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* Add support for beamforming

Browse Source 
* Enable stuck queue detection for iwlmvm
 * A few fixes for EBS scan
 * Fixes for various failure paths
 * Improvements for TDLS Offchannel
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Merge tag 'iwlwifi-next-for-kalle-2015-02-03' of https://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-next

* Add support for beamforming
* Enable stuck queue detection for iwlmvm
* A few fixes for EBS scan
* Fixes for various failure paths
* Improvements for TDLS Offchannel
This commit is contained in:
Kalle Valo 2015-02-06 08:57:37 +02:00
commit 8cd4cbf249
26 changed files with 503 additions and 176 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/net/wireless/iwlwifi/dvm/main.c
View File

@ -1228,11 +1228,8 @@ static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans,
trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
trans_cfg.rx_buf_size_8k = iwlwifi_mod_params.amsdu_size_8K;
if (!iwlwifi_mod_params.wd_disable)
trans_cfg.queue_watchdog_timeout =
priv->cfg->base_params->wd_timeout;
else
trans_cfg.queue_watchdog_timeout = IWL_WATCHDOG_DISABLED;
trans_cfg.cmd_q_wdg_timeout = IWL_WATCHDOG_DISABLED;
trans_cfg.command_names = iwl_dvm_cmd_strings;
trans_cfg.cmd_fifo = IWLAGN_CMD_FIFO_NUM;

2
drivers/net/wireless/iwlwifi/dvm/tx.c
View File

@ -715,7 +715,7 @@ int iwlagn_tx_agg_oper(struct iwl_priv *priv, struct ieee80211_vif *vif,
fifo = ctx->ac_to_fifo[tid_to_ac[tid]];
iwl_trans_txq_enable(priv->trans, q, fifo, sta_priv->sta_id, tid,
buf_size, ssn);
buf_size, ssn, 0);
/*
* If the limit is 0, then it wasn't initialised yet,

2
drivers/net/wireless/iwlwifi/dvm/ucode.c
View File

@ -267,7 +267,7 @@ static int iwl_alive_notify(struct iwl_priv *priv)
for (i = 0; i < n_queues; i++)
if (queue_to_txf[i] != IWL_TX_FIFO_UNUSED)
iwl_trans_ac_txq_enable(priv->trans, i,
queue_to_txf[i]);
queue_to_txf[i], 0);
priv->passive_no_rx = false;
priv->transport_queue_stop = 0;

2
drivers/net/wireless/iwlwifi/iwl-config.h
View File

@ -126,7 +126,7 @@ enum iwl_led_mode {
/* TX queue watchdog timeouts in mSecs */
#define IWL_WATCHDOG_DISABLED 0
#define IWL_DEF_WD_TIMEOUT 2000
#define IWL_DEF_WD_TIMEOUT 2500
#define IWL_LONG_WD_TIMEOUT 10000
#define IWL_MAX_WD_TIMEOUT 120000

5
drivers/net/wireless/iwlwifi/iwl-drv.c
View File

@ -1367,7 +1367,6 @@ struct iwl_mod_params iwlwifi_mod_params = {
.restart_fw = true,
.bt_coex_active = true,
.power_level = IWL_POWER_INDEX_1,
.wd_disable = true,
.d0i3_disable = true,
#ifndef CONFIG_IWLWIFI_UAPSD
.uapsd_disable = true,
@ -1478,10 +1477,6 @@ module_param_named(antenna_coupling, iwlwifi_mod_params.ant_coupling,
MODULE_PARM_DESC(antenna_coupling,
"specify antenna coupling in dB (default: 0 dB)");
module_param_named(wd_disable, iwlwifi_mod_params.wd_disable, int, S_IRUGO);
MODULE_PARM_DESC(wd_disable,
"Disable stuck queue watchdog timer 0=system default, 1=disable (default: 1)");
module_param_named(nvm_file, iwlwifi_mod_params.nvm_file, charp, S_IRUGO);
MODULE_PARM_DESC(nvm_file, "NVM file name");

2
drivers/net/wireless/iwlwifi/iwl-fw-file.h
View File

@ -270,6 +270,7 @@ enum iwl_ucode_tlv_api {
* @IWL_UCODE_TLV_CAPA_D0I3_SUPPORT: supports D0i3
* @IWL_UCODE_TLV_CAPA_LAR_SUPPORT: supports Location Aware Regulatory
* @IWL_UCODE_TLV_CAPA_UMAC_SCAN: supports UMAC scan.
* @IWL_UCODE_TLV_CAPA_BEAMFORMER: supports Beamformer
* @IWL_UCODE_TLV_CAPA_TDLS_SUPPORT: support basic TDLS functionality
* @IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT: supports insertion of current
* tx power value into TPC Report action frame and Link Measurement Report
@ -288,6 +289,7 @@ enum iwl_ucode_tlv_capa {
IWL_UCODE_TLV_CAPA_D0I3_SUPPORT = BIT(0),
IWL_UCODE_TLV_CAPA_LAR_SUPPORT = BIT(1),
IWL_UCODE_TLV_CAPA_UMAC_SCAN = BIT(2),
IWL_UCODE_TLV_CAPA_BEAMFORMER = BIT(3),
IWL_UCODE_TLV_CAPA_TDLS_SUPPORT = BIT(6),
IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT = BIT(8),
IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT = BIT(9),

2
drivers/net/wireless/iwlwifi/iwl-modparams.h
View File

@ -96,7 +96,6 @@ enum iwl_disable_11n {
* use IWL_[DIS,EN]ABLE_HT_* constants
* @amsdu_size_8K: enable 8K amsdu size, default = 0
* @restart_fw: restart firmware, default = 1
* @wd_disable: disable stuck queue check, default = 1
* @bt_coex_active: enable bt coex, default = true
* @led_mode: system default, default = 0
* @power_save: enable power save, default = false
@ -111,7 +110,6 @@ struct iwl_mod_params {
unsigned int disable_11n;
int amsdu_size_8K;
bool restart_fw;
int wd_disable;
bool bt_coex_active;
int led_mode;
bool power_save;

26
drivers/net/wireless/iwlwifi/iwl-prph.h
View File

@ -252,6 +252,7 @@
#define SCD_QUEUE_CTX_REG2_WIN_SIZE_MSK (0x0000007F)
#define SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS (16)
#define SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK (0x007F0000)
#define SCD_GP_CTRL_ENABLE_31_QUEUES BIT(0)
/* Context Data */
#define SCD_CONTEXT_MEM_LOWER_BOUND (SCD_MEM_LOWER_BOUND + 0x600)
@ -285,32 +286,9 @@
#define SCD_CHAINEXT_EN (SCD_BASE + 0x244)
#define SCD_AGGR_SEL (SCD_BASE + 0x248)
#define SCD_INTERRUPT_MASK (SCD_BASE + 0x108)
#define SCD_GP_CTRL (SCD_BASE + 0x1a8)
#define SCD_EN_CTRL (SCD_BASE + 0x254)
static inline unsigned int SCD_QUEUE_WRPTR(unsigned int chnl)
{
if (chnl < 20)
return SCD_BASE + 0x18 + chnl * 4;
WARN_ON_ONCE(chnl >= 32);
return SCD_BASE + 0x284 + (chnl - 20) * 4;
}
static inline unsigned int SCD_QUEUE_RDPTR(unsigned int chnl)
{
if (chnl < 20)
return SCD_BASE + 0x68 + chnl * 4;
WARN_ON_ONCE(chnl >= 32);
return SCD_BASE + 0x2B4 + (chnl - 20) * 4;
}
static inline unsigned int SCD_QUEUE_STATUS_BITS(unsigned int chnl)
{
if (chnl < 20)
return SCD_BASE + 0x10c + chnl * 4;
WARN_ON_ONCE(chnl >= 32);
return SCD_BASE + 0x384 + (chnl - 20) * 4;
}
/*********************** END TX SCHEDULER *************************************/
/* Oscillator clock */

41
drivers/net/wireless/iwlwifi/iwl-scd.h
View File

@ -69,14 +69,6 @@
#include "iwl-prph.h"
static inline void iwl_scd_txq_set_inactive(struct iwl_trans *trans,
u16 txq_id)
{
iwl_write_prph(trans, SCD_QUEUE_STATUS_BITS(txq_id),
(0 << SCD_QUEUE_STTS_REG_POS_ACTIVE)|
(1 << SCD_QUEUE_STTS_REG_POS_SCD_ACT_EN));
}
static inline void iwl_scd_txq_set_chain(struct iwl_trans *trans,
u16 txq_id)
{
@ -115,4 +107,37 @@ static inline void iwl_scd_enable_set_active(struct iwl_trans *trans,
{
iwl_write_prph(trans, SCD_EN_CTRL, value);
}
static inline unsigned int SCD_QUEUE_WRPTR(unsigned int chnl)
{
if (chnl < 20)
return SCD_BASE + 0x18 + chnl * 4;
WARN_ON_ONCE(chnl >= 32);
return SCD_BASE + 0x284 + (chnl - 20) * 4;
}
static inline unsigned int SCD_QUEUE_RDPTR(unsigned int chnl)
{
if (chnl < 20)
return SCD_BASE + 0x68 + chnl * 4;
WARN_ON_ONCE(chnl >= 32);
return SCD_BASE + 0x2B4 + chnl * 4;
}
static inline unsigned int SCD_QUEUE_STATUS_BITS(unsigned int chnl)
{
if (chnl < 20)
return SCD_BASE + 0x10c + chnl * 4;
WARN_ON_ONCE(chnl >= 32);
return SCD_BASE + 0x334 + chnl * 4;
}
static inline void iwl_scd_txq_set_inactive(struct iwl_trans *trans,
u16 txq_id)
{
iwl_write_prph(trans, SCD_QUEUE_STATUS_BITS(txq_id),
(0 << SCD_QUEUE_STTS_REG_POS_ACTIVE)|
(1 << SCD_QUEUE_STTS_REG_POS_SCD_ACT_EN));
}
#endif

29
drivers/net/wireless/iwlwifi/iwl-trans.h
View File

@ -368,6 +368,7 @@ enum iwl_trans_status {
* @cmd_queue: the index of the command queue.
* Must be set before start_fw.
* @cmd_fifo: the fifo for host commands
* @cmd_q_wdg_timeout: the timeout of the watchdog timer for the command queue.
* @no_reclaim_cmds: Some devices erroneously don't set the
* SEQ_RX_FRAME bit on some notifications, this is the
* list of such notifications to filter. Max length is
@ -378,8 +379,6 @@ enum iwl_trans_status {
* @bc_table_dword: set to true if the BC table expects the byte count to be
* in DWORD (as opposed to bytes)
* @scd_set_active: should the transport configure the SCD for HCMD queue
* @queue_watchdog_timeout: time (in ms) after which queues
* are considered stuck and will trigger device restart
* @command_names: array of command names, must be 256 entries
* (one for each command); for debugging only
* @sdio_adma_addr: the default address to set for the ADMA in SDIO mode until
@ -390,13 +389,13 @@ struct iwl_trans_config {
u8 cmd_queue;
u8 cmd_fifo;
unsigned int cmd_q_wdg_timeout;
const u8 *no_reclaim_cmds;
unsigned int n_no_reclaim_cmds;
bool rx_buf_size_8k;
bool bc_table_dword;
bool scd_set_active;
unsigned int queue_watchdog_timeout;
const char *const *command_names;
u32 sdio_adma_addr;
@ -511,7 +510,8 @@ struct iwl_trans_ops {
struct sk_buff_head *skbs);
void (*txq_enable)(struct iwl_trans *trans, int queue, u16 ssn,
const struct iwl_trans_txq_scd_cfg *cfg);
const struct iwl_trans_txq_scd_cfg *cfg,
unsigned int queue_wdg_timeout);
void (*txq_disable)(struct iwl_trans *trans, int queue,
bool configure_scd);
@ -829,19 +829,21 @@ static inline void iwl_trans_txq_disable(struct iwl_trans *trans, int queue,
static inline void
iwl_trans_txq_enable_cfg(struct iwl_trans *trans, int queue, u16 ssn,
const struct iwl_trans_txq_scd_cfg *cfg)
const struct iwl_trans_txq_scd_cfg *cfg,
unsigned int queue_wdg_timeout)
{
might_sleep();
if (unlikely((trans->state != IWL_TRANS_FW_ALIVE)))
IWL_ERR(trans, "%s bad state = %d\n", __func__, trans->state);
trans->ops->txq_enable(trans, queue, ssn, cfg);
trans->ops->txq_enable(trans, queue, ssn, cfg, queue_wdg_timeout);
}
static inline void iwl_trans_txq_enable(struct iwl_trans *trans, int queue,
int fifo, int sta_id, int tid,
int frame_limit, u16 ssn)
int frame_limit, u16 ssn,
unsigned int queue_wdg_timeout)
{
struct iwl_trans_txq_scd_cfg cfg = {
.fifo = fifo,
@ -851,11 +853,12 @@ static inline void iwl_trans_txq_enable(struct iwl_trans *trans, int queue,
.aggregate = sta_id >= 0,
};
iwl_trans_txq_enable_cfg(trans, queue, ssn, &cfg);
iwl_trans_txq_enable_cfg(trans, queue, ssn, &cfg, queue_wdg_timeout);
}
static inline void iwl_trans_ac_txq_enable(struct iwl_trans *trans, int queue,
int fifo)
static inline
void iwl_trans_ac_txq_enable(struct iwl_trans *trans, int queue, int fifo,
unsigned int queue_wdg_timeout)
{
struct iwl_trans_txq_scd_cfg cfg = {
.fifo = fifo,
@ -865,16 +868,16 @@ static inline void iwl_trans_ac_txq_enable(struct iwl_trans *trans, int queue,
.aggregate = false,
};
iwl_trans_txq_enable_cfg(trans, queue, 0, &cfg);
iwl_trans_txq_enable_cfg(trans, queue, 0, &cfg, queue_wdg_timeout);
}
static inline int iwl_trans_wait_tx_queue_empty(struct iwl_trans *trans,
u32 txq_bm)
u32 txqs)
{
if (unlikely(trans->state != IWL_TRANS_FW_ALIVE))
IWL_ERR(trans, "%s bad state = %d\n", __func__, trans->state);
return trans->ops->wait_tx_queue_empty(trans, txq_bm);
return trans->ops->wait_tx_queue_empty(trans, txqs);
}
static inline int iwl_trans_dbgfs_register(struct iwl_trans *trans,

2
drivers/net/wireless/iwlwifi/mvm/constants.h
View File

@ -99,7 +99,7 @@
#define IWL_MVM_BT_COEX_ANTENNA_COUPLING_THRS 30
#define IWL_MVM_FW_MCAST_FILTER_PASS_ALL 0
#define IWL_MVM_FW_BCAST_FILTER_PASS_ALL 0
#define IWL_MVM_QUOTA_THRESHOLD 8
#define IWL_MVM_QUOTA_THRESHOLD 4
#define IWL_MVM_RS_RSSI_BASED_INIT_RATE 0
#define IWL_MVM_RS_DISABLE_P2P_MIMO 0
#define IWL_MVM_RS_NUM_TRY_BEFORE_ANT_TOGGLE 1

43
drivers/net/wireless/iwlwifi/mvm/fw-api-rs.h
View File

@ -308,16 +308,41 @@ enum {
#define LQ_FLAG_DYNAMIC_BW_POS 6
#define LQ_FLAG_DYNAMIC_BW_MSK (1 << LQ_FLAG_DYNAMIC_BW_POS)
/* Single Stream Parameters
* SS_STBC/BFER_ALLOWED - Controls whether STBC or Beamformer (BFER) is allowed
* ucode will make a smart decision between SISO/STBC/BFER
* SS_PARAMS_VALID - if not set ignore the ss_params field.
/* Single Stream Tx Parameters (lq_cmd->ss_params)
* Flags to control a smart FW decision about whether BFER/STBC/SISO will be
* used for single stream Tx.
*/
enum {
RS_SS_STBC_ALLOWED = BIT(0),
RS_SS_BFER_ALLOWED = BIT(1),
RS_SS_PARAMS_VALID = BIT(31),
};
/* Bit 0-1: Max STBC streams allowed. Can be 0-3.
* (0) - No STBC allowed
* (1) - 2x1 STBC allowed (HT/VHT)
* (2) - 4x2 STBC allowed (HT/VHT)
* (3) - 3x2 STBC allowed (HT only)
* All our chips are at most 2 antennas so only (1) is valid for now.
*/
#define LQ_SS_STBC_ALLOWED_POS 0
#define LQ_SS_STBC_ALLOWED_MSK (3 << LQ_SS_STBC_ALLOWED_MSK)
/* 2x1 STBC is allowed */
#define LQ_SS_STBC_1SS_ALLOWED (1 << LQ_SS_STBC_ALLOWED_POS)
/* Bit 2: Beamformer (VHT only) is allowed */
#define LQ_SS_BFER_ALLOWED_POS 2
#define LQ_SS_BFER_ALLOWED (1 << LQ_SS_BFER_ALLOWED_POS)
/* Bit 3: Force BFER or STBC for testing
* If this is set:
* If BFER is allowed then force the ucode to choose BFER else
* If STBC is allowed then force the ucode to choose STBC over SISO
*/
#define LQ_SS_FORCE_POS 3
#define LQ_SS_FORCE (1 << LQ_SS_FORCE_POS)
/* Bit 31: ss_params field is valid. Used for FW backward compatibility
* with other drivers which don't support the ss_params API yet
*/
#define LQ_SS_PARAMS_VALID_POS 31
#define LQ_SS_PARAMS_VALID (1 << LQ_SS_PARAMS_VALID_POS)
/**
* struct iwl_lq_cmd - link quality command

3
drivers/net/wireless/iwlwifi/mvm/fw.c
View File

@ -575,7 +575,8 @@ int iwl_mvm_up(struct iwl_mvm *mvm)
goto error;
}
iwl_mvm_get_shared_mem_conf(mvm);
if (IWL_UCODE_API(mvm->fw->ucode_ver) >= 10)
iwl_mvm_get_shared_mem_conf(mvm);
ret = iwl_mvm_sf_update(mvm, NULL, false);
if (ret)

10
drivers/net/wireless/iwlwifi/mvm/mac-ctxt.c
View File

@ -462,6 +462,9 @@ exit_fail:
int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
{
unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ?
mvm->cfg->base_params->wd_timeout :
IWL_WATCHDOG_DISABLED;
u32 ac;
int ret;
@ -474,16 +477,17 @@ int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
switch (vif->type) {
case NL80211_IFTYPE_P2P_DEVICE:
iwl_mvm_enable_ac_txq(mvm, IWL_MVM_OFFCHANNEL_QUEUE,
IWL_MVM_TX_FIFO_VO);
IWL_MVM_TX_FIFO_VO, wdg_timeout);
break;
case NL80211_IFTYPE_AP:
iwl_mvm_enable_ac_txq(mvm, vif->cab_queue,
IWL_MVM_TX_FIFO_MCAST);
IWL_MVM_TX_FIFO_MCAST, wdg_timeout);
/* fall through */
default:
for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
iwl_mvm_enable_ac_txq(mvm, vif->hw_queue[ac],
iwl_mvm_ac_to_tx_fifo[ac]);
iwl_mvm_ac_to_tx_fifo[ac],
wdg_timeout);
break;
}

12
drivers/net/wireless/iwlwifi/mvm/mac80211.c
View File

@ -401,10 +401,15 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
&mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels) {
hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
&mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_BEAMFORMER)
hw->wiphy->bands[IEEE80211_BAND_5GHZ]->vht_cap.cap |=
IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
}
hw->wiphy->hw_version = mvm->trans->hw_id;
if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
@ -707,9 +712,6 @@ static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
mvmvif->uploaded = false;
mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
/* does this make sense at all? */
mvmvif->color++;
spin_lock_bh(&mvm->time_event_lock);
iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
spin_unlock_bh(&mvm->time_event_lock);
@ -1353,7 +1355,7 @@ static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
ret = iwl_mvm_power_update_mac(mvm);
if (ret)
goto out_release;
goto out_remove_mac;
/* beacon filtering */
ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);

23
drivers/net/wireless/iwlwifi/mvm/mvm.h
View File

@ -119,11 +119,13 @@ extern const struct ieee80211_ops iwl_mvm_hw_ops;
* We will register to mac80211 to have testmode working. The NIC must not
* be up'ed after the INIT fw asserted. This is useful to be able to use
* proprietary tools over testmode to debug the INIT fw.
* @tfd_q_hang_detect: enabled the detection of hung transmit queues
* @power_scheme: CAM(Continuous Active Mode)-1, BPS(Balanced Power
* Save)-2(default), LP(Low Power)-3
*/
struct iwl_mvm_mod_params {
bool init_dbg;
bool tfd_q_hang_detect;
int power_scheme;
};
extern struct iwl_mvm_mod_params iwlmvm_mod_params;
@ -532,6 +534,7 @@ enum {
enum iwl_mvm_tdls_cs_state {
IWL_MVM_TDLS_SW_IDLE = 0,
IWL_MVM_TDLS_SW_REQ_SENT,
IWL_MVM_TDLS_SW_RESP_RCVD,
IWL_MVM_TDLS_SW_REQ_RCVD,
IWL_MVM_TDLS_SW_ACTIVE,
};
@ -797,6 +800,9 @@ struct iwl_mvm {
struct cfg80211_chan_def chandef;
struct sk_buff *skb; /* ch sw template */
u32 ch_sw_tm_ie;
/* timestamp of last ch-sw request sent (GP2 time) */
u32 sent_timestamp;
} peer;
} tdls_cs;
@ -874,7 +880,7 @@ static inline bool iwl_mvm_is_d0i3_supported(struct iwl_mvm *mvm)
static inline bool iwl_mvm_is_scd_cfg_supported(struct iwl_mvm *mvm)
{
return mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_API_SCD_CFG;
return mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_SCD_CFG;
}
extern const u8 iwl_mvm_ac_to_tx_fifo[];
@ -1312,11 +1318,13 @@ static inline bool iwl_mvm_vif_low_latency(struct iwl_mvm_vif *mvmvif)
/* hw scheduler queue config */
void iwl_mvm_enable_txq(struct iwl_mvm *mvm, int queue, u16 ssn,
const struct iwl_trans_txq_scd_cfg *cfg);
const struct iwl_trans_txq_scd_cfg *cfg,
unsigned int wdg_timeout);
void iwl_mvm_disable_txq(struct iwl_mvm *mvm, int queue, u8 flags);
static inline void iwl_mvm_enable_ac_txq(struct iwl_mvm *mvm, int queue,
u8 fifo)
static inline
void iwl_mvm_enable_ac_txq(struct iwl_mvm *mvm, int queue,
u8 fifo, unsigned int wdg_timeout)
{
struct iwl_trans_txq_scd_cfg cfg = {
.fifo = fifo,
@ -1325,12 +1333,13 @@ static inline void iwl_mvm_enable_ac_txq(struct iwl_mvm *mvm, int queue,
.frame_limit = IWL_FRAME_LIMIT,
};
iwl_mvm_enable_txq(mvm, queue, 0, &cfg);
iwl_mvm_enable_txq(mvm, queue, 0, &cfg, wdg_timeout);
}
static inline void iwl_mvm_enable_agg_txq(struct iwl_mvm *mvm, int queue,
int fifo, int sta_id, int tid,
int frame_limit, u16 ssn)
int frame_limit, u16 ssn,
unsigned int wdg_timeout)
{
struct iwl_trans_txq_scd_cfg cfg = {
.fifo = fifo,
@ -1340,7 +1349,7 @@ static inline void iwl_mvm_enable_agg_txq(struct iwl_mvm *mvm, int queue,
.aggregate = true,
};
iwl_mvm_enable_txq(mvm, queue, ssn, &cfg);
iwl_mvm_enable_txq(mvm, queue, ssn, &cfg, wdg_timeout);
}
/* Assoc status */

28
drivers/net/wireless/iwlwifi/mvm/ops.c
View File

@ -93,6 +93,7 @@ static const struct iwl_op_mode_ops iwl_mvm_ops;
struct iwl_mvm_mod_params iwlmvm_mod_params = {
.power_scheme = IWL_POWER_SCHEME_BPS,
.tfd_q_hang_detect = true
/* rest of fields are 0 by default */
};
@ -102,6 +103,10 @@ MODULE_PARM_DESC(init_dbg,
module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, S_IRUGO);
MODULE_PARM_DESC(power_scheme,
"power management scheme: 1-active, 2-balanced, 3-low power, default: 2");
module_param_named(tfd_q_hang_detect, iwlmvm_mod_params.tfd_q_hang_detect,
bool, S_IRUGO);
MODULE_PARM_DESC(tfd_q_hang_detect,
"TFD queues hang detection (default: true");
/*
* module init and exit functions
@ -473,11 +478,6 @@ iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DW_BC_TABLE)
trans_cfg.bc_table_dword = true;
if (!iwlwifi_mod_params.wd_disable)
trans_cfg.queue_watchdog_timeout = cfg->base_params->wd_timeout;
else
trans_cfg.queue_watchdog_timeout = IWL_WATCHDOG_DISABLED;
trans_cfg.command_names = iwl_mvm_cmd_strings;
trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE;
@ -486,6 +486,11 @@ iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
trans_cfg.sdio_adma_addr = fw->sdio_adma_addr;
/* Set a short watchdog for the command queue */
trans_cfg.cmd_q_wdg_timeout =
iwlmvm_mod_params.tfd_q_hang_detect ? IWL_DEF_WD_TIMEOUT :
IWL_WATCHDOG_DISABLED;
snprintf(mvm->hw->wiphy->fw_version,
sizeof(mvm->hw->wiphy->fw_version),
"%s", fw->fw_version);
@ -563,6 +568,9 @@ iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
if (!mvm->scan_cmd)
goto out_free;
/* Set EBS as successful as long as not stated otherwise by the FW. */
mvm->last_ebs_successful = true;
err = iwl_mvm_mac_setup_register(mvm);
if (err)
goto out_free;
@ -870,7 +878,10 @@ void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
* If WoWLAN fw asserted, don't restart either, mac80211
* can't recover this since we're already half suspended.
*/
if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
if (!mvm->restart_fw && fw_error) {
schedule_work(&mvm->fw_error_dump_wk);
} else if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART,
&mvm->status)) {
struct iwl_mvm_reprobe *reprobe;
IWL_ERR(mvm,
@ -894,16 +905,13 @@ void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
reprobe->dev = mvm->trans->dev;
INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
schedule_work(&reprobe->work);
} else if (mvm->cur_ucode == IWL_UCODE_REGULAR &&
(!fw_error || mvm->restart_fw)) {
} else if (mvm->cur_ucode == IWL_UCODE_REGULAR) {
/* don't let the transport/FW power down */
iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
if (fw_error && mvm->restart_fw > 0)
mvm->restart_fw--;
ieee80211_restart_hw(mvm->hw);
} else if (fw_error) {
schedule_work(&mvm->fw_error_dump_wk);
}
}

241
drivers/net/wireless/iwlwifi/mvm/rs.c
View File

@ -39,6 +39,7 @@
#include "sta.h"
#include "iwl-op-mode.h"
#include "mvm.h"
#include "debugfs.h"
#define RS_NAME "iwl-mvm-rs"
@ -1805,7 +1806,7 @@ static bool rs_stbc_allow(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
/* Our chip supports Tx STBC and the peer is an HT/VHT STA which
* supports STBC of at least 1*SS
*/
if (!lq_sta->stbc)
if (!lq_sta->stbc_capable)
return false;
if (!iwl_mvm_bt_coex_is_mimo_allowed(mvm, sta))
@ -2626,7 +2627,7 @@ static void rs_ht_init(struct iwl_mvm *mvm,
if (mvm->cfg->ht_params->stbc &&
(num_of_ant(iwl_mvm_get_valid_tx_ant(mvm)) > 1) &&
(ht_cap->cap & IEEE80211_HT_CAP_RX_STBC))
lq_sta->stbc = true;
lq_sta->stbc_capable = true;
lq_sta->is_vht = false;
}
@ -2645,7 +2646,12 @@ static void rs_vht_init(struct iwl_mvm *mvm,
if (mvm->cfg->ht_params->stbc &&
(num_of_ant(iwl_mvm_get_valid_tx_ant(mvm)) > 1) &&
(vht_cap->cap & IEEE80211_VHT_CAP_RXSTBC_MASK))
lq_sta->stbc = true;
lq_sta->stbc_capable = true;
if ((mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
(num_of_ant(iwl_mvm_get_valid_tx_ant(mvm)) > 1) &&
(vht_cap->cap & IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE))
lq_sta->bfer_capable = true;
lq_sta->is_vht = true;
}
@ -2778,11 +2784,12 @@ void iwl_mvm_rs_rate_init(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
rs_get_max_rate_from_mask(lq_sta->active_mimo2_rate);
IWL_DEBUG_RATE(mvm,
"RATE MASK: LEGACY=%lX SISO=%lX MIMO2=%lX VHT=%d LDPC=%d STBC=%d\n",
"LEGACY=%lX SISO=%lX MIMO2=%lX VHT=%d LDPC=%d STBC=%d BFER=%d\n",
lq_sta->active_legacy_rate,
lq_sta->active_siso_rate,
lq_sta->active_mimo2_rate,
lq_sta->is_vht, lq_sta->ldpc, lq_sta->stbc);
lq_sta->is_vht, lq_sta->ldpc, lq_sta->stbc_capable,
lq_sta->bfer_capable);
IWL_DEBUG_RATE(mvm, "MAX RATE: LEGACY=%d SISO=%d MIMO2=%d\n",
lq_sta->max_legacy_rate_idx,
lq_sta->max_siso_rate_idx,
@ -2916,23 +2923,15 @@ static void rs_build_rates_table(struct iwl_mvm *mvm,
u8 valid_tx_ant = 0;
struct iwl_lq_cmd *lq_cmd = &lq_sta->lq;
bool toggle_ant = false;
bool stbc_allowed = false;
memcpy(&rate, initial_rate, sizeof(rate));
valid_tx_ant = iwl_mvm_get_valid_tx_ant(mvm);
stbc_allowed = rs_stbc_allow(mvm, sta, lq_sta);
if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LQ_SS_PARAMS) {
u32 ss_params = RS_SS_PARAMS_VALID;
if (stbc_allowed)
ss_params |= RS_SS_STBC_ALLOWED;
lq_cmd->ss_params = cpu_to_le32(ss_params);
} else {
/* TODO: remove old API when min FW API hits 14 */
rate.stbc = stbc_allowed;
}
/* TODO: remove old API when min FW API hits 14 */
if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LQ_SS_PARAMS) &&
rs_stbc_allow(mvm, sta, lq_sta))
rate.stbc = true;
if (is_siso(&rate)) {
num_rates = IWL_MVM_RS_INITIAL_SISO_NUM_RATES;
@ -2980,6 +2979,142 @@ static void rs_build_rates_table(struct iwl_mvm *mvm,
}
struct rs_bfer_active_iter_data {
struct ieee80211_sta *exclude_sta;
struct iwl_mvm_sta *bfer_mvmsta;
};
static void rs_bfer_active_iter(void *_data,
struct ieee80211_sta *sta)
{
struct rs_bfer_active_iter_data *data = _data;
struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
struct iwl_lq_cmd *lq_cmd = &mvmsta->lq_sta.lq;
u32 ss_params = le32_to_cpu(lq_cmd->ss_params);
if (sta == data->exclude_sta)
return;
/* The current sta has BFER allowed */
if (ss_params & LQ_SS_BFER_ALLOWED) {
WARN_ON_ONCE(data->bfer_mvmsta != NULL);
data->bfer_mvmsta = mvmsta;
}
}
static int rs_bfer_priority(struct iwl_mvm_sta *sta)
{
int prio = -1;
enum nl80211_iftype viftype = ieee80211_vif_type_p2p(sta->vif);
switch (viftype) {
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_P2P_GO:
prio = 3;
break;
case NL80211_IFTYPE_P2P_CLIENT:
prio = 2;
break;
case NL80211_IFTYPE_STATION:
prio = 1;
break;
default:
WARN_ONCE(true, "viftype %d sta_id %d", viftype, sta->sta_id);
prio = -1;
}
return prio;
}
/* Returns >0 if sta1 has a higher BFER priority compared to sta2 */
static int rs_bfer_priority_cmp(struct iwl_mvm_sta *sta1,
struct iwl_mvm_sta *sta2)
{
int prio1 = rs_bfer_priority(sta1);
int prio2 = rs_bfer_priority(sta2);
if (prio1 > prio2)
return 1;
if (prio1 < prio2)
return -1;
return 0;
}
static void rs_set_lq_ss_params(struct iwl_mvm *mvm,
struct ieee80211_sta *sta,
struct iwl_lq_sta *lq_sta,
const struct rs_rate *initial_rate)
{
struct iwl_lq_cmd *lq_cmd = &lq_sta->lq;
struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
struct rs_bfer_active_iter_data data = {
.exclude_sta = sta,
.bfer_mvmsta = NULL,
};
struct iwl_mvm_sta *bfer_mvmsta = NULL;
u32 ss_params = LQ_SS_PARAMS_VALID;
if (!iwl_mvm_bt_coex_is_mimo_allowed(mvm, sta))
goto out;
/* Check if forcing the decision is configured.
* Note that SISO is forced by not allowing STBC or BFER
*/
if (lq_sta->ss_force == RS_SS_FORCE_STBC)
ss_params |= (LQ_SS_STBC_1SS_ALLOWED | LQ_SS_FORCE);
else if (lq_sta->ss_force == RS_SS_FORCE_BFER)
ss_params |= (LQ_SS_BFER_ALLOWED | LQ_SS_FORCE);
if (lq_sta->ss_force != RS_SS_FORCE_NONE) {
IWL_DEBUG_RATE(mvm, "Forcing single stream Tx decision %d\n",
lq_sta->ss_force);
goto out;
}
if (lq_sta->stbc_capable)
ss_params |= LQ_SS_STBC_1SS_ALLOWED;
if (!lq_sta->bfer_capable)
goto out;
ieee80211_iterate_stations_atomic(mvm->hw,
rs_bfer_active_iter,
&data);
bfer_mvmsta = data.bfer_mvmsta;
/* This code is safe as it doesn't run concurrently for different
* stations. This is guaranteed by the fact that calls to
* ieee80211_tx_status wouldn't run concurrently for a single HW.
*/
if (!bfer_mvmsta) {
IWL_DEBUG_RATE(mvm, "No sta with BFER allowed found. Allow\n");
ss_params |= LQ_SS_BFER_ALLOWED;
goto out;
}
IWL_DEBUG_RATE(mvm, "Found existing sta %d with BFER activated\n",
bfer_mvmsta->sta_id);
/* Disallow BFER on another STA if active and we're a higher priority */
if (rs_bfer_priority_cmp(mvmsta, bfer_mvmsta) > 0) {
struct iwl_lq_cmd *bfersta_lq_cmd = &bfer_mvmsta->lq_sta.lq;
u32 bfersta_ss_params = le32_to_cpu(bfersta_lq_cmd->ss_params);
bfersta_ss_params &= ~LQ_SS_BFER_ALLOWED;
bfersta_lq_cmd->ss_params = cpu_to_le32(bfersta_ss_params);
iwl_mvm_send_lq_cmd(mvm, bfersta_lq_cmd, false);
ss_params |= LQ_SS_BFER_ALLOWED;
IWL_DEBUG_RATE(mvm,
"Lower priority BFER sta found (%d). Switch BFER\n",
bfer_mvmsta->sta_id);
}
out:
lq_cmd->ss_params = cpu_to_le32(ss_params);
}
static void rs_fill_lq_cmd(struct iwl_mvm *mvm,
struct ieee80211_sta *sta,
struct iwl_lq_sta *lq_sta,
@ -3006,6 +3141,9 @@ static void rs_fill_lq_cmd(struct iwl_mvm *mvm,
rs_build_rates_table(mvm, sta, lq_sta, initial_rate);
if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LQ_SS_PARAMS)
rs_set_lq_ss_params(mvm, sta, lq_sta, initial_rate);
if (num_of_ant(initial_rate->ant) == 1)
lq_cmd->single_stream_ant_msk = initial_rate->ant;
@ -3379,9 +3517,73 @@ static const struct file_operations rs_sta_dbgfs_drv_tx_stats_ops = {
.llseek = default_llseek,
};
static ssize_t iwl_dbgfs_ss_force_read(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
struct iwl_lq_sta *lq_sta = file->private_data;
char buf[12];
int bufsz = sizeof(buf);
int pos = 0;
static const char * const ss_force_name[] = {
[RS_SS_FORCE_NONE] = "none",
[RS_SS_FORCE_STBC] = "stbc",
[RS_SS_FORCE_BFER] = "bfer",
[RS_SS_FORCE_SISO] = "siso",
};
pos += scnprintf(buf+pos, bufsz-pos, "%s\n",
ss_force_name[lq_sta->ss_force]);
return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
}
static ssize_t iwl_dbgfs_ss_force_write(struct iwl_lq_sta *lq_sta, char *buf,
size_t count, loff_t *ppos)
{
struct iwl_mvm *mvm = lq_sta->pers.drv;
int ret = 0;
if (!strncmp("none", buf, 4)) {
lq_sta->ss_force = RS_SS_FORCE_NONE;
} else if (!strncmp("siso", buf, 4)) {
lq_sta->ss_force = RS_SS_FORCE_SISO;
} else if (!strncmp("stbc", buf, 4)) {
if (lq_sta->stbc_capable) {
lq_sta->ss_force = RS_SS_FORCE_STBC;
} else {
IWL_ERR(mvm,
"can't force STBC. peer doesn't support\n");
ret = -EINVAL;
}
} else if (!strncmp("bfer", buf, 4)) {
if (lq_sta->bfer_capable) {
lq_sta->ss_force = RS_SS_FORCE_BFER;
} else {
IWL_ERR(mvm,
"can't force BFER. peer doesn't support\n");
ret = -EINVAL;
}
} else {
IWL_ERR(mvm, "valid values none|siso|stbc|bfer\n");
ret = -EINVAL;
}
return ret ?: count;
}
#define MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz) \
_MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz, struct iwl_lq_sta)
#define MVM_DEBUGFS_ADD_FILE_RS(name, parent, mode) do { \
if (!debugfs_create_file(#name, mode, parent, lq_sta, \
&iwl_dbgfs_##name##_ops)) \
goto err; \
} while (0)
MVM_DEBUGFS_READ_WRITE_FILE_OPS(ss_force, 32);
static void rs_add_debugfs(void *mvm, void *mvm_sta, struct dentry *dir)
{
struct iwl_lq_sta *lq_sta = mvm_sta;
debugfs_create_file("rate_scale_table", S_IRUSR | S_IWUSR, dir,
lq_sta, &rs_sta_dbgfs_scale_table_ops);
debugfs_create_file("rate_stats_table", S_IRUSR, dir,
@ -3392,6 +3594,11 @@ static void rs_add_debugfs(void *mvm, void *mvm_sta, struct dentry *dir)
&lq_sta->tx_agg_tid_en);
debugfs_create_u8("reduced_tpc", S_IRUSR | S_IWUSR, dir,
&lq_sta->pers.dbg_fixed_txp_reduction);
MVM_DEBUGFS_ADD_FILE_RS(ss_force, dir, S_IRUSR | S_IWUSR);
return;
err:
IWL_ERR((struct iwl_mvm *)mvm, "Can't create debugfs entity\n");
}
static void rs_remove_debugfs(void *mvm, void *mvm_sta)

14
drivers/net/wireless/iwlwifi/mvm/rs.h
View File

@ -240,6 +240,13 @@ enum rs_column {
RS_COLUMN_INVALID,
};
enum rs_ss_force_opt {
RS_SS_FORCE_NONE = 0,
RS_SS_FORCE_STBC,
RS_SS_FORCE_BFER,
RS_SS_FORCE_SISO,
};
/* Packet stats per rate */
struct rs_rate_stats {
u64 success;
@ -293,7 +300,9 @@ struct iwl_lq_sta {
u64 last_tx;
bool is_vht;
bool ldpc; /* LDPC Rx is supported by the STA */
bool stbc; /* Tx STBC is supported by chip and Rx by STA */
bool stbc_capable; /* Tx STBC is supported by chip and Rx by STA */
bool bfer_capable; /* Remote supports beamformee and we BFer */
enum ieee80211_band band;
/* The following are bitmaps of rates; IWL_RATE_6M_MASK, etc. */
@ -322,6 +331,9 @@ struct iwl_lq_sta {
/* tx power reduce for this sta */
int tpc_reduce;
/* force STBC/BFER/SISO for testing */
enum rs_ss_force_opt ss_force;
/* persistent fields - initialized only once - keep last! */
struct lq_sta_pers {
#ifdef CONFIG_MAC80211_DEBUGFS

24
drivers/net/wireless/iwlwifi/mvm/scan.c
View File

@ -704,7 +704,8 @@ int iwl_mvm_rx_scan_offload_complete_notif(struct iwl_mvm *mvm,
iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
}
mvm->last_ebs_successful = !ebs_status;
if (ebs_status)
mvm->last_ebs_successful = false;
return 0;
}
@ -1682,10 +1683,10 @@ int iwl_mvm_config_scan(struct iwl_mvm *mvm)
band = &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
for (i = 0; i < band->n_channels; i++, j++)
scan_config->channel_array[j] = band->channels[i].center_freq;
scan_config->channel_array[j] = band->channels[i].hw_value;
band = &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
for (i = 0; i < band->n_channels; i++, j++)
scan_config->channel_array[j] = band->channels[i].center_freq;
scan_config->channel_array[j] = band->channels[i].hw_value;
cmd.data[0] = scan_config;
cmd.len[0] = cmd_size;
@ -1862,6 +1863,13 @@ int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL;
cmd->general_flags = cpu_to_le32(flags);
if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_SINGLE_SCAN_EBS &&
mvm->last_ebs_successful)
cmd->channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS |
IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
IWL_SCAN_CHANNEL_FLAG_CACHE_ADD;
cmd->n_channels = req->req.n_channels;
for (i = 0; i < req->req.n_ssids; i++)
@ -2025,7 +2033,9 @@ int iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm,
notif->ebs_status == IWL_SCAN_EBS_SUCCESS ?
"success" : "failed");
mvm->last_ebs_successful = !notif->ebs_status;
if (notif->ebs_status)
mvm->last_ebs_successful = false;
mvm->scan_uid[uid_idx] = 0;
if (!sched) {
@ -2058,10 +2068,14 @@ static bool iwl_scan_umac_done_check(struct iwl_notif_wait_data *notif_wait,
/*
* Clear scan uid of scans that was aborted from above and completed
* in FW so the RX handler does nothing.
* in FW so the RX handler does nothing. Set last_ebs_successful here if
* needed.
*/
scan_done->mvm->scan_uid[uid_idx] = 0;
if (notif->ebs_status)
scan_done->mvm->last_ebs_successful = false;
return !iwl_mvm_find_scan_type(scan_done->mvm, scan_done->type);
}

15
drivers/net/wireless/iwlwifi/mvm/sta.c
View File

@ -209,6 +209,9 @@ static int iwl_mvm_tdls_sta_init(struct iwl_mvm *mvm,
{
unsigned long used_hw_queues;
struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ?
mvm->cfg->base_params->wd_timeout :
IWL_WATCHDOG_DISABLED;
u32 ac;
lockdep_assert_held(&mvm->mutex);
@ -232,7 +235,7 @@ static int iwl_mvm_tdls_sta_init(struct iwl_mvm *mvm,
/* Found a place for all queues - enable them */
for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
iwl_mvm_enable_ac_txq(mvm, mvmsta->hw_queue[ac],
iwl_mvm_ac_to_tx_fifo[ac]);
iwl_mvm_ac_to_tx_fifo[ac], wdg_timeout);
mvmsta->tfd_queue_msk |= BIT(mvmsta->hw_queue[ac]);
}
@ -626,13 +629,16 @@ static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm,
int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm)
{
unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ?
mvm->cfg->base_params->wd_timeout :
IWL_WATCHDOG_DISABLED;
int ret;
lockdep_assert_held(&mvm->mutex);
/* Map Aux queue to fifo - needs to happen before adding Aux station */
iwl_mvm_enable_ac_txq(mvm, mvm->aux_queue,
IWL_MVM_TX_FIFO_MCAST);
IWL_MVM_TX_FIFO_MCAST, wdg_timeout);
/* Allocate aux station and assign to it the aux queue */
ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue),
@ -965,6 +971,9 @@ int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
{
struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ?
mvm->cfg->base_params->wd_timeout :
IWL_WATCHDOG_DISABLED;
int queue, fifo, ret;
u16 ssn;
@ -988,7 +997,7 @@ int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
return -EIO;
iwl_mvm_enable_agg_txq(mvm, queue, fifo, mvmsta->sta_id, tid,
buf_size, ssn);
buf_size, ssn, wdg_timeout);
/*
* Even though in theory the peer could have different

63
drivers/net/wireless/iwlwifi/mvm/tdls.c
View File

@ -64,6 +64,8 @@
#include <linux/etherdevice.h>
#include "mvm.h"
#include "time-event.h"
#include "iwl-io.h"
#include "iwl-prph.h"
#define TU_TO_US(x) (x * 1024)
#define TU_TO_MS(x) (TU_TO_US(x) / 1000)
@ -228,6 +230,8 @@ iwl_mvm_tdls_cs_state_str(enum iwl_mvm_tdls_cs_state state)
return "IDLE";
case IWL_MVM_TDLS_SW_REQ_SENT:
return "REQ SENT";
case IWL_MVM_TDLS_SW_RESP_RCVD:
return "RESP RECEIVED";
case IWL_MVM_TDLS_SW_REQ_RCVD:
return "REQ RECEIVED";
case IWL_MVM_TDLS_SW_ACTIVE:
@ -248,6 +252,11 @@ static void iwl_mvm_tdls_update_cs_state(struct iwl_mvm *mvm,
iwl_mvm_tdls_cs_state_str(state));
mvm->tdls_cs.state = state;
/* we only send requests to our switching peer - update sent time */
if (state == IWL_MVM_TDLS_SW_REQ_SENT)
mvm->tdls_cs.peer.sent_timestamp =
iwl_read_prph(mvm->trans, DEVICE_SYSTEM_TIME_REG);
if (state == IWL_MVM_TDLS_SW_IDLE)
mvm->tdls_cs.cur_sta_id = IWL_MVM_STATION_COUNT;
}
@ -300,7 +309,7 @@ out:
static int
iwl_mvm_tdls_check_action(struct iwl_mvm *mvm,
enum iwl_tdls_channel_switch_type type,
const u8 *peer, bool peer_initiator)
const u8 *peer, bool peer_initiator, u32 timestamp)
{
bool same_peer = false;
int ret = 0;
@ -325,17 +334,30 @@ iwl_mvm_tdls_check_action(struct iwl_mvm *mvm,
ret = -EINVAL;
break;
case IWL_MVM_TDLS_SW_REQ_SENT:
/* only allow requests from the same peer */
if (!same_peer)
ret = -EBUSY;
else if (type == TDLS_SEND_CHAN_SW_RESP_AND_MOVE_CH &&
!peer_initiator)
/*
* We received a ch-switch request while an outgoing
* one is pending. Allow it if the peer is the link
* initiator.
*/
ret = -EBUSY;
else if (type == TDLS_SEND_CHAN_SW_REQ)
/* wait for idle before sending another request */
ret = -EBUSY;
else if (timestamp <= mvm->tdls_cs.peer.sent_timestamp)
/* we got a stale response - ignore it */
ret = -EINVAL;
break;
case IWL_MVM_TDLS_SW_RESP_RCVD:
/*
* We received a ch-switch request while an outgoing one is
* pending. Allow it to proceed if the other peer is the same
* one we sent to, and we are not the link initiator.
* we are waiting for the FW to give an "active" notification,
* so ignore requests in the meantime
*/
if (type == TDLS_SEND_CHAN_SW_RESP_AND_MOVE_CH) {
if (!same_peer)
ret = -EBUSY;
else if (!peer_initiator) /* we are the initiator */
ret = -EBUSY;
}
ret = -EBUSY;
break;
case IWL_MVM_TDLS_SW_REQ_RCVD:
/* as above, allow the link initiator to proceed */
@ -349,9 +371,12 @@ iwl_mvm_tdls_check_action(struct iwl_mvm *mvm,
}
break;
case IWL_MVM_TDLS_SW_ACTIVE:
/* we don't allow initiations during active channel switch */
if (type == TDLS_SEND_CHAN_SW_REQ)
ret = -EINVAL;
/*
* the only valid request when active is a request to return
* to the base channel by the current off-channel peer
*/
if (type != TDLS_MOVE_CH || !same_peer)
ret = -EBUSY;
break;
}
@ -384,7 +409,8 @@ iwl_mvm_tdls_config_channel_switch(struct iwl_mvm *mvm,
lockdep_assert_held(&mvm->mutex);
ret = iwl_mvm_tdls_check_action(mvm, type, peer, peer_initiator);
ret = iwl_mvm_tdls_check_action(mvm, type, peer, peer_initiator,
timestamp);
if (ret)
return ret;
@ -473,6 +499,8 @@ iwl_mvm_tdls_config_channel_switch(struct iwl_mvm *mvm,
type == TDLS_SEND_CHAN_SW_REQ ?
IWL_MVM_TDLS_SW_REQ_SENT :
IWL_MVM_TDLS_SW_REQ_RCVD);
} else {
iwl_mvm_tdls_update_cs_state(mvm, IWL_MVM_TDLS_SW_RESP_RCVD);
}
out:
@ -657,12 +685,15 @@ iwl_mvm_tdls_recv_channel_switch(struct ieee80211_hw *hw,
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
enum iwl_tdls_channel_switch_type type;
unsigned int delay;
const char *action_str =
params->action_code == WLAN_TDLS_CHANNEL_SWITCH_REQUEST ?
"REQ" : "RESP";
mutex_lock(&mvm->mutex);
IWL_DEBUG_TDLS(mvm,
"Received TDLS ch switch action %d from %pM status %d\n",
params->action_code, params->sta->addr, params->status);
"Received TDLS ch switch action %s from %pM status %d\n",
action_str, params->sta->addr, params->status);
/*
* we got a non-zero status from a peer we were switching to - move to

10
drivers/net/wireless/iwlwifi/mvm/utils.c
View File

@ -432,7 +432,7 @@ static void iwl_mvm_dump_umac_error_log(struct iwl_mvm *mvm)
mvm->status, table.valid);
}
IWL_ERR(mvm, "0x%08X | %-28s\n", table.error_id,
IWL_ERR(mvm, "0x%08X | %s\n", table.error_id,
desc_lookup(table.error_id));
IWL_ERR(mvm, "0x%08X | umac branchlink1\n", table.blink1);
IWL_ERR(mvm, "0x%08X | umac branchlink2\n", table.blink2);
@ -531,7 +531,8 @@ void iwl_mvm_dump_nic_error_log(struct iwl_mvm *mvm)
}
void iwl_mvm_enable_txq(struct iwl_mvm *mvm, int queue, u16 ssn,
const struct iwl_trans_txq_scd_cfg *cfg)
const struct iwl_trans_txq_scd_cfg *cfg,
unsigned int wdg_timeout)
{
struct iwl_scd_txq_cfg_cmd cmd = {
.scd_queue = queue,
@ -545,11 +546,12 @@ void iwl_mvm_enable_txq(struct iwl_mvm *mvm, int queue, u16 ssn,
};
if (!iwl_mvm_is_scd_cfg_supported(mvm)) {
iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, cfg);
iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, cfg,
wdg_timeout);
return;
}
iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL);
iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout);
WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd),
"Failed to configure queue %d on FIFO %d\n", queue, cfg->fifo);
}

10
drivers/net/wireless/iwlwifi/pcie/internal.h
View File

@ -216,6 +216,7 @@ struct iwl_pcie_txq_scratch_buf {
* @need_update: indicates need to update read/write index
* @active: stores if queue is active
* @ampdu: true if this queue is an ampdu queue for an specific RA/TID
* @wd_timeout: queue watchdog timeout (jiffies) - per queue
*
* A Tx queue consists of circular buffer of BDs (a.k.a. TFDs, transmit frame
* descriptors) and required locking structures.
@ -232,6 +233,7 @@ struct iwl_txq {
bool need_update;
u8 active;
bool ampdu;
unsigned long wd_timeout;
};
static inline dma_addr_t
@ -259,7 +261,6 @@ iwl_pcie_get_scratchbuf_dma(struct iwl_txq *txq, int idx)
* @bc_table_dword: true if the BC table expects DWORD (as opposed to bytes)
* @scd_set_active: should the transport configure the SCD for HCMD queue
* @rx_page_order: page order for receive buffer size
* @wd_timeout: queue watchdog timeout (jiffies)
* @reg_lock: protect hw register access
* @cmd_in_flight: true when we have a host command in flight
* @fw_mon_phys: physical address of the buffer for the firmware monitor
@ -302,6 +303,7 @@ struct iwl_trans_pcie {
u8 cmd_queue;
u8 cmd_fifo;
unsigned int cmd_q_wdg_timeout;
u8 n_no_reclaim_cmds;
u8 no_reclaim_cmds[MAX_NO_RECLAIM_CMDS];
@ -312,9 +314,6 @@ struct iwl_trans_pcie {
const char *const *command_names;
/* queue watchdog */
unsigned long wd_timeout;
/*protect hw register */
spinlock_t reg_lock;
bool cmd_in_flight;
@ -373,7 +372,8 @@ void iwl_pcie_tx_start(struct iwl_trans *trans, u32 scd_base_addr);
int iwl_pcie_tx_stop(struct iwl_trans *trans);
void iwl_pcie_tx_free(struct iwl_trans *trans);
void iwl_trans_pcie_txq_enable(struct iwl_trans *trans, int queue, u16 ssn,
const struct iwl_trans_txq_scd_cfg *cfg);
const struct iwl_trans_txq_scd_cfg *cfg,
unsigned int wdg_timeout);
void iwl_trans_pcie_txq_disable(struct iwl_trans *trans, int queue,
bool configure_scd);
int iwl_trans_pcie_tx(struct iwl_trans *trans, struct sk_buff *skb,

5
drivers/net/wireless/iwlwifi/pcie/trans.c
View File

@ -75,6 +75,7 @@
#include "iwl-trans.h"
#include "iwl-csr.h"
#include "iwl-prph.h"
#include "iwl-scd.h"
#include "iwl-agn-hw.h"
#include "iwl-fw-error-dump.h"
#include "internal.h"
@ -1268,6 +1269,7 @@ static void iwl_trans_pcie_configure(struct iwl_trans *trans,
trans_pcie->cmd_queue = trans_cfg->cmd_queue;
trans_pcie->cmd_fifo = trans_cfg->cmd_fifo;
trans_pcie->cmd_q_wdg_timeout = trans_cfg->cmd_q_wdg_timeout;
if (WARN_ON(trans_cfg->n_no_reclaim_cmds > MAX_NO_RECLAIM_CMDS))
trans_pcie->n_no_reclaim_cmds = 0;
else
@ -1282,9 +1284,6 @@ static void iwl_trans_pcie_configure(struct iwl_trans *trans,
else
trans_pcie->rx_page_order = get_order(4 * 1024);
trans_pcie->wd_timeout =
msecs_to_jiffies(trans_cfg->queue_watchdog_timeout);
trans_pcie->command_names = trans_cfg->command_names;
trans_pcie->bc_table_dword = trans_cfg->bc_table_dword;
trans_pcie->scd_set_active = trans_cfg->scd_set_active;

58
drivers/net/wireless/iwlwifi/pcie/tx.c
View File

@ -147,7 +147,6 @@ static void iwl_pcie_free_dma_ptr(struct iwl_trans *trans,
static void iwl_pcie_txq_stuck_timer(unsigned long data)
{
struct iwl_txq *txq = (void *)data;
struct iwl_queue *q = &txq->q;
struct iwl_trans_pcie *trans_pcie = txq->trans_pcie;
struct iwl_trans *trans = iwl_trans_pcie_get_trans(trans_pcie);
u32 scd_sram_addr = trans_pcie->scd_base_addr +
@ -164,7 +163,7 @@ static void iwl_pcie_txq_stuck_timer(unsigned long data)
spin_unlock(&txq->lock);
IWL_ERR(trans, "Queue %d stuck for %u ms.\n", txq->q.id,
jiffies_to_msecs(trans_pcie->wd_timeout));
jiffies_to_msecs(txq->wd_timeout));
IWL_ERR(trans, "Current SW read_ptr %d write_ptr %d\n",
txq->q.read_ptr, txq->q.write_ptr);
@ -198,11 +197,6 @@ static void iwl_pcie_txq_stuck_timer(unsigned long data)
iwl_read_prph(trans, SCD_QUEUE_WRPTR(i)));
}
for (i = q->read_ptr; i != q->write_ptr;
i = iwl_queue_inc_wrap(i))
IWL_ERR(trans, "scratch %d = 0x%08x\n", i,
le32_to_cpu(txq->scratchbufs[i].scratch));
iwl_force_nmi(trans);
}
@ -680,7 +674,8 @@ void iwl_pcie_tx_start(struct iwl_trans *trans, u32 scd_base_addr)
iwl_write_prph(trans, SCD_CHAINEXT_EN, 0);
iwl_trans_ac_txq_enable(trans, trans_pcie->cmd_queue,
trans_pcie->cmd_fifo);
trans_pcie->cmd_fifo,
trans_pcie->cmd_q_wdg_timeout);
/* Activate all Tx DMA/FIFO channels */
iwl_scd_activate_fifos(trans);
@ -722,7 +717,12 @@ void iwl_trans_pcie_tx_reset(struct iwl_trans *trans)
iwl_write_direct32(trans, FH_KW_MEM_ADDR_REG,
trans_pcie->kw.dma >> 4);
iwl_pcie_tx_start(trans, trans_pcie->scd_base_addr);
/*
* Send 0 as the scd_base_addr since the device may have be reset
* while we were in WoWLAN in which case SCD_SRAM_BASE_ADDR will
* contain garbage.
*/
iwl_pcie_tx_start(trans, 0);
}
/*
@ -898,6 +898,10 @@ int iwl_pcie_tx_init(struct iwl_trans *trans)
}
}
if (trans->cfg->base_params->num_of_queues > 20)
iwl_set_bits_prph(trans, SCD_GP_CTRL,
SCD_GP_CTRL_ENABLE_31_QUEUES);
return 0;
error:
/*Upon error, free only if we allocated something */
@ -906,10 +910,9 @@ error:
return ret;
}
static inline void iwl_pcie_txq_progress(struct iwl_trans_pcie *trans_pcie,
struct iwl_txq *txq)
static inline void iwl_pcie_txq_progress(struct iwl_txq *txq)
{
if (!trans_pcie->wd_timeout)
if (!txq->wd_timeout)
return;
/*
@ -919,7 +922,7 @@ static inline void iwl_pcie_txq_progress(struct iwl_trans_pcie *trans_pcie,
if (txq->q.read_ptr == txq->q.write_ptr)
del_timer(&txq->stuck_timer);
else
mod_timer(&txq->stuck_timer, jiffies + trans_pcie->wd_timeout);
mod_timer(&txq->stuck_timer, jiffies + txq->wd_timeout);
}
/* Frees buffers until index _not_ inclusive */
@ -981,7 +984,7 @@ void iwl_trans_pcie_reclaim(struct iwl_trans *trans, int txq_id, int ssn,
iwl_pcie_txq_free_tfd(trans, txq);
}
iwl_pcie_txq_progress(trans_pcie, txq);
iwl_pcie_txq_progress(txq);
if (iwl_queue_space(&txq->q) > txq->q.low_mark)
iwl_wake_queue(trans, txq);
@ -1109,7 +1112,7 @@ static void iwl_pcie_cmdq_reclaim(struct iwl_trans *trans, int txq_id, int idx)
spin_unlock_irqrestore(&trans_pcie->reg_lock, flags);
}
iwl_pcie_txq_progress(trans_pcie, txq);
iwl_pcie_txq_progress(txq);
}
static int iwl_pcie_txq_set_ratid_map(struct iwl_trans *trans, u16 ra_tid,
@ -1142,14 +1145,18 @@ static int iwl_pcie_txq_set_ratid_map(struct iwl_trans *trans, u16 ra_tid,
#define BUILD_RAxTID(sta_id, tid) (((sta_id) << 4) + (tid))
void iwl_trans_pcie_txq_enable(struct iwl_trans *trans, int txq_id, u16 ssn,
const struct iwl_trans_txq_scd_cfg *cfg)
const struct iwl_trans_txq_scd_cfg *cfg,
unsigned int wdg_timeout)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
struct iwl_txq *txq = &trans_pcie->txq[txq_id];
int fifo = -1;
if (test_and_set_bit(txq_id, trans_pcie->queue_used))
WARN_ONCE(1, "queue %d already used - expect issues", txq_id);
txq->wd_timeout = msecs_to_jiffies(wdg_timeout);
if (cfg) {
fifo = cfg->fifo;
@ -1173,7 +1180,7 @@ void iwl_trans_pcie_txq_enable(struct iwl_trans *trans, int txq_id, u16 ssn,
/* enable aggregations for the queue */
iwl_scd_txq_enable_agg(trans, txq_id);
trans_pcie->txq[txq_id].ampdu = true;
txq->ampdu = true;
} else {
/*
* disable aggregations for the queue, this will also
@ -1182,14 +1189,14 @@ void iwl_trans_pcie_txq_enable(struct iwl_trans *trans, int txq_id, u16 ssn,
*/
iwl_scd_txq_disable_agg(trans, txq_id);
ssn = trans_pcie->txq[txq_id].q.read_ptr;
ssn = txq->q.read_ptr;
}
}
/* Place first TFD at index corresponding to start sequence number.
* Assumes that ssn_idx is valid (!= 0xFFF) */
trans_pcie->txq[txq_id].q.read_ptr = (ssn & 0xff);
trans_pcie->txq[txq_id].q.write_ptr = (ssn & 0xff);
txq->q.read_ptr = (ssn & 0xff);
txq->q.write_ptr = (ssn & 0xff);
iwl_write_direct32(trans, HBUS_TARG_WRPTR,
(ssn & 0xff) | (txq_id << 8));
@ -1230,7 +1237,7 @@ void iwl_trans_pcie_txq_enable(struct iwl_trans *trans, int txq_id, u16 ssn,
txq_id, ssn & 0xff);
}
trans_pcie->txq[txq_id].active = true;
txq->active = true;
}
void iwl_trans_pcie_txq_disable(struct iwl_trans *trans, int txq_id,
@ -1495,8 +1502,8 @@ static int iwl_pcie_enqueue_hcmd(struct iwl_trans *trans,
trace_iwlwifi_dev_hcmd(trans->dev, cmd, cmd_size, &out_cmd->hdr);
/* start timer if queue currently empty */
if (q->read_ptr == q->write_ptr && trans_pcie->wd_timeout)
mod_timer(&txq->stuck_timer, jiffies + trans_pcie->wd_timeout);
if (q->read_ptr == q->write_ptr && txq->wd_timeout)
mod_timer(&txq->stuck_timer, jiffies + txq->wd_timeout);
spin_lock_irqsave(&trans_pcie->reg_lock, flags);
ret = iwl_pcie_set_cmd_in_flight(trans, cmd);
@ -1846,9 +1853,8 @@ int iwl_trans_pcie_tx(struct iwl_trans *trans, struct sk_buff *skb,
/* start timer if queue currently empty */
if (q->read_ptr == q->write_ptr) {
if (txq->need_update && trans_pcie->wd_timeout)
mod_timer(&txq->stuck_timer,
jiffies + trans_pcie->wd_timeout);
if (txq->wd_timeout)
mod_timer(&txq->stuck_timer, jiffies + txq->wd_timeout);
IWL_DEBUG_RPM(trans, "Q: %d first tx - take ref\n", q->id);
iwl_trans_pcie_ref(trans);
}