/****************************************************************************** * * This file is provided under a dual BSD/GPLv2 license. When using or * redistributing this file, you may do so under either license. * * GPL LICENSE SUMMARY * * Copyright(c) 2007 - 2011 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.GPL. * * Contact Information: * Intel Linux Wireless * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 * * BSD LICENSE * * Copyright(c) 2005 - 2011 Intel Corporation. All rights reserved. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * Neither the name Intel Corporation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * *****************************************************************************/ #ifndef __iwl_shared_h__ #define __iwl_shared_h__ #include #include #include #include #include /* for page_address */ #include #include "iwl-commands.h" /** * DOC: shared area - role and goal * * The shared area contains all the data exported by the upper layer to the * other layers. Since the bus and transport layer shouldn't dereference * iwl_priv, all the data needed by the upper layer and the transport / bus * layer must be here. * The shared area also holds pointer to all the other layers. This allows a * layer to call a function from another layer. * * NOTE: All the layers hold a pointer to the shared area which must be shrd. * A few macros assume that (_m)->shrd points to the shared area no matter * what _m is. * * gets notifications about enumeration, suspend, resume. * For the moment, the bus layer is not a linux kernel module as itself, and * the module_init function of the driver must call the bus specific * registration functions. These functions are listed at the end of this file. * For the moment, there is only one implementation of this interface: PCI-e. * This implementation is iwl-pci.c */ struct iwl_cfg; struct iwl_bus; struct iwl_priv; struct iwl_sensitivity_ranges; struct iwl_trans_ops; #define DRV_NAME "iwlagn" #define IWLWIFI_VERSION "in-tree:" #define DRV_COPYRIGHT "Copyright(c) 2003-2011 Intel Corporation" #define DRV_AUTHOR "" extern struct iwl_mod_params iwlagn_mod_params; /** * struct iwl_mod_params * * Holds the module parameters * * @sw_crypto: using hardware encryption, default = 0 * @num_of_queues: number of tx queue, HW dependent * @disable_11n: 11n capabilities enabled, default = 0 * @amsdu_size_8K: enable 8K amsdu size, default = 1 * @antenna: both antennas (use diversity), default = 0 * @restart_fw: restart firmware, default = 1 * @plcp_check: enable plcp health check, default = true * @ack_check: disable ack health check, default = false * @wd_disable: enable stuck queue check, default = false * @bt_coex_active: enable bt coex, default = true * @led_mode: system default, default = 0 * @no_sleep_autoadjust: disable autoadjust, default = true * @power_save: disable power save, default = false * @power_level: power level, default = 1 * @debug_level: levels are IWL_DL_* * @ant_coupling: antenna coupling in dB, default = 0 * @bt_ch_announce: BT channel inhibition, default = enable * @wanted_ucode_alternative: ucode alternative to use, default = 1 * @auto_agg: enable agg. without check, default = true */ struct iwl_mod_params { int sw_crypto; int num_of_queues; int disable_11n; int amsdu_size_8K; int antenna; int restart_fw; bool plcp_check; bool ack_check; bool wd_disable; bool bt_coex_active; int led_mode; bool no_sleep_autoadjust; bool power_save; int power_level; u32 debug_level; int ant_coupling; bool bt_ch_announce; int wanted_ucode_alternative; bool auto_agg; }; /** * struct iwl_hw_params * * Holds the module parameters * * @max_txq_num: Max # Tx queues supported * @num_ampdu_queues: num of ampdu queues * @tx_chains_num: Number of TX chains * @rx_chains_num: Number of RX chains * @valid_tx_ant: usable antennas for TX * @valid_rx_ant: usable antennas for RX * @max_stations: the maximal number of stations * @ht40_channel: is 40MHz width possible: BIT(IEEE80211_BAND_XXX) * @sku: sku read from EEPROM * @rx_page_order: Rx buffer page order * @max_inst_size: for ucode use * @max_data_size: for ucode use * @ct_kill_threshold: temperature threshold - in hw dependent unit * @ct_kill_exit_threshold: when to reeable the device - in hw dependent unit * relevant for 1000, 6000 and up * @wd_timeout: TX queues watchdog timeout * @calib_init_cfg: setup initial calibrations for the hw * @calib_rt_cfg: setup runtime calibrations for the hw * @struct iwl_sensitivity_ranges: range of sensitivity values */ struct iwl_hw_params { u8 max_txq_num; u8 num_ampdu_queues; u8 tx_chains_num; u8 rx_chains_num; u8 valid_tx_ant; u8 valid_rx_ant; u8 max_stations; u8 ht40_channel; bool shadow_reg_enable; u16 sku; u32 rx_page_order; u32 max_inst_size; u32 max_data_size; u32 ct_kill_threshold; u32 ct_kill_exit_threshold; unsigned int wd_timeout; u32 calib_init_cfg; u32 calib_rt_cfg; const struct iwl_sensitivity_ranges *sens; }; /** * enum iwl_agg_state * * The state machine of the BA agreement establishment / tear down. * These states relate to a specific RA / TID. * * @IWL_AGG_OFF: aggregation is not used * @IWL_AGG_ON: aggregation session is up * @IWL_EMPTYING_HW_QUEUE_ADDBA: establishing a BA session - waiting for the * HW queue to be empty from packets for this RA /TID. * @IWL_EMPTYING_HW_QUEUE_DELBA: tearing down a BA session - waiting for the * HW queue to be empty from packets for this RA /TID. */ enum iwl_agg_state { IWL_AGG_OFF = 0, IWL_AGG_ON, IWL_EMPTYING_HW_QUEUE_ADDBA, IWL_EMPTYING_HW_QUEUE_DELBA, }; /** * struct iwl_ht_agg - aggregation state machine * This structs holds the states for the BA agreement establishment and tear * down. It also holds the state during the BA session itself. This struct is * duplicated for each RA / TID. * @rate_n_flags: Rate at which Tx was attempted. Holds the data between the * Tx response (REPLY_TX), and the block ack notification * (REPLY_COMPRESSED_BA). * @state: state of the BA agreement establishment / tear down. * @txq_id: Tx queue used by the BA session - used by the transport layer. * Needed by the upper layer for debugfs only. * @wait_for_ba: Expect block-ack before next Tx reply */ struct iwl_ht_agg { u32 rate_n_flags; enum iwl_agg_state state; u16 txq_id; bool wait_for_ba; }; /** * struct iwl_tid_data - one for each RA / TID * This structs holds the states for each RA / TID. * @seq_number: the next WiFi sequence number to use * @tfds_in_queue: number of packets sent to the HW queues. * Exported for debugfs only * @agg: aggregation state machine */ struct iwl_tid_data { u16 seq_number; u16 tfds_in_queue; struct iwl_ht_agg agg; }; /** * struct iwl_shared - shared fields for all the layers of the driver * * @dbg_level_dev: dbg level set per device. Prevails on * iwlagn_mod_params.debug_level if set (!= 0) * @ucode_owner: IWL_OWNERSHIP_* * @cmd_queue: command queue number * @status: STATUS_* * @valid_contexts: microcode/device supports multiple contexts * @bus: pointer to the bus layer data * @priv: pointer to the upper layer data * @hw_params: see struct iwl_hw_params * @workqueue: the workqueue used by all the layers of the driver * @lock: protect general shared data * @sta_lock: protects the station table. * If lock and sta_lock are needed, lock must be acquired first. * @mutex: */ struct iwl_shared { #ifdef CONFIG_IWLWIFI_DEBUG u32 dbg_level_dev; #endif /* CONFIG_IWLWIFI_DEBUG */ #define IWL_OWNERSHIP_DRIVER 0 #define IWL_OWNERSHIP_TM 1 u8 ucode_owner; u8 cmd_queue; unsigned long status; bool wowlan; u8 valid_contexts; struct iwl_bus *bus; struct iwl_priv *priv; struct iwl_trans *trans; struct iwl_hw_params hw_params; struct workqueue_struct *workqueue; spinlock_t lock; spinlock_t sta_lock; struct mutex mutex; struct iwl_tid_data tid_data[IWLAGN_STATION_COUNT][IWL_MAX_TID_COUNT]; wait_queue_head_t wait_command_queue; }; /*Whatever _m is (iwl_trans, iwl_priv, iwl_bus, these macros will work */ #define priv(_m) ((_m)->shrd->priv) #define bus(_m) ((_m)->shrd->bus) #define trans(_m) ((_m)->shrd->trans) #define hw_params(_m) ((_m)->shrd->hw_params) #ifdef CONFIG_IWLWIFI_DEBUG /* * iwl_get_debug_level: Return active debug level for device * * Using sysfs it is possible to set per device debug level. This debug * level will be used if set, otherwise the global debug level which can be * set via module parameter is used. */ static inline u32 iwl_get_debug_level(struct iwl_shared *shrd) { if (shrd->dbg_level_dev) return shrd->dbg_level_dev; else return iwlagn_mod_params.debug_level; } #else static inline u32 iwl_get_debug_level(struct iwl_shared *shrd) { return iwlagn_mod_params.debug_level; } #endif static inline void iwl_free_pages(struct iwl_shared *shrd, unsigned long page) { free_pages(page, shrd->hw_params.rx_page_order); } /** * iwl_queue_inc_wrap - increment queue index, wrap back to beginning * @index -- current index * @n_bd -- total number of entries in queue (must be power of 2) */ static inline int iwl_queue_inc_wrap(int index, int n_bd) { return ++index & (n_bd - 1); } /** * iwl_queue_dec_wrap - decrement queue index, wrap back to end * @index -- current index * @n_bd -- total number of entries in queue (must be power of 2) */ static inline int iwl_queue_dec_wrap(int index, int n_bd) { return --index & (n_bd - 1); } struct iwl_rx_mem_buffer { dma_addr_t page_dma; struct page *page; struct list_head list; }; #define rxb_addr(r) page_address(r->page) /* * mac80211 queues, ACs, hardware queues, FIFOs. * * Cf. http://wireless.kernel.org/en/developers/Documentation/mac80211/queues * * Mac80211 uses the following numbers, which we get as from it * by way of skb_get_queue_mapping(skb): * * VO 0 * VI 1 * BE 2 * BK 3 * * * Regular (not A-MPDU) frames are put into hardware queues corresponding * to the FIFOs, see comments in iwl-prph.h. Aggregated frames get their * own queue per aggregation session (RA/TID combination), such queues are * set up to map into FIFOs too, for which we need an AC->FIFO mapping. In * order to map frames to the right queue, we also need an AC->hw queue * mapping. This is implemented here. * * Due to the way hw queues are set up (by the hw specific modules like * iwl-4965.c, iwl-5000.c etc.), the AC->hw queue mapping is the identity * mapping. */ static const u8 tid_to_ac[] = { IEEE80211_AC_BE, IEEE80211_AC_BK, IEEE80211_AC_BK, IEEE80211_AC_BE, IEEE80211_AC_VI, IEEE80211_AC_VI, IEEE80211_AC_VO, IEEE80211_AC_VO }; static inline int get_ac_from_tid(u16 tid) { if (likely(tid < ARRAY_SIZE(tid_to_ac))) return tid_to_ac[tid]; /* no support for TIDs 8-15 yet */ return -EINVAL; } enum iwl_rxon_context_id { IWL_RXON_CTX_BSS, IWL_RXON_CTX_PAN, NUM_IWL_RXON_CTX }; int iwl_probe(struct iwl_bus *bus, const struct iwl_trans_ops *trans_ops, struct iwl_cfg *cfg); void __devexit iwl_remove(struct iwl_priv * priv); void iwl_rx_dispatch(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb); int iwlagn_hw_valid_rtc_data_addr(u32 addr); void iwl_start_tx_ba_trans_ready(struct iwl_priv *priv, enum iwl_rxon_context_id ctx, u8 sta_id, u8 tid); void iwl_stop_tx_ba_trans_ready(struct iwl_priv *priv, enum iwl_rxon_context_id ctx, u8 sta_id, u8 tid); void iwl_set_hw_rfkill_state(struct iwl_priv *priv, bool state); void iwl_nic_config(struct iwl_priv *priv); void iwl_free_skb(struct iwl_priv *priv, struct sk_buff *skb); void iwl_apm_stop(struct iwl_priv *priv); int iwl_apm_init(struct iwl_priv *priv); void iwlagn_fw_error(struct iwl_priv *priv, bool ondemand); const char *get_cmd_string(u8 cmd); bool iwl_check_for_ct_kill(struct iwl_priv *priv); void iwl_stop_sw_queue(struct iwl_priv *priv, u8 ac); void iwl_wake_sw_queue(struct iwl_priv *priv, u8 ac); #ifdef CONFIG_IWLWIFI_DEBUGFS void iwl_reset_traffic_log(struct iwl_priv *priv); #endif /* CONFIG_IWLWIFI_DEBUGFS */ #ifdef CONFIG_IWLWIFI_DEBUG void iwl_print_rx_config_cmd(struct iwl_priv *priv, enum iwl_rxon_context_id ctxid); #else static inline void iwl_print_rx_config_cmd(struct iwl_priv *priv, enum iwl_rxon_context_id ctxid) { } #endif #define IWL_CMD(x) case x: return #x #define IWL_MASK(lo, hi) ((1 << (hi)) | ((1 << (hi)) - (1 << (lo)))) #define IWL_TRAFFIC_ENTRIES (256) #define IWL_TRAFFIC_ENTRY_SIZE (64) /***************************************************** * DRIVER STATUS FUNCTIONS ******************************************************/ #define STATUS_HCMD_ACTIVE 0 /* host command in progress */ /* 1 is unused (used to be STATUS_HCMD_SYNC_ACTIVE) */ #define STATUS_INT_ENABLED 2 #define STATUS_RF_KILL_HW 3 #define STATUS_CT_KILL 4 #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_DEVICE_ENABLED 18 #define STATUS_CHANNEL_SWITCH_PENDING 19 static inline int iwl_is_ready(struct iwl_shared *shrd) { /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are * set but EXIT_PENDING is not */ return test_bit(STATUS_READY, &shrd->status) && test_bit(STATUS_GEO_CONFIGURED, &shrd->status) && !test_bit(STATUS_EXIT_PENDING, &shrd->status); } static inline int iwl_is_alive(struct iwl_shared *shrd) { return test_bit(STATUS_ALIVE, &shrd->status); } static inline int iwl_is_init(struct iwl_shared *shrd) { return test_bit(STATUS_INIT, &shrd->status); } static inline int iwl_is_rfkill_hw(struct iwl_shared *shrd) { return test_bit(STATUS_RF_KILL_HW, &shrd->status); } static inline int iwl_is_rfkill(struct iwl_shared *shrd) { return iwl_is_rfkill_hw(shrd); } static inline int iwl_is_ctkill(struct iwl_shared *shrd) { return test_bit(STATUS_CT_KILL, &shrd->status); } static inline int iwl_is_ready_rf(struct iwl_shared *shrd) { if (iwl_is_rfkill(shrd)) return 0; return iwl_is_ready(shrd); } #endif /* #__iwl_shared_h__ */