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carl9170: mac80211 glue and command interface

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Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Christian Lamparter 2010-09-06 00:48:55 +02:00 committed by John W. Linville
parent 743e015dcb
commit fe8ee9ad80
6 changed files with 3024 additions and 0 deletions
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626
drivers/net/wireless/ath/carl9170/carl9170.h Normal file
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/*
* 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 <net/cfg80211.h>
#include <net/mac80211.h>
#include <linux/usb.h>
#ifdef CONFIG_CARL9170_LEDS
#include <linux/leds.h>
#endif /* CONFIG_CARL170_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)
enum carl9170_rf_init_mode {
CARL9170_RFI_NONE,
CARL9170_RFI_WARM,
CARL9170_RFI_COLD,
};
#define CARL9170_MAX_RX_BUFFER_SIZE 8192
enum carl9170_device_state {
CARL9170_UNKNOWN_STATE,
CARL9170_STOPPED,
CARL9170_IDLE,
CARL9170_STARTED,
};
#define CARL9170_NUM_TID 16
#define WME_BA_BMP_SIZE 64
#define CARL9170_TX_USER_RATE_TRIES 3
#define WME_AC_BE 2
#define WME_AC_BK 3
#define WME_AC_VI 1
#define WME_AC_VO 0
#define TID_TO_WME_AC(_tid) \
((((_tid) == 0) || ((_tid) == 3)) ? WME_AC_BE : \
(((_tid) == 1) || ((_tid) == 2)) ? WME_AC_BK : \
(((_tid) == 4) || ((_tid) == 5)) ? WME_AC_VI : \
WME_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;
};
#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_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 enourmous 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 *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_SLOW_SYSTEM,
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;
/* 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;
unsigned int mem_blocks;
unsigned int mem_block_size;
unsigned int rx_size;
} fw;
/* reset / stuck frames/queue detection */
struct work_struct restart_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;
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 *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;
bool sniffer_enabled;
/* MAC */
enum carl9170_erp_modes erp_mode;
/* PHY */
struct ieee80211_channel *channel;
int noise[6];
unsigned int chan_fail;
unsigned int total_chan_fail;
u8 heavy_clip;
/* 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 tx_ampdu_timeout;
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 *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;
#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;
};
enum carl9170_ps_off_override_reasons {
PS_OFF_VIF = BIT(0),
PS_OFF_BCN = BIT(1),
PS_OFF_5GHZ = BIT(2),
};
struct carl9170_ba_stats {
u8 ampdu_len;
u8 ampdu_ack_len;
bool clear;
};
struct carl9170_sta_info {
bool ht_sta;
unsigned int ampdu_max_len;
struct carl9170_sta_tid *agg[CARL9170_NUM_TID];
struct carl9170_ba_stats stats[CARL9170_NUM_TID];
};
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_update_beacon(struct ar9170 *ar, const bool submit);
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);
/* 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 */
int carl9170_op_tx(struct ieee80211_hw *hw, 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);
/* 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, enum carl9170_rf_init_mode rfi);
int carl9170_get_noisefloor(struct ar9170 *ar);
/* FW */
int carl9170_parse_firmware(struct ar9170 *ar);
int carl9170_fw_fix_eeprom(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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drivers/net/wireless/ath/carl9170/cmd.c Normal file
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/*
* Atheros CARL9170 driver
*
* Basic HW register/memory/command access functions
*
* Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
*
* 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.
*/
#include "carl9170.h"
#include "cmd.h"
int carl9170_write_reg(struct ar9170 *ar, const u32 reg, const u32 val)
{
__le32 buf[2] = {
cpu_to_le32(reg),
cpu_to_le32(val),
};
int err;
err = carl9170_exec_cmd(ar, CARL9170_CMD_WREG, sizeof(buf),
(u8 *) buf, 0, NULL);
if (err) {
if (net_ratelimit()) {
wiphy_err(ar->hw->wiphy, "writing reg %#x "
"(val %#x) failed (%d)\n", reg, val, err);
}
}
return err;
}
int carl9170_read_mreg(struct ar9170 *ar, const int nregs,
const u32 *regs, u32 *out)
{
int i, err;
__le32 *offs, *res;
/* abuse "out" for the register offsets, must be same length */
offs = (__le32 *)out;
for (i = 0; i < nregs; i++)
offs[i] = cpu_to_le32(regs[i]);
/* also use the same buffer for the input */
res = (__le32 *)out;
err = carl9170_exec_cmd(ar, CARL9170_CMD_RREG,
4 * nregs, (u8 *)offs,
4 * nregs, (u8 *)res);
if (err) {
if (net_ratelimit()) {
wiphy_err(ar->hw->wiphy, "reading regs failed (%d)\n",
err);
}
return err;
}
/* convert result to cpu endian */
for (i = 0; i < nregs; i++)
out[i] = le32_to_cpu(res[i]);
return 0;
}
int carl9170_read_reg(struct ar9170 *ar, u32 reg, u32 *val)
{
return carl9170_read_mreg(ar, 1, &reg, val);
}
int carl9170_echo_test(struct ar9170 *ar, const u32 v)
{
u32 echores;
int err;
err = carl9170_exec_cmd(ar, CARL9170_CMD_ECHO,
4, (u8 *)&v,
4, (u8 *)&echores);
if (err)
return err;
if (v != echores) {
wiphy_info(ar->hw->wiphy, "wrong echo %x != %x", v, echores);
return -EINVAL;
}
return 0;
}
struct carl9170_cmd *carl9170_cmd_buf(struct ar9170 *ar,
const enum carl9170_cmd_oids cmd, const unsigned int len)
{
struct carl9170_cmd *tmp;
tmp = kzalloc(sizeof(struct carl9170_cmd_head) + len, GFP_ATOMIC);
if (tmp) {
tmp->hdr.cmd = cmd;
tmp->hdr.len = len;
}
return tmp;
}
int carl9170_reboot(struct ar9170 *ar)
{
struct carl9170_cmd *cmd;
int err;
cmd = carl9170_cmd_buf(ar, CARL9170_CMD_REBOOT_ASYNC, 0);
if (!cmd)
return -ENOMEM;
err = __carl9170_exec_cmd(ar, (struct carl9170_cmd *)cmd, true);
return err;
}
int carl9170_mac_reset(struct ar9170 *ar)
{
return carl9170_exec_cmd(ar, CARL9170_CMD_SWRST,
0, NULL, 0, NULL);
}
int carl9170_bcn_ctrl(struct ar9170 *ar, const unsigned int vif_id,
const u32 mode, const u32 addr, const u32 len)
{
struct carl9170_cmd *cmd;
cmd = carl9170_cmd_buf(ar, CARL9170_CMD_BCN_CTRL_ASYNC,
sizeof(struct carl9170_bcn_ctrl_cmd));
if (!cmd)
return -ENOMEM;
cmd->bcn_ctrl.vif_id = cpu_to_le32(vif_id);
cmd->bcn_ctrl.mode = cpu_to_le32(mode);
cmd->bcn_ctrl.bcn_addr = cpu_to_le32(addr);
cmd->bcn_ctrl.bcn_len = cpu_to_le32(len);
return __carl9170_exec_cmd(ar, cmd, true);
}
int carl9170_powersave(struct ar9170 *ar, const bool ps)
{
struct carl9170_cmd *cmd;
u32 state;
cmd = carl9170_cmd_buf(ar, CARL9170_CMD_PSM_ASYNC,
sizeof(struct carl9170_psm));
if (!cmd)
return -ENOMEM;
if (ps) {
/* Sleep until next TBTT */
state = CARL9170_PSM_SLEEP | 1;
} else {
/* wake up immediately */
state = 1;
}
cmd->psm.state = cpu_to_le32(state);
return __carl9170_exec_cmd(ar, cmd, true);
}

158
drivers/net/wireless/ath/carl9170/cmd.h Normal file
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/*
* Atheros CARL9170 driver
*
* Basic HW register/memory/command access functions
*
* Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
* Copyright 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 __CMD_H
#define __CMD_H
#include "carl9170.h"
/* basic HW access */
int carl9170_write_reg(struct ar9170 *ar, const u32 reg, const u32 val);
int carl9170_read_reg(struct ar9170 *ar, const u32 reg, u32 *val);
int carl9170_read_mreg(struct ar9170 *ar, const int nregs,
const u32 *regs, u32 *out);
int carl9170_echo_test(struct ar9170 *ar, u32 v);
int carl9170_reboot(struct ar9170 *ar);
int carl9170_mac_reset(struct ar9170 *ar);
int carl9170_powersave(struct ar9170 *ar, const bool power_on);
int carl9170_bcn_ctrl(struct ar9170 *ar, const unsigned int vif_id,
const u32 mode, const u32 addr, const u32 len);
static inline int carl9170_flush_cab(struct ar9170 *ar,
const unsigned int vif_id)
{
return carl9170_bcn_ctrl(ar, vif_id, CARL9170_BCN_CTRL_DRAIN, 0, 0);
}
struct carl9170_cmd *carl9170_cmd_buf(struct ar9170 *ar,
const enum carl9170_cmd_oids cmd, const unsigned int len);
/*
* Macros to facilitate writing multiple registers in a single
* write-combining USB command. Note that when the first group
* fails the whole thing will fail without any others attempted,
* but you won't know which write in the group failed.
*/
#define carl9170_regwrite_begin(ar) \
do { \
int __nreg = 0, __err = 0; \
struct ar9170 *__ar = ar;
#define carl9170_regwrite(r, v) do { \
__ar->cmd_buf[2 * __nreg + 1] = cpu_to_le32(r); \
__ar->cmd_buf[2 * __nreg + 2] = cpu_to_le32(v); \
__nreg++; \
if ((__nreg >= PAYLOAD_MAX/2)) { \
if (IS_ACCEPTING_CMD(__ar)) \
__err = carl9170_exec_cmd(__ar, \
CARL9170_CMD_WREG, 8 * __nreg, \
(u8 *) &__ar->cmd_buf[1], 0, NULL); \
else \
goto __regwrite_out; \
\
__nreg = 0; \
if (__err) \
goto __regwrite_out; \
} \
} while (0)
#define carl9170_regwrite_finish() \
__regwrite_out : \
if (__err == 0 && __nreg) { \
if (IS_ACCEPTING_CMD(__ar)) \
__err = carl9170_exec_cmd(__ar, \
CARL9170_CMD_WREG, 8 * __nreg, \
(u8 *) &__ar->cmd_buf[1], 0, NULL); \
__nreg = 0; \
}
#define carl9170_regwrite_result() \
__err; \
} while (0);
#define carl9170_async_get_buf() \
do { \
__cmd = carl9170_cmd_buf(__carl, CARL9170_CMD_WREG_ASYNC, \
CARL9170_MAX_CMD_PAYLOAD_LEN); \
if (__cmd == NULL) { \
__err = -ENOMEM; \
goto __async_regwrite_out; \
} \
} while (0);
#define carl9170_async_regwrite_begin(carl) \
do { \
int __nreg = 0, __err = 0; \
struct ar9170 *__carl = carl; \
struct carl9170_cmd *__cmd; \
carl9170_async_get_buf(); \
#define carl9170_async_regwrite(r, v) do { \
__cmd->wreg.regs[__nreg].addr = cpu_to_le32(r); \
__cmd->wreg.regs[__nreg].val = cpu_to_le32(v); \
__nreg++; \
if ((__nreg >= PAYLOAD_MAX/2)) { \
if (IS_ACCEPTING_CMD(__carl)) { \
__cmd->hdr.len = 8 * __nreg; \
__err = __carl9170_exec_cmd(__carl, __cmd, true);\
__cmd = NULL; \
carl9170_async_get_buf(); \
} else { \
goto __async_regwrite_out; \
} \
__nreg = 0; \
if (__err) \
goto __async_regwrite_out; \
} \
} while (0)
#define carl9170_async_regwrite_finish() \
__async_regwrite_out : \
if (__err == 0 && __nreg) { \
__cmd->hdr.len = 8 * __nreg; \
if (IS_ACCEPTING_CMD(__carl)) \
__err = __carl9170_exec_cmd(__carl, __cmd, true);\
__nreg = 0; \
}
#define carl9170_async_regwrite_result() \
__err; \
} while (0);
#endif /* __CMD_H */

190
drivers/net/wireless/ath/carl9170/led.c Normal file
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@ -0,0 +1,190 @@
/*
* Atheros CARL9170 driver
*
* LED handling
*
* Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
* Copyright 2009, 2010, Christian Lamparer <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.
*/
#include "carl9170.h"
#include "cmd.h"
int carl9170_led_set_state(struct ar9170 *ar, const u32 led_state)
{
return carl9170_write_reg(ar, AR9170_GPIO_REG_PORT_DATA, led_state);
}
int carl9170_led_init(struct ar9170 *ar)
{
int err;
/* disable LEDs */
/* GPIO [0/1 mode: output, 2/3: input] */
err = carl9170_write_reg(ar, AR9170_GPIO_REG_PORT_TYPE, 3);
if (err)
goto out;
/* GPIO 0/1 value: off */
err = carl9170_led_set_state(ar, 0);
out:
return err;
}
#ifdef CONFIG_CARL9170_LEDS
static void carl9170_led_update(struct work_struct *work)
{
struct ar9170 *ar = container_of(work, struct ar9170, led_work.work);
int i, tmp = 300, blink_delay = 1000;
u32 led_val = 0;
bool rerun = false;
if (!IS_ACCEPTING_CMD(ar))
return;
mutex_lock(&ar->mutex);
for (i = 0; i < AR9170_NUM_LEDS; i++) {
if (ar->leds[i].registered) {
if (ar->leds[i].last_state ||
ar->leds[i].toggled) {
if (ar->leds[i].toggled)
tmp = 70 + 200 / (ar->leds[i].toggled);
if (tmp < blink_delay)
blink_delay = tmp;
led_val |= 1 << i;
ar->leds[i].toggled = 0;
rerun = true;
}
}
}
carl9170_led_set_state(ar, led_val);
mutex_unlock(&ar->mutex);
if (!rerun)
return;
ieee80211_queue_delayed_work(ar->hw,
&ar->led_work,
msecs_to_jiffies(blink_delay));
}
static void carl9170_led_set_brightness(struct led_classdev *led,
enum led_brightness brightness)
{
struct carl9170_led *arl = container_of(led, struct carl9170_led, l);
struct ar9170 *ar = arl->ar;
if (!arl->registered)
return;
if (arl->last_state != !!brightness) {
arl->toggled++;
arl->last_state = !!brightness;
}
if (likely(IS_ACCEPTING_CMD(ar) && arl->toggled))
ieee80211_queue_delayed_work(ar->hw, &ar->led_work, HZ/10);
}
static int carl9170_led_register_led(struct ar9170 *ar, int i, char *name,
char *trigger)
{
int err;
snprintf(ar->leds[i].name, sizeof(ar->leds[i].name),
"carl9170-%s::%s", wiphy_name(ar->hw->wiphy), name);
ar->leds[i].ar = ar;
ar->leds[i].l.name = ar->leds[i].name;
ar->leds[i].l.brightness_set = carl9170_led_set_brightness;
ar->leds[i].l.brightness = 0;
ar->leds[i].l.default_trigger = trigger;
err = led_classdev_register(wiphy_dev(ar->hw->wiphy),
&ar->leds[i].l);
if (err) {
wiphy_err(ar->hw->wiphy, "failed to register %s LED (%d).\n",
ar->leds[i].name, err);
} else {
ar->leds[i].registered = true;
}
return err;
}
void carl9170_led_unregister(struct ar9170 *ar)
{
int i;
for (i = 0; i < AR9170_NUM_LEDS; i++)
if (ar->leds[i].registered) {
led_classdev_unregister(&ar->leds[i].l);
ar->leds[i].registered = false;
ar->leds[i].toggled = 0;
}
cancel_delayed_work_sync(&ar->led_work);
}
int carl9170_led_register(struct ar9170 *ar)
{
int err;
INIT_DELAYED_WORK(&ar->led_work, carl9170_led_update);
err = carl9170_led_register_led(ar, 0, "tx",
ieee80211_get_tx_led_name(ar->hw));
if (err)
goto fail;
if (ar->features & CARL9170_ONE_LED)
return 0;
err = carl9170_led_register_led(ar, 1, "assoc",
ieee80211_get_assoc_led_name(ar->hw));
if (err)
goto fail;
return 0;
fail:
carl9170_led_unregister(ar);
return err;
}
#endif /* CONFIG_CARL9170_LEDS */

1855
drivers/net/wireless/ath/carl9170/main.c Normal file
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File diff suppressed because it is too large Load Diff

7
drivers/net/wireless/ath/carl9170/version.h Normal file
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@ -0,0 +1,7 @@
#ifndef __CARL9170_SHARED_VERSION_H
#define __CARL9170_SHARED_VERSION_H
#define CARL9170FW_VERSION_YEAR 10
#define CARL9170FW_VERSION_MONTH 8
#define CARL9170FW_VERSION_DAY 30
#define CARL9170FW_VERSION_GIT "1.8.8.1"
#endif /* __CARL9170_SHARED_VERSION_H */