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linux/drivers/net/wireless/iwlwifi/iwl-3945.h
reinette chatre 45f5fa32b1 iwlagn: fix minimum number of queues setting 
We need to provide a reasonable minimum that will result in a
working setup if used. Set minimum to be 10 to provide for
4 standard TX queues + 1 command queue + 2 (unused) HCCA queues +
4 HT queues (one per AC).

We allow the user to change the number of queues used via a module
parameter and use this minimum value to check if it is valid. Without
this patch a user can select a value for the number of queues that
will result in a failing setup.

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Reviewed-by: Tomas Winkler <tomas.winkler@intel.com>
Acked-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-07-27 15:19:35 -04:00

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/******************************************************************************
*
* Copyright(c) 2003 - 2009 Intel Corporation. All rights reserved.
*
* 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:
* Intel Linux Wireless <ilw@linux.intel.com>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*
*****************************************************************************/
/*
* Please use this file (iwl-3945.h) for driver implementation definitions.
* Please use iwl-3945-commands.h for uCode API definitions.
* Please use iwl-3945-hw.h for hardware-related definitions.
*/
#ifndef __iwl_3945_h__
#define __iwl_3945_h__
#include <linux/pci.h> /* for struct pci_device_id */
#include <linux/kernel.h>
#include <net/ieee80211_radiotap.h>
/* Hardware specific file defines the PCI IDs table for that hardware module */
extern struct pci_device_id iwl3945_hw_card_ids[];
#include "iwl-csr.h"
#include "iwl-prph.h"
#include "iwl-fh.h"
#include "iwl-3945-hw.h"
#include "iwl-debug.h"
#include "iwl-power.h"
#include "iwl-dev.h"
#include "iwl-3945-led.h"
/* Highest firmware API version supported */
#define IWL3945_UCODE_API_MAX 2
/* Lowest firmware API version supported */
#define IWL3945_UCODE_API_MIN 1
#define IWL3945_FW_PRE "iwlwifi-3945-"
#define _IWL3945_MODULE_FIRMWARE(api) IWL3945_FW_PRE #api ".ucode"
#define IWL3945_MODULE_FIRMWARE(api) _IWL3945_MODULE_FIRMWARE(api)
/* Default noise level to report when noise measurement is not available.
* This may be because we're:
* 1) Not associated (4965, no beacon statistics being sent to driver)
* 2) Scanning (noise measurement does not apply to associated channel)
* 3) Receiving CCK (3945 delivers noise info only for OFDM frames)
* Use default noise value of -127 ... this is below the range of measurable
* Rx dBm for either 3945 or 4965, so it can indicate "unmeasurable" to user.
* Also, -127 works better than 0 when averaging frames with/without
* noise info (e.g. averaging might be done in app); measured dBm values are
* always negative ... using a negative value as the default keeps all
* averages within an s8's (used in some apps) range of negative values. */
#define IWL_NOISE_MEAS_NOT_AVAILABLE (-127)
/* Module parameters accessible from iwl-*.c */
extern struct iwl_mod_params iwl3945_mod_params;
struct iwl3945_sta_priv {
struct iwl3945_rs_sta *rs_sta;
};
enum iwl3945_antenna {
IWL_ANTENNA_DIVERSITY,
IWL_ANTENNA_MAIN,
IWL_ANTENNA_AUX
};
/*
* RTS threshold here is total size [2347] minus 4 FCS bytes
* Per spec:
* a value of 0 means RTS on all data/management packets
* a value > max MSDU size means no RTS
* else RTS for data/management frames where MPDU is larger
* than RTS value.
*/
#define DEFAULT_RTS_THRESHOLD 2347U
#define MIN_RTS_THRESHOLD 0U
#define MAX_RTS_THRESHOLD 2347U
#define MAX_MSDU_SIZE 2304U
#define MAX_MPDU_SIZE 2346U
#define DEFAULT_BEACON_INTERVAL 100U
#define DEFAULT_SHORT_RETRY_LIMIT 7U
#define DEFAULT_LONG_RETRY_LIMIT 4U
#include "iwl-agn-rs.h"
#define IWL_TX_FIFO_AC0 0
#define IWL_TX_FIFO_AC1 1
#define IWL_TX_FIFO_AC2 2
#define IWL_TX_FIFO_AC3 3
#define IWL_TX_FIFO_HCCA_1 5
#define IWL_TX_FIFO_HCCA_2 6
#define IWL_TX_FIFO_NONE 7
/* Minimum number of queues. MAX_NUM is defined in hw specific files */
#define IWL39_MIN_NUM_QUEUES 4
#define IEEE80211_DATA_LEN 2304
#define IEEE80211_4ADDR_LEN 30
#define IEEE80211_HLEN (IEEE80211_4ADDR_LEN)
#define IEEE80211_FRAME_LEN (IEEE80211_DATA_LEN + IEEE80211_HLEN)
struct iwl3945_frame {
union {
struct ieee80211_hdr frame;
struct iwl3945_tx_beacon_cmd beacon;
u8 raw[IEEE80211_FRAME_LEN];
u8 cmd[360];
} u;
struct list_head list;
};
#define SEQ_TO_SN(seq) (((seq) & IEEE80211_SCTL_SEQ) >> 4)
#define SN_TO_SEQ(ssn) (((ssn) << 4) & IEEE80211_SCTL_SEQ)
#define MAX_SN ((IEEE80211_SCTL_SEQ) >> 4)
/*
* RX related structures and functions
*/
#define RX_FREE_BUFFERS 64
#define RX_LOW_WATERMARK 8
#define SUP_RATE_11A_MAX_NUM_CHANNELS 8
#define SUP_RATE_11B_MAX_NUM_CHANNELS 4
#define SUP_RATE_11G_MAX_NUM_CHANNELS 12
#define IWL_SUPPORTED_RATES_IE_LEN 8
#define SCAN_INTERVAL 100
#define STATUS_HCMD_ACTIVE 0 /* host command in progress */
#define STATUS_HCMD_SYNC_ACTIVE 1 /* sync host command in progress */
#define STATUS_INT_ENABLED 2
#define STATUS_RF_KILL_HW 3
#define STATUS_INIT 5
#define STATUS_ALIVE 6
#define STATUS_READY 7
#define STATUS_TEMPERATURE 8
#define STATUS_GEO_CONFIGURED 9
#define STATUS_EXIT_PENDING 10
#define STATUS_STATISTICS 12
#define STATUS_SCANNING 13
#define STATUS_SCAN_ABORTING 14
#define STATUS_SCAN_HW 15
#define STATUS_POWER_PMI 16
#define STATUS_FW_ERROR 17
#define STATUS_CONF_PENDING 18
#define MAX_TID_COUNT 9
#define IWL_INVALID_RATE 0xFF
#define IWL_INVALID_VALUE -1
#define STA_PS_STATUS_WAKE 0
#define STA_PS_STATUS_SLEEP 1
struct iwl3945_ibss_seq {
u8 mac[ETH_ALEN];
u16 seq_num;
u16 frag_num;
unsigned long packet_time;
struct list_head list;
};
#define IWL_RX_HDR(x) ((struct iwl3945_rx_frame_hdr *)(\
x->u.rx_frame.stats.payload + \
x->u.rx_frame.stats.phy_count))
#define IWL_RX_END(x) ((struct iwl3945_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
*
*****************************************************************************/
extern int iwl3945_power_init_handle(struct iwl_priv *priv);
extern int iwl3945_eeprom_init(struct iwl_priv *priv);
extern int iwl3945_calc_db_from_ratio(int sig_ratio);
extern int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm);
extern int iwl3945_tx_queue_init(struct iwl_priv *priv,
struct iwl_tx_queue *txq, int count, u32 id);
extern void iwl3945_rx_replenish(void *data);
extern void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq);
extern void iwl3945_tx_queue_free(struct iwl_priv *priv, struct iwl_tx_queue *txq);
extern int iwl3945_send_cmd_pdu(struct iwl_priv *priv, u8 id, u16 len,
const void *data);
extern int __must_check iwl3945_send_cmd(struct iwl_priv *priv,
struct iwl_host_cmd *cmd);
extern unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv,
struct ieee80211_hdr *hdr,int left);
/*
* Currently used by iwl-3945-rs... look at restructuring so that it doesn't
* call this... todo... fix that.
*/
extern u8 iwl3945_sync_station(struct iwl_priv *priv, int sta_id,
u16 tx_rate, u8 flags);
/******************************************************************************
*
* 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 --
* iwl3945_ <-- Its part of iwlwifi (should be changed to iwl3945_)
* iwl3945_hw_ <-- Hardware specific (implemented in iwl-XXXX.c by all HW)
* iwlXXXX_ <-- Hardware specific (implemented in iwl-XXXX.c for XXXX)
* iwl3945_bg_ <-- Called from work queue context
* iwl3945_mac_ <-- mac80211 callback
*
****************************************************************************/
extern void iwl3945_hw_rx_handler_setup(struct iwl_priv *priv);
extern void iwl3945_hw_setup_deferred_work(struct iwl_priv *priv);
extern void iwl3945_hw_cancel_deferred_work(struct iwl_priv *priv);
extern int iwl3945_hw_rxq_stop(struct iwl_priv *priv);
extern int iwl3945_hw_set_hw_params(struct iwl_priv *priv);
extern int iwl3945_hw_nic_init(struct iwl_priv *priv);
extern int iwl3945_hw_nic_stop_master(struct iwl_priv *priv);
extern void iwl3945_hw_txq_ctx_free(struct iwl_priv *priv);
extern void iwl3945_hw_txq_ctx_stop(struct iwl_priv *priv);
extern int iwl3945_hw_nic_reset(struct iwl_priv *priv);
extern int iwl3945_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);
extern void iwl3945_hw_txq_free_tfd(struct iwl_priv *priv,
struct iwl_tx_queue *txq);
extern int iwl3945_hw_get_temperature(struct iwl_priv *priv);
extern int iwl3945_hw_tx_queue_init(struct iwl_priv *priv,
struct iwl_tx_queue *txq);
extern unsigned int iwl3945_hw_get_beacon_cmd(struct iwl_priv *priv,
struct iwl3945_frame *frame, u8 rate);
void iwl3945_hw_build_tx_cmd_rate(struct iwl_priv *priv, struct iwl_cmd *cmd,
struct ieee80211_tx_info *info,
struct ieee80211_hdr *hdr,
int sta_id, int tx_id);
extern int iwl3945_hw_reg_send_txpower(struct iwl_priv *priv);
extern int iwl3945_hw_reg_set_txpower(struct iwl_priv *priv, s8 power);
extern void iwl3945_hw_rx_statistics(struct iwl_priv *priv,
struct iwl_rx_mem_buffer *rxb);
extern void iwl3945_disable_events(struct iwl_priv *priv);
extern int iwl4965_get_temperature(const struct iwl_priv *priv);
extern void iwl3945_post_associate(struct iwl_priv *priv);
extern void iwl3945_config_ap(struct iwl_priv *priv);
/**
* iwl3945_hw_find_station - Find station id for a given BSSID
* @bssid: MAC address of station ID to find
*
* NOTE: This should not be hardware specific but the code has
* not yet been merged into a single common layer for managing the
* station tables.
*/
extern u8 iwl3945_hw_find_station(struct iwl_priv *priv, const u8 *bssid);
extern int iwl3945_hw_channel_switch(struct iwl_priv *priv, u16 channel);
/*
* Forward declare iwl-3945.c functions for iwl-base.c
*/
extern __le32 iwl3945_get_antenna_flags(const struct iwl_priv *priv);
extern int iwl3945_init_hw_rate_table(struct iwl_priv *priv);
extern void iwl3945_reg_txpower_periodic(struct iwl_priv *priv);
extern int iwl3945_txpower_set_from_eeprom(struct iwl_priv *priv);
extern u8 iwl3945_sync_sta(struct iwl_priv *priv, int sta_id,
u16 tx_rate, u8 flags);
extern const struct iwl_channel_info *iwl3945_get_channel_info(
const struct iwl_priv *priv, enum ieee80211_band band, u16 channel);
extern int iwl3945_rs_next_rate(struct iwl_priv *priv, int rate);
/* Requires full declaration of iwl_priv before including */
#include "iwl-io.h"
#endif
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