iwl-agn.c 132.9 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-agn-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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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,
				 int left)
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{
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	lockdep_assert_held(&priv->mutex);

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	if (!priv->beacon_skb)
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		return 0;

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

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	memcpy(hdr, priv->beacon_skb->data, priv->beacon_skb->len);
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	return priv->beacon_skb->len;
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}

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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,
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			       struct iwl_tx_beacon_cmd *tx_beacon_cmd,
			       u8 *beacon, u32 frame_size)
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{
	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");
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		return 0;
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	}

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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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	if (!frame_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,
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			   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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int iwlagn_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];
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	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;
}

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/*
 * 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
 *
 ******************************************************************************/
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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);
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	struct iwl_alive_resp *palive;
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	struct delayed_work *pwork;

	palive = &pkt->u.alive_frame;

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	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) {
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		IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
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		memcpy(&priv->card_alive_init,
		       &pkt->u.alive_frame,
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		       sizeof(struct iwl_init_alive_resp));
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		pwork = &priv->init_alive_start;
	} else {
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		IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
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		memcpy(&priv->card_alive, &pkt->u.alive_frame,
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		       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
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		IWL_WARN(priv, "uCode did not respond OK.\n");
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}

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

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	mutex_lock(&priv->mutex);
	if (!priv->beacon_ctx) {
		IWL_ERR(priv, "updating beacon w/o beacon context!\n");
		goto out;
	}
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	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;
	}

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	/* 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) {
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		IWL_ERR(priv, "update beacon failed -- keeping old\n");
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		goto out;
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	}

	/* new beacon skb is allocated every time; dispose previous.*/
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	dev_kfree_skb(priv->beacon_skb);
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	priv->beacon_skb = beacon;
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	iwlagn_send_beacon_cmd(priv);
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 out:
	mutex_unlock(&priv->mutex);
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}

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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);
}

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static void iwl_bg_bt_full_concurrency(struct work_struct *work)
{
	struct iwl_priv *priv =
		container_of(work, struct iwl_priv, bt_full_concurrency);
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	struct iwl_rxon_context *ctx;
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	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
	 */
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	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);
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	priv->cfg->ops->hcmd->send_bt_config(priv);
}

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/**
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 * iwl_bg_statistics_periodic - Timer callback to queue statistics
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 *
 * 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.
 */
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static void iwl_bg_statistics_periodic(unsigned long data)
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{
	struct iwl_priv *priv = (struct iwl_priv *)data;

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

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

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	iwl_send_statistics_request(priv, CMD_ASYNC, false);
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}

576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622

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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static void iwl_continuous_event_trace(struct iwl_priv *priv)
624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700
{
	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));
	}
}

701
static void iwl_rx_beacon_notif(struct iwl_priv *priv,
702
				struct iwl_rx_mem_buffer *rxb)
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{
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	struct iwl_rx_packet *pkt = rxb_addr(rxb);
705 706
	struct iwl4965_beacon_notif *beacon =
		(struct iwl4965_beacon_notif *)pkt->u.raw;
707
#ifdef CONFIG_IWLWIFI_DEBUG
708
	u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
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710
	IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
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		"tsf %d %d rate %d\n",
712
		le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
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		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

719 720
	priv->ibss_manager = le32_to_cpu(beacon->ibss_mgr_status);

721
	if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
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		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 */
727
static void iwl_rx_card_state_notif(struct iwl_priv *priv,
728
				    struct iwl_rx_mem_buffer *rxb)
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{
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	struct iwl_rx_packet *pkt = rxb_addr(rxb);
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	u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
	unsigned long status = priv->status;

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	IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s CT:%s\n",
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			  (flags & HW_CARD_DISABLED) ? "Kill" : "On",
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			  (flags & SW_CARD_DISABLED) ? "Kill" : "On",
			  (flags & CT_CARD_DISABLED) ?
			  "Reached" : "Not reached");
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	if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
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		     CT_CARD_DISABLED)) {
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742

743
		iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
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			    CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);

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		iwl_write_direct32(priv, HBUS_TARG_MBX_C,
					HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
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		if (!(flags & RXON_CARD_DISABLED)) {
750
			iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
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				    CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
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			iwl_write_direct32(priv, HBUS_TARG_MBX_C,
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					HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
		}
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755
		if (flags & CT_CARD_DISABLED)
756
			iwl_tt_enter_ct_kill(priv);
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	}
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758
	if (!(flags & CT_CARD_DISABLED))
759
		iwl_tt_exit_ct_kill(priv);
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	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))
768
		iwl_scan_cancel(priv);
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	if ((test_bit(STATUS_RF_KILL_HW, &status) !=
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	     test_bit(STATUS_RF_KILL_HW, &priv->status)))
		wiphy_rfkill_set_hw_state(priv->hw->wiphy,
			test_bit(STATUS_RF_KILL_HW, &priv->status));
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	else
		wake_up_interruptible(&priv->wait_command_queue);
}

778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795
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);
	}
}

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/**
797
 * iwl_setup_rx_handlers - Initialize Rx handler callbacks
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 *
 * 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.
 */
805
static void iwl_setup_rx_handlers(struct iwl_priv *priv)
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{
807
	priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
808 809
	priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
	priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
810 811
	priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
			iwl_rx_spectrum_measure_notif;
812
	priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
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	priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
814 815
	    iwl_rx_pm_debug_statistics_notif;
	priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
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817 818 819 820
	/*
	 * 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.
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	 */
822
	priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_reply_statistics;
823
	priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
824 825 826

	iwl_setup_rx_scan_handlers(priv);

827
	/* status change handler */
828
	priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
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830 831
	priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
	    iwl_rx_missed_beacon_notif;
832
	/* Rx handlers */
833 834
	priv->rx_handlers[REPLY_RX_PHY_CMD] = iwlagn_rx_reply_rx_phy;
	priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwlagn_rx_reply_rx;
835
	/* block ack */
836
	priv->rx_handlers[REPLY_COMPRESSED_BA] = iwlagn_rx_reply_compressed_ba;
837
	/* Set up hardware specific Rx handlers */
838
	priv->cfg->ops->lib->rx_handler_setup(priv);
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}

/**
842
 * iwl_rx_handle - Main entry function for receiving responses from uCode
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 *
 * Uses the priv->rx_handlers callback function array to invoke
 * the appropriate handlers, including command responses,
 * frame-received notifications, and other notifications.
 */
848
void iwl_rx_handle(struct iwl_priv *priv)
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849
{
850
	struct iwl_rx_mem_buffer *rxb;
851
	struct iwl_rx_packet *pkt;
852
	struct iwl_rx_queue *rxq = &priv->rxq;
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853 854 855
	u32 r, i;
	int reclaim;
	unsigned long flags;
856
	u8 fill_rx = 0;
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857
	u32 count = 8;
858
	int total_empty;
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859

860 861
	/* uCode's read index (stored in shared DRAM) indicates the last Rx
	 * buffer that the driver may process (last buffer filled by ucode). */
862
	r = le16_to_cpu(rxq->rb_stts->closed_rb_num) &  0x0FFF;
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863 864 865 866
	i = rxq->read;

	/* Rx interrupt, but nothing sent from uCode */
	if (i == r)
867
		IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
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868

869
	/* calculate total frames need to be restock after handling RX */
870
	total_empty = r - rxq->write_actual;
871 872 873 874
	if (total_empty < 0)
		total_empty += RX_QUEUE_SIZE;

	if (total_empty > (RX_QUEUE_SIZE / 2))
875 876
		fill_rx = 1;

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877
	while (i != r) {
J
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878 879
		int len;

Z
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880 881
		rxb = rxq->queue[i];

882
		/* If an RXB doesn't have a Rx queue slot associated with it,
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883 884 885 886 887 888
		 * 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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893

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894 895 896
		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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898 899 900 901 902 903 904 905
		/* 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) &&
906
			(pkt->hdr.cmd != REPLY_RX) &&
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			(pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
908
			(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
914
		 *   rx_handlers table.  See iwl_setup_rx_handlers() */
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		if (priv->rx_handlers[pkt->hdr.cmd]) {
916
			IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r,
917
				i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
918
			priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
919
			priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
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		} else {
			/* No handling needed */
922
			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);
		}

928 929 930 931 932 933 934
		/*
		 * 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 */
939
			if (rxb->page)
940
				iwl_tx_cmd_complete(priv, rxb);
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			else
942
				IWL_WARN(priv, "Claim null rxb?\n");
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		}

945 946 947 948
		/* 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) {
950 951 952 953 954 955 956
			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);
959

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		i = (i + 1) & RX_QUEUE_MASK;
961 962 963 964 965
		/* If there are a lot of unused frames,
		 * restock the Rx queue so ucode wont assert. */
		if (fill_rx) {
			count++;
			if (count >= 8) {
966
				rxq->read = i;
967
				iwlagn_rx_replenish_now(priv);
968 969 970
				count = 0;
			}
		}
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	}

	/* Backtrack one entry */
974
	rxq->read = i;
975
	if (fill_rx)
976
		iwlagn_rx_replenish_now(priv);
977
	else
978
		iwlagn_rx_queue_restock(priv);
979 980
}

981 982 983
/* call this function to flush any scheduled tasklet */
static inline void iwl_synchronize_irq(struct iwl_priv *priv)
{
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984
	/* wait to make sure we flush pending tasklet*/
985 986 987 988
	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;
994
	u32 i;
995
#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. */
1004 1005
	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. */
1010 1011
	inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
	iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
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1013
#ifdef CONFIG_IWLWIFI_DEBUG
1014
	if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1015
		/* just for debug */
1016
		inta_mask = iwl_read32(priv, CSR_INT_MASK);
1017
		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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1024 1025 1026 1027
	/* 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. */
T
Tomas Winkler 已提交
1028
	if (inta_fh & CSR49_FH_INT_RX_MASK)
Z
Zhu Yi 已提交
1029
		inta |= CSR_INT_BIT_FH_RX;
T
Tomas Winkler 已提交
1030
	if (inta_fh & CSR49_FH_INT_TX_MASK)
Z
Zhu Yi 已提交
1031 1032 1033 1034
		inta |= CSR_INT_BIT_FH_TX;

	/* Now service all interrupt bits discovered above. */
	if (inta & CSR_INT_BIT_HW_ERR) {
1035
		IWL_ERR(priv, "Hardware error detected.  Restarting.\n");
Z
Zhu Yi 已提交
1036 1037

		/* Tell the device to stop sending interrupts */
1038
		iwl_disable_interrupts(priv);
Z
Zhu Yi 已提交
1039

1040
		priv->isr_stats.hw++;
1041
		iwl_irq_handle_error(priv);
Z
Zhu Yi 已提交
1042 1043 1044 1045 1046 1047

		handled |= CSR_INT_BIT_HW_ERR;

		return;
	}

1048
#ifdef CONFIG_IWLWIFI_DEBUG
1049
	if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
Z
Zhu Yi 已提交
1050
		/* NIC fires this, but we don't use it, redundant with WAKEUP */
1051
		if (inta & CSR_INT_BIT_SCD) {
1052
			IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1053
				      "the frame/frames.\n");
1054 1055
			priv->isr_stats.sch++;
		}
Z
Zhu Yi 已提交
1056 1057

		/* Alive notification via Rx interrupt will do the real work */
1058
		if (inta & CSR_INT_BIT_ALIVE) {
1059
			IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1060 1061
			priv->isr_stats.alive++;
		}
Z
Zhu Yi 已提交
1062 1063 1064
	}
#endif
	/* Safely ignore these bits for debug checks below */
1065
	inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
Z
Zhu Yi 已提交
1066

1067
	/* HW RF KILL switch toggled */
Z
Zhu Yi 已提交
1068 1069
	if (inta & CSR_INT_BIT_RF_KILL) {
		int hw_rf_kill = 0;
1070
		if (!(iwl_read32(priv, CSR_GP_CNTRL) &
Z
Zhu Yi 已提交
1071 1072 1073
				CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
			hw_rf_kill = 1;

1074
		IWL_WARN(priv, "RF_KILL bit toggled to %s.\n",
1075
				hw_rf_kill ? "disable radio" : "enable radio");
Z
Zhu Yi 已提交
1076

1077 1078
		priv->isr_stats.rfkill++;

1079
		/* driver only loads ucode once setting the interface up.
1080 1081 1082
		 * 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.
1083
		 */
1084 1085 1086 1087 1088
		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);
J
Johannes Berg 已提交
1089
			wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill);
1090
		}
Z
Zhu Yi 已提交
1091 1092 1093 1094

		handled |= CSR_INT_BIT_RF_KILL;
	}

1095
	/* Chip got too hot and stopped itself */
Z
Zhu Yi 已提交
1096
	if (inta & CSR_INT_BIT_CT_KILL) {
1097
		IWL_ERR(priv, "Microcode CT kill error detected.\n");
1098
		priv->isr_stats.ctkill++;
Z
Zhu Yi 已提交
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		handled |= CSR_INT_BIT_CT_KILL;
	}

	/* Error detected by uCode */
	if (inta & CSR_INT_BIT_SW_ERR) {
1104 1105
		IWL_ERR(priv, "Microcode SW error detected. "
			" Restarting 0x%X.\n", inta);
1106
		priv->isr_stats.sw++;
1107
		iwl_irq_handle_error(priv);
Z
Zhu Yi 已提交
1108 1109 1110
		handled |= CSR_INT_BIT_SW_ERR;
	}

1111 1112 1113 1114 1115
	/*
	 * 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.
	 */
Z
Zhu Yi 已提交
1116
	if (inta & CSR_INT_BIT_WAKEUP) {
1117
		IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1118
		iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1119 1120
		for (i = 0; i < priv->hw_params.max_txq_num; i++)
			iwl_txq_update_write_ptr(priv, &priv->txq[i]);
1121
		priv->isr_stats.wakeup++;
Z
Zhu Yi 已提交
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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)) {
1129
		iwl_rx_handle(priv);
1130
		priv->isr_stats.rx++;
Z
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		handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
	}

B
Ben Cahill 已提交
1134
	/* This "Tx" DMA channel is used only for loading uCode */
Z
Zhu Yi 已提交
1135
	if (inta & CSR_INT_BIT_FH_TX) {
B
Ben Cahill 已提交
1136
		IWL_DEBUG_ISR(priv, "uCode load interrupt\n");
1137
		priv->isr_stats.tx++;
Z
Zhu Yi 已提交
1138
		handled |= CSR_INT_BIT_FH_TX;
B
Ben Cahill 已提交
1139
		/* Wake up uCode load routine, now that load is complete */
1140 1141
		priv->ucode_write_complete = 1;
		wake_up_interruptible(&priv->wait_command_queue);
Z
Zhu Yi 已提交
1142 1143
	}

1144
	if (inta & ~handled) {
1145
		IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1146 1147
		priv->isr_stats.unhandled++;
	}
Z
Zhu Yi 已提交
1148

1149
	if (inta & ~(priv->inta_mask)) {
1150
		IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1151
			 inta & ~priv->inta_mask);
1152
		IWL_WARN(priv, "   with FH_INT = 0x%08x\n", inta_fh);
Z
Zhu Yi 已提交
1153 1154 1155
	}

	/* Re-enable all interrupts */
1156 1157
	/* only Re-enable if diabled by irq */
	if (test_bit(STATUS_INT_ENABLED, &priv->status))
1158
		iwl_enable_interrupts(priv);
Z
Zhu Yi 已提交
1159

1160
#ifdef CONFIG_IWLWIFI_DEBUG
1161
	if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1162 1163 1164
		inta = iwl_read32(priv, CSR_INT);
		inta_mask = iwl_read32(priv, CSR_INT_MASK);
		inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1165
		IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
Z
Zhu Yi 已提交
1166 1167 1168 1169 1170
			"flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
	}
#endif
}

M
Mohamed Abbas 已提交
1171 1172 1173 1174 1175 1176
/* tasklet for iwlagn interrupt */
static void iwl_irq_tasklet(struct iwl_priv *priv)
{
	u32 inta = 0;
	u32 handled = 0;
	unsigned long flags;
1177
	u32 i;
M
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1178 1179 1180 1181 1182 1183 1184 1185 1186
#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,
	 */
1187 1188 1189 1190 1191 1192 1193 1194
	/* 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.
	 */
1195
	iwl_write32(priv, CSR_INT, priv->_agn.inta | ~priv->inta_mask);
M
Mohamed Abbas 已提交
1196

1197
	inta = priv->_agn.inta;
M
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1198 1199

#ifdef CONFIG_IWLWIFI_DEBUG
1200
	if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
M
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1201 1202 1203 1204 1205 1206
		/* 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
Zhu Yi 已提交
1207 1208 1209

	spin_unlock_irqrestore(&priv->lock, flags);

1210 1211
	/* saved interrupt in inta variable now we can reset priv->_agn.inta */
	priv->_agn.inta = 0;
M
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1212 1213 1214

	/* Now service all interrupt bits discovered above. */
	if (inta & CSR_INT_BIT_HW_ERR) {
1215
		IWL_ERR(priv, "Hardware error detected.  Restarting.\n");
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1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228

		/* 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
1229
	if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
M
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1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253
		/* 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;

1254
		IWL_WARN(priv, "RF_KILL bit toggled to %s.\n",
M
Mohamed Abbas 已提交
1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268
				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);
J
Johannes Berg 已提交
1269
			wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill);
M
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1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294
		}

		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++;
		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);
1295 1296
		for (i = 0; i < priv->hw_params.max_txq_num; i++)
			iwl_txq_update_write_ptr(priv, &priv->txq[i]);
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1297 1298 1299 1300 1301 1302 1303 1304 1305

		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*/
1306 1307
	if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX |
			CSR_INT_BIT_RX_PERIODIC)) {
M
Mohamed Abbas 已提交
1308
		IWL_DEBUG_ISR(priv, "Rx interrupt\n");
1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324
		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
1325 1326
		 * but the shared data changes does not reflect this;
		 * periodic interrupt will detect any dangling Rx activity.
1327
		 */
1328 1329 1330

		/* Disable periodic interrupt; we use it as just a one-shot. */
		iwl_write8(priv, CSR_INT_PERIODIC_REG,
1331
			    CSR_INT_PERIODIC_DIS);
M
Mohamed Abbas 已提交
1332
		iwl_rx_handle(priv);
1333 1334 1335 1336 1337 1338 1339 1340

		/*
		 * 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.
		 */
1341
		if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX))
1342
			iwl_write8(priv, CSR_INT_PERIODIC_REG,
1343 1344
				    CSR_INT_PERIODIC_ENA);

M
Mohamed Abbas 已提交
1345 1346 1347
		priv->isr_stats.rx++;
	}

B
Ben Cahill 已提交
1348
	/* This "Tx" DMA channel is used only for loading uCode */
M
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1349 1350
	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
1351
		IWL_DEBUG_ISR(priv, "uCode load interrupt\n");
M
Mohamed Abbas 已提交
1352 1353
		priv->isr_stats.tx++;
		handled |= CSR_INT_BIT_FH_TX;
B
Ben Cahill 已提交
1354
		/* Wake up uCode load routine, now that load is complete */
M
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1355 1356 1357 1358 1359 1360 1361 1362 1363
		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++;
	}

1364
	if (inta & ~(priv->inta_mask)) {
M
Mohamed Abbas 已提交
1365
		IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1366
			 inta & ~priv->inta_mask);
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1367 1368 1369 1370 1371 1372 1373 1374
	}

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

1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395
/* 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) -
1396
		le32_to_cpu(priv->_agn.statistics.tx.actual_ack_cnt);
1397 1398
	expected_ack_cnt_delta =
		le32_to_cpu(pkt->u.stats.tx.expected_ack_cnt) -
1399
		le32_to_cpu(priv->_agn.statistics.tx.expected_ack_cnt);
1400 1401
	ba_timeout_delta =
		le32_to_cpu(pkt->u.stats.tx.agg.ba_timeout) -
1402
		le32_to_cpu(priv->_agn.statistics.tx.agg.ba_timeout);
1403 1404 1405 1406 1407 1408 1409 1410 1411
	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);

1412 1413 1414 1415 1416 1417
#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.
		 */
1418
		IWL_DEBUG_RADIO(priv, "rx_detected_cnt delta = %d\n",
1419
				priv->_agn.delta_statistics.tx.rx_detected_cnt);
1420 1421
		IWL_DEBUG_RADIO(priv,
				"ack_or_ba_timeout_collision delta = %d\n",
1422
				priv->_agn.delta_statistics.tx.
1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433
				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;
}

1434

1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548
/*****************************************************************************
 *
 * 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
1549 1550 1551 1552 1553 1554
/******************************************************************************
 *
 * uCode download functions
 *
 ******************************************************************************/

1555
static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
Z
Zhu Yi 已提交
1556
{
1557 1558 1559 1560 1561 1562
	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
1563 1564
}

1565
static void iwl_nic_start(struct iwl_priv *priv)
1566 1567 1568 1569 1570
{
	/* Remove all resets to allow NIC to operate */
	iwl_write32(priv, CSR_RESET, 0);
}

1571 1572
struct iwlagn_ucode_capabilities {
	u32 max_probe_length;
1573
	u32 standard_phy_calibration_size;
J
Johannes Berg 已提交
1574
	bool pan;
1575
};
1576

1577
static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
1578 1579
static int iwl_mac_setup_register(struct iwl_priv *priv,
				  struct iwlagn_ucode_capabilities *capa);
1580

1581 1582 1583
#define UCODE_EXPERIMENTAL_INDEX	100
#define UCODE_EXPERIMENTAL_TAG		"exp"

1584 1585 1586
static int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first)
{
	const char *name_pre = priv->cfg->fw_name_pre;
1587
	char tag[8];
1588

1589 1590 1591 1592 1593 1594
	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
1595
		priv->fw_index = priv->cfg->ucode_api_max;
1596 1597
		sprintf(tag, "%d", priv->fw_index);
	} else {
1598
		priv->fw_index--;
1599 1600
		sprintf(tag, "%d", priv->fw_index);
	}
1601 1602 1603 1604 1605 1606

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

1607
	sprintf(priv->firmware_name, "%s%s%s", name_pre, tag, ".ucode");
1608

1609 1610 1611
	IWL_DEBUG_INFO(priv, "attempting to load firmware %s'%s'\n",
		       (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
				? "EXPERIMENTAL " : "",
1612 1613 1614 1615 1616 1617 1618
		       priv->firmware_name);

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

1619 1620 1621 1622 1623
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;
1624 1625 1626

	u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
	u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
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
};

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;
}

1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719
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;
1720 1721 1722
	u32 tlv_len;
	enum iwl_ucode_tlv_type tlv_type;
	const u8 *tlv_data;
1723

1724 1725
	if (len < sizeof(*ucode)) {
		IWL_ERR(priv, "uCode has invalid length: %zd\n", len);
1726
		return -EINVAL;
1727
	}
1728

1729 1730 1731
	if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
		IWL_ERR(priv, "invalid uCode magic: 0X%x\n",
			le32_to_cpu(ucode->magic));
1732
		return -EINVAL;
1733
	}
1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757

	/*
	 * 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);

1758
	while (len >= sizeof(*tlv)) {
1759 1760 1761 1762 1763 1764 1765 1766 1767 1768
		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;

1769 1770 1771
		if (len < tlv_len) {
			IWL_ERR(priv, "invalid TLV len: %zd/%u\n",
				len, tlv_len);
1772
			return -EINVAL;
1773
		}
1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806
		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:
1807 1808 1809
			if (tlv_len != sizeof(u32))
				goto invalid_tlv_len;
			capa->max_probe_length =
1810
					le32_to_cpup((__le32 *)tlv_data);
1811
			break;
J
Johannes Berg 已提交
1812 1813 1814 1815 1816
		case IWL_UCODE_TLV_PAN:
			if (tlv_len)
				goto invalid_tlv_len;
			capa->pan = true;
			break;
1817
		case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
1818 1819 1820
			if (tlv_len != sizeof(u32))
				goto invalid_tlv_len;
			pieces->init_evtlog_ptr =
1821
					le32_to_cpup((__le32 *)tlv_data);
1822 1823
			break;
		case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
1824 1825 1826
			if (tlv_len != sizeof(u32))
				goto invalid_tlv_len;
			pieces->init_evtlog_size =
1827
					le32_to_cpup((__le32 *)tlv_data);
1828 1829
			break;
		case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
1830 1831 1832
			if (tlv_len != sizeof(u32))
				goto invalid_tlv_len;
			pieces->init_errlog_ptr =
1833
					le32_to_cpup((__le32 *)tlv_data);
1834 1835
			break;
		case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
1836 1837 1838
			if (tlv_len != sizeof(u32))
				goto invalid_tlv_len;
			pieces->inst_evtlog_ptr =
1839
					le32_to_cpup((__le32 *)tlv_data);
1840 1841
			break;
		case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
1842 1843 1844
			if (tlv_len != sizeof(u32))
				goto invalid_tlv_len;
			pieces->inst_evtlog_size =
1845
					le32_to_cpup((__le32 *)tlv_data);
1846 1847
			break;
		case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
1848 1849 1850
			if (tlv_len != sizeof(u32))
				goto invalid_tlv_len;
			pieces->inst_errlog_ptr =
1851
					le32_to_cpup((__le32 *)tlv_data);
1852
			break;
1853 1854
		case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
			if (tlv_len)
1855 1856
				goto invalid_tlv_len;
			priv->enhance_sensitivity_table = true;
1857
			break;
1858
		case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
1859 1860 1861
			if (tlv_len != sizeof(u32))
				goto invalid_tlv_len;
			capa->standard_phy_calibration_size =
1862 1863
					le32_to_cpup((__le32 *)tlv_data);
			break;
1864
		default:
1865
			IWL_WARN(priv, "unknown TLV: %d\n", tlv_type);
1866 1867 1868 1869
			break;
		}
	}

1870 1871 1872
	if (len) {
		IWL_ERR(priv, "invalid TLV after parsing: %zd\n", len);
		iwl_print_hex_dump(priv, IWL_DL_FW, (u8 *)data, len);
1873
		return -EINVAL;
1874
	}
1875

1876 1877 1878 1879 1880 1881 1882
	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;
1883 1884
}

Z
Zhu Yi 已提交
1885
/**
1886
 * iwl_ucode_callback - callback when firmware was loaded
Z
Zhu Yi 已提交
1887
 *
1888 1889
 * If loaded successfully, copies the firmware into buffers
 * for the card to fetch (via DMA).
Z
Zhu Yi 已提交
1890
 */
1891
static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
Z
Zhu Yi 已提交
1892
{
1893
	struct iwl_priv *priv = context;
1894
	struct iwl_ucode_header *ucode;
1895 1896
	int err;
	struct iwlagn_firmware_pieces pieces;
1897 1898
	const unsigned int api_max = priv->cfg->ucode_api_max;
	const unsigned int api_min = priv->cfg->ucode_api_min;
1899
	u32 api_ver;
1900
	char buildstr[25];
1901
	u32 build;
1902 1903
	struct iwlagn_ucode_capabilities ucode_capa = {
		.max_probe_length = 200,
1904
		.standard_phy_calibration_size =
1905
			IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE,
1906
	};
1907 1908

	memset(&pieces, 0, sizeof(pieces));
Z
Zhu Yi 已提交
1909

1910
	if (!ucode_raw) {
1911 1912 1913 1914
		if (priv->fw_index <= priv->cfg->ucode_api_max)
			IWL_ERR(priv,
				"request for firmware file '%s' failed.\n",
				priv->firmware_name);
1915
		goto try_again;
Z
Zhu Yi 已提交
1916 1917
	}

1918 1919
	IWL_DEBUG_INFO(priv, "Loaded firmware file '%s' (%zd bytes).\n",
		       priv->firmware_name, ucode_raw->size);
Z
Zhu Yi 已提交
1920

1921 1922
	/* Make sure that we got at least the API version number */
	if (ucode_raw->size < 4) {
1923
		IWL_ERR(priv, "File size way too small!\n");
1924
		goto try_again;
Z
Zhu Yi 已提交
1925 1926 1927
	}

	/* Data from ucode file:  header followed by uCode images */
1928
	ucode = (struct iwl_ucode_header *)ucode_raw->data;
Z
Zhu Yi 已提交
1929

1930 1931 1932
	if (ucode->ver)
		err = iwlagn_load_legacy_firmware(priv, ucode_raw, &pieces);
	else
1933 1934
		err = iwlagn_load_firmware(priv, ucode_raw, &pieces,
					   &ucode_capa);
1935

1936 1937
	if (err)
		goto try_again;
Z
Zhu Yi 已提交
1938

1939
	api_ver = IWL_UCODE_API(priv->ucode_ver);
1940
	build = pieces.build;
1941

1942 1943 1944 1945 1946
	/*
	 * 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
	 */
1947 1948 1949 1950 1951 1952 1953 1954 1955
	/* no api version check required for experimental uCode */
	if (priv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
		if (api_ver < api_min || api_ver > api_max) {
			IWL_ERR(priv,
				"Driver unable to support your firmware API. "
				"Driver supports v%u, firmware is v%u.\n",
				api_max, api_ver);
			goto try_again;
		}
1956

1957 1958 1959 1960 1961 1962 1963
		if (api_ver != api_max)
			IWL_ERR(priv,
				"Firmware has old API version. Expected v%u, "
				"got v%u. New firmware can be obtained "
				"from http://www.intellinuxwireless.org.\n",
				api_max, api_ver);
	}
1964

1965
	if (build)
1966 1967 1968
		sprintf(buildstr, " build %u%s", build,
		       (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
				? " (EXP)" : "");
1969 1970 1971 1972 1973 1974 1975 1976 1977
	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);
1978

1979 1980
	snprintf(priv->hw->wiphy->fw_version,
		 sizeof(priv->hw->wiphy->fw_version),
1981
		 "%u.%u.%u.%u%s",
1982 1983 1984
		 IWL_UCODE_MAJOR(priv->ucode_ver),
		 IWL_UCODE_MINOR(priv->ucode_ver),
		 IWL_UCODE_API(priv->ucode_ver),
1985 1986
		 IWL_UCODE_SERIAL(priv->ucode_ver),
		 buildstr);
Z
Zhu Yi 已提交
1987

1988 1989 1990 1991 1992 1993
	/*
	 * 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.
	 */

1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005
	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
2006 2007

	/* Verify that uCode images will fit in card's SRAM */
2008 2009 2010
	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);
2011
		goto try_again;
Z
Zhu Yi 已提交
2012 2013
	}

2014 2015 2016
	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);
2017
		goto try_again;
Z
Zhu Yi 已提交
2018
	}
2019 2020 2021 2022

	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);
2023
		goto try_again;
Z
Zhu Yi 已提交
2024
	}
2025 2026 2027 2028

	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);
2029
		goto try_again;
Z
Zhu Yi 已提交
2030
	}
2031 2032 2033 2034

	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);
2035
		goto try_again;
Z
Zhu Yi 已提交
2036 2037 2038 2039 2040 2041 2042
	}

	/* 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 */
2043
	priv->ucode_code.len = pieces.inst_size;
2044
	iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
Z
Zhu Yi 已提交
2045

2046
	priv->ucode_data.len = pieces.data_size;
2047
	iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
Z
Zhu Yi 已提交
2048

2049
	priv->ucode_data_backup.len = pieces.data_size;
2050
	iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
Z
Zhu Yi 已提交
2051

2052 2053 2054 2055
	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
2056
	/* Initialization instructions and data */
2057 2058
	if (pieces.init_size && pieces.init_data_size) {
		priv->ucode_init.len = pieces.init_size;
2059
		iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2060

2061
		priv->ucode_init_data.len = pieces.init_data_size;
2062
		iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2063 2064 2065 2066

		if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
			goto err_pci_alloc;
	}
Z
Zhu Yi 已提交
2067 2068

	/* Bootstrap (instructions only, no data) */
2069 2070
	if (pieces.boot_size) {
		priv->ucode_boot.len = pieces.boot_size;
2071
		iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
Z
Zhu Yi 已提交
2072

2073 2074 2075
		if (!priv->ucode_boot.v_addr)
			goto err_pci_alloc;
	}
Z
Zhu Yi 已提交
2076

2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087
	/* 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
2088 2089
		priv->_agn.init_evtlog_size =
			priv->cfg->base_params->max_event_log_size;
2090 2091 2092 2093 2094
	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
2095 2096
		priv->_agn.inst_evtlog_size =
			priv->cfg->base_params->max_event_log_size;
2097 2098
	priv->_agn.inst_errlog_ptr = pieces.inst_errlog_ptr;

J
Johannes Berg 已提交
2099 2100
	if (ucode_capa.pan) {
		priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
2101
		priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
J
Johannes Berg 已提交
2102 2103
	} else
		priv->sta_key_max_num = STA_KEY_MAX_NUM;
2104

Z
Zhu Yi 已提交
2105 2106 2107
	/* Copy images into buffers for card's bus-master reads ... */

	/* Runtime instructions (first block of data in file) */
2108 2109 2110
	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);
2111

2112
	IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
Z
Zhu Yi 已提交
2113 2114
		priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);

2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125
	/*
	 * 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) {
2126
		IWL_DEBUG_INFO(priv, "Copying (but not loading) init instr len %Zd\n",
2127 2128
				pieces.init_size);
		memcpy(priv->ucode_init.v_addr, pieces.init, pieces.init_size);
Z
Zhu Yi 已提交
2129 2130
	}

2131 2132
	/* Initialization data */
	if (pieces.init_data_size) {
2133
		IWL_DEBUG_INFO(priv, "Copying (but not loading) init data len %Zd\n",
2134 2135 2136
			       pieces.init_data_size);
		memcpy(priv->ucode_init_data.v_addr, pieces.init_data,
		       pieces.init_data_size);
Z
Zhu Yi 已提交
2137 2138
	}

2139 2140 2141 2142
	/* 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
2143

2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157
	/*
	 * 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;

2158 2159 2160 2161 2162
	/**************************************************
	 * This is still part of probe() in a sense...
	 *
	 * 9. Setup and register with mac80211 and debugfs
	 **************************************************/
2163
	err = iwl_mac_setup_register(priv, &ucode_capa);
2164 2165 2166 2167 2168 2169 2170
	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);

2171 2172 2173 2174 2175 2176 2177
	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
2178 2179
	/* We have our copies now, allow OS release its copies */
	release_firmware(ucode_raw);
2180
	complete(&priv->_agn.firmware_loading_complete);
2181 2182 2183 2184 2185 2186 2187 2188
	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
2189 2190

 err_pci_alloc:
2191
	IWL_ERR(priv, "failed to allocate pci memory\n");
2192
	iwl_dealloc_ucode_pci(priv);
2193
 out_unbind:
2194
	complete(&priv->_agn.firmware_loading_complete);
2195
	device_release_driver(&priv->pci_dev->dev);
Z
Zhu Yi 已提交
2196 2197 2198
	release_firmware(ucode_raw);
}

2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229
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",
};

2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249
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)
2250
{
2251 2252
	int i;
	int max = ARRAY_SIZE(desc_lookup_text);
2253

2254 2255
	if (num < max)
		return desc_lookup_text[num];
2256

2257 2258 2259 2260 2261 2262
	max = ARRAY_SIZE(advanced_lookup) - 1;
	for (i = 0; i < max; i++) {
		if (advanced_lookup[i].num == num)
			break;;
	}
	return advanced_lookup[i].name;
2263 2264 2265 2266 2267 2268 2269 2270 2271 2272
}

#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;
2273
	u32 pc, hcmd;
2274

2275
	if (priv->ucode_type == UCODE_INIT) {
2276
		base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
2277 2278 2279
		if (!base)
			base = priv->_agn.init_errlog_ptr;
	} else {
2280
		base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
2281 2282 2283
		if (!base)
			base = priv->_agn.inst_errlog_ptr;
	}
2284 2285

	if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
2286 2287 2288
		IWL_ERR(priv,
			"Not valid error log pointer 0x%08X for %s uCode\n",
			base, (priv->ucode_type == UCODE_INIT) ? "Init" : "RT");
2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300
		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));
2301
	priv->isr_stats.err_code = desc;
2302
	pc = iwl_read_targ_mem(priv, base + 2 * sizeof(u32));
2303 2304 2305 2306 2307 2308 2309 2310
	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));
2311
	hcmd = iwl_read_targ_mem(priv, base + 22 * sizeof(u32));
2312

J
Johannes Berg 已提交
2313 2314 2315
	trace_iwlwifi_dev_ucode_error(priv, desc, time, data1, data2, line,
				      blink1, blink2, ilink1, ilink2);

2316
	IWL_ERR(priv, "Desc                                  Time       "
2317
		"data1      data2      line\n");
2318
	IWL_ERR(priv, "%-28s (0x%04X) %010u 0x%08X 0x%08X %u\n",
2319
		desc_lookup(desc), desc, time, data1, data2, line);
2320 2321 2322
	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);
2323 2324 2325 2326 2327 2328 2329 2330
}

#define EVENT_START_OFFSET  (4 * sizeof(u32))

/**
 * iwl_print_event_log - Dump error event log to syslog
 *
 */
W
Wey-Yi Guy 已提交
2331 2332 2333
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)
2334 2335 2336 2337 2338 2339
{
	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
2340
	unsigned long reg_flags;
2341 2342

	if (num_events == 0)
W
Wey-Yi Guy 已提交
2343
		return pos;
2344 2345

	if (priv->ucode_type == UCODE_INIT) {
2346
		base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
2347 2348 2349
		if (!base)
			base = priv->_agn.init_evtlog_ptr;
	} else {
2350
		base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
2351 2352 2353
		if (!base)
			base = priv->_agn.inst_evtlog_ptr;
	}
2354 2355 2356 2357 2358 2359 2360 2361

	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
2362 2363 2364 2365 2366 2367 2368 2369
	/* 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();

2370 2371 2372
	/* "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
2373 2374
		ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
		time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2375 2376
		if (mode == 0) {
			/* data, ev */
W
Wey-Yi Guy 已提交
2377 2378 2379 2380 2381 2382 2383 2384 2385 2386
			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);
			}
2387
		} else {
B
Ben Cahill 已提交
2388
			data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
W
Wey-Yi Guy 已提交
2389 2390 2391 2392 2393 2394
			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",
2395
					time, data, ev);
W
Wey-Yi Guy 已提交
2396 2397 2398
				trace_iwlwifi_dev_ucode_event(priv, time,
					data, ev);
			}
2399 2400
		}
	}
B
Ben Cahill 已提交
2401 2402 2403 2404

	/* 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
2405
	return pos;
2406 2407
}

2408 2409 2410
/**
 * iwl_print_last_event_logs - Dump the newest # of event log to syslog
 */
W
Wey-Yi Guy 已提交
2411 2412 2413 2414
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)
2415 2416 2417 2418 2419 2420 2421
{
	/*
	 * 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
2422 2423 2424 2425 2426 2427 2428
			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);
2429
		} else
W
Wey-Yi Guy 已提交
2430 2431
			pos = iwl_print_event_log(priv, next_entry - size,
						  size, mode, pos, buf, bufsz);
2432
	} else {
W
Wey-Yi Guy 已提交
2433 2434 2435 2436 2437 2438 2439
		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);
		}
2440
	}
W
Wey-Yi Guy 已提交
2441
	return pos;
2442 2443 2444 2445
}

#define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)

W
Wey-Yi Guy 已提交
2446 2447
int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
			    char **buf, bool display)
2448 2449 2450 2451 2452 2453 2454
{
	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 */
2455
	u32 logsize;
W
Wey-Yi Guy 已提交
2456 2457
	int pos = 0;
	size_t bufsz = 0;
2458

2459
	if (priv->ucode_type == UCODE_INIT) {
2460
		base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
2461 2462 2463 2464
		logsize = priv->_agn.init_evtlog_size;
		if (!base)
			base = priv->_agn.init_evtlog_ptr;
	} else {
2465
		base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
2466 2467 2468 2469
		logsize = priv->_agn.inst_evtlog_size;
		if (!base)
			base = priv->_agn.inst_evtlog_ptr;
	}
2470 2471

	if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
2472 2473 2474
		IWL_ERR(priv,
			"Invalid event log pointer 0x%08X for %s uCode\n",
			base, (priv->ucode_type == UCODE_INIT) ? "Init" : "RT");
2475
		return -EINVAL;
2476 2477 2478 2479 2480 2481 2482 2483
	}

	/* 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)));

2484
	if (capacity > logsize) {
B
Ben Cahill 已提交
2485
		IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n",
2486 2487
			capacity, logsize);
		capacity = logsize;
B
Ben Cahill 已提交
2488 2489
	}

2490
	if (next_entry > logsize) {
B
Ben Cahill 已提交
2491
		IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
2492 2493
			next_entry, logsize);
		next_entry = logsize;
B
Ben Cahill 已提交
2494 2495
	}

2496 2497 2498 2499 2500
	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
2501
		return pos;
2502 2503
	}

2504 2505 2506
	/* enable/disable bt channel announcement */
	priv->bt_ch_announce = iwlagn_bt_ch_announce;

2507
#ifdef CONFIG_IWLWIFI_DEBUG
2508
	if (!(iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) && !full_log)
2509 2510 2511 2512 2513 2514 2515 2516
		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);
2517

2518
#ifdef CONFIG_IWLWIFI_DEBUG
W
Wey-Yi Guy 已提交
2519 2520 2521 2522 2523 2524 2525
	if (display) {
		if (full_log)
			bufsz = capacity * 48;
		else
			bufsz = size * 48;
		*buf = kmalloc(bufsz, GFP_KERNEL);
		if (!*buf)
2526
			return -ENOMEM;
W
Wey-Yi Guy 已提交
2527
	}
2528 2529 2530 2531 2532 2533 2534
	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
2535 2536 2537
			pos = iwl_print_event_log(priv, next_entry,
						capacity - next_entry, mode,
						pos, buf, bufsz);
2538
		/* (then/else) start at top of log */
W
Wey-Yi Guy 已提交
2539 2540
		pos = iwl_print_event_log(priv, 0,
					  next_entry, mode, pos, buf, bufsz);
2541
	} else
W
Wey-Yi Guy 已提交
2542 2543 2544
		pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
						next_entry, size, mode,
						pos, buf, bufsz);
2545
#else
W
Wey-Yi Guy 已提交
2546 2547 2548
	pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
					next_entry, size, mode,
					pos, buf, bufsz);
2549
#endif
W
Wey-Yi Guy 已提交
2550
	return pos;
2551
}
2552

2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565
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;

2566
	if (priv->cfg->base_params->support_ct_kill_exit) {
2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598
		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);
	}
}

2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609
static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
{
	struct iwl_calib_cfg_cmd calib_cfg_cmd;
	struct iwl_host_cmd cmd = {
		.id = CALIBRATION_CFG_CMD,
		.len = sizeof(struct iwl_calib_cfg_cmd),
		.data = &calib_cfg_cmd,
	};

	memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
	calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_INIT_CFG_ALL;
2610
	calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
2611 2612 2613 2614 2615

	return iwl_send_cmd(priv, &cmd);
}


Z
Zhu Yi 已提交
2616
/**
2617
 * iwl_alive_start - called after REPLY_ALIVE notification received
Z
Zhu Yi 已提交
2618
 *                   from protocol/runtime uCode (initialization uCode's
2619
 *                   Alive gets handled by iwl_init_alive_start()).
Z
Zhu Yi 已提交
2620
 */
2621
static void iwl_alive_start(struct iwl_priv *priv)
Z
Zhu Yi 已提交
2622
{
2623
	int ret = 0;
2624
	struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
Z
Zhu Yi 已提交
2625

2626
	IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
Z
Zhu Yi 已提交
2627 2628 2629 2630

	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 */
2631
		IWL_DEBUG_INFO(priv, "Alive failed.\n");
Z
Zhu Yi 已提交
2632 2633 2634 2635 2636 2637
		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.  */
2638
	if (iwl_verify_ucode(priv)) {
Z
Zhu Yi 已提交
2639 2640
		/* Runtime instruction load was bad;
		 * take it all the way back down so we can try again */
2641
		IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
Z
Zhu Yi 已提交
2642 2643 2644
		goto restart;
	}

2645 2646
	ret = priv->cfg->ops->lib->alive_notify(priv);
	if (ret) {
2647 2648
		IWL_WARN(priv,
			"Could not complete ALIVE transition [ntf]: %d\n", ret);
Z
Zhu Yi 已提交
2649 2650 2651
		goto restart;
	}

2652

2653
	/* After the ALIVE response, we can send host commands to the uCode */
Z
Zhu Yi 已提交
2654 2655
	set_bit(STATUS_ALIVE, &priv->status);

2656 2657 2658 2659
	if (priv->cfg->ops->lib->recover_from_tx_stall) {
		/* Enable timer to monitor the driver queues */
		mod_timer(&priv->monitor_recover,
			jiffies +
2660 2661
			msecs_to_jiffies(
			  priv->cfg->base_params->monitor_recover_period));
2662 2663
	}

2664
	if (iwl_is_rfkill(priv))
Z
Zhu Yi 已提交
2665 2666
		return;

2667
	/* download priority table before any calibration request */
2668 2669
	if (priv->cfg->bt_params &&
	    priv->cfg->bt_params->advanced_bt_coexist) {
2670 2671 2672 2673 2674 2675
		/* Configure Bluetooth device coexistence support */
		priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
		priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
		priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
		priv->cfg->ops->hcmd->send_bt_config(priv);
		priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
2676
		iwlagn_send_prio_tbl(priv);
2677 2678 2679 2680 2681 2682 2683

		/* FIXME: w/a to force change uCode BT state machine */
		iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
			BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
		iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
			BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
	}
2684 2685 2686
	if (priv->hw_params.calib_rt_cfg)
		iwlagn_send_calib_cfg_rt(priv, priv->hw_params.calib_rt_cfg);

2687
	ieee80211_wake_queues(priv->hw);
Z
Zhu Yi 已提交
2688

2689
	priv->active_rate = IWL_RATES_MASK;
Z
Zhu Yi 已提交
2690

2691 2692 2693 2694
	/* 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);

2695
	if (iwl_is_associated_ctx(ctx)) {
G
Gregory Greenman 已提交
2696
		struct iwl_rxon_cmd *active_rxon =
2697
				(struct iwl_rxon_cmd *)&ctx->active;
2698
		/* apply any changes in staging */
2699
		ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
Z
Zhu Yi 已提交
2700 2701
		active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
	} else {
2702
		struct iwl_rxon_context *tmp;
Z
Zhu Yi 已提交
2703
		/* Initialize our rx_config data */
2704 2705
		for_each_context(priv, tmp)
			iwl_connection_init_rx_config(priv, tmp);
2706 2707

		if (priv->cfg->ops->hcmd->set_rxon_chain)
2708
			priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
Z
Zhu Yi 已提交
2709 2710
	}

2711 2712
	if (priv->cfg->bt_params &&
	    !priv->cfg->bt_params->advanced_bt_coexist) {
2713 2714 2715
		/* Configure Bluetooth device coexistence support */
		priv->cfg->ops->hcmd->send_bt_config(priv);
	}
Z
Zhu Yi 已提交
2716

2717 2718
	iwl_reset_run_time_calib(priv);

Z
Zhu Yi 已提交
2719
	/* Configure the adapter for unassociated operation */
2720
	iwlcore_commit_rxon(priv, ctx);
Z
Zhu Yi 已提交
2721 2722

	/* At this point, the NIC is initialized and operational */
2723
	iwl_rf_kill_ct_config(priv);
2724

J
Johannes Berg 已提交
2725
	iwl_leds_init(priv);
2726

2727
	IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2728
	set_bit(STATUS_READY, &priv->status);
2729
	wake_up_interruptible(&priv->wait_command_queue);
Z
Zhu Yi 已提交
2730

2731
	iwl_power_update_mode(priv, true);
2732 2733
	IWL_DEBUG_INFO(priv, "Updated power mode\n");

2734

Z
Zhu Yi 已提交
2735 2736 2737 2738 2739 2740
	return;

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

2741
static void iwl_cancel_deferred_work(struct iwl_priv *priv);
Z
Zhu Yi 已提交
2742

2743
static void __iwl_down(struct iwl_priv *priv)
Z
Zhu Yi 已提交
2744 2745 2746 2747
{
	unsigned long flags;
	int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);

2748
	IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
Z
Zhu Yi 已提交
2749

2750 2751 2752
	iwl_scan_cancel_timeout(priv, 200);

	exit_pending = test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
Z
Zhu Yi 已提交
2753

2754 2755 2756 2757 2758
	/* 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);

2759
	iwl_clear_ucode_stations(priv, NULL);
2760
	iwl_dealloc_bcast_stations(priv);
2761
	iwl_clear_driver_stations(priv);
Z
Zhu Yi 已提交
2762

2763
	/* reset BT coex data */
2764
	priv->bt_status = 0;
2765 2766 2767 2768 2769
	if (priv->cfg->bt_params)
		priv->bt_traffic_load =
			 priv->cfg->bt_params->bt_init_traffic_load;
	else
		priv->bt_traffic_load = 0;
2770
	priv->bt_sco_active = false;
2771 2772
	priv->bt_full_concurrent = false;
	priv->bt_ci_compliance = 0;
2773

Z
Zhu Yi 已提交
2774 2775 2776 2777 2778 2779 2780 2781 2782
	/* 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 */
2783
	iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
Z
Zhu Yi 已提交
2784 2785

	/* tell the device to stop sending interrupts */
2786
	spin_lock_irqsave(&priv->lock, flags);
2787
	iwl_disable_interrupts(priv);
2788 2789
	spin_unlock_irqrestore(&priv->lock, flags);
	iwl_synchronize_irq(priv);
Z
Zhu Yi 已提交
2790 2791 2792 2793

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

2794
	/* If we have not previously called iwl_init() then
J
Johannes Berg 已提交
2795
	 * clear all bits but the RF Kill bit and return */
2796
	if (!iwl_is_init(priv)) {
Z
Zhu Yi 已提交
2797 2798
		priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
					STATUS_RF_KILL_HW |
2799 2800
			       test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
					STATUS_GEO_CONFIGURED |
2801 2802
			       test_bit(STATUS_EXIT_PENDING, &priv->status) <<
					STATUS_EXIT_PENDING;
Z
Zhu Yi 已提交
2803 2804 2805
		goto exit;
	}

2806
	/* ...otherwise clear out all the status bits but the RF Kill
J
Johannes Berg 已提交
2807
	 * bit and continue taking the NIC down. */
Z
Zhu Yi 已提交
2808 2809
	priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
				STATUS_RF_KILL_HW |
2810 2811
			test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
				STATUS_GEO_CONFIGURED |
Z
Zhu Yi 已提交
2812
			test_bit(STATUS_FW_ERROR, &priv->status) <<
2813 2814 2815
				STATUS_FW_ERROR |
		       test_bit(STATUS_EXIT_PENDING, &priv->status) <<
				STATUS_EXIT_PENDING;
Z
Zhu Yi 已提交
2816

M
Mohamed Abbas 已提交
2817 2818
	/* device going down, Stop using ICT table */
	iwl_disable_ict(priv);
Z
Zhu Yi 已提交
2819

2820
	iwlagn_txq_ctx_stop(priv);
2821
	iwlagn_rxq_stop(priv);
Z
Zhu Yi 已提交
2822

B
Ben Cahill 已提交
2823 2824
	/* 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
2825 2826
	udelay(5);

B
Ben Cahill 已提交
2827 2828 2829
	/* 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);

2830
	/* Stop the device, and put it in low power state */
J
Johannes Berg 已提交
2831
	iwl_apm_stop(priv);
2832

Z
Zhu Yi 已提交
2833
 exit:
2834
	memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
Z
Zhu Yi 已提交
2835

2836
	dev_kfree_skb(priv->beacon_skb);
2837
	priv->beacon_skb = NULL;
Z
Zhu Yi 已提交
2838 2839

	/* clear out any free frames */
2840
	iwl_clear_free_frames(priv);
Z
Zhu Yi 已提交
2841 2842
}

2843
static void iwl_down(struct iwl_priv *priv)
Z
Zhu Yi 已提交
2844 2845
{
	mutex_lock(&priv->mutex);
2846
	__iwl_down(priv);
Z
Zhu Yi 已提交
2847
	mutex_unlock(&priv->mutex);
2848

2849
	iwl_cancel_deferred_work(priv);
Z
Zhu Yi 已提交
2850 2851
}

M
Mohamed Abbas 已提交
2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 2879
#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;

2880
	IWL_DEBUG_INFO(priv, "iwl_prepare_card_hw enter\n");
M
Mohamed Abbas 已提交
2881

2882 2883 2884 2885 2886
	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
2887 2888 2889 2890 2891 2892 2893
	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);

2894
	/* HW should be ready by now, check again. */
M
Mohamed Abbas 已提交
2895 2896 2897 2898 2899 2900
	if (ret != -ETIMEDOUT)
		iwl_set_hw_ready(priv);

	return ret;
}

Z
Zhu Yi 已提交
2901 2902
#define MAX_HW_RESTARTS 5

2903
static int __iwl_up(struct iwl_priv *priv)
Z
Zhu Yi 已提交
2904
{
2905
	struct iwl_rxon_context *ctx;
2906 2907
	int i;
	int ret;
Z
Zhu Yi 已提交
2908 2909

	if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2910
		IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
Z
Zhu Yi 已提交
2911 2912 2913
		return -EIO;
	}

2914
	if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2915
		IWL_ERR(priv, "ucode not available for device bringup\n");
2916 2917 2918
		return -EIO;
	}

2919
	for_each_context(priv, ctx) {
2920
		ret = iwlagn_alloc_bcast_station(priv, ctx);
2921 2922 2923 2924 2925
		if (ret) {
			iwl_dealloc_bcast_stations(priv);
			return ret;
		}
	}
2926

M
Mohamed Abbas 已提交
2927 2928 2929 2930 2931 2932 2933
	iwl_prepare_card_hw(priv);

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

2934
	/* If platform's RF_KILL switch is NOT set to KILL */
2935
	if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2936
		clear_bit(STATUS_RF_KILL_HW, &priv->status);
2937
	else
2938
		set_bit(STATUS_RF_KILL_HW, &priv->status);
2939

2940
	if (iwl_is_rfkill(priv)) {
J
Johannes Berg 已提交
2941 2942
		wiphy_rfkill_set_hw_state(priv->hw->wiphy, true);

2943
		iwl_enable_interrupts(priv);
J
Johannes Berg 已提交
2944
		IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
2945
		return 0;
Z
Zhu Yi 已提交
2946 2947
	}

2948
	iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
Z
Zhu Yi 已提交
2949

2950
	/* must be initialised before iwl_hw_nic_init */
J
Johannes Berg 已提交
2951 2952 2953 2954
	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;
2955

2956
	ret = iwlagn_hw_nic_init(priv);
2957
	if (ret) {
2958
		IWL_ERR(priv, "Unable to init nic\n");
2959
		return ret;
Z
Zhu Yi 已提交
2960 2961 2962
	}

	/* make sure rfkill handshake bits are cleared */
2963 2964
	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
2965 2966 2967
		    CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);

	/* clear (again), then enable host interrupts */
2968
	iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2969
	iwl_enable_interrupts(priv);
Z
Zhu Yi 已提交
2970 2971

	/* really make sure rfkill handshake bits are cleared */
2972 2973
	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
2974 2975 2976 2977 2978

	/* 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,
2979
	       priv->ucode_data.len);
Z
Zhu Yi 已提交
2980 2981 2982 2983 2984 2985

	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 */
2986
		ret = priv->cfg->ops->lib->load_ucode(priv);
Z
Zhu Yi 已提交
2987

2988
		if (ret) {
2989 2990
			IWL_ERR(priv, "Unable to set up bootstrap uCode: %d\n",
				ret);
Z
Zhu Yi 已提交
2991 2992 2993 2994
			continue;
		}

		/* start card; "initialize" will load runtime ucode */
2995
		iwl_nic_start(priv);
Z
Zhu Yi 已提交
2996

2997
		IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
Z
Zhu Yi 已提交
2998 2999 3000 3001 3002

		return 0;
	}

	set_bit(STATUS_EXIT_PENDING, &priv->status);
3003
	__iwl_down(priv);
M
Mohamed Abbas 已提交
3004
	clear_bit(STATUS_EXIT_PENDING, &priv->status);
Z
Zhu Yi 已提交
3005 3006 3007

	/* tried to restart and config the device for as long as our
	 * patience could withstand */
3008
	IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
Z
Zhu Yi 已提交
3009 3010 3011 3012 3013 3014 3015 3016 3017 3018
	return -EIO;
}


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

3019
static void iwl_bg_init_alive_start(struct work_struct *data)
Z
Zhu Yi 已提交
3020
{
3021 3022
	struct iwl_priv *priv =
	    container_of(data, struct iwl_priv, init_alive_start.work);
Z
Zhu Yi 已提交
3023 3024 3025 3026 3027

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

	mutex_lock(&priv->mutex);
3028
	priv->cfg->ops->lib->init_alive_start(priv);
Z
Zhu Yi 已提交
3029 3030 3031
	mutex_unlock(&priv->mutex);
}

3032
static void iwl_bg_alive_start(struct work_struct *data)
Z
Zhu Yi 已提交
3033
{
3034 3035
	struct iwl_priv *priv =
	    container_of(data, struct iwl_priv, alive_start.work);
Z
Zhu Yi 已提交
3036 3037 3038 3039

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

M
Mohamed Abbas 已提交
3040 3041 3042
	/* enable dram interrupt */
	iwl_reset_ict(priv);

Z
Zhu Yi 已提交
3043
	mutex_lock(&priv->mutex);
3044
	iwl_alive_start(priv);
Z
Zhu Yi 已提交
3045 3046 3047
	mutex_unlock(&priv->mutex);
}

3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061
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) {
3062 3063
		if (priv->cfg->bt_params &&
		    priv->cfg->bt_params->bt_statistics) {
3064 3065 3066 3067 3068 3069 3070 3071 3072 3073
			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);
		}
3074 3075 3076 3077 3078
	}

	mutex_unlock(&priv->mutex);
}

3079
static void iwl_bg_restart(struct work_struct *data)
Z
Zhu Yi 已提交
3080
{
3081
	struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
Z
Zhu Yi 已提交
3082 3083 3084 3085

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

J
Johannes Berg 已提交
3086
	if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
3087
		struct iwl_rxon_context *ctx;
3088 3089
		bool bt_sco, bt_full_concurrent;
		u8 bt_ci_compliance;
3090
		u8 bt_load;
3091
		u8 bt_status;
3092

J
Johannes Berg 已提交
3093
		mutex_lock(&priv->mutex);
3094 3095
		for_each_context(priv, ctx)
			ctx->vif = NULL;
J
Johannes Berg 已提交
3096
		priv->is_open = 0;
3097 3098 3099 3100 3101 3102 3103 3104 3105 3106 3107

		/*
		 * __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;
3108 3109
		bt_full_concurrent = priv->bt_full_concurrent;
		bt_ci_compliance = priv->bt_ci_compliance;
3110
		bt_load = priv->bt_traffic_load;
3111
		bt_status = priv->bt_status;
3112

3113
		__iwl_down(priv);
3114 3115

		priv->bt_sco_active = bt_sco;
3116 3117
		priv->bt_full_concurrent = bt_full_concurrent;
		priv->bt_ci_compliance = bt_ci_compliance;
3118
		priv->bt_traffic_load = bt_load;
3119
		priv->bt_status = bt_status;
3120

J
Johannes Berg 已提交
3121
		mutex_unlock(&priv->mutex);
3122
		iwl_cancel_deferred_work(priv);
J
Johannes Berg 已提交
3123 3124 3125
		ieee80211_restart_hw(priv->hw);
	} else {
		iwl_down(priv);
J
Johannes Berg 已提交
3126 3127 3128 3129 3130 3131 3132

		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
3133
	}
Z
Zhu Yi 已提交
3134 3135
}

3136
static void iwl_bg_rx_replenish(struct work_struct *data)
Z
Zhu Yi 已提交
3137
{
3138 3139
	struct iwl_priv *priv =
	    container_of(data, struct iwl_priv, rx_replenish);
Z
Zhu Yi 已提交
3140 3141 3142 3143 3144

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

	mutex_lock(&priv->mutex);
3145
	iwlagn_rx_replenish(priv);
Z
Zhu Yi 已提交
3146 3147 3148 3149 3150 3151 3152 3153 3154
	mutex_unlock(&priv->mutex);
}

/*****************************************************************************
 *
 * mac80211 entry point functions
 *
 *****************************************************************************/

3155
#define UCODE_READY_TIMEOUT	(4 * HZ)
3156

3157 3158 3159 3160
/*
 * Not a mac80211 entry point function, but it fits in with all the
 * other mac80211 functions grouped here.
 */
3161 3162
static int iwl_mac_setup_register(struct iwl_priv *priv,
				  struct iwlagn_ucode_capabilities *capa)
3163 3164 3165
{
	int ret;
	struct ieee80211_hw *hw = priv->hw;
3166 3167
	struct iwl_rxon_context *ctx;

3168 3169 3170 3171 3172
	hw->rate_control_algorithm = "iwl-agn-rs";

	/* Tell mac80211 our characteristics */
	hw->flags = IEEE80211_HW_SIGNAL_DBM |
		    IEEE80211_HW_AMPDU_AGGREGATION |
3173
		    IEEE80211_HW_NEED_DTIM_PERIOD |
3174 3175
		    IEEE80211_HW_SPECTRUM_MGMT;

3176
	if (!priv->cfg->base_params->broken_powersave)
3177 3178 3179
		hw->flags |= IEEE80211_HW_SUPPORTS_PS |
			     IEEE80211_HW_SUPPORTS_DYNAMIC_PS;

J
Johannes Berg 已提交
3180 3181 3182 3183
	if (priv->cfg->sku & IWL_SKU_N)
		hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
			     IEEE80211_HW_SUPPORTS_STATIC_SMPS;

3184
	hw->sta_data_size = sizeof(struct iwl_station_priv);
J
Johannes Berg 已提交
3185 3186
	hw->vif_data_size = sizeof(struct iwl_vif_priv);

3187 3188 3189 3190
	for_each_context(priv, ctx) {
		hw->wiphy->interface_modes |= ctx->interface_modes;
		hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
	}
3191

R
Reinette Chatre 已提交
3192
	hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
J
Johannes Berg 已提交
3193
			    WIPHY_FLAG_DISABLE_BEACON_HINTS;
3194 3195 3196 3197 3198

	/*
	 * For now, disable PS by default because it affects
	 * RX performance significantly.
	 */
J
Johannes Berg 已提交
3199
	hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
3200

3201
	hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
3202
	/* we create the 802.11 header and a zero-length SSID element */
3203
	hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 2;
3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227

	/* 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;
}


3228
int iwlagn_mac_start(struct ieee80211_hw *hw)
Z
Zhu Yi 已提交
3229
{
3230
	struct iwl_priv *priv = hw->priv;
3231
	int ret;
Z
Zhu Yi 已提交
3232

3233
	IWL_DEBUG_MAC80211(priv, "enter\n");
Z
Zhu Yi 已提交
3234 3235 3236

	/* we should be verifying the device is ready to be opened */
	mutex_lock(&priv->mutex);
3237
	ret = __iwl_up(priv);
Z
Zhu Yi 已提交
3238
	mutex_unlock(&priv->mutex);
3239

3240
	if (ret)
3241
		return ret;
3242

3243 3244 3245
	if (iwl_is_rfkill(priv))
		goto out;

3246
	IWL_DEBUG_INFO(priv, "Start UP work done.\n");
3247

3248
	/* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
3249
	 * mac80211 will not be run successfully. */
3250 3251 3252 3253 3254
	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)) {
3255
			IWL_ERR(priv, "START_ALIVE timeout after %dms.\n",
3256
				jiffies_to_msecs(UCODE_READY_TIMEOUT));
3257
			return -ETIMEDOUT;
3258
		}
3259
	}
T
Tomas Winkler 已提交
3260

J
Johannes Berg 已提交
3261 3262
	iwl_led_start(priv);

3263
out:
T
Tomas Winkler 已提交
3264
	priv->is_open = 1;
3265
	IWL_DEBUG_MAC80211(priv, "leave\n");
Z
Zhu Yi 已提交
3266 3267 3268
	return 0;
}

3269
void iwlagn_mac_stop(struct ieee80211_hw *hw)
Z
Zhu Yi 已提交
3270
{
3271
	struct iwl_priv *priv = hw->priv;
Z
Zhu Yi 已提交
3272

3273
	IWL_DEBUG_MAC80211(priv, "enter\n");
M
Mohamed Abbas 已提交
3274

J
Johannes Berg 已提交
3275
	if (!priv->is_open)
3276 3277
		return;

Z
Zhu Yi 已提交
3278
	priv->is_open = 0;
3279

3280
	iwl_down(priv);
3281 3282

	flush_workqueue(priv->workqueue);
3283 3284 3285 3286

	/* 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
3287

3288
	IWL_DEBUG_MAC80211(priv, "leave\n");
Z
Zhu Yi 已提交
3289 3290
}

3291
int iwlagn_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
Z
Zhu Yi 已提交
3292
{
3293
	struct iwl_priv *priv = hw->priv;
Z
Zhu Yi 已提交
3294

3295
	IWL_DEBUG_MACDUMP(priv, "enter\n");
Z
Zhu Yi 已提交
3296

3297
	IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3298
		     ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
Z
Zhu Yi 已提交
3299

3300
	if (iwlagn_tx_skb(priv, skb))
Z
Zhu Yi 已提交
3301 3302
		dev_kfree_skb_any(skb);

3303
	IWL_DEBUG_MACDUMP(priv, "leave\n");
3304
	return NETDEV_TX_OK;
Z
Zhu Yi 已提交
3305 3306
}

3307 3308 3309 3310 3311
void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw,
				struct ieee80211_vif *vif,
				struct ieee80211_key_conf *keyconf,
				struct ieee80211_sta *sta,
				u32 iv32, u16 *phase1key)
3312
{
3313
	struct iwl_priv *priv = hw->priv;
3314 3315
	struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;

3316
	IWL_DEBUG_MAC80211(priv, "enter\n");
3317

3318
	iwl_update_tkip_key(priv, vif_priv->ctx, keyconf, sta,
3319
			    iv32, phase1key);
3320

3321
	IWL_DEBUG_MAC80211(priv, "leave\n");
3322 3323
}

3324 3325 3326
int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
		       struct ieee80211_vif *vif, struct ieee80211_sta *sta,
		       struct ieee80211_key_conf *key)
Z
Zhu Yi 已提交
3327
{
3328
	struct iwl_priv *priv = hw->priv;
3329
	struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
3330
	struct iwl_rxon_context *ctx = vif_priv->ctx;
3331 3332 3333
	int ret;
	u8 sta_id;
	bool is_default_wep_key = false;
Z
Zhu Yi 已提交
3334

3335
	IWL_DEBUG_MAC80211(priv, "enter\n");
Z
Zhu Yi 已提交
3336

3337
	if (priv->cfg->mod_params->sw_crypto) {
3338
		IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
Z
Zhu Yi 已提交
3339 3340 3341
		return -EOPNOTSUPP;
	}

3342
	sta_id = iwl_sta_id_or_broadcast(priv, vif_priv->ctx, sta);
3343 3344
	if (sta_id == IWL_INVALID_STATION)
		return -EINVAL;
Z
Zhu Yi 已提交
3345

3346
	mutex_lock(&priv->mutex);
3347
	iwl_scan_cancel_timeout(priv, 100);
3348

J
Johannes Berg 已提交
3349 3350
	/*
	 * If we are getting WEP group key and we didn't receive any key mapping
3351 3352
	 * so far, we are in legacy wep mode (group key only), otherwise we are
	 * in 1X mode.
J
Johannes Berg 已提交
3353 3354
	 * In legacy wep mode, we use another host command to the uCode.
	 */
3355 3356
	if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
	     key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
3357
	    !sta) {
3358
		if (cmd == SET_KEY)
3359
			is_default_wep_key = !ctx->key_mapping_keys;
3360
		else
3361 3362
			is_default_wep_key =
					(key->hw_key_idx == HW_KEY_DEFAULT);
3363
	}
3364

Z
Zhu Yi 已提交
3365
	switch (cmd) {
3366
	case SET_KEY:
3367
		if (is_default_wep_key)
3368
			ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
3369
		else
3370 3371
			ret = iwl_set_dynamic_key(priv, vif_priv->ctx,
						  key, sta_id);
3372

3373
		IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
Z
Zhu Yi 已提交
3374 3375
		break;
	case DISABLE_KEY:
3376
		if (is_default_wep_key)
3377
			ret = iwl_remove_default_wep_key(priv, ctx, key);
3378
		else
3379
			ret = iwl_remove_dynamic_key(priv, ctx, key, sta_id);
3380

3381
		IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
Z
Zhu Yi 已提交
3382 3383
		break;
	default:
3384
		ret = -EINVAL;
Z
Zhu Yi 已提交
3385 3386
	}

3387
	mutex_unlock(&priv->mutex);
3388
	IWL_DEBUG_MAC80211(priv, "leave\n");
Z
Zhu Yi 已提交
3389

3390
	return ret;
Z
Zhu Yi 已提交
3391 3392
}

3393 3394 3395 3396
int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw,
			    struct ieee80211_vif *vif,
			    enum ieee80211_ampdu_mlme_action action,
			    struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3397 3398
{
	struct iwl_priv *priv = hw->priv;
3399
	int ret = -EINVAL;
3400

3401
	IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
J
Johannes Berg 已提交
3402
		     sta->addr, tid);
3403 3404 3405 3406

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

3407 3408
	mutex_lock(&priv->mutex);

3409 3410
	switch (action) {
	case IEEE80211_AMPDU_RX_START:
3411
		IWL_DEBUG_HT(priv, "start Rx\n");
3412 3413
		ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
		break;
3414
	case IEEE80211_AMPDU_RX_STOP:
3415
		IWL_DEBUG_HT(priv, "stop Rx\n");
3416
		ret = iwl_sta_rx_agg_stop(priv, sta, tid);
3417
		if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3418 3419
			ret = 0;
		break;
3420
	case IEEE80211_AMPDU_TX_START:
3421
		IWL_DEBUG_HT(priv, "start Tx\n");
3422
		ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
W
Wey-Yi Guy 已提交
3423 3424 3425 3426 3427
		if (ret == 0) {
			priv->_agn.agg_tids_count++;
			IWL_DEBUG_HT(priv, "priv->_agn.agg_tids_count = %u\n",
				     priv->_agn.agg_tids_count);
		}
3428
		break;
3429
	case IEEE80211_AMPDU_TX_STOP:
3430
		IWL_DEBUG_HT(priv, "stop Tx\n");
3431
		ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
W
Wey-Yi Guy 已提交
3432 3433 3434 3435 3436
		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);
		}
3437
		if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3438
			ret = 0;
3439 3440
		if (priv->cfg->ht_params &&
		    priv->cfg->ht_params->use_rts_for_aggregation) {
J
Johannes Berg 已提交
3441 3442 3443 3444 3445 3446 3447 3448
			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;
3449 3450
			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
3451
		}
3452
		break;
3453
	case IEEE80211_AMPDU_TX_OPERATIONAL:
3454 3455
		if (priv->cfg->ht_params &&
		    priv->cfg->ht_params->use_rts_for_aggregation) {
J
Johannes Berg 已提交
3456 3457 3458
			struct iwl_station_priv *sta_priv =
				(void *) sta->drv_priv;

3459 3460 3461 3462
			/*
			 * switch to RTS/CTS if it is the prefer protection
			 * method for HT traffic
			 */
J
Johannes Berg 已提交
3463 3464 3465

			sta_priv->lq_sta.lq.general_params.flags |=
				LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
3466 3467
			iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
					&sta_priv->lq_sta.lq, CMD_ASYNC, false);
3468 3469
		}
		ret = 0;
3470 3471
		break;
	}
3472 3473 3474
	mutex_unlock(&priv->mutex);

	return ret;
3475
}
3476

3477 3478 3479 3480
static void iwlagn_mac_sta_notify(struct ieee80211_hw *hw,
				  struct ieee80211_vif *vif,
				  enum sta_notify_cmd cmd,
				  struct ieee80211_sta *sta)
3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494
{
	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
3495 3496
		if (!sta_priv->asleep)
			break;
3497
		sta_priv->asleep = false;
3498
		sta_id = iwl_sta_id(sta);
3499 3500 3501 3502 3503 3504 3505 3506
		if (sta_id != IWL_INVALID_STATION)
			iwl_sta_modify_ps_wake(priv, sta_id);
		break;
	default:
		break;
	}
}

3507 3508 3509
int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
		       struct ieee80211_vif *vif,
		       struct ieee80211_sta *sta)
3510 3511 3512
{
	struct iwl_priv *priv = hw->priv;
	struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
3513
	struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
3514
	bool is_ap = vif->type == NL80211_IFTYPE_STATION;
3515 3516 3517 3518 3519
	int ret;
	u8 sta_id;

	IWL_DEBUG_INFO(priv, "received request to add station %pM\n",
			sta->addr);
3520 3521 3522 3523
	mutex_lock(&priv->mutex);
	IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
			sta->addr);
	sta_priv->common.sta_id = IWL_INVALID_STATION;
3524 3525 3526 3527 3528

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

3529
	ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
3530
				     is_ap, sta, &sta_id);
3531 3532 3533 3534
	if (ret) {
		IWL_ERR(priv, "Unable to add station %pM (%d)\n",
			sta->addr, ret);
		/* Should we return success if return code is EEXIST ? */
3535
		mutex_unlock(&priv->mutex);
3536 3537 3538
		return ret;
	}

J
Johannes Berg 已提交
3539 3540
	sta_priv->common.sta_id = sta_id;

3541
	/* Initialize rate scaling */
3542
	IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
3543 3544
		       sta->addr);
	iwl_rs_rate_init(priv, sta, sta_id);
3545
	mutex_unlock(&priv->mutex);
3546

J
Johannes Berg 已提交
3547
	return 0;
3548 3549
}

3550 3551
void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
			       struct ieee80211_channel_switch *ch_switch)
3552 3553 3554 3555
{
	struct iwl_priv *priv = hw->priv;
	const struct iwl_channel_info *ch_info;
	struct ieee80211_conf *conf = &hw->conf;
3556
	struct ieee80211_channel *channel = ch_switch->channel;
3557
	struct iwl_ht_config *ht_conf = &priv->current_ht_config;
3558 3559 3560 3561 3562 3563 3564 3565 3566
	/*
	 * 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];
3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577 3578
	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;

3579
	if (!iwl_is_associated_ctx(ctx))
3580 3581 3582 3583 3584 3585 3586 3587 3588
		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) {

3589
		ch = channel->hw_value;
3590
		if (le16_to_cpu(ctx->active.channel) != ch) {
3591
			ch_info = iwl_get_channel_info(priv,
3592
						       channel->band,
3593 3594 3595 3596 3597 3598 3599 3600 3601 3602
						       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 */
3603 3604
			ctx->ht.enabled = conf_is_ht(conf);
			if (ctx->ht.enabled) {
3605
				if (conf_is_ht40_minus(conf)) {
3606
					ctx->ht.extension_chan_offset =
3607
						IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3608
					ctx->ht.is_40mhz = true;
3609
				} else if (conf_is_ht40_plus(conf)) {
3610
					ctx->ht.extension_chan_offset =
3611
						IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3612
					ctx->ht.is_40mhz = true;
3613
				} else {
3614
					ctx->ht.extension_chan_offset =
3615
						IEEE80211_HT_PARAM_CHA_SEC_NONE;
3616
					ctx->ht.is_40mhz = false;
3617 3618
				}
			} else
3619
				ctx->ht.is_40mhz = false;
3620

3621 3622
			if ((le16_to_cpu(ctx->staging.channel) != ch))
				ctx->staging.flags = 0;
3623

3624
			iwl_set_rxon_channel(priv, channel, ctx);
3625
			iwl_set_rxon_ht(priv, ht_conf);
3626
			iwl_set_flags_for_band(priv, ctx, channel->band,
3627
					       ctx->vif);
3628 3629 3630 3631 3632 3633 3634 3635 3636 3637 3638 3639 3640 3641 3642 3643
			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)
3644
		ieee80211_chswitch_done(ctx->vif, false);
3645 3646 3647
	IWL_DEBUG_MAC80211(priv, "leave\n");
}

3648 3649 3650 3651
void iwlagn_configure_filter(struct ieee80211_hw *hw,
			     unsigned int changed_flags,
			     unsigned int *total_flags,
			     u64 multicast)
J
Johannes Berg 已提交
3652 3653 3654
{
	struct iwl_priv *priv = hw->priv;
	__le32 filter_or = 0, filter_nand = 0;
3655
	struct iwl_rxon_context *ctx;
J
Johannes Berg 已提交
3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674

#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);

3675 3676 3677
	for_each_context(priv, ctx) {
		ctx->staging.filter_flags &= ~filter_nand;
		ctx->staging.filter_flags |= filter_or;
3678 3679 3680 3681 3682

		/*
		 * Not committing directly because hardware can perform a scan,
		 * but we'll eventually commit the filter flags change anyway.
		 */
3683
	}
J
Johannes Berg 已提交
3684 3685 3686 3687 3688 3689 3690 3691 3692 3693 3694 3695 3696

	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;
}

3697
void iwlagn_mac_flush(struct ieee80211_hw *hw, bool drop)
3698 3699 3700 3701 3702 3703 3704 3705 3706 3707 3708 3709 3710 3711 3712 3713 3714 3715 3716 3717 3718 3719 3720 3721 3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734
{
	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
3735 3736 3737 3738 3739 3740
/*****************************************************************************
 *
 * driver setup and teardown
 *
 *****************************************************************************/

3741
static void iwl_setup_deferred_work(struct iwl_priv *priv)
Z
Zhu Yi 已提交
3742
{
3743
	priv->workqueue = create_singlethread_workqueue(DRV_NAME);
Z
Zhu Yi 已提交
3744 3745 3746

	init_waitqueue_head(&priv->wait_command_queue);

3747 3748 3749
	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);
3750
	INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
3751
	INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
3752
	INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
3753
	INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
3754 3755
	INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
	INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
3756 3757

	iwl_setup_scan_deferred_work(priv);
C
Christoph Hellwig 已提交
3758

3759 3760 3761 3762 3763
	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;
3764
	priv->statistics_periodic.function = iwl_bg_statistics_periodic;
Z
Zhu Yi 已提交
3765

3766 3767 3768 3769
	init_timer(&priv->ucode_trace);
	priv->ucode_trace.data = (unsigned long)priv;
	priv->ucode_trace.function = iwl_bg_ucode_trace;

3770 3771 3772 3773 3774 3775 3776
	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;
	}

3777
	if (!priv->cfg->base_params->use_isr_legacy)
M
Mohamed Abbas 已提交
3778 3779 3780 3781 3782
		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
3783 3784
}

3785
static void iwl_cancel_deferred_work(struct iwl_priv *priv)
Z
Zhu Yi 已提交
3786
{
3787 3788
	if (priv->cfg->ops->lib->cancel_deferred_work)
		priv->cfg->ops->lib->cancel_deferred_work(priv);
Z
Zhu Yi 已提交
3789

3790
	cancel_delayed_work_sync(&priv->init_alive_start);
Z
Zhu Yi 已提交
3791
	cancel_delayed_work(&priv->alive_start);
3792
	cancel_work_sync(&priv->run_time_calib_work);
Z
Zhu Yi 已提交
3793
	cancel_work_sync(&priv->beacon_update);
3794 3795 3796

	iwl_cancel_scan_deferred_work(priv);

3797
	cancel_work_sync(&priv->bt_full_concurrency);
3798
	cancel_work_sync(&priv->bt_runtime_config);
3799

3800
	del_timer_sync(&priv->statistics_periodic);
3801
	del_timer_sync(&priv->ucode_trace);
Z
Zhu Yi 已提交
3802 3803
}

3804 3805 3806 3807 3808 3809 3810 3811 3812 3813 3814 3815 3816 3817 3818 3819 3820 3821 3822 3823 3824 3825 3826 3827 3828 3829 3830 3831 3832 3833 3834
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;

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

	INIT_LIST_HEAD(&priv->free_frames);

	mutex_init(&priv->mutex);
3835
	mutex_init(&priv->sync_cmd_mutex);
3836 3837 3838 3839 3840 3841

	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
3842
	priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
3843
	priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
W
Wey-Yi Guy 已提交
3844
	priv->_agn.agg_tids_count = 0;
3845

3846 3847 3848 3849 3850
	/* 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;
3851 3852 3853

	/* Choose which receivers/antennas to use */
	if (priv->cfg->ops->hcmd->set_rxon_chain)
3854 3855
		priv->cfg->ops->hcmd->set_rxon_chain(priv,
					&priv->contexts[IWL_RXON_CTX_BSS]);
3856 3857 3858

	iwl_init_scan_params(priv);

3859
	/* init bt coex */
3860 3861
	if (priv->cfg->bt_params &&
	    priv->cfg->bt_params->advanced_bt_coexist) {
W
Wey-Yi Guy 已提交
3862 3863 3864
		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;
3865 3866 3867 3868 3869 3870
		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;
	}

3871 3872 3873
	/* Set the tx_power_user_lmt to the lowest power level
	 * this value will get overwritten by channel max power avg
	 * from eeprom */
3874
	priv->tx_power_user_lmt = IWLAGN_TX_POWER_TARGET_POWER_MIN;
3875
	priv->tx_power_next = IWLAGN_TX_POWER_TARGET_POWER_MIN;
3876 3877 3878 3879 3880 3881 3882 3883 3884 3885 3886 3887 3888 3889 3890 3891 3892 3893 3894 3895 3896 3897 3898 3899 3900 3901 3902

	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);
3903
	kfree(priv->scan_cmd);
3904 3905
}

3906
struct ieee80211_ops iwlagn_hw_ops = {
3907 3908 3909
	.tx = iwlagn_mac_tx,
	.start = iwlagn_mac_start,
	.stop = iwlagn_mac_stop,
3910 3911
	.add_interface = iwl_mac_add_interface,
	.remove_interface = iwl_mac_remove_interface,
3912
	.change_interface = iwl_mac_change_interface,
3913
	.config = iwlagn_mac_config,
J
Johannes Berg 已提交
3914
	.configure_filter = iwlagn_configure_filter,
3915 3916
	.set_key = iwlagn_mac_set_key,
	.update_tkip_key = iwlagn_mac_update_tkip_key,
3917
	.conf_tx = iwl_mac_conf_tx,
3918 3919
	.bss_info_changed = iwlagn_bss_info_changed,
	.ampdu_action = iwlagn_mac_ampdu_action,
3920
	.hw_scan = iwl_mac_hw_scan,
3921
	.sta_notify = iwlagn_mac_sta_notify,
3922 3923
	.sta_add = iwlagn_mac_sta_add,
	.sta_remove = iwl_mac_sta_remove,
3924 3925
	.channel_switch = iwlagn_mac_channel_switch,
	.flush = iwlagn_mac_flush,
3926
	.tx_last_beacon = iwl_mac_tx_last_beacon,
Z
Zhu Yi 已提交
3927 3928
};

3929 3930 3931 3932 3933
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
3934
	IWL_DEBUG_INFO(priv, "HW Revision ID = 0x%X\n", priv->rev_id);
3935 3936
}

3937 3938 3939 3940 3941 3942 3943 3944 3945 3946 3947 3948 3949 3950 3951 3952 3953 3954
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);
}

3955 3956 3957 3958 3959 3960 3961 3962 3963 3964 3965 3966 3967 3968 3969 3970 3971 3972 3973 3974 3975 3976
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,
};

3977
static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
Z
Zhu Yi 已提交
3978
{
3979
	int err = 0, i;
3980
	struct iwl_priv *priv;
Z
Zhu Yi 已提交
3981
	struct ieee80211_hw *hw;
T
Tomas Winkler 已提交
3982
	struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3983
	unsigned long flags;
3984
	u16 pci_cmd, num_mac;
Z
Zhu Yi 已提交
3985

3986 3987 3988 3989
	/************************
	 * 1. Allocating HW data
	 ************************/

3990 3991
	/* Disabling hardware scan means that mac80211 will perform scans
	 * "the hard way", rather than using device's scan. */
3992
	if (cfg->mod_params->disable_hw_scan) {
3993 3994
		dev_printk(KERN_DEBUG, &(pdev->dev),
			"sw scan support is deprecated\n");
3995
		iwlagn_hw_ops.hw_scan = NULL;
3996 3997 3998
#ifdef CONFIG_IWL4965
		iwl4965_hw_ops.hw_scan = NULL;
#endif
Z
Zhu Yi 已提交
3999 4000
	}

4001
	hw = iwl_alloc_all(cfg);
4002
	if (!hw) {
Z
Zhu Yi 已提交
4003 4004 4005
		err = -ENOMEM;
		goto out;
	}
4006 4007 4008
	priv = hw->priv;
	/* At this point both hw and priv are allocated. */

4009 4010 4011 4012 4013 4014 4015 4016 4017 4018
	/*
	 * 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;

4019 4020
	priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
	priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
4021 4022 4023
	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
4024
	priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
4025
	priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
4026
	priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
4027 4028
	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;
4029 4030 4031 4032
	priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
		BIT(NL80211_IFTYPE_ADHOC);
	priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
		BIT(NL80211_IFTYPE_STATION);
4033
	priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
4034 4035 4036
	priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
	priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
	priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
J
Johannes Berg 已提交
4037 4038 4039 4040 4041 4042 4043 4044 4045

	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;
4046 4047 4048
	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;
4049 4050 4051 4052 4053
	priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
		BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
	priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
	priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
	priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
J
Johannes Berg 已提交
4054 4055

	BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
4056

Z
Zhu Yi 已提交
4057 4058
	SET_IEEE80211_DEV(hw, &pdev->dev);

4059
	IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
T
Tomas Winkler 已提交
4060
	priv->cfg = cfg;
Z
Zhu Yi 已提交
4061
	priv->pci_dev = pdev;
4062
	priv->inta_mask = CSR_INI_SET_MASK;
4063

4064 4065 4066 4067 4068
	/* is antenna coupling more than 35dB ? */
	priv->bt_ant_couple_ok =
		(iwlagn_ant_coupling > IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
		true : false;

4069 4070 4071
	/* enable/disable bt channel announcement */
	priv->bt_ch_announce = iwlagn_bt_ch_announce;

4072 4073
	if (iwl_alloc_traffic_mem(priv))
		IWL_ERR(priv, "Not enough memory to generate traffic log\n");
Z
Zhu Yi 已提交
4074

4075 4076 4077
	/**************************
	 * 2. Initializing PCI bus
	 **************************/
4078 4079 4080
	pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 |
				PCIE_LINK_STATE_CLKPM);

4081 4082 4083 4084 4085 4086 4087
	if (pci_enable_device(pdev)) {
		err = -ENODEV;
		goto out_ieee80211_free_hw;
	}

	pci_set_master(pdev);

W
Winkler, Tomas 已提交
4088
	err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
4089
	if (!err)
W
Winkler, Tomas 已提交
4090
		err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
4091
	if (err) {
W
Winkler, Tomas 已提交
4092
		err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4093
		if (!err)
W
Winkler, Tomas 已提交
4094
			err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
4095
		/* both attempts failed: */
4096
		if (err) {
T
Tomas Winkler 已提交
4097
			IWL_WARN(priv, "No suitable DMA available.\n");
4098
			goto out_pci_disable_device;
4099
		}
4100 4101 4102 4103 4104 4105 4106 4107 4108 4109 4110 4111 4112 4113 4114 4115 4116 4117
	}

	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;
	}

4118
	IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
4119
		(unsigned long long) pci_resource_len(pdev, 0));
4120
	IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
4121

4122
	/* these spin locks will be used in apm_ops.init and EEPROM access
M
Mohamed Abbas 已提交
4123 4124 4125
	 * we should init now
	 */
	spin_lock_init(&priv->reg_lock);
4126
	spin_lock_init(&priv->lock);
4127 4128 4129 4130 4131 4132 4133 4134

	/*
	 * 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);

4135
	iwl_hw_detect(priv);
4136
	IWL_INFO(priv, "Detected %s, REV=0x%X\n",
4137
		priv->cfg->name, priv->hw_rev);
4138

4139 4140 4141 4142
	/* 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
4143 4144 4145 4146 4147 4148
	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
4149 4150 4151
	/*****************
	 * 4. Read EEPROM
	 *****************/
4152 4153 4154
	/* Read the EEPROM */
	err = iwl_eeprom_init(priv);
	if (err) {
4155
		IWL_ERR(priv, "Unable to init EEPROM\n");
4156 4157
		goto out_iounmap;
	}
4158 4159
	err = iwl_eeprom_check_version(priv);
	if (err)
4160
		goto out_free_eeprom;
4161

4162
	/* extract MAC Address */
4163 4164 4165 4166 4167 4168 4169 4170 4171 4172 4173
	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++;
	}
4174 4175 4176 4177

	/************************
	 * 5. Setup HW constants
	 ************************/
4178
	if (iwl_set_hw_params(priv)) {
4179
		IWL_ERR(priv, "failed to set hw parameters\n");
4180
		goto out_free_eeprom;
4181 4182 4183
	}

	/*******************
T
Tomas Winkler 已提交
4184
	 * 6. Setup priv
4185
	 *******************/
Z
Zhu Yi 已提交
4186

T
Tomas Winkler 已提交
4187
	err = iwl_init_drv(priv);
4188
	if (err)
R
Ron Rindjunsky 已提交
4189
		goto out_free_eeprom;
4190
	/* At this point both hw and priv are initialized. */
4191 4192

	/********************
4193
	 * 7. Setup services
4194
	 ********************/
4195
	spin_lock_irqsave(&priv->lock, flags);
4196
	iwl_disable_interrupts(priv);
4197
	spin_unlock_irqrestore(&priv->lock, flags);
4198

4199 4200
	pci_enable_msi(priv->pci_dev);

M
Mohamed Abbas 已提交
4201 4202 4203
	iwl_alloc_isr_ict(priv);
	err = request_irq(priv->pci_dev->irq, priv->cfg->ops->lib->isr,
			  IRQF_SHARED, DRV_NAME, priv);
4204 4205 4206 4207
	if (err) {
		IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
		goto out_disable_msi;
	}
4208

4209
	iwl_setup_deferred_work(priv);
4210
	iwl_setup_rx_handlers(priv);
4211

J
Johannes Berg 已提交
4212 4213 4214
	/*********************************************
	 * 8. Enable interrupts and read RFKILL state
	 *********************************************/
T
Tomas Winkler 已提交
4215

4216 4217 4218 4219 4220 4221 4222 4223 4224 4225 4226 4227 4228 4229
	/* 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
4230

J
Johannes Berg 已提交
4231 4232
	wiphy_rfkill_set_hw_state(priv->hw->wiphy,
		test_bit(STATUS_RF_KILL_HW, &priv->status));
4233

4234
	iwl_power_initialize(priv);
4235
	iwl_tt_initialize(priv);
J
Johannes Berg 已提交
4236

4237
	init_completion(&priv->_agn.firmware_loading_complete);
4238

4239
	err = iwl_request_firmware(priv, true);
J
Johannes Berg 已提交
4240
	if (err)
4241
		goto out_destroy_workqueue;
J
Johannes Berg 已提交
4242

Z
Zhu Yi 已提交
4243 4244
	return 0;

4245
 out_destroy_workqueue:
4246 4247
	destroy_workqueue(priv->workqueue);
	priv->workqueue = NULL;
4248
	free_irq(priv->pci_dev->irq, priv);
M
Mohamed Abbas 已提交
4249
	iwl_free_isr_ict(priv);
4250 4251
 out_disable_msi:
	pci_disable_msi(priv->pci_dev);
T
Tomas Winkler 已提交
4252
	iwl_uninit_drv(priv);
4253 4254
 out_free_eeprom:
	iwl_eeprom_free(priv);
Z
Zhu Yi 已提交
4255 4256 4257
 out_iounmap:
	pci_iounmap(pdev, priv->hw_base);
 out_pci_release_regions:
4258
	pci_set_drvdata(pdev, NULL);
4259
	pci_release_regions(pdev);
Z
Zhu Yi 已提交
4260 4261 4262
 out_pci_disable_device:
	pci_disable_device(pdev);
 out_ieee80211_free_hw:
4263
	iwl_free_traffic_mem(priv);
4264
	ieee80211_free_hw(priv->hw);
Z
Zhu Yi 已提交
4265 4266 4267 4268
 out:
	return err;
}

4269
static void __devexit iwl_pci_remove(struct pci_dev *pdev)
Z
Zhu Yi 已提交
4270
{
4271
	struct iwl_priv *priv = pci_get_drvdata(pdev);
4272
	unsigned long flags;
Z
Zhu Yi 已提交
4273 4274 4275 4276

	if (!priv)
		return;

4277
	wait_for_completion(&priv->_agn.firmware_loading_complete);
4278

4279
	IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
Z
Zhu Yi 已提交
4280

4281
	iwl_dbgfs_unregister(priv);
4282
	sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
4283

4284 4285
	/* ieee80211_unregister_hw call wil cause iwl_mac_stop to
	 * to be called and iwl_down since we are removing the device
4286 4287 4288
	 * we need to set STATUS_EXIT_PENDING bit.
	 */
	set_bit(STATUS_EXIT_PENDING, &priv->status);
4289 4290 4291
	if (priv->mac80211_registered) {
		ieee80211_unregister_hw(priv->hw);
		priv->mac80211_registered = 0;
4292
	} else {
4293
		iwl_down(priv);
4294 4295
	}

4296 4297 4298 4299 4300 4301 4302
	/*
	 * 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.
	 */
J
Johannes Berg 已提交
4303
	iwl_apm_stop(priv);
4304

4305 4306
	iwl_tt_exit(priv);

4307 4308 4309 4310
	/* make sure we flush any pending irq or
	 * tasklet for the driver
	 */
	spin_lock_irqsave(&priv->lock, flags);
4311
	iwl_disable_interrupts(priv);
4312 4313 4314 4315
	spin_unlock_irqrestore(&priv->lock, flags);

	iwl_synchronize_irq(priv);

4316
	iwl_dealloc_ucode_pci(priv);
Z
Zhu Yi 已提交
4317 4318

	if (priv->rxq.bd)
4319
		iwlagn_rx_queue_free(priv, &priv->rxq);
4320
	iwlagn_hw_txq_ctx_free(priv);
Z
Zhu Yi 已提交
4321

4322
	iwl_eeprom_free(priv);
Z
Zhu Yi 已提交
4323 4324


M
Mohamed Abbas 已提交
4325 4326 4327
	/*netif_stop_queue(dev); */
	flush_workqueue(priv->workqueue);

4328
	/* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
Z
Zhu Yi 已提交
4329 4330 4331 4332
	 * priv->workqueue... so we can't take down the workqueue
	 * until now... */
	destroy_workqueue(priv->workqueue);
	priv->workqueue = NULL;
4333
	iwl_free_traffic_mem(priv);
Z
Zhu Yi 已提交
4334

4335 4336
	free_irq(priv->pci_dev->irq, priv);
	pci_disable_msi(priv->pci_dev);
Z
Zhu Yi 已提交
4337 4338 4339 4340 4341
	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
4342
	iwl_uninit_drv(priv);
Z
Zhu Yi 已提交
4343

M
Mohamed Abbas 已提交
4344 4345
	iwl_free_isr_ict(priv);

4346
	dev_kfree_skb(priv->beacon_skb);
Z
Zhu Yi 已提交
4347 4348 4349 4350 4351 4352 4353 4354 4355 4356 4357

	ieee80211_free_hw(priv->hw);
}


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

4358
/* Hardware specific file defines the PCI IDs table for that hardware module */
4359
static DEFINE_PCI_DEVICE_TABLE(iwl_hw_card_ids) = {
T
Tomas Winkler 已提交
4360
#ifdef CONFIG_IWL4965
4361 4362
	{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
4363
#endif /* CONFIG_IWL4965 */
4364
#ifdef CONFIG_IWL5000
4365 4366 4367 4368 4369 4370 4371 4372 4373 4374 4375 4376 4377 4378 4379 4380 4381 4382 4383 4384 4385 4386 4387 4388 4389 4390 4391 4392 4393 4394 4395 4396 4397 4398 4399 4400 4401 4402 4403 4404 4405 4406 4407 4408 4409 4410 4411 4412 4413 4414 4415 4416 4417 4418 4419 4420 4421
/* 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 */
4422 4423 4424 4425 4426 4427 4428 4429 4430 4431 4432 4433

/* 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)},
4434

4435
/* 6x00 Series Gen2a */
4436 4437 4438 4439 4440 4441 4442
	{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)},
4443 4444

/* 6x00 Series Gen2b */
4445 4446 4447
	{IWL_PCI_DEVICE(0x008A, 0x5305, iwl6000g2b_bgn_cfg)},
	{IWL_PCI_DEVICE(0x008A, 0x5307, iwl6000g2b_bg_cfg)},
	{IWL_PCI_DEVICE(0x008A, 0x5325, iwl6000g2b_bgn_cfg)},
4448
	{IWL_PCI_DEVICE(0x008A, 0x5327, iwl6000g2b_bg_cfg)},
4449
	{IWL_PCI_DEVICE(0x008B, 0x5315, iwl6000g2b_bgn_cfg)},
4450
	{IWL_PCI_DEVICE(0x008B, 0x5317, iwl6000g2b_bg_cfg)},
4451 4452 4453 4454 4455 4456 4457 4458 4459 4460
	{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)},
4461 4462 4463 4464 4465 4466 4467 4468 4469

/* 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)},

4470 4471 4472 4473 4474 4475 4476 4477
/* 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)},

4478
/* 1000 Series WiFi */
4479 4480 4481 4482 4483 4484 4485 4486 4487 4488 4489 4490
	{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)},
J
Jay Sternberg 已提交
4491

4492
/* 100 Series WiFi */
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Jay Sternberg 已提交
4493 4494 4495 4496 4497
	{IWL_PCI_DEVICE(0x08AE, 0x1005, iwl100_bgn_cfg)},
	{IWL_PCI_DEVICE(0x08AF, 0x1015, iwl100_bgn_cfg)},
	{IWL_PCI_DEVICE(0x08AE, 0x1025, iwl100_bgn_cfg)},
	{IWL_PCI_DEVICE(0x08AE, 0x1007, iwl100_bg_cfg)},
	{IWL_PCI_DEVICE(0x08AE, 0x1017, iwl100_bg_cfg)},
4498 4499 4500 4501 4502 4503 4504 4505 4506

/* 130 Series WiFi */
	{IWL_PCI_DEVICE(0x0896, 0x5005, iwl130_bgn_cfg)},
	{IWL_PCI_DEVICE(0x0896, 0x5007, iwl130_bg_cfg)},
	{IWL_PCI_DEVICE(0x0897, 0x5015, iwl130_bgn_cfg)},
	{IWL_PCI_DEVICE(0x0897, 0x5017, iwl130_bg_cfg)},
	{IWL_PCI_DEVICE(0x0896, 0x5025, iwl130_bgn_cfg)},
	{IWL_PCI_DEVICE(0x0896, 0x5027, iwl130_bg_cfg)},

4507
#endif /* CONFIG_IWL5000 */
T
Tomas Winkler 已提交
4508

4509 4510 4511 4512 4513
	{0}
};
MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);

static struct pci_driver iwl_driver = {
Z
Zhu Yi 已提交
4514
	.name = DRV_NAME,
4515
	.id_table = iwl_hw_card_ids,
4516 4517
	.probe = iwl_pci_probe,
	.remove = __devexit_p(iwl_pci_remove),
4518
	.driver.pm = IWL_PM_OPS,
Z
Zhu Yi 已提交
4519 4520
};

4521
static int __init iwl_init(void)
Z
Zhu Yi 已提交
4522 4523 4524
{

	int ret;
4525 4526
	pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
	pr_info(DRV_COPYRIGHT "\n");
4527

4528
	ret = iwlagn_rate_control_register();
4529
	if (ret) {
4530
		pr_err("Unable to register rate control algorithm: %d\n", ret);
4531 4532 4533
		return ret;
	}

4534
	ret = pci_register_driver(&iwl_driver);
Z
Zhu Yi 已提交
4535
	if (ret) {
4536
		pr_err("Unable to initialize PCI module\n");
4537
		goto error_register;
Z
Zhu Yi 已提交
4538 4539 4540
	}

	return ret;
4541 4542

error_register:
4543
	iwlagn_rate_control_unregister();
4544
	return ret;
Z
Zhu Yi 已提交
4545 4546
}

4547
static void __exit iwl_exit(void)
Z
Zhu Yi 已提交
4548
{
4549
	pci_unregister_driver(&iwl_driver);
4550
	iwlagn_rate_control_unregister();
Z
Zhu Yi 已提交
4551 4552
}

4553 4554
module_exit(iwl_exit);
module_init(iwl_init);
4555 4556

#ifdef CONFIG_IWLWIFI_DEBUG
4557
module_param_named(debug50, iwl_debug_level, uint, S_IRUGO);
4558
MODULE_PARM_DESC(debug50, "50XX debug output mask (deprecated)");
4559
module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
4560 4561 4562
MODULE_PARM_DESC(debug, "debug output mask");
#endif

4563 4564 4565 4566 4567 4568 4569 4570 4571 4572 4573 4574 4575 4576 4577 4578 4579 4580 4581 4582 4583 4584 4585 4586 4587 4588 4589 4590 4591
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);
4592 4593
MODULE_PARM_DESC(disable_hw_scan,
		 "disable hardware scanning (default 0) (deprecated)");
4594 4595 4596 4597 4598

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");
4599 4600 4601 4602

module_param_named(antenna_coupling, iwlagn_ant_coupling, int, S_IRUGO);
MODULE_PARM_DESC(antenna_coupling,
		 "specify antenna coupling in dB (defualt: 0 dB)");
4603 4604 4605 4606

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)");