| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Christian Lamparter | 2378 | 99.25% | 20 | 74.07% |
| Ronald Wahl | 6 | 0.25% | 2 | 7.41% |
| Thomas Huehn | 5 | 0.21% | 1 | 3.70% |
| Pavel Roskin | 4 | 0.17% | 1 | 3.70% |
| Hauke Mehrtens | 1 | 0.04% | 1 | 3.70% |
| Johannes Berg | 1 | 0.04% | 1 | 3.70% |
| Lucas De Marchi | 1 | 0.04% | 1 | 3.70% |
| Total | 2396 | 27 |
/* * Atheros CARL9170 driver * * Driver specific definitions * * Copyright 2008, Johannes Berg <johannes@sipsolutions.net> * Copyright 2009, 2010, Christian Lamparter <chunkeey@googlemail.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * 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; see the file COPYING. If not, see * http://www.gnu.org/licenses/. * * This file incorporates work covered by the following copyright and * permission notice: * Copyright (c) 2007-2008 Atheros Communications, Inc. * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #ifndef __CARL9170_H #define __CARL9170_H #include <linux/kernel.h> #include <linux/firmware.h> #include <linux/completion.h> #include <linux/spinlock.h> #include <linux/hw_random.h> #include <net/cfg80211.h> #include <net/mac80211.h> #include <linux/usb.h> #ifdef CONFIG_CARL9170_LEDS #include <linux/leds.h> #endif /* CONFIG_CARL9170_LEDS */ #ifdef CONFIG_CARL9170_WPC #include <linux/input.h> #endif /* CONFIG_CARL9170_WPC */ #include "eeprom.h" #include "wlan.h" #include "hw.h" #include "fwdesc.h" #include "fwcmd.h" #include "../regd.h" #ifdef CONFIG_CARL9170_DEBUGFS #include "debug.h" #endif /* CONFIG_CARL9170_DEBUGFS */ #define CARL9170FW_NAME "carl9170-1.fw" #define PAYLOAD_MAX (CARL9170_MAX_CMD_LEN / 4 - 1) static const u8 ar9170_qmap[__AR9170_NUM_TXQ] = { 3, 2, 1, 0 }; #define CARL9170_MAX_RX_BUFFER_SIZE 8192 enum carl9170_device_state { CARL9170_UNKNOWN_STATE, CARL9170_STOPPED, CARL9170_IDLE, CARL9170_STARTED, }; #define WME_BA_BMP_SIZE 64 #define CARL9170_TX_USER_RATE_TRIES 3 #define TID_TO_WME_AC(_tid) \ ((((_tid) == 0) || ((_tid) == 3)) ? IEEE80211_AC_BE : \ (((_tid) == 1) || ((_tid) == 2)) ? IEEE80211_AC_BK : \ (((_tid) == 4) || ((_tid) == 5)) ? IEEE80211_AC_VI : \ IEEE80211_AC_VO) #define SEQ_DIFF(_start, _seq) \ (((_start) - (_seq)) & 0x0fff) #define SEQ_PREV(_seq) \ (((_seq) - 1) & 0x0fff) #define SEQ_NEXT(_seq) \ (((_seq) + 1) & 0x0fff) #define BAW_WITHIN(_start, _bawsz, _seqno) \ ((((_seqno) - (_start)) & 0xfff) < (_bawsz)) enum carl9170_tid_state { CARL9170_TID_STATE_INVALID, CARL9170_TID_STATE_KILLED, CARL9170_TID_STATE_SHUTDOWN, CARL9170_TID_STATE_SUSPEND, CARL9170_TID_STATE_PROGRESS, CARL9170_TID_STATE_IDLE, CARL9170_TID_STATE_XMIT, }; #define CARL9170_BAW_BITS (2 * WME_BA_BMP_SIZE) #define CARL9170_BAW_SIZE (BITS_TO_LONGS(CARL9170_BAW_BITS)) #define CARL9170_BAW_LEN (DIV_ROUND_UP(CARL9170_BAW_BITS, BITS_PER_BYTE)) struct carl9170_sta_tid { /* must be the first entry! */ struct list_head list; /* temporary list for RCU unlink procedure */ struct list_head tmp_list; /* lock for the following data structures */ spinlock_t lock; unsigned int counter; enum carl9170_tid_state state; u8 tid; /* TID number ( 0 - 15 ) */ u16 max; /* max. AMPDU size */ u16 snx; /* awaiting _next_ frame */ u16 hsn; /* highest _queued_ sequence */ u16 bsn; /* base of the tx/agg bitmap */ unsigned long bitmap[CARL9170_BAW_SIZE]; /* Preaggregation reorder queue */ struct sk_buff_head queue; struct ieee80211_sta *sta; struct ieee80211_vif *vif; }; #define CARL9170_QUEUE_TIMEOUT 256 #define CARL9170_BUMP_QUEUE 1000 #define CARL9170_TX_TIMEOUT 2500 #define CARL9170_JANITOR_DELAY 128 #define CARL9170_QUEUE_STUCK_TIMEOUT 5500 #define CARL9170_STAT_WORK 30000 #define CARL9170_NUM_TX_AGG_MAX 30 /* * Tradeoff between stability/latency and speed. * * AR9170_TXQ_DEPTH is devised by dividing the amount of available * tx buffers with the size of a full ethernet frame + overhead. * * Naturally: The higher the limit, the faster the device CAN send. * However, even a slight over-commitment at the wrong time and the * hardware is doomed to send all already-queued frames at suboptimal * rates. This in turn leads to an enormous amount of unsuccessful * retries => Latency goes up, whereas the throughput goes down. CRASH! */ #define CARL9170_NUM_TX_LIMIT_HARD ((AR9170_TXQ_DEPTH * 3) / 2) #define CARL9170_NUM_TX_LIMIT_SOFT (AR9170_TXQ_DEPTH) struct carl9170_tx_queue_stats { unsigned int count; unsigned int limit; unsigned int len; }; struct carl9170_vif { unsigned int id; struct ieee80211_vif __rcu *vif; }; struct carl9170_vif_info { struct list_head list; bool active; unsigned int id; struct sk_buff *beacon; bool enable_beacon; }; #define AR9170_NUM_RX_URBS 16 #define AR9170_NUM_RX_URBS_MUL 2 #define AR9170_NUM_TX_URBS 8 #define AR9170_NUM_RX_URBS_POOL (AR9170_NUM_RX_URBS_MUL * AR9170_NUM_RX_URBS) enum carl9170_device_features { CARL9170_WPS_BUTTON = BIT(0), CARL9170_ONE_LED = BIT(1), }; #ifdef CONFIG_CARL9170_LEDS struct ar9170; struct carl9170_led { struct ar9170 *ar; struct led_classdev l; char name[32]; unsigned int toggled; bool last_state; bool registered; }; #endif /* CONFIG_CARL9170_LEDS */ enum carl9170_restart_reasons { CARL9170_RR_NO_REASON = 0, CARL9170_RR_FATAL_FIRMWARE_ERROR, CARL9170_RR_TOO_MANY_FIRMWARE_ERRORS, CARL9170_RR_WATCHDOG, CARL9170_RR_STUCK_TX, CARL9170_RR_UNRESPONSIVE_DEVICE, CARL9170_RR_COMMAND_TIMEOUT, CARL9170_RR_TOO_MANY_PHY_ERRORS, CARL9170_RR_LOST_RSP, CARL9170_RR_INVALID_RSP, CARL9170_RR_USER_REQUEST, __CARL9170_RR_LAST, }; enum carl9170_erp_modes { CARL9170_ERP_INVALID, CARL9170_ERP_AUTO, CARL9170_ERP_MAC80211, CARL9170_ERP_OFF, CARL9170_ERP_CTS, CARL9170_ERP_RTS, __CARL9170_ERP_NUM, }; struct ar9170 { struct ath_common common; struct ieee80211_hw *hw; struct mutex mutex; enum carl9170_device_state state; spinlock_t state_lock; enum carl9170_restart_reasons last_reason; bool registered; /* USB */ struct usb_device *udev; struct usb_interface *intf; struct usb_anchor rx_anch; struct usb_anchor rx_work; struct usb_anchor rx_pool; struct usb_anchor tx_wait; struct usb_anchor tx_anch; struct usb_anchor tx_cmd; struct usb_anchor tx_err; struct tasklet_struct usb_tasklet; atomic_t tx_cmd_urbs; atomic_t tx_anch_urbs; atomic_t rx_anch_urbs; atomic_t rx_work_urbs; atomic_t rx_pool_urbs; kernel_ulong_t features; bool usb_ep_cmd_is_bulk; /* firmware settings */ struct completion fw_load_wait; struct completion fw_boot_wait; struct { const struct carl9170fw_desc_head *desc; const struct firmware *fw; unsigned int offset; unsigned int address; unsigned int cmd_bufs; unsigned int api_version; unsigned int vif_num; unsigned int err_counter; unsigned int bug_counter; u32 beacon_addr; unsigned int beacon_max_len; bool rx_stream; bool tx_stream; bool rx_filter; bool hw_counters; unsigned int mem_blocks; unsigned int mem_block_size; unsigned int rx_size; unsigned int tx_seq_table; bool ba_filter; bool disable_offload_fw; } fw; /* interface configuration combinations */ struct ieee80211_iface_limit if_comb_limits[1]; struct ieee80211_iface_combination if_combs[1]; /* reset / stuck frames/queue detection */ struct work_struct restart_work; struct work_struct ping_work; unsigned int restart_counter; unsigned long queue_stop_timeout[__AR9170_NUM_TXQ]; unsigned long max_queue_stop_timeout[__AR9170_NUM_TXQ]; bool needs_full_reset; bool force_usb_reset; atomic_t pending_restarts; /* interface mode settings */ struct list_head vif_list; unsigned long vif_bitmap; unsigned int vifs; struct carl9170_vif vif_priv[AR9170_MAX_VIRTUAL_MAC]; /* beaconing */ spinlock_t beacon_lock; unsigned int global_pretbtt; unsigned int global_beacon_int; struct carl9170_vif_info __rcu *beacon_iter; unsigned int beacon_enabled; /* cryptographic engine */ u64 usedkeys; bool rx_software_decryption; bool disable_offload; /* filter settings */ u64 cur_mc_hash; u32 cur_filter; unsigned int filter_state; unsigned int rx_filter_caps; bool sniffer_enabled; /* MAC */ enum carl9170_erp_modes erp_mode; /* PHY */ struct ieee80211_channel *channel; unsigned int num_channels; int noise[4]; unsigned int chan_fail; unsigned int total_chan_fail; u8 heavy_clip; u8 ht_settings; struct { u64 active; /* usec */ u64 cca; /* usec */ u64 tx_time; /* usec */ u64 rx_total; u64 rx_overrun; } tally; struct delayed_work stat_work; struct survey_info *survey; /* power calibration data */ u8 power_5G_leg[4]; u8 power_2G_cck[4]; u8 power_2G_ofdm[4]; u8 power_5G_ht20[8]; u8 power_5G_ht40[8]; u8 power_2G_ht20[8]; u8 power_2G_ht40[8]; #ifdef CONFIG_CARL9170_LEDS /* LED */ struct delayed_work led_work; struct carl9170_led leds[AR9170_NUM_LEDS]; #endif /* CONFIG_CARL9170_LEDS */ /* qos queue settings */ spinlock_t tx_stats_lock; struct carl9170_tx_queue_stats tx_stats[__AR9170_NUM_TXQ]; struct ieee80211_tx_queue_params edcf[5]; struct completion tx_flush; /* CMD */ int cmd_seq; int readlen; u8 *readbuf; spinlock_t cmd_lock; struct completion cmd_wait; union { __le32 cmd_buf[PAYLOAD_MAX + 1]; struct carl9170_cmd cmd; struct carl9170_rsp rsp; }; /* statistics */ unsigned int tx_dropped; unsigned int tx_ack_failures; unsigned int tx_fcs_errors; unsigned int rx_dropped; /* EEPROM */ struct ar9170_eeprom eeprom; /* tx queuing */ struct sk_buff_head tx_pending[__AR9170_NUM_TXQ]; struct sk_buff_head tx_status[__AR9170_NUM_TXQ]; struct delayed_work tx_janitor; unsigned long tx_janitor_last_run; bool tx_schedule; /* tx ampdu */ struct work_struct ampdu_work; spinlock_t tx_ampdu_list_lock; struct carl9170_sta_tid __rcu *tx_ampdu_iter; struct list_head tx_ampdu_list; atomic_t tx_ampdu_upload; atomic_t tx_ampdu_scheduler; atomic_t tx_total_pending; atomic_t tx_total_queued; unsigned int tx_ampdu_list_len; int current_density; int current_factor; bool tx_ampdu_schedule; /* internal memory management */ spinlock_t mem_lock; unsigned long *mem_bitmap; atomic_t mem_free_blocks; atomic_t mem_allocs; /* rxstream mpdu merge */ struct ar9170_rx_head rx_plcp; bool rx_has_plcp; struct sk_buff *rx_failover; int rx_failover_missing; u32 ampdu_ref; /* FIFO for collecting outstanding BlockAckRequest */ struct list_head bar_list[__AR9170_NUM_TXQ]; spinlock_t bar_list_lock[__AR9170_NUM_TXQ]; #ifdef CONFIG_CARL9170_WPC struct { bool pbc_state; struct input_dev *pbc; char name[32]; char phys[32]; } wps; #endif /* CONFIG_CARL9170_WPC */ #ifdef CONFIG_CARL9170_DEBUGFS struct carl9170_debug debug; struct dentry *debug_dir; #endif /* CONFIG_CARL9170_DEBUGFS */ /* PSM */ struct work_struct ps_work; struct { unsigned int dtim_counter; unsigned long last_beacon; unsigned long last_action; unsigned long last_slept; unsigned int sleep_ms; unsigned int off_override; bool state; } ps; #ifdef CONFIG_CARL9170_HWRNG # define CARL9170_HWRNG_CACHE_SIZE CARL9170_MAX_CMD_PAYLOAD_LEN struct { struct hwrng rng; bool initialized; char name[30 + 1]; u16 cache[CARL9170_HWRNG_CACHE_SIZE / sizeof(u16)]; unsigned int cache_idx; } rng; #endif /* CONFIG_CARL9170_HWRNG */ }; enum carl9170_ps_off_override_reasons { PS_OFF_VIF = BIT(0), PS_OFF_BCN = BIT(1), }; struct carl9170_bar_list_entry { struct list_head list; struct rcu_head head; struct sk_buff *skb; }; struct carl9170_ba_stats { u8 ampdu_len; u8 ampdu_ack_len; bool clear; bool req; }; struct carl9170_sta_info { bool ht_sta; bool sleeping; atomic_t pending_frames; unsigned int ampdu_max_len; struct carl9170_sta_tid __rcu *agg[IEEE80211_NUM_TIDS]; struct carl9170_ba_stats stats[IEEE80211_NUM_TIDS]; }; struct carl9170_tx_info { unsigned long timeout; struct ar9170 *ar; struct kref ref; }; #define CHK_DEV_STATE(a, s) (((struct ar9170 *)a)->state >= (s)) #define IS_INITIALIZED(a) (CHK_DEV_STATE(a, CARL9170_STOPPED)) #define IS_ACCEPTING_CMD(a) (CHK_DEV_STATE(a, CARL9170_IDLE)) #define IS_STARTED(a) (CHK_DEV_STATE(a, CARL9170_STARTED)) static inline void __carl9170_set_state(struct ar9170 *ar, enum carl9170_device_state newstate) { ar->state = newstate; } static inline void carl9170_set_state(struct ar9170 *ar, enum carl9170_device_state newstate) { unsigned long flags; spin_lock_irqsave(&ar->state_lock, flags); __carl9170_set_state(ar, newstate); spin_unlock_irqrestore(&ar->state_lock, flags); } static inline void carl9170_set_state_when(struct ar9170 *ar, enum carl9170_device_state min, enum carl9170_device_state newstate) { unsigned long flags; spin_lock_irqsave(&ar->state_lock, flags); if (CHK_DEV_STATE(ar, min)) __carl9170_set_state(ar, newstate); spin_unlock_irqrestore(&ar->state_lock, flags); } /* exported interface */ void *carl9170_alloc(size_t priv_size); int carl9170_register(struct ar9170 *ar); void carl9170_unregister(struct ar9170 *ar); void carl9170_free(struct ar9170 *ar); void carl9170_restart(struct ar9170 *ar, const enum carl9170_restart_reasons r); void carl9170_ps_check(struct ar9170 *ar); /* USB back-end */ int carl9170_usb_open(struct ar9170 *ar); void carl9170_usb_stop(struct ar9170 *ar); void carl9170_usb_tx(struct ar9170 *ar, struct sk_buff *skb); void carl9170_usb_handle_tx_err(struct ar9170 *ar); int carl9170_exec_cmd(struct ar9170 *ar, const enum carl9170_cmd_oids, u32 plen, void *payload, u32 rlen, void *resp); int __carl9170_exec_cmd(struct ar9170 *ar, struct carl9170_cmd *cmd, const bool free_buf); int carl9170_usb_restart(struct ar9170 *ar); void carl9170_usb_reset(struct ar9170 *ar); /* MAC */ int carl9170_init_mac(struct ar9170 *ar); int carl9170_set_qos(struct ar9170 *ar); int carl9170_update_multicast(struct ar9170 *ar, const u64 mc_hast); int carl9170_mod_virtual_mac(struct ar9170 *ar, const unsigned int id, const u8 *mac); int carl9170_set_operating_mode(struct ar9170 *ar); int carl9170_set_beacon_timers(struct ar9170 *ar); int carl9170_set_dyn_sifs_ack(struct ar9170 *ar); int carl9170_set_rts_cts_rate(struct ar9170 *ar); int carl9170_set_ampdu_settings(struct ar9170 *ar); int carl9170_set_slot_time(struct ar9170 *ar); int carl9170_set_mac_rates(struct ar9170 *ar); int carl9170_set_hwretry_limit(struct ar9170 *ar, const u32 max_retry); int carl9170_upload_key(struct ar9170 *ar, const u8 id, const u8 *mac, const u8 ktype, const u8 keyidx, const u8 *keydata, const int keylen); int carl9170_disable_key(struct ar9170 *ar, const u8 id); int carl9170_set_mac_tpc(struct ar9170 *ar, struct ieee80211_channel *channel); /* RX */ void carl9170_rx(struct ar9170 *ar, void *buf, unsigned int len); void carl9170_handle_command_response(struct ar9170 *ar, void *buf, u32 len); /* TX */ void carl9170_op_tx(struct ieee80211_hw *hw, struct ieee80211_tx_control *control, struct sk_buff *skb); void carl9170_tx_janitor(struct work_struct *work); void carl9170_tx_process_status(struct ar9170 *ar, const struct carl9170_rsp *cmd); void carl9170_tx_status(struct ar9170 *ar, struct sk_buff *skb, const bool success); void carl9170_tx_callback(struct ar9170 *ar, struct sk_buff *skb); void carl9170_tx_drop(struct ar9170 *ar, struct sk_buff *skb); void carl9170_tx_scheduler(struct ar9170 *ar); void carl9170_tx_get_skb(struct sk_buff *skb); int carl9170_tx_put_skb(struct sk_buff *skb); int carl9170_update_beacon(struct ar9170 *ar, const bool submit); /* LEDs */ #ifdef CONFIG_CARL9170_LEDS int carl9170_led_register(struct ar9170 *ar); void carl9170_led_unregister(struct ar9170 *ar); #endif /* CONFIG_CARL9170_LEDS */ int carl9170_led_init(struct ar9170 *ar); int carl9170_led_set_state(struct ar9170 *ar, const u32 led_state); /* PHY / RF */ int carl9170_set_channel(struct ar9170 *ar, struct ieee80211_channel *channel, enum nl80211_channel_type bw); int carl9170_get_noisefloor(struct ar9170 *ar); /* FW */ int carl9170_parse_firmware(struct ar9170 *ar); extern struct ieee80211_rate __carl9170_ratetable[]; extern int modparam_noht; static inline struct ar9170 *carl9170_get_priv(struct carl9170_vif *carl_vif) { return container_of(carl_vif, struct ar9170, vif_priv[carl_vif->id]); } static inline struct ieee80211_hdr *carl9170_get_hdr(struct sk_buff *skb) { return (void *)((struct _carl9170_tx_superframe *) skb->data)->frame_data; } static inline u16 get_seq_h(struct ieee80211_hdr *hdr) { return le16_to_cpu(hdr->seq_ctrl) >> 4; } static inline u16 carl9170_get_seq(struct sk_buff *skb) { return get_seq_h(carl9170_get_hdr(skb)); } static inline u16 get_tid_h(struct ieee80211_hdr *hdr) { return (ieee80211_get_qos_ctl(hdr))[0] & IEEE80211_QOS_CTL_TID_MASK; } static inline u16 carl9170_get_tid(struct sk_buff *skb) { return get_tid_h(carl9170_get_hdr(skb)); } static inline struct ieee80211_vif * carl9170_get_vif(struct carl9170_vif_info *priv) { return container_of((void *)priv, struct ieee80211_vif, drv_priv); } /* Protected by ar->mutex or RCU */ static inline struct ieee80211_vif *carl9170_get_main_vif(struct ar9170 *ar) { struct carl9170_vif_info *cvif; list_for_each_entry_rcu(cvif, &ar->vif_list, list) { if (cvif->active) return carl9170_get_vif(cvif); } return NULL; } static inline bool is_main_vif(struct ar9170 *ar, struct ieee80211_vif *vif) { bool ret; rcu_read_lock(); ret = (carl9170_get_main_vif(ar) == vif); rcu_read_unlock(); return ret; } #endif /* __CARL9170_H */
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