hw_wa_rev = _iwl_read32(priv, CSR_HW_REV_WA_REG);
	pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &priv->rev_id);
W
Wey-Yi Guy 已提交
4200
	IWL_DEBUG_INFO(priv, "HW Revision ID = 0x%X\n", priv->rev_id);
4201 4202
}

4203 4204 4205 4206 4207 4208 4209 4210 4211 4212 4213 4214 4215 4216 4217 4218 4219 4220
static int iwl_set_hw_params(struct iwl_priv *priv)
{
	priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
	priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
	if (priv->cfg->mod_params->amsdu_size_8K)
		priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_8K);
	else
		priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_4K);

	priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;

	if (priv->cfg->mod_params->disable_11n)
		priv->cfg->sku &= ~IWL_SKU_N;

	/* Device-specific setup */
	return priv->cfg->ops->lib->set_hw_params(priv);
}

4221 4222 4223 4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237 4238 4239 4240 4241 4242
static const u8 iwlagn_bss_ac_to_fifo[] = {
	IWL_TX_FIFO_VO,
	IWL_TX_FIFO_VI,
	IWL_TX_FIFO_BE,
	IWL_TX_FIFO_BK,
};

static const u8 iwlagn_bss_ac_to_queue[] = {
	0, 1, 2, 3,
};

static const u8 iwlagn_pan_ac_to_fifo[] = {
	IWL_TX_FIFO_VO_IPAN,
	IWL_TX_FIFO_VI_IPAN,
	IWL_TX_FIFO_BE_IPAN,
	IWL_TX_FIFO_BK_IPAN,
};

static const u8 iwlagn_pan_ac_to_queue[] = {
	7, 6, 5, 4,
};

4243
static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
Z
Zhu Yi 已提交
4244
{
4245
	int err = 0, i;
4246
	struct iwl_priv *priv;
Z
Zhu Yi 已提交
4247
	struct ieee80211_hw *hw;
T
Tomas Winkler 已提交
4248
	struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4249
	unsigned long flags;
4250
	u16 pci_cmd, num_mac;
Z
Zhu Yi 已提交
4251

4252 4253 4254 4255
	/************************
	 * 1. Allocating HW data
	 ************************/

4256 4257
	/* Disabling hardware scan means that mac80211 will perform scans
	 * "the hard way", rather than using device's scan. */
4258
	if (cfg->mod_params->disable_hw_scan) {
4259
		if (iwl_debug_level & IWL_DL_INFO)
4260 4261
			dev_printk(KERN_DEBUG, &(pdev->dev),
				   "Disabling hw_scan\n");
4262
		iwl_hw_ops.hw_scan = NULL;
Z
Zhu Yi 已提交
4263 4264
	}

4265
	hw = iwl_alloc_all(cfg, &iwl_hw_ops);
4266
	if (!hw) {
Z
Zhu Yi 已提交
4267 4268 4269
		err = -ENOMEM;
		goto out;
	}
4270 4271 4272
	priv = hw->priv;
	/* At this point both hw and priv are allocated. */

4273 4274 4275 4276 4277 4278 4279 4280 4281 4282
	/*
	 * The default context is always valid,
	 * more may be discovered when firmware
	 * is loaded.
	 */
	priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);

	for (i = 0; i < NUM_IWL_RXON_CTX; i++)
		priv->contexts[i].ctxid = i;

4283 4284 4285
	priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
	priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
	priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
J
Johannes Berg 已提交
4286
	priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
4287
	priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
4288
	priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
4289 4290
	priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo = iwlagn_bss_ac_to_fifo;
	priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue = iwlagn_bss_ac_to_queue;
J
Johannes Berg 已提交
4291 4292 4293 4294 4295 4296 4297 4298 4299

	priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
	priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd = REPLY_WIPAN_RXON_TIMING;
	priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd = REPLY_WIPAN_RXON_ASSOC;
	priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
	priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
	priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
	priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
	priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
4300 4301 4302
	priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo = iwlagn_pan_ac_to_fifo;
	priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue = iwlagn_pan_ac_to_queue;
	priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
J
Johannes Berg 已提交
4303 4304

	BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
4305

Z
Zhu Yi 已提交
4306 4307
	SET_IEEE80211_DEV(hw, &pdev->dev);

4308
	IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
T
Tomas Winkler 已提交
4309
	priv->cfg = cfg;
Z
Zhu Yi 已提交
4310
	priv->pci_dev = pdev;
4311
	priv->inta_mask = CSR_INI_SET_MASK;
4312

4313 4314 4315 4316 4317
	/* is antenna coupling more than 35dB ? */
	priv->bt_ant_couple_ok =
		(iwlagn_ant_coupling > IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
		true : false;

4318 4319 4320
	/* enable/disable bt channel announcement */
	priv->bt_ch_announce = iwlagn_bt_ch_announce;

4321 4322
	if (iwl_alloc_traffic_mem(priv))
		IWL_ERR(priv, "Not enough memory to generate traffic log\n");
Z
Zhu Yi 已提交
4323

4324 4325 4326
	/**************************
	 * 2. Initializing PCI bus
	 **************************/
4327 4328 4329
	pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 |
				PCIE_LINK_STATE_CLKPM);

4330 4331 4332 4333 4334 4335 4336
	if (pci_enable_device(pdev)) {
		err = -ENODEV;
		goto out_ieee80211_free_hw;
	}

	pci_set_master(pdev);

W
Winkler, Tomas 已提交
4337
	err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
4338
	if (!err)
W
Winkler, Tomas 已提交
4339
		err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
4340
	if (err) {
W
Winkler, Tomas 已提交
4341
		err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4342
		if (!err)
W
Winkler, Tomas 已提交
4343
			err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
4344
		/* both attempts failed: */
4345
		if (err) {
T
Tomas Winkler 已提交
4346
			IWL_WARN(priv, "No suitable DMA available.\n");
4347
			goto out_pci_disable_device;
4348
		}
4349 4350 4351 4352 4353 4354 4355 4356 4357 4358 4359 4360 4361 4362 4363 4364 4365 4366
	}

	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;
	}

4367
	IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
4368
		(unsigned long long) pci_resource_len(pdev, 0));
4369
	IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
4370

4371
	/* these spin locks will be used in apm_ops.init and EEPROM access
M
Mohamed Abbas 已提交
4372 4373 4374
	 * we should init now
	 */
	spin_lock_init(&priv->reg_lock);
4375
	spin_lock_init(&priv->lock);
4376 4377 4378 4379 4380 4381 4382 4383

	/*
	 * stop and reset the on-board processor just in case it is in a
	 * strange state ... like being left stranded by a primary kernel
	 * and this is now the kdump kernel trying to start up
	 */
	iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);

4384
	iwl_hw_detect(priv);
4385
	IWL_INFO(priv, "Detected %s, REV=0x%X\n",
4386
		priv->cfg->name, priv->hw_rev);
4387

4388 4389 4390 4391
	/* 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);

M
Mohamed Abbas 已提交
4392 4393 4394 4395 4396 4397
	iwl_prepare_card_hw(priv);
	if (!priv->hw_ready) {
		IWL_WARN(priv, "Failed, HW not ready\n");
		goto out_iounmap;
	}

T
Tomas Winkler 已提交
4398 4399 4400
	/*****************
	 * 4. Read EEPROM
	 *****************/
4401 4402 4403
	/* Read the EEPROM */
	err = iwl_eeprom_init(priv);
	if (err) {
4404
		IWL_ERR(priv, "Unable to init EEPROM\n");
4405 4406
		goto out_iounmap;
	}
4407 4408
	err = iwl_eeprom_check_version(priv);
	if (err)
4409
		goto out_free_eeprom;
4410

4411
	/* extract MAC Address */
4412 4413 4414 4415 4416 4417 4418 4419 4420 4421 4422
	iwl_eeprom_get_mac(priv, priv->addresses[0].addr);
	IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
	priv->hw->wiphy->addresses = priv->addresses;
	priv->hw->wiphy->n_addresses = 1;
	num_mac = iwl_eeprom_query16(priv, EEPROM_NUM_MAC_ADDRESS);
	if (num_mac > 1) {
		memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
		       ETH_ALEN);
		priv->addresses[1].addr[5]++;
		priv->hw->wiphy->n_addresses++;
	}
4423 4424 4425 4426

	/************************
	 * 5. Setup HW constants
	 ************************/
4427
	if (iwl_set_hw_params(priv)) {
4428
		IWL_ERR(priv, "failed to set hw parameters\n");
4429
		goto out_free_eeprom;
4430 4431 4432
	}

	/*******************
T
Tomas Winkler 已提交
4433
	 * 6. Setup priv
4434
	 *******************/
Z
Zhu Yi 已提交
4435

T
Tomas Winkler 已提交
4436
	err = iwl_init_drv(priv);
4437
	if (err)
R
Ron Rindjunsky 已提交
4438
		goto out_free_eeprom;
4439
	/* At this point both hw and priv are initialized. */
4440 4441

	/********************
4442
	 * 7. Setup services
4443
	 ********************/
4444
	spin_lock_irqsave(&priv->lock, flags);
4445
	iwl_disable_interrupts(priv);
4446
	spin_unlock_irqrestore(&priv->lock, flags);
4447

4448 4449
	pci_enable_msi(priv->pci_dev);

M
Mohamed Abbas 已提交
4450 4451 4452
	iwl_alloc_isr_ict(priv);
	err = request_irq(priv->pci_dev->irq, priv->cfg->ops->lib->isr,
			  IRQF_SHARED, DRV_NAME, priv);
4453 4454 4455 4456
	if (err) {
		IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
		goto out_disable_msi;
	}
4457

4458
	iwl_setup_deferred_work(priv);
4459
	iwl_setup_rx_handlers(priv);
4460

J
Johannes Berg 已提交
4461 4462 4463
	/*********************************************
	 * 8. Enable interrupts and read RFKILL state
	 *********************************************/
T
Tomas Winkler 已提交
4464

4465 4466 4467 4468 4469 4470 4471 4472 4473 4474 4475 4476 4477 4478
	/* 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);

	/* 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);
T
Tomas Winkler 已提交
4479

J
Johannes Berg 已提交
4480 4481
	wiphy_rfkill_set_hw_state(priv->hw->wiphy,
		test_bit(STATUS_RF_KILL_HW, &priv->status));
4482

4483
	iwl_power_initialize(priv);
4484
	iwl_tt_initialize(priv);
J
Johannes Berg 已提交
4485

4486
	init_completion(&priv->_agn.firmware_loading_complete);
4487

4488
	err = iwl_request_firmware(priv, true);
J
Johannes Berg 已提交
4489
	if (err)
4490
		goto out_destroy_workqueue;
J
Johannes Berg 已提交
4491

Z
Zhu Yi 已提交
4492 4493
	return 0;

4494
 out_destroy_workqueue:
4495 4496
	destroy_workqueue(priv->workqueue);
	priv->workqueue = NULL;
4497
	free_irq(priv->pci_dev->irq, priv);
M
Mohamed Abbas 已提交
4498
	iwl_free_isr_ict(priv);
4499 4500
 out_disable_msi:
	pci_disable_msi(priv->pci_dev);
T
Tomas Winkler 已提交
4501
	iwl_uninit_drv(priv);
4502 4503
 out_free_eeprom:
	iwl_eeprom_free(priv);
Z
Zhu Yi 已提交
4504 4505 4506
 out_iounmap:
	pci_iounmap(pdev, priv->hw_base);
 out_pci_release_regions:
4507
	pci_set_drvdata(pdev, NULL);
4508
	pci_release_regions(pdev);
Z
Zhu Yi 已提交
4509 4510 4511
 out_pci_disable_device:
	pci_disable_device(pdev);
 out_ieee80211_free_hw:
4512
	iwl_free_traffic_mem(priv);
4513
	ieee80211_free_hw(priv->hw);
Z
Zhu Yi 已提交
4514 4515 4516 4517
 out:
	return err;
}

4518
static void __devexit iwl_pci_remove(struct pci_dev *pdev)
Z
Zhu Yi 已提交
4519
{
4520
	struct iwl_priv *priv = pci_get_drvdata(pdev);
4521
	unsigned long flags;
Z
Zhu Yi 已提交
4522 4523 4524 4525

	if (!priv)
		return;

4526
	wait_for_completion(&priv->_agn.firmware_loading_complete);
4527

4528
	IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
Z
Zhu Yi 已提交
4529

4530
	iwl_dbgfs_unregister(priv);
4531
	sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
4532

4533 4534
	/* ieee80211_unregister_hw call wil cause iwl_mac_stop to
	 * to be called and iwl_down since we are removing the device
4535 4536 4537
	 * we need to set STATUS_EXIT_PENDING bit.
	 */
	set_bit(STATUS_EXIT_PENDING, &priv->status);
4538 4539 4540
	if (priv->mac80211_registered) {
		ieee80211_unregister_hw(priv->hw);
		priv->mac80211_registered = 0;
4541
	} else {
4542
		iwl_down(priv);
4543 4544
	}

4545 4546 4547 4548 4549 4550 4551 4552 4553
	/*
	 * Make sure device is reset to low power before unloading driver.
	 * This may be redundant with iwl_down(), but there are paths to
	 * run iwl_down() without calling apm_ops.stop(), and there are
	 * paths to avoid running iwl_down() at all before leaving driver.
	 * This (inexpensive) call *makes sure* device is reset.
	 */
	priv->cfg->ops->lib->apm_ops.stop(priv);

4554 4555
	iwl_tt_exit(priv);

4556 4557 4558 4559
	/* make sure we flush any pending irq or
	 * tasklet for the driver
	 */
	spin_lock_irqsave(&priv->lock, flags);
4560
	iwl_disable_interrupts(priv);
4561 4562 4563 4564
	spin_unlock_irqrestore(&priv->lock, flags);

	iwl_synchronize_irq(priv);

4565
	iwl_dealloc_ucode_pci(priv);
Z
Zhu Yi 已提交
4566 4567

	if (priv->rxq.bd)
4568
		iwlagn_rx_queue_free(priv, &priv->rxq);
4569
	iwlagn_hw_txq_ctx_free(priv);
Z
Zhu Yi 已提交
4570

4571
	iwl_eeprom_free(priv);
Z
Zhu Yi 已提交
4572 4573


M
Mohamed Abbas 已提交
4574 4575 4576
	/*netif_stop_queue(dev); */
	flush_workqueue(priv->workqueue);

4577
	/* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
Z
Zhu Yi 已提交
4578 4579 4580 4581
	 * priv->workqueue... so we can't take down the workqueue
	 * until now... */
	destroy_workqueue(priv->workqueue);
	priv->workqueue = NULL;
4582
	iwl_free_traffic_mem(priv);
Z
Zhu Yi 已提交
4583

4584 4585
	free_irq(priv->pci_dev->irq, priv);
	pci_disable_msi(priv->pci_dev);
Z
Zhu Yi 已提交
4586 4587 4588 4589 4590
	pci_iounmap(pdev, priv->hw_base);
	pci_release_regions(pdev);
	pci_disable_device(pdev);
	pci_set_drvdata(pdev, NULL);

T
Tomas Winkler 已提交
4591
	iwl_uninit_drv(priv);
Z
Zhu Yi 已提交
4592

M
Mohamed Abbas 已提交
4593 4594
	iwl_free_isr_ict(priv);

Z
Zhu Yi 已提交
4595 4596 4597 4598 4599 4600 4601 4602 4603 4604 4605 4606 4607
	if (priv->ibss_beacon)
		dev_kfree_skb(priv->ibss_beacon);

	ieee80211_free_hw(priv->hw);
}


/*****************************************************************************
 *
 * driver and module entry point
 *
 *****************************************************************************/

4608
/* Hardware specific file defines the PCI IDs table for that hardware module */
4609
static DEFINE_PCI_DEVICE_TABLE(iwl_hw_card_ids) = {
T
Tomas Winkler 已提交
4610
#ifdef CONFIG_IWL4965
4611 4612
	{IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
	{IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
T
Tomas Winkler 已提交
4613
#endif /* CONFIG_IWL4965 */
4614
#ifdef CONFIG_IWL5000
4615 4616 4617 4618 4619 4620 4621 4622 4623 4624 4625 4626 4627 4628 4629 4630 4631 4632 4633 4634 4635 4636 4637 4638 4639 4640 4641 4642 4643 4644 4645 4646 4647 4648 4649 4650 4651 4652 4653 4654 4655 4656 4657 4658 4659 4660 4661 4662 4663 4664 4665 4666 4667 4668 4669 4670 4671
/* 5100 Series WiFi */
	{IWL_PCI_DEVICE(0x4232, 0x1201, iwl5100_agn_cfg)}, /* Mini Card */
	{IWL_PCI_DEVICE(0x4232, 0x1301, iwl5100_agn_cfg)}, /* Half Mini Card */
	{IWL_PCI_DEVICE(0x4232, 0x1204, iwl5100_agn_cfg)}, /* Mini Card */
	{IWL_PCI_DEVICE(0x4232, 0x1304, iwl5100_agn_cfg)}, /* Half Mini Card */
	{IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bgn_cfg)}, /* Mini Card */
	{IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bgn_cfg)}, /* Half Mini Card */
	{IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)}, /* Mini Card */
	{IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)}, /* Half Mini Card */
	{IWL_PCI_DEVICE(0x4232, 0x1221, iwl5100_agn_cfg)}, /* Mini Card */
	{IWL_PCI_DEVICE(0x4232, 0x1321, iwl5100_agn_cfg)}, /* Half Mini Card */
	{IWL_PCI_DEVICE(0x4232, 0x1224, iwl5100_agn_cfg)}, /* Mini Card */
	{IWL_PCI_DEVICE(0x4232, 0x1324, iwl5100_agn_cfg)}, /* Half Mini Card */
	{IWL_PCI_DEVICE(0x4232, 0x1225, iwl5100_bgn_cfg)}, /* Mini Card */
	{IWL_PCI_DEVICE(0x4232, 0x1325, iwl5100_bgn_cfg)}, /* Half Mini Card */
	{IWL_PCI_DEVICE(0x4232, 0x1226, iwl5100_abg_cfg)}, /* Mini Card */
	{IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)}, /* Half Mini Card */
	{IWL_PCI_DEVICE(0x4237, 0x1211, iwl5100_agn_cfg)}, /* Mini Card */
	{IWL_PCI_DEVICE(0x4237, 0x1311, iwl5100_agn_cfg)}, /* Half Mini Card */
	{IWL_PCI_DEVICE(0x4237, 0x1214, iwl5100_agn_cfg)}, /* Mini Card */
	{IWL_PCI_DEVICE(0x4237, 0x1314, iwl5100_agn_cfg)}, /* Half Mini Card */
	{IWL_PCI_DEVICE(0x4237, 0x1215, iwl5100_bgn_cfg)}, /* Mini Card */
	{IWL_PCI_DEVICE(0x4237, 0x1315, iwl5100_bgn_cfg)}, /* Half Mini Card */
	{IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)}, /* Mini Card */
	{IWL_PCI_DEVICE(0x4237, 0x1316, iwl5100_abg_cfg)}, /* Half Mini Card */

/* 5300 Series WiFi */
	{IWL_PCI_DEVICE(0x4235, 0x1021, iwl5300_agn_cfg)}, /* Mini Card */
	{IWL_PCI_DEVICE(0x4235, 0x1121, iwl5300_agn_cfg)}, /* Half Mini Card */
	{IWL_PCI_DEVICE(0x4235, 0x1024, iwl5300_agn_cfg)}, /* Mini Card */
	{IWL_PCI_DEVICE(0x4235, 0x1124, iwl5300_agn_cfg)}, /* Half Mini Card */
	{IWL_PCI_DEVICE(0x4235, 0x1001, iwl5300_agn_cfg)}, /* Mini Card */
	{IWL_PCI_DEVICE(0x4235, 0x1101, iwl5300_agn_cfg)}, /* Half Mini Card */
	{IWL_PCI_DEVICE(0x4235, 0x1004, iwl5300_agn_cfg)}, /* Mini Card */
	{IWL_PCI_DEVICE(0x4235, 0x1104, iwl5300_agn_cfg)}, /* Half Mini Card */
	{IWL_PCI_DEVICE(0x4236, 0x1011, iwl5300_agn_cfg)}, /* Mini Card */
	{IWL_PCI_DEVICE(0x4236, 0x1111, iwl5300_agn_cfg)}, /* Half Mini Card */
	{IWL_PCI_DEVICE(0x4236, 0x1014, iwl5300_agn_cfg)}, /* Mini Card */
	{IWL_PCI_DEVICE(0x4236, 0x1114, iwl5300_agn_cfg)}, /* Half Mini Card */

/* 5350 Series WiFi/WiMax */
	{IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)}, /* Mini Card */
	{IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)}, /* Mini Card */
	{IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)}, /* Mini Card */

/* 5150 Series Wifi/WiMax */
	{IWL_PCI_DEVICE(0x423C, 0x1201, iwl5150_agn_cfg)}, /* Mini Card */
	{IWL_PCI_DEVICE(0x423C, 0x1301, iwl5150_agn_cfg)}, /* Half Mini Card */
	{IWL_PCI_DEVICE(0x423C, 0x1206, iwl5150_abg_cfg)}, /* Mini Card */
	{IWL_PCI_DEVICE(0x423C, 0x1306, iwl5150_abg_cfg)}, /* Half Mini Card */
	{IWL_PCI_DEVICE(0x423C, 0x1221, iwl5150_agn_cfg)}, /* Mini Card */
	{IWL_PCI_DEVICE(0x423C, 0x1321, iwl5150_agn_cfg)}, /* Half Mini Card */

	{IWL_PCI_DEVICE(0x423D, 0x1211, iwl5150_agn_cfg)}, /* Mini Card */
	{IWL_PCI_DEVICE(0x423D, 0x1311, iwl5150_agn_cfg)}, /* Half Mini Card */
	{IWL_PCI_DEVICE(0x423D, 0x1216, iwl5150_abg_cfg)}, /* Mini Card */
	{IWL_PCI_DEVICE(0x423D, 0x1316, iwl5150_abg_cfg)}, /* Half Mini Card */
4672 4673 4674 4675 4676 4677 4678 4679 4680 4681 4682 4683

/* 6x00 Series */
	{IWL_PCI_DEVICE(0x422B, 0x1101, iwl6000_3agn_cfg)},
	{IWL_PCI_DEVICE(0x422B, 0x1121, iwl6000_3agn_cfg)},
	{IWL_PCI_DEVICE(0x422C, 0x1301, iwl6000i_2agn_cfg)},
	{IWL_PCI_DEVICE(0x422C, 0x1306, iwl6000i_2abg_cfg)},
	{IWL_PCI_DEVICE(0x422C, 0x1307, iwl6000i_2bg_cfg)},
	{IWL_PCI_DEVICE(0x422C, 0x1321, iwl6000i_2agn_cfg)},
	{IWL_PCI_DEVICE(0x422C, 0x1326, iwl6000i_2abg_cfg)},
	{IWL_PCI_DEVICE(0x4238, 0x1111, iwl6000_3agn_cfg)},
	{IWL_PCI_DEVICE(0x4239, 0x1311, iwl6000i_2agn_cfg)},
	{IWL_PCI_DEVICE(0x4239, 0x1316, iwl6000i_2abg_cfg)},
4684

4685 4686 4687 4688
/* 6x00 Series Gen2a */
	{IWL_PCI_DEVICE(0x0082, 0x1201, iwl6000g2a_2agn_cfg)},
	{IWL_PCI_DEVICE(0x0085, 0x1211, iwl6000g2a_2agn_cfg)},
	{IWL_PCI_DEVICE(0x0082, 0x1221, iwl6000g2a_2agn_cfg)},
4689 4690 4691 4692
	{IWL_PCI_DEVICE(0x0082, 0x1206, iwl6000g2a_2abg_cfg)},
	{IWL_PCI_DEVICE(0x0085, 0x1216, iwl6000g2a_2abg_cfg)},
	{IWL_PCI_DEVICE(0x0082, 0x1226, iwl6000g2a_2abg_cfg)},
	{IWL_PCI_DEVICE(0x0082, 0x1207, iwl6000g2a_2bg_cfg)},
4693 4694 4695 4696 4697 4698 4699
	{IWL_PCI_DEVICE(0x0082, 0x1301, iwl6000g2a_2agn_cfg)},
	{IWL_PCI_DEVICE(0x0082, 0x1306, iwl6000g2a_2abg_cfg)},
	{IWL_PCI_DEVICE(0x0082, 0x1307, iwl6000g2a_2bg_cfg)},
	{IWL_PCI_DEVICE(0x0082, 0x1321, iwl6000g2a_2agn_cfg)},
	{IWL_PCI_DEVICE(0x0082, 0x1326, iwl6000g2a_2abg_cfg)},
	{IWL_PCI_DEVICE(0x0085, 0x1311, iwl6000g2a_2agn_cfg)},
	{IWL_PCI_DEVICE(0x0085, 0x1316, iwl6000g2a_2abg_cfg)},
4700 4701 4702 4703 4704 4705 4706 4707 4708 4709 4710 4711 4712

/* 6x00 Series Gen2b */
	{IWL_PCI_DEVICE(0x008F, 0x5105, iwl6000g2b_bgn_cfg)},
	{IWL_PCI_DEVICE(0x0090, 0x5115, iwl6000g2b_bgn_cfg)},
	{IWL_PCI_DEVICE(0x008F, 0x5125, iwl6000g2b_bgn_cfg)},
	{IWL_PCI_DEVICE(0x008F, 0x5107, iwl6000g2b_bg_cfg)},
	{IWL_PCI_DEVICE(0x008F, 0x5201, iwl6000g2b_2agn_cfg)},
	{IWL_PCI_DEVICE(0x0090, 0x5211, iwl6000g2b_2agn_cfg)},
	{IWL_PCI_DEVICE(0x008F, 0x5221, iwl6000g2b_2agn_cfg)},
	{IWL_PCI_DEVICE(0x008F, 0x5206, iwl6000g2b_2abg_cfg)},
	{IWL_PCI_DEVICE(0x0090, 0x5216, iwl6000g2b_2abg_cfg)},
	{IWL_PCI_DEVICE(0x008F, 0x5226, iwl6000g2b_2abg_cfg)},
	{IWL_PCI_DEVICE(0x008F, 0x5207, iwl6000g2b_2bg_cfg)},
4713 4714 4715 4716 4717 4718 4719 4720 4721 4722 4723 4724 4725 4726 4727 4728 4729
	{IWL_PCI_DEVICE(0x008A, 0x5301, iwl6000g2b_bgn_cfg)},
	{IWL_PCI_DEVICE(0x008A, 0x5305, iwl6000g2b_bgn_cfg)},
	{IWL_PCI_DEVICE(0x008A, 0x5307, iwl6000g2b_bg_cfg)},
	{IWL_PCI_DEVICE(0x008A, 0x5321, iwl6000g2b_bgn_cfg)},
	{IWL_PCI_DEVICE(0x008A, 0x5325, iwl6000g2b_bgn_cfg)},
	{IWL_PCI_DEVICE(0x008B, 0x5311, iwl6000g2b_bgn_cfg)},
	{IWL_PCI_DEVICE(0x008B, 0x5315, iwl6000g2b_bgn_cfg)},
	{IWL_PCI_DEVICE(0x0090, 0x5211, iwl6000g2b_2agn_cfg)},
	{IWL_PCI_DEVICE(0x0090, 0x5215, iwl6000g2b_2bgn_cfg)},
	{IWL_PCI_DEVICE(0x0090, 0x5216, iwl6000g2b_2abg_cfg)},
	{IWL_PCI_DEVICE(0x0091, 0x5201, iwl6000g2b_2agn_cfg)},
	{IWL_PCI_DEVICE(0x0091, 0x5205, iwl6000g2b_2bgn_cfg)},
	{IWL_PCI_DEVICE(0x0091, 0x5206, iwl6000g2b_2abg_cfg)},
	{IWL_PCI_DEVICE(0x0091, 0x5207, iwl6000g2b_2bg_cfg)},
	{IWL_PCI_DEVICE(0x0091, 0x5221, iwl6000g2b_2agn_cfg)},
	{IWL_PCI_DEVICE(0x0091, 0x5225, iwl6000g2b_2bgn_cfg)},
	{IWL_PCI_DEVICE(0x0091, 0x5226, iwl6000g2b_2abg_cfg)},
4730 4731 4732 4733 4734 4735 4736 4737 4738

/* 6x50 WiFi/WiMax Series */
	{IWL_PCI_DEVICE(0x0087, 0x1301, iwl6050_2agn_cfg)},
	{IWL_PCI_DEVICE(0x0087, 0x1306, iwl6050_2abg_cfg)},
	{IWL_PCI_DEVICE(0x0087, 0x1321, iwl6050_2agn_cfg)},
	{IWL_PCI_DEVICE(0x0087, 0x1326, iwl6050_2abg_cfg)},
	{IWL_PCI_DEVICE(0x0089, 0x1311, iwl6050_2agn_cfg)},
	{IWL_PCI_DEVICE(0x0089, 0x1316, iwl6050_2abg_cfg)},

4739 4740 4741 4742 4743 4744 4745 4746
/* 6x50 WiFi/WiMax Series Gen2 */
	{IWL_PCI_DEVICE(0x0885, 0x1305, iwl6050g2_bgn_cfg)},
	{IWL_PCI_DEVICE(0x0885, 0x1306, iwl6050g2_bgn_cfg)},
	{IWL_PCI_DEVICE(0x0885, 0x1325, iwl6050g2_bgn_cfg)},
	{IWL_PCI_DEVICE(0x0885, 0x1326, iwl6050g2_bgn_cfg)},
	{IWL_PCI_DEVICE(0x0886, 0x1315, iwl6050g2_bgn_cfg)},
	{IWL_PCI_DEVICE(0x0886, 0x1316, iwl6050g2_bgn_cfg)},

4747
/* 1000 Series WiFi */
4748 4749 4750 4751 4752 4753 4754 4755 4756 4757 4758 4759
	{IWL_PCI_DEVICE(0x0083, 0x1205, iwl1000_bgn_cfg)},
	{IWL_PCI_DEVICE(0x0083, 0x1305, iwl1000_bgn_cfg)},
	{IWL_PCI_DEVICE(0x0083, 0x1225, iwl1000_bgn_cfg)},
	{IWL_PCI_DEVICE(0x0083, 0x1325, iwl1000_bgn_cfg)},
	{IWL_PCI_DEVICE(0x0084, 0x1215, iwl1000_bgn_cfg)},
	{IWL_PCI_DEVICE(0x0084, 0x1315, iwl1000_bgn_cfg)},
	{IWL_PCI_DEVICE(0x0083, 0x1206, iwl1000_bg_cfg)},
	{IWL_PCI_DEVICE(0x0083, 0x1306, iwl1000_bg_cfg)},
	{IWL_PCI_DEVICE(0x0083, 0x1226, iwl1000_bg_cfg)},
	{IWL_PCI_DEVICE(0x0083, 0x1326, iwl1000_bg_cfg)},
	{IWL_PCI_DEVICE(0x0084, 0x1216, iwl1000_bg_cfg)},
	{IWL_PCI_DEVICE(0x0084, 0x1316, iwl1000_bg_cfg)},
4760
#endif /* CONFIG_IWL5000 */
T
Tomas Winkler 已提交
4761

4762 4763 4764 4765 4766
	{0}
};
MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);

static struct pci_driver iwl_driver = {
Z
Zhu Yi 已提交
4767
	.name = DRV_NAME,
4768
	.id_table = iwl_hw_card_ids,
4769 4770
	.probe = iwl_pci_probe,
	.remove = __devexit_p(iwl_pci_remove),
Z
Zhu Yi 已提交
4771
#ifdef CONFIG_PM
4772 4773
	.suspend = iwl_pci_suspend,
	.resume = iwl_pci_resume,
Z
Zhu Yi 已提交
4774 4775 4776
#endif
};

4777
static int __init iwl_init(void)
Z
Zhu Yi 已提交
4778 4779 4780
{

	int ret;
4781 4782
	pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
	pr_info(DRV_COPYRIGHT "\n");
4783

4784
	ret = iwlagn_rate_control_register();
4785
	if (ret) {
4786
		pr_err("Unable to register rate control algorithm: %d\n", ret);
4787 4788 4789
		return ret;
	}

4790
	ret = pci_register_driver(&iwl_driver);
Z
Zhu Yi 已提交
4791
	if (ret) {
4792
		pr_err("Unable to initialize PCI module\n");
4793
		goto error_register;
Z
Zhu Yi 已提交
4794 4795 4796
	}

	return ret;
4797 4798

error_register:
4799
	iwlagn_rate_control_unregister();
4800
	return ret;
Z
Zhu Yi 已提交
4801 4802
}

4803
static void __exit iwl_exit(void)
Z
Zhu Yi 已提交
4804
{
4805
	pci_unregister_driver(&iwl_driver);
4806
	iwlagn_rate_control_unregister();
Z
Zhu Yi 已提交
4807 4808
}

4809 4810
module_exit(iwl_exit);
module_init(iwl_init);
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#ifdef CONFIG_IWLWIFI_DEBUG
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module_param_named(debug50, iwl_debug_level, uint, S_IRUGO);
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MODULE_PARM_DESC(debug50, "50XX debug output mask (deprecated)");
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module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(debug, "debug output mask");
#endif

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module_param_named(swcrypto50, iwlagn_mod_params.sw_crypto, bool, S_IRUGO);
MODULE_PARM_DESC(swcrypto50,
		 "using crypto in software (default 0 [hardware]) (deprecated)");
module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
module_param_named(queues_num50,
		   iwlagn_mod_params.num_of_queues, int, S_IRUGO);
MODULE_PARM_DESC(queues_num50,
		 "number of hw queues in 50xx series (deprecated)");
module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO);
MODULE_PARM_DESC(queues_num, "number of hw queues.");
module_param_named(11n_disable50, iwlagn_mod_params.disable_11n, int, S_IRUGO);
MODULE_PARM_DESC(11n_disable50, "disable 50XX 11n functionality (deprecated)");
module_param_named(11n_disable, iwlagn_mod_params.disable_11n, int, S_IRUGO);
MODULE_PARM_DESC(11n_disable, "disable 11n functionality");
module_param_named(amsdu_size_8K50, iwlagn_mod_params.amsdu_size_8K,
		   int, S_IRUGO);
MODULE_PARM_DESC(amsdu_size_8K50,
		 "enable 8K amsdu size in 50XX series (deprecated)");
module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
		   int, S_IRUGO);
MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
module_param_named(fw_restart50, iwlagn_mod_params.restart_fw, int, S_IRUGO);
MODULE_PARM_DESC(fw_restart50,
		 "restart firmware in case of error (deprecated)");
module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
module_param_named(
	disable_hw_scan, iwlagn_mod_params.disable_hw_scan, int, S_IRUGO);
MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
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module_param_named(ucode_alternative, iwlagn_wanted_ucode_alternative, int,
		   S_IRUGO);
MODULE_PARM_DESC(ucode_alternative,
		 "specify ucode alternative to use from ucode file");
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module_param_named(antenna_coupling, iwlagn_ant_coupling, int, S_IRUGO);
MODULE_PARM_DESC(antenna_coupling,
		 "specify antenna coupling in dB (defualt: 0 dB)");
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module_param_named(bt_ch_announce, iwlagn_bt_ch_announce, bool, S_IRUGO);
MODULE_PARM_DESC(bt_ch_announce,
		 "Enable BT channel announcement mode (default: enable)");