![Gregory Greenman](/assets/img/avatar_default.png)
This patch optimizes memory allocation. The cmd member of iwl_tx_queue was allocated previously as a continuous block of memory. This patch allocates separate memory chunks for each command and maps/unmaps these chunks in the run time. Signed-off-by: Gregory Greenman <gregory.greenman@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Zhu Yi <yi.zhu@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
1168 lines
31 KiB
C
1168 lines
31 KiB
C
/******************************************************************************
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*
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* Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
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*
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* The full GNU General Public License is included in this distribution in the
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* file called LICENSE.
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*
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* Contact Information:
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* James P. Ketrenos <ipw2100-admin@linux.intel.com>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*
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*****************************************************************************/
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/*
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* Please use this file (iwl-dev.h) for driver implementation definitions.
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* Please use iwl-commands.h for uCode API definitions.
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* Please use iwl-4965-hw.h for hardware-related definitions.
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*/
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#ifndef __iwl_dev_h__
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#define __iwl_dev_h__
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#include <linux/pci.h> /* for struct pci_device_id */
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#include <linux/kernel.h>
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#include <net/ieee80211_radiotap.h>
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#define DRV_NAME "iwlagn"
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#include "iwl-rfkill.h"
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#include "iwl-eeprom.h"
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#include "iwl-4965-hw.h"
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#include "iwl-csr.h"
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#include "iwl-prph.h"
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#include "iwl-debug.h"
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#include "iwl-led.h"
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#include "iwl-power.h"
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#include "iwl-agn-rs.h"
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/* configuration for the iwl4965 */
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extern struct iwl_cfg iwl4965_agn_cfg;
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extern struct iwl_cfg iwl5300_agn_cfg;
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extern struct iwl_cfg iwl5100_agn_cfg;
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extern struct iwl_cfg iwl5350_agn_cfg;
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extern struct iwl_cfg iwl5100_bg_cfg;
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extern struct iwl_cfg iwl5100_abg_cfg;
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/* CT-KILL constants */
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#define CT_KILL_THRESHOLD 110 /* in Celsius */
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/* Default noise level to report when noise measurement is not available.
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* This may be because we're:
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* 1) Not associated (4965, no beacon statistics being sent to driver)
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* 2) Scanning (noise measurement does not apply to associated channel)
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* 3) Receiving CCK (3945 delivers noise info only for OFDM frames)
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* Use default noise value of -127 ... this is below the range of measurable
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* Rx dBm for either 3945 or 4965, so it can indicate "unmeasurable" to user.
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* Also, -127 works better than 0 when averaging frames with/without
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* noise info (e.g. averaging might be done in app); measured dBm values are
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* always negative ... using a negative value as the default keeps all
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* averages within an s8's (used in some apps) range of negative values. */
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#define IWL_NOISE_MEAS_NOT_AVAILABLE (-127)
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/*
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* RTS threshold here is total size [2347] minus 4 FCS bytes
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* Per spec:
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* a value of 0 means RTS on all data/management packets
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* a value > max MSDU size means no RTS
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* else RTS for data/management frames where MPDU is larger
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* than RTS value.
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*/
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#define DEFAULT_RTS_THRESHOLD 2347U
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#define MIN_RTS_THRESHOLD 0U
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#define MAX_RTS_THRESHOLD 2347U
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#define MAX_MSDU_SIZE 2304U
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#define MAX_MPDU_SIZE 2346U
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#define DEFAULT_BEACON_INTERVAL 100U
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#define DEFAULT_SHORT_RETRY_LIMIT 7U
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#define DEFAULT_LONG_RETRY_LIMIT 4U
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struct iwl_rx_mem_buffer {
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dma_addr_t dma_addr;
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struct sk_buff *skb;
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struct list_head list;
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};
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/*
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* Generic queue structure
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*
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* Contains common data for Rx and Tx queues
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*/
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struct iwl_queue {
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int n_bd; /* number of BDs in this queue */
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int write_ptr; /* 1-st empty entry (index) host_w*/
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int read_ptr; /* last used entry (index) host_r*/
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dma_addr_t dma_addr; /* physical addr for BD's */
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int n_window; /* safe queue window */
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u32 id;
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int low_mark; /* low watermark, resume queue if free
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* space more than this */
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int high_mark; /* high watermark, stop queue if free
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* space less than this */
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} __attribute__ ((packed));
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#define MAX_NUM_OF_TBS (20)
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/* One for each TFD */
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struct iwl_tx_info {
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struct sk_buff *skb[MAX_NUM_OF_TBS];
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};
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/**
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* struct iwl_tx_queue - Tx Queue for DMA
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* @q: generic Rx/Tx queue descriptor
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* @bd: base of circular buffer of TFDs
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* @cmd: array of command/Tx buffers
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* @dma_addr_cmd: physical address of cmd/tx buffer array
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* @txb: array of per-TFD driver data
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* @need_update: indicates need to update read/write index
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* @sched_retry: indicates queue is high-throughput aggregation (HT AGG) enabled
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*
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* A Tx queue consists of circular buffer of BDs (a.k.a. TFDs, transmit frame
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* descriptors) and required locking structures.
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*/
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struct iwl_tx_queue {
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struct iwl_queue q;
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struct iwl_tfd_frame *bd;
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struct iwl_cmd *cmd[TFD_TX_CMD_SLOTS];
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struct iwl_tx_info *txb;
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int need_update;
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int sched_retry;
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int active;
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};
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#define IWL_NUM_SCAN_RATES (2)
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struct iwl4965_channel_tgd_info {
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u8 type;
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s8 max_power;
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};
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struct iwl4965_channel_tgh_info {
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s64 last_radar_time;
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};
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/*
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* One for each channel, holds all channel setup data
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* Some of the fields (e.g. eeprom and flags/max_power_avg) are redundant
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* with one another!
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*/
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struct iwl_channel_info {
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struct iwl4965_channel_tgd_info tgd;
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struct iwl4965_channel_tgh_info tgh;
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struct iwl_eeprom_channel eeprom; /* EEPROM regulatory limit */
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struct iwl_eeprom_channel fat_eeprom; /* EEPROM regulatory limit for
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* FAT channel */
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u8 channel; /* channel number */
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u8 flags; /* flags copied from EEPROM */
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s8 max_power_avg; /* (dBm) regul. eeprom, normal Tx, any rate */
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s8 curr_txpow; /* (dBm) regulatory/spectrum/user (not h/w) limit */
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s8 min_power; /* always 0 */
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s8 scan_power; /* (dBm) regul. eeprom, direct scans, any rate */
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u8 group_index; /* 0-4, maps channel to group1/2/3/4/5 */
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u8 band_index; /* 0-4, maps channel to band1/2/3/4/5 */
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enum ieee80211_band band;
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/* FAT channel info */
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s8 fat_max_power_avg; /* (dBm) regul. eeprom, normal Tx, any rate */
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s8 fat_curr_txpow; /* (dBm) regulatory/spectrum/user (not h/w) */
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s8 fat_min_power; /* always 0 */
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s8 fat_scan_power; /* (dBm) eeprom, direct scans, any rate */
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u8 fat_flags; /* flags copied from EEPROM */
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u8 fat_extension_channel; /* HT_IE_EXT_CHANNEL_* */
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};
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struct iwl4965_clip_group {
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/* maximum power level to prevent clipping for each rate, derived by
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* us from this band's saturation power in EEPROM */
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const s8 clip_powers[IWL_MAX_RATES];
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};
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#define IWL_TX_FIFO_AC0 0
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#define IWL_TX_FIFO_AC1 1
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#define IWL_TX_FIFO_AC2 2
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#define IWL_TX_FIFO_AC3 3
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#define IWL_TX_FIFO_HCCA_1 5
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#define IWL_TX_FIFO_HCCA_2 6
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#define IWL_TX_FIFO_NONE 7
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/* Minimum number of queues. MAX_NUM is defined in hw specific files */
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#define IWL_MIN_NUM_QUEUES 4
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/* Power management (not Tx power) structures */
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enum iwl_pwr_src {
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IWL_PWR_SRC_VMAIN,
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IWL_PWR_SRC_VAUX,
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};
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#define IEEE80211_DATA_LEN 2304
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#define IEEE80211_4ADDR_LEN 30
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#define IEEE80211_HLEN (IEEE80211_4ADDR_LEN)
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#define IEEE80211_FRAME_LEN (IEEE80211_DATA_LEN + IEEE80211_HLEN)
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struct iwl_frame {
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union {
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struct ieee80211_hdr frame;
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struct iwl_tx_beacon_cmd beacon;
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u8 raw[IEEE80211_FRAME_LEN];
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u8 cmd[360];
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} u;
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struct list_head list;
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};
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#define SEQ_TO_QUEUE(x) ((x >> 8) & 0xbf)
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#define QUEUE_TO_SEQ(x) ((x & 0xbf) << 8)
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#define SEQ_TO_INDEX(x) ((u8)(x & 0xff))
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#define INDEX_TO_SEQ(x) ((u8)(x & 0xff))
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#define SEQ_HUGE_FRAME (0x4000)
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#define SEQ_RX_FRAME __constant_cpu_to_le16(0x8000)
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#define SEQ_TO_SN(seq) (((seq) & IEEE80211_SCTL_SEQ) >> 4)
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#define SN_TO_SEQ(ssn) (((ssn) << 4) & IEEE80211_SCTL_SEQ)
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#define MAX_SN ((IEEE80211_SCTL_SEQ) >> 4)
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enum {
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/* CMD_SIZE_NORMAL = 0, */
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CMD_SIZE_HUGE = (1 << 0),
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/* CMD_SYNC = 0, */
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CMD_ASYNC = (1 << 1),
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/* CMD_NO_SKB = 0, */
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CMD_WANT_SKB = (1 << 2),
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};
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struct iwl_cmd;
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struct iwl_priv;
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struct iwl_cmd_meta {
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struct iwl_cmd_meta *source;
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union {
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struct sk_buff *skb;
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int (*callback)(struct iwl_priv *priv,
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struct iwl_cmd *cmd, struct sk_buff *skb);
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} __attribute__ ((packed)) u;
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/* The CMD_SIZE_HUGE flag bit indicates that the command
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* structure is stored at the end of the shared queue memory. */
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u32 flags;
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} __attribute__ ((packed));
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#define IWL_CMD_MAX_PAYLOAD 320
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/**
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* struct iwl_cmd
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*
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* For allocation of the command and tx queues, this establishes the overall
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* size of the largest command we send to uCode, except for a scan command
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* (which is relatively huge; space is allocated separately).
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*/
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struct iwl_cmd {
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struct iwl_cmd_meta meta; /* driver data */
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struct iwl_cmd_header hdr; /* uCode API */
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union {
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struct iwl_addsta_cmd addsta;
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struct iwl_led_cmd led;
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u32 flags;
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u8 val8;
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u16 val16;
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u32 val32;
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struct iwl4965_bt_cmd bt;
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struct iwl4965_rxon_time_cmd rxon_time;
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struct iwl_powertable_cmd powertable;
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struct iwl_qosparam_cmd qosparam;
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struct iwl_tx_cmd tx;
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struct iwl4965_rxon_assoc_cmd rxon_assoc;
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struct iwl_rem_sta_cmd rm_sta;
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u8 *indirect;
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u8 payload[IWL_CMD_MAX_PAYLOAD];
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} __attribute__ ((packed)) cmd;
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} __attribute__ ((packed));
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struct iwl_host_cmd {
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u8 id;
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u16 len;
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struct iwl_cmd_meta meta;
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const void *data;
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};
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#define TFD_MAX_PAYLOAD_SIZE (sizeof(struct iwl_cmd) - \
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sizeof(struct iwl_cmd_meta))
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/*
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* RX related structures and functions
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*/
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#define RX_FREE_BUFFERS 64
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#define RX_LOW_WATERMARK 8
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#define SUP_RATE_11A_MAX_NUM_CHANNELS 8
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#define SUP_RATE_11B_MAX_NUM_CHANNELS 4
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#define SUP_RATE_11G_MAX_NUM_CHANNELS 12
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/**
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* struct iwl_rx_queue - Rx queue
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* @processed: Internal index to last handled Rx packet
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* @read: Shared index to newest available Rx buffer
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* @write: Shared index to oldest written Rx packet
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* @free_count: Number of pre-allocated buffers in rx_free
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* @rx_free: list of free SKBs for use
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* @rx_used: List of Rx buffers with no SKB
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* @need_update: flag to indicate we need to update read/write index
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*
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* NOTE: rx_free and rx_used are used as a FIFO for iwl_rx_mem_buffers
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*/
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struct iwl_rx_queue {
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__le32 *bd;
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dma_addr_t dma_addr;
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struct iwl_rx_mem_buffer pool[RX_QUEUE_SIZE + RX_FREE_BUFFERS];
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struct iwl_rx_mem_buffer *queue[RX_QUEUE_SIZE];
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u32 processed;
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u32 read;
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u32 write;
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u32 free_count;
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struct list_head rx_free;
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struct list_head rx_used;
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int need_update;
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spinlock_t lock;
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};
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#define IWL_SUPPORTED_RATES_IE_LEN 8
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#define SCAN_INTERVAL 100
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#define MAX_A_CHANNELS 252
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#define MIN_A_CHANNELS 7
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#define MAX_B_CHANNELS 14
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#define MIN_B_CHANNELS 1
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#define MAX_TID_COUNT 9
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#define IWL_INVALID_RATE 0xFF
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#define IWL_INVALID_VALUE -1
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/**
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* struct iwl_ht_agg -- aggregation status while waiting for block-ack
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* @txq_id: Tx queue used for Tx attempt
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* @frame_count: # frames attempted by Tx command
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* @wait_for_ba: Expect block-ack before next Tx reply
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* @start_idx: Index of 1st Transmit Frame Descriptor (TFD) in Tx window
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* @bitmap0: Low order bitmap, one bit for each frame pending ACK in Tx window
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* @bitmap1: High order, one bit for each frame pending ACK in Tx window
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* @rate_n_flags: Rate at which Tx was attempted
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*
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* If REPLY_TX indicates that aggregation was attempted, driver must wait
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* for block ack (REPLY_COMPRESSED_BA). This struct stores tx reply info
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* until block ack arrives.
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*/
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struct iwl_ht_agg {
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u16 txq_id;
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u16 frame_count;
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u16 wait_for_ba;
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u16 start_idx;
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u64 bitmap;
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u32 rate_n_flags;
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#define IWL_AGG_OFF 0
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#define IWL_AGG_ON 1
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#define IWL_EMPTYING_HW_QUEUE_ADDBA 2
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#define IWL_EMPTYING_HW_QUEUE_DELBA 3
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u8 state;
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};
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struct iwl_tid_data {
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u16 seq_number;
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u16 tfds_in_queue;
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struct iwl_ht_agg agg;
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};
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struct iwl_hw_key {
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enum ieee80211_key_alg alg;
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int keylen;
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u8 keyidx;
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u8 key[32];
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};
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union iwl4965_ht_rate_supp {
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u16 rates;
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struct {
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u8 siso_rate;
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u8 mimo_rate;
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};
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};
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#define CFG_HT_RX_AMPDU_FACTOR_DEF (0x3)
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#define CFG_HT_MPDU_DENSITY_2USEC (0x5)
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#define CFG_HT_MPDU_DENSITY_DEF CFG_HT_MPDU_DENSITY_2USEC
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struct iwl_ht_info {
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/* self configuration data */
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u8 is_ht;
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u8 supported_chan_width;
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u16 tx_mimo_ps_mode;
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u8 is_green_field;
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u8 sgf; /* HT_SHORT_GI_* short guard interval */
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u8 max_amsdu_size;
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u8 ampdu_factor;
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u8 mpdu_density;
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u8 supp_mcs_set[16];
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/* BSS related data */
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u8 control_channel;
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u8 extension_chan_offset;
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u8 tx_chan_width;
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u8 ht_protection;
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u8 non_GF_STA_present;
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};
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union iwl_qos_capabity {
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struct {
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u8 edca_count:4; /* bit 0-3 */
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u8 q_ack:1; /* bit 4 */
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u8 queue_request:1; /* bit 5 */
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u8 txop_request:1; /* bit 6 */
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u8 reserved:1; /* bit 7 */
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} q_AP;
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struct {
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u8 acvo_APSD:1; /* bit 0 */
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u8 acvi_APSD:1; /* bit 1 */
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u8 ac_bk_APSD:1; /* bit 2 */
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u8 ac_be_APSD:1; /* bit 3 */
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u8 q_ack:1; /* bit 4 */
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u8 max_len:2; /* bit 5-6 */
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u8 more_data_ack:1; /* bit 7 */
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} q_STA;
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u8 val;
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};
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/* QoS structures */
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struct iwl_qos_info {
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int qos_enable;
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int qos_active;
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union iwl_qos_capabity qos_cap;
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struct iwl_qosparam_cmd def_qos_parm;
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};
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#define STA_PS_STATUS_WAKE 0
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#define STA_PS_STATUS_SLEEP 1
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struct iwl_station_entry {
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struct iwl_addsta_cmd sta;
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struct iwl_tid_data tid[MAX_TID_COUNT];
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u8 used;
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u8 ps_status;
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struct iwl_hw_key keyinfo;
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};
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/* one for each uCode image (inst/data, boot/init/runtime) */
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struct fw_desc {
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void *v_addr; /* access by driver */
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dma_addr_t p_addr; /* access by card's busmaster DMA */
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u32 len; /* bytes */
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};
|
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|
|
/* uCode file layout */
|
|
struct iwl_ucode {
|
|
__le32 ver; /* major/minor/subminor */
|
|
__le32 inst_size; /* bytes of runtime instructions */
|
|
__le32 data_size; /* bytes of runtime data */
|
|
__le32 init_size; /* bytes of initialization instructions */
|
|
__le32 init_data_size; /* bytes of initialization data */
|
|
__le32 boot_size; /* bytes of bootstrap instructions */
|
|
u8 data[0]; /* data in same order as "size" elements */
|
|
};
|
|
|
|
struct iwl4965_ibss_seq {
|
|
u8 mac[ETH_ALEN];
|
|
u16 seq_num;
|
|
u16 frag_num;
|
|
unsigned long packet_time;
|
|
struct list_head list;
|
|
};
|
|
|
|
struct iwl_sensitivity_ranges {
|
|
u16 min_nrg_cck;
|
|
u16 max_nrg_cck;
|
|
|
|
u16 nrg_th_cck;
|
|
u16 nrg_th_ofdm;
|
|
|
|
u16 auto_corr_min_ofdm;
|
|
u16 auto_corr_min_ofdm_mrc;
|
|
u16 auto_corr_min_ofdm_x1;
|
|
u16 auto_corr_min_ofdm_mrc_x1;
|
|
|
|
u16 auto_corr_max_ofdm;
|
|
u16 auto_corr_max_ofdm_mrc;
|
|
u16 auto_corr_max_ofdm_x1;
|
|
u16 auto_corr_max_ofdm_mrc_x1;
|
|
|
|
u16 auto_corr_max_cck;
|
|
u16 auto_corr_max_cck_mrc;
|
|
u16 auto_corr_min_cck;
|
|
u16 auto_corr_min_cck_mrc;
|
|
};
|
|
|
|
|
|
#define IWL_FAT_CHANNEL_52 BIT(IEEE80211_BAND_5GHZ)
|
|
|
|
/**
|
|
* struct iwl_hw_params
|
|
* @max_txq_num: Max # Tx queues supported
|
|
* @tx/rx_chains_num: Number of TX/RX chains
|
|
* @valid_tx/rx_ant: usable antennas
|
|
* @max_rxq_size: Max # Rx frames in Rx queue (must be power-of-2)
|
|
* @max_rxq_log: Log-base-2 of max_rxq_size
|
|
* @rx_buf_size: Rx buffer size
|
|
* @max_stations:
|
|
* @bcast_sta_id:
|
|
* @fat_channel: is 40MHz width possible in band 2.4
|
|
* BIT(IEEE80211_BAND_5GHZ) BIT(IEEE80211_BAND_5GHZ)
|
|
* @sw_crypto: 0 for hw, 1 for sw
|
|
* @max_xxx_size: for ucode uses
|
|
* @ct_kill_threshold: temperature threshold
|
|
* @struct iwl_sensitivity_ranges: range of sensitivity values
|
|
* @first_ampdu_q: first HW queue available for ampdu
|
|
*/
|
|
struct iwl_hw_params {
|
|
u16 max_txq_num;
|
|
u8 tx_chains_num;
|
|
u8 rx_chains_num;
|
|
u8 valid_tx_ant;
|
|
u8 valid_rx_ant;
|
|
u16 max_rxq_size;
|
|
u16 max_rxq_log;
|
|
u32 rx_buf_size;
|
|
u32 max_pkt_size;
|
|
u8 max_stations;
|
|
u8 bcast_sta_id;
|
|
u8 fat_channel;
|
|
u8 sw_crypto;
|
|
u32 max_inst_size;
|
|
u32 max_data_size;
|
|
u32 max_bsm_size;
|
|
u32 ct_kill_threshold; /* value in hw-dependent units */
|
|
const struct iwl_sensitivity_ranges *sens;
|
|
u8 first_ampdu_q;
|
|
};
|
|
|
|
#define HT_SHORT_GI_20MHZ (1 << 0)
|
|
#define HT_SHORT_GI_40MHZ (1 << 1)
|
|
|
|
|
|
#define IWL_RX_HDR(x) ((struct iwl4965_rx_frame_hdr *)(\
|
|
x->u.rx_frame.stats.payload + \
|
|
x->u.rx_frame.stats.phy_count))
|
|
#define IWL_RX_END(x) ((struct iwl4965_rx_frame_end *)(\
|
|
IWL_RX_HDR(x)->payload + \
|
|
le16_to_cpu(IWL_RX_HDR(x)->len)))
|
|
#define IWL_RX_STATS(x) (&x->u.rx_frame.stats)
|
|
#define IWL_RX_DATA(x) (IWL_RX_HDR(x)->payload)
|
|
|
|
|
|
/******************************************************************************
|
|
*
|
|
* Functions implemented in iwl-base.c which are forward declared here
|
|
* for use by iwl-*.c
|
|
*
|
|
*****************************************************************************/
|
|
struct iwl_addsta_cmd;
|
|
extern int iwl_send_add_sta(struct iwl_priv *priv,
|
|
struct iwl_addsta_cmd *sta, u8 flags);
|
|
u8 iwl_add_station_flags(struct iwl_priv *priv, const u8 *addr, int is_ap,
|
|
u8 flags, struct ieee80211_ht_info *ht_info);
|
|
extern unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
|
|
struct ieee80211_hdr *hdr,
|
|
const u8 *dest, int left);
|
|
extern void iwl4965_update_chain_flags(struct iwl_priv *priv);
|
|
int iwl4965_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src);
|
|
extern int iwl4965_set_power(struct iwl_priv *priv, void *cmd);
|
|
|
|
extern const u8 iwl_bcast_addr[ETH_ALEN];
|
|
|
|
/******************************************************************************
|
|
*
|
|
* Functions implemented in iwl-[34]*.c which are forward declared here
|
|
* for use by iwl-base.c
|
|
*
|
|
* NOTE: The implementation of these functions are hardware specific
|
|
* which is why they are in the hardware specific files (vs. iwl-base.c)
|
|
*
|
|
* Naming convention --
|
|
* iwl4965_ <-- Its part of iwlwifi (should be changed to iwl4965_)
|
|
* iwl4965_hw_ <-- Hardware specific (implemented in iwl-XXXX.c by all HW)
|
|
* iwlXXXX_ <-- Hardware specific (implemented in iwl-XXXX.c for XXXX)
|
|
* iwl4965_bg_ <-- Called from work queue context
|
|
* iwl4965_mac_ <-- mac80211 callback
|
|
*
|
|
****************************************************************************/
|
|
extern int iwl_rxq_stop(struct iwl_priv *priv);
|
|
extern void iwl_txq_ctx_stop(struct iwl_priv *priv);
|
|
extern unsigned int iwl4965_hw_get_beacon_cmd(struct iwl_priv *priv,
|
|
struct iwl_frame *frame, u8 rate);
|
|
extern void iwl4965_disable_events(struct iwl_priv *priv);
|
|
|
|
extern int iwl4965_hw_channel_switch(struct iwl_priv *priv, u16 channel);
|
|
extern int iwl_queue_space(const struct iwl_queue *q);
|
|
static inline int iwl_queue_used(const struct iwl_queue *q, int i)
|
|
{
|
|
return q->write_ptr > q->read_ptr ?
|
|
(i >= q->read_ptr && i < q->write_ptr) :
|
|
!(i < q->read_ptr && i >= q->write_ptr);
|
|
}
|
|
|
|
|
|
static inline u8 get_cmd_index(struct iwl_queue *q, u32 index, int is_huge)
|
|
{
|
|
/* This is for scan command, the big buffer at end of command array */
|
|
if (is_huge)
|
|
return q->n_window; /* must be power of 2 */
|
|
|
|
/* Otherwise, use normal size buffers */
|
|
return index & (q->n_window - 1);
|
|
}
|
|
|
|
|
|
struct iwl_priv;
|
|
|
|
/*
|
|
* Forward declare iwl-4965.c functions for iwl-base.c
|
|
*/
|
|
extern void iwl4965_rf_kill_ct_config(struct iwl_priv *priv);
|
|
int iwl4965_check_empty_hw_queue(struct iwl_priv *priv, int sta_id,
|
|
u8 tid, int txq_id);
|
|
|
|
/* Structures, enum, and defines specific to the 4965 */
|
|
|
|
#define IWL_KW_SIZE 0x1000 /*4k */
|
|
|
|
struct iwl_kw {
|
|
dma_addr_t dma_addr;
|
|
void *v_addr;
|
|
size_t size;
|
|
};
|
|
|
|
#define IWL_CHANNEL_WIDTH_20MHZ 0
|
|
#define IWL_CHANNEL_WIDTH_40MHZ 1
|
|
|
|
#define IWL_MIMO_PS_STATIC 0
|
|
#define IWL_MIMO_PS_NONE 3
|
|
#define IWL_MIMO_PS_DYNAMIC 1
|
|
#define IWL_MIMO_PS_INVALID 2
|
|
|
|
#define IWL_OPERATION_MODE_AUTO 0
|
|
#define IWL_OPERATION_MODE_HT_ONLY 1
|
|
#define IWL_OPERATION_MODE_MIXED 2
|
|
#define IWL_OPERATION_MODE_20MHZ 3
|
|
|
|
#define IWL_TX_CRC_SIZE 4
|
|
#define IWL_TX_DELIMITER_SIZE 4
|
|
|
|
#define TX_POWER_IWL_ILLEGAL_VOLTAGE -10000
|
|
|
|
struct iwl4965_lq_mngr {
|
|
spinlock_t lock;
|
|
s32 max_window_size;
|
|
s32 *expected_tpt;
|
|
u8 *next_higher_rate;
|
|
u8 *next_lower_rate;
|
|
unsigned long stamp;
|
|
unsigned long stamp_last;
|
|
u32 flush_time;
|
|
u32 tx_packets;
|
|
};
|
|
|
|
/* Sensitivity and chain noise calibration */
|
|
#define INTERFERENCE_DATA_AVAILABLE __constant_cpu_to_le32(1)
|
|
#define INITIALIZATION_VALUE 0xFFFF
|
|
#define CAL_NUM_OF_BEACONS 20
|
|
#define MAXIMUM_ALLOWED_PATHLOSS 15
|
|
|
|
#define CHAIN_NOISE_MAX_DELTA_GAIN_CODE 3
|
|
|
|
#define MAX_FA_OFDM 50
|
|
#define MIN_FA_OFDM 5
|
|
#define MAX_FA_CCK 50
|
|
#define MIN_FA_CCK 5
|
|
|
|
#define AUTO_CORR_STEP_OFDM 1
|
|
|
|
#define AUTO_CORR_STEP_CCK 3
|
|
#define AUTO_CORR_MAX_TH_CCK 160
|
|
|
|
#define NRG_DIFF 2
|
|
#define NRG_STEP_CCK 2
|
|
#define NRG_MARGIN 8
|
|
#define MAX_NUMBER_CCK_NO_FA 100
|
|
|
|
#define AUTO_CORR_CCK_MIN_VAL_DEF (125)
|
|
|
|
#define CHAIN_A 0
|
|
#define CHAIN_B 1
|
|
#define CHAIN_C 2
|
|
#define CHAIN_NOISE_DELTA_GAIN_INIT_VAL 4
|
|
#define ALL_BAND_FILTER 0xFF00
|
|
#define IN_BAND_FILTER 0xFF
|
|
#define MIN_AVERAGE_NOISE_MAX_VALUE 0xFFFFFFFF
|
|
|
|
#define NRG_NUM_PREV_STAT_L 20
|
|
#define NUM_RX_CHAINS 3
|
|
|
|
enum iwl4965_false_alarm_state {
|
|
IWL_FA_TOO_MANY = 0,
|
|
IWL_FA_TOO_FEW = 1,
|
|
IWL_FA_GOOD_RANGE = 2,
|
|
};
|
|
|
|
enum iwl4965_chain_noise_state {
|
|
IWL_CHAIN_NOISE_ALIVE = 0, /* must be 0 */
|
|
IWL_CHAIN_NOISE_ACCUMULATE = 1,
|
|
IWL_CHAIN_NOISE_CALIBRATED = 2,
|
|
};
|
|
|
|
enum iwl4965_calib_enabled_state {
|
|
IWL_CALIB_DISABLED = 0, /* must be 0 */
|
|
IWL_CALIB_ENABLED = 1,
|
|
};
|
|
|
|
struct statistics_general_data {
|
|
u32 beacon_silence_rssi_a;
|
|
u32 beacon_silence_rssi_b;
|
|
u32 beacon_silence_rssi_c;
|
|
u32 beacon_energy_a;
|
|
u32 beacon_energy_b;
|
|
u32 beacon_energy_c;
|
|
};
|
|
|
|
struct iwl_calib_results {
|
|
void *tx_iq_res;
|
|
void *tx_iq_perd_res;
|
|
void *lo_res;
|
|
u32 tx_iq_res_len;
|
|
u32 tx_iq_perd_res_len;
|
|
u32 lo_res_len;
|
|
};
|
|
|
|
enum ucode_type {
|
|
UCODE_NONE = 0,
|
|
UCODE_INIT,
|
|
UCODE_RT
|
|
};
|
|
|
|
/* Sensitivity calib data */
|
|
struct iwl_sensitivity_data {
|
|
u32 auto_corr_ofdm;
|
|
u32 auto_corr_ofdm_mrc;
|
|
u32 auto_corr_ofdm_x1;
|
|
u32 auto_corr_ofdm_mrc_x1;
|
|
u32 auto_corr_cck;
|
|
u32 auto_corr_cck_mrc;
|
|
|
|
u32 last_bad_plcp_cnt_ofdm;
|
|
u32 last_fa_cnt_ofdm;
|
|
u32 last_bad_plcp_cnt_cck;
|
|
u32 last_fa_cnt_cck;
|
|
|
|
u32 nrg_curr_state;
|
|
u32 nrg_prev_state;
|
|
u32 nrg_value[10];
|
|
u8 nrg_silence_rssi[NRG_NUM_PREV_STAT_L];
|
|
u32 nrg_silence_ref;
|
|
u32 nrg_energy_idx;
|
|
u32 nrg_silence_idx;
|
|
u32 nrg_th_cck;
|
|
s32 nrg_auto_corr_silence_diff;
|
|
u32 num_in_cck_no_fa;
|
|
u32 nrg_th_ofdm;
|
|
};
|
|
|
|
/* Chain noise (differential Rx gain) calib data */
|
|
struct iwl_chain_noise_data {
|
|
u8 state;
|
|
u16 beacon_count;
|
|
u32 chain_noise_a;
|
|
u32 chain_noise_b;
|
|
u32 chain_noise_c;
|
|
u32 chain_signal_a;
|
|
u32 chain_signal_b;
|
|
u32 chain_signal_c;
|
|
u8 disconn_array[NUM_RX_CHAINS];
|
|
u8 delta_gain_code[NUM_RX_CHAINS];
|
|
u8 radio_write;
|
|
};
|
|
|
|
#define EEPROM_SEM_TIMEOUT 10 /* milliseconds */
|
|
#define EEPROM_SEM_RETRY_LIMIT 1000 /* number of attempts (not time) */
|
|
|
|
|
|
enum {
|
|
MEASUREMENT_READY = (1 << 0),
|
|
MEASUREMENT_ACTIVE = (1 << 1),
|
|
};
|
|
|
|
|
|
#define IWL_MAX_NUM_QUEUES 20 /* FIXME: do dynamic allocation */
|
|
|
|
struct iwl_priv {
|
|
|
|
/* ieee device used by generic ieee processing code */
|
|
struct ieee80211_hw *hw;
|
|
struct ieee80211_channel *ieee_channels;
|
|
struct ieee80211_rate *ieee_rates;
|
|
struct iwl_cfg *cfg;
|
|
|
|
/* temporary frame storage list */
|
|
struct list_head free_frames;
|
|
int frames_count;
|
|
|
|
enum ieee80211_band band;
|
|
int alloc_rxb_skb;
|
|
bool add_radiotap;
|
|
|
|
void (*rx_handlers[REPLY_MAX])(struct iwl_priv *priv,
|
|
struct iwl_rx_mem_buffer *rxb);
|
|
|
|
struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
|
|
|
|
#ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
|
|
/* spectrum measurement report caching */
|
|
struct iwl4965_spectrum_notification measure_report;
|
|
u8 measurement_status;
|
|
#endif
|
|
/* ucode beacon time */
|
|
u32 ucode_beacon_time;
|
|
|
|
/* we allocate array of iwl4965_channel_info for NIC's valid channels.
|
|
* Access via channel # using indirect index array */
|
|
struct iwl_channel_info *channel_info; /* channel info array */
|
|
u8 channel_count; /* # of channels */
|
|
|
|
/* each calibration channel group in the EEPROM has a derived
|
|
* clip setting for each rate. */
|
|
const struct iwl4965_clip_group clip_groups[5];
|
|
|
|
/* thermal calibration */
|
|
s32 temperature; /* degrees Kelvin */
|
|
s32 last_temperature;
|
|
|
|
/* init calibration results */
|
|
struct iwl_calib_results calib_results;
|
|
|
|
/* Scan related variables */
|
|
unsigned long last_scan_jiffies;
|
|
unsigned long next_scan_jiffies;
|
|
unsigned long scan_start;
|
|
unsigned long scan_pass_start;
|
|
unsigned long scan_start_tsf;
|
|
int scan_bands;
|
|
int one_direct_scan;
|
|
u8 direct_ssid_len;
|
|
u8 direct_ssid[IW_ESSID_MAX_SIZE];
|
|
struct iwl_scan_cmd *scan;
|
|
u32 scan_tx_ant[IEEE80211_NUM_BANDS];
|
|
|
|
/* spinlock */
|
|
spinlock_t lock; /* protect general shared data */
|
|
spinlock_t hcmd_lock; /* protect hcmd */
|
|
struct mutex mutex;
|
|
|
|
/* basic pci-network driver stuff */
|
|
struct pci_dev *pci_dev;
|
|
|
|
/* pci hardware address support */
|
|
void __iomem *hw_base;
|
|
u32 hw_rev;
|
|
u32 hw_wa_rev;
|
|
u8 rev_id;
|
|
|
|
/* uCode images, save to reload in case of failure */
|
|
struct fw_desc ucode_code; /* runtime inst */
|
|
struct fw_desc ucode_data; /* runtime data original */
|
|
struct fw_desc ucode_data_backup; /* runtime data save/restore */
|
|
struct fw_desc ucode_init; /* initialization inst */
|
|
struct fw_desc ucode_init_data; /* initialization data */
|
|
struct fw_desc ucode_boot; /* bootstrap inst */
|
|
enum ucode_type ucode_type;
|
|
u8 ucode_write_complete; /* the image write is complete */
|
|
|
|
|
|
struct iwl4965_rxon_time_cmd rxon_timing;
|
|
|
|
/* We declare this const so it can only be
|
|
* changed via explicit cast within the
|
|
* routines that actually update the physical
|
|
* hardware */
|
|
const struct iwl_rxon_cmd active_rxon;
|
|
struct iwl_rxon_cmd staging_rxon;
|
|
|
|
int error_recovering;
|
|
struct iwl_rxon_cmd recovery_rxon;
|
|
|
|
/* 1st responses from initialize and runtime uCode images.
|
|
* 4965's initialize alive response contains some calibration data. */
|
|
struct iwl_init_alive_resp card_alive_init;
|
|
struct iwl_alive_resp card_alive;
|
|
#ifdef CONFIG_IWLWIFI_RFKILL
|
|
struct rfkill *rfkill;
|
|
#endif
|
|
|
|
#ifdef CONFIG_IWLWIFI_LEDS
|
|
struct iwl_led led[IWL_LED_TRG_MAX];
|
|
unsigned long last_blink_time;
|
|
u8 last_blink_rate;
|
|
u8 allow_blinking;
|
|
u64 led_tpt;
|
|
#endif
|
|
|
|
u16 active_rate;
|
|
u16 active_rate_basic;
|
|
|
|
u8 assoc_station_added;
|
|
u8 use_ant_b_for_management_frame; /* Tx antenna selection */
|
|
u8 start_calib;
|
|
struct iwl_sensitivity_data sensitivity_data;
|
|
struct iwl_chain_noise_data chain_noise_data;
|
|
__le16 sensitivity_tbl[HD_TABLE_SIZE];
|
|
|
|
struct iwl_ht_info current_ht_config;
|
|
u8 last_phy_res[100];
|
|
|
|
/* Rate scaling data */
|
|
struct iwl4965_lq_mngr lq_mngr;
|
|
|
|
/* Rate scaling data */
|
|
s8 data_retry_limit;
|
|
u8 retry_rate;
|
|
|
|
wait_queue_head_t wait_command_queue;
|
|
|
|
int activity_timer_active;
|
|
|
|
/* Rx and Tx DMA processing queues */
|
|
struct iwl_rx_queue rxq;
|
|
struct iwl_tx_queue txq[IWL_MAX_NUM_QUEUES];
|
|
unsigned long txq_ctx_active_msk;
|
|
struct iwl_kw kw; /* keep warm address */
|
|
u32 scd_base_addr; /* scheduler sram base address */
|
|
|
|
unsigned long status;
|
|
|
|
int last_rx_rssi; /* From Rx packet statisitics */
|
|
int last_rx_noise; /* From beacon statistics */
|
|
|
|
/* counts mgmt, ctl, and data packets */
|
|
struct traffic_stats {
|
|
u32 cnt;
|
|
u64 bytes;
|
|
} tx_stats[3], rx_stats[3];
|
|
|
|
struct iwl_power_mgr power_data;
|
|
|
|
struct iwl_notif_statistics statistics;
|
|
unsigned long last_statistics_time;
|
|
|
|
/* context information */
|
|
u8 essid[IW_ESSID_MAX_SIZE];
|
|
u8 essid_len;
|
|
u16 rates_mask;
|
|
|
|
u32 power_mode;
|
|
u32 antenna;
|
|
u8 bssid[ETH_ALEN];
|
|
u16 rts_threshold;
|
|
u8 mac_addr[ETH_ALEN];
|
|
|
|
/*station table variables */
|
|
spinlock_t sta_lock;
|
|
int num_stations;
|
|
struct iwl_station_entry stations[IWL_STATION_COUNT];
|
|
struct iwl_wep_key wep_keys[WEP_KEYS_MAX];
|
|
u8 default_wep_key;
|
|
u8 key_mapping_key;
|
|
unsigned long ucode_key_table;
|
|
|
|
/* Indication if ieee80211_ops->open has been called */
|
|
u8 is_open;
|
|
|
|
u8 mac80211_registered;
|
|
|
|
/* Rx'd packet timing information */
|
|
u32 last_beacon_time;
|
|
u64 last_tsf;
|
|
|
|
/* eeprom */
|
|
u8 *eeprom;
|
|
struct iwl_eeprom_calib_info *calib_info;
|
|
|
|
enum ieee80211_if_types iw_mode;
|
|
|
|
struct sk_buff *ibss_beacon;
|
|
|
|
/* Last Rx'd beacon timestamp */
|
|
u64 timestamp;
|
|
u16 beacon_int;
|
|
struct ieee80211_vif *vif;
|
|
|
|
struct iwl_hw_params hw_params;
|
|
/* driver/uCode shared Tx Byte Counts and Rx status */
|
|
void *shared_virt;
|
|
int rb_closed_offset;
|
|
/* Physical Pointer to Tx Byte Counts and Rx status */
|
|
dma_addr_t shared_phys;
|
|
|
|
/* Current association information needed to configure the
|
|
* hardware */
|
|
u16 assoc_id;
|
|
u16 assoc_capability;
|
|
u8 ps_mode;
|
|
|
|
struct iwl_qos_info qos_data;
|
|
|
|
struct workqueue_struct *workqueue;
|
|
|
|
struct work_struct up;
|
|
struct work_struct restart;
|
|
struct work_struct calibrated_work;
|
|
struct work_struct scan_completed;
|
|
struct work_struct rx_replenish;
|
|
struct work_struct rf_kill;
|
|
struct work_struct abort_scan;
|
|
struct work_struct update_link_led;
|
|
struct work_struct auth_work;
|
|
struct work_struct report_work;
|
|
struct work_struct request_scan;
|
|
struct work_struct beacon_update;
|
|
struct work_struct set_monitor;
|
|
|
|
struct tasklet_struct irq_tasklet;
|
|
|
|
struct delayed_work init_alive_start;
|
|
struct delayed_work alive_start;
|
|
struct delayed_work scan_check;
|
|
/* TX Power */
|
|
s8 tx_power_user_lmt;
|
|
s8 tx_power_channel_lmt;
|
|
|
|
#ifdef CONFIG_PM
|
|
u32 pm_state[16];
|
|
#endif
|
|
|
|
#ifdef CONFIG_IWLWIFI_DEBUG
|
|
/* debugging info */
|
|
u32 debug_level;
|
|
u32 framecnt_to_us;
|
|
atomic_t restrict_refcnt;
|
|
#ifdef CONFIG_IWLWIFI_DEBUGFS
|
|
/* debugfs */
|
|
struct iwl_debugfs *dbgfs;
|
|
#endif /* CONFIG_IWLWIFI_DEBUGFS */
|
|
#endif /* CONFIG_IWLWIFI_DEBUG */
|
|
|
|
struct work_struct txpower_work;
|
|
u32 disable_sens_cal;
|
|
u32 disable_chain_noise_cal;
|
|
u32 disable_tx_power_cal;
|
|
struct work_struct run_time_calib_work;
|
|
struct timer_list statistics_periodic;
|
|
}; /*iwl_priv */
|
|
|
|
static inline void iwl_txq_ctx_activate(struct iwl_priv *priv, int txq_id)
|
|
{
|
|
set_bit(txq_id, &priv->txq_ctx_active_msk);
|
|
}
|
|
|
|
static inline void iwl_txq_ctx_deactivate(struct iwl_priv *priv, int txq_id)
|
|
{
|
|
clear_bit(txq_id, &priv->txq_ctx_active_msk);
|
|
}
|
|
|
|
#ifdef CONFIG_IWLWIFI_DEBUG
|
|
const char *iwl_get_tx_fail_reason(u32 status);
|
|
#else
|
|
static inline const char *iwl_get_tx_fail_reason(u32 status) { return ""; }
|
|
#endif
|
|
|
|
|
|
static inline struct ieee80211_hdr *iwl_tx_queue_get_hdr(struct iwl_priv *priv,
|
|
int txq_id, int idx)
|
|
{
|
|
if (priv->txq[txq_id].txb[idx].skb[0])
|
|
return (struct ieee80211_hdr *)priv->txq[txq_id].
|
|
txb[idx].skb[0]->data;
|
|
return NULL;
|
|
}
|
|
|
|
|
|
static inline int iwl_is_associated(struct iwl_priv *priv)
|
|
{
|
|
return (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ? 1 : 0;
|
|
}
|
|
|
|
static inline int is_channel_valid(const struct iwl_channel_info *ch_info)
|
|
{
|
|
if (ch_info == NULL)
|
|
return 0;
|
|
return (ch_info->flags & EEPROM_CHANNEL_VALID) ? 1 : 0;
|
|
}
|
|
|
|
static inline int is_channel_radar(const struct iwl_channel_info *ch_info)
|
|
{
|
|
return (ch_info->flags & EEPROM_CHANNEL_RADAR) ? 1 : 0;
|
|
}
|
|
|
|
static inline u8 is_channel_a_band(const struct iwl_channel_info *ch_info)
|
|
{
|
|
return ch_info->band == IEEE80211_BAND_5GHZ;
|
|
}
|
|
|
|
static inline u8 is_channel_bg_band(const struct iwl_channel_info *ch_info)
|
|
{
|
|
return ch_info->band == IEEE80211_BAND_2GHZ;
|
|
}
|
|
|
|
static inline int is_channel_passive(const struct iwl_channel_info *ch)
|
|
{
|
|
return (!(ch->flags & EEPROM_CHANNEL_ACTIVE)) ? 1 : 0;
|
|
}
|
|
|
|
static inline int is_channel_ibss(const struct iwl_channel_info *ch)
|
|
{
|
|
return ((ch->flags & EEPROM_CHANNEL_IBSS)) ? 1 : 0;
|
|
}
|
|
|
|
#ifdef CONFIG_IWLWIFI_DEBUG
|
|
static inline void iwl_print_hex_dump(struct iwl_priv *priv, int level,
|
|
void *p, u32 len)
|
|
{
|
|
if (!(priv->debug_level & level))
|
|
return;
|
|
|
|
print_hex_dump(KERN_DEBUG, "iwl data: ", DUMP_PREFIX_OFFSET, 16, 1,
|
|
p, len, 1);
|
|
}
|
|
#else
|
|
static inline void iwl_print_hex_dump(struct iwl_priv *priv, int level,
|
|
void *p, u32 len)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
extern const struct iwl_channel_info *iwl_get_channel_info(
|
|
const struct iwl_priv *priv, enum ieee80211_band band, u16 channel);
|
|
|
|
/* Requires full declaration of iwl_priv before including */
|
|
|
|
#endif /* __iwl_dev_h__ */
|