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Commit 857485c0 authored by Tomas Winkler's avatar Tomas Winkler Committed by John W. Linville
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iwlwifi: move host command sending functions to core module 

1. Host command sending functions moved from iwl4965-base.c to iwl-hcmd.c
in iwlcore module
2. enqueue_hcmd function currently stays in iwl4965-base.c. It is invoked
   through the new 'utils' field in priv's ops.
Signed-off-by: default avatarTomas Winkler <tomas.winkler@intel.com>
Signed-off-by: default avatarAssaf Krauss <assaf.krauss@intel.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 8622e705
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Showing with 399 additions and 322 deletions
drivers/net/wireless/iwlwifi/Makefile
View file @ 857485c0
obj-$(CONFIG_IWLCORE) += iwlcore.o
iwlcore-objs = iwl-core.o iwl-eeprom.o
iwlcore-objs = iwl-core.o iwl-eeprom.o iwl-hcmd.o
ifeq ($(CONFIG_IWLWIFI_DEBUGFS),y)
iwlcore-objs += iwl-debugfs.o
......
drivers/net/wireless/iwlwifi/iwl-4965-commands.h
View file @ 857485c0
......@@ -139,7 +139,7 @@ enum {
REPLY_PHY_CALIBRATION_CMD = 0xb0,
REPLY_RX_PHY_CMD = 0xc0,
REPLY_RX_MPDU_CMD = 0xc1,
REPLY_4965_RX = 0xc3,
REPLY_RX = 0xc3,
REPLY_COMPRESSED_BA = 0xc5,
REPLY_MAX = 0xff
};
......@@ -151,16 +151,16 @@ enum {
*
*****************************************************************************/
/* iwl4965_cmd_header flags value */
/* iwl_cmd_header flags value */
#define IWL_CMD_FAILED_MSK 0x40
/**
* struct iwl4965_cmd_header
* struct iwl_cmd_header
*
* This header format appears in the beginning of each command sent from the
* driver, and each response/notification received from uCode.
*/
struct iwl4965_cmd_header {
struct iwl_cmd_header {
u8 cmd; /* Command ID: REPLY_RXON, etc. */
u8 flags; /* IWL_CMD_* */
/*
......@@ -194,7 +194,7 @@ struct iwl4965_cmd_header {
* 4965 rate_n_flags bit fields
*
* rate_n_flags format is used in following 4965 commands:
* REPLY_4965_RX (response only)
* REPLY_RX (response only)
* REPLY_TX (both command and response)
* REPLY_TX_LINK_QUALITY_CMD
*
......@@ -939,7 +939,7 @@ struct iwl4965_rx_non_cfg_phy {
} __attribute__ ((packed));
/*
* REPLY_4965_RX = 0xc3 (response only, not a command)
* REPLY_RX = 0xc3 (response only, not a command)
* Used only for legacy (non 11n) frames.
*/
#define RX_RES_PHY_CNT 14
......@@ -2664,7 +2664,7 @@ struct iwl4965_led_cmd {
struct iwl4965_rx_packet {
__le32 len;
struct iwl4965_cmd_header hdr;
struct iwl_cmd_header hdr;
union {
struct iwl4965_alive_resp alive_frame;
struct iwl4965_rx_frame rx_frame;
......
drivers/net/wireless/iwlwifi/iwl-4965-hw.h
View file @ 857485c0
......@@ -113,9 +113,6 @@
#define TFD_TX_CMD_SLOTS 256
#define TFD_CMD_SLOTS 32
#define TFD_MAX_PAYLOAD_SIZE (sizeof(struct iwl4965_cmd) - \
sizeof(struct iwl4965_cmd_meta))
/*
* RX related structures and functions
*/
......
drivers/net/wireless/iwlwifi/iwl-4965-rs.c
View file @ 857485c0
......@@ -39,6 +39,7 @@
#include "../net/mac80211/ieee80211_rate.h"
#include "iwl-4965.h"
#include "iwl-core.h"
#include "iwl-helpers.h"
#define RS_NAME "iwl-4965-rs"
......@@ -230,7 +231,7 @@ static s32 expected_tpt_mimo40MHzSGI[IWL_RATE_COUNT] = {
};
static int iwl4965_lq_sync_callback(struct iwl_priv *priv,
struct iwl4965_cmd *cmd, struct sk_buff *skb)
struct iwl_cmd *cmd, struct sk_buff *skb)
{
/*We didn't cache the SKB; let the caller free it */
return 1;
......@@ -247,7 +248,7 @@ static int rs_send_lq_cmd(struct iwl_priv *priv,
#ifdef CONFIG_IWLWIFI_DEBUG
int i;
#endif
struct iwl4965_host_cmd cmd = {
struct iwl_host_cmd cmd = {
.id = REPLY_TX_LINK_QUALITY_CMD,
.len = sizeof(struct iwl4965_link_quality_cmd),
.meta.flags = flags,
......@@ -276,7 +277,7 @@ static int rs_send_lq_cmd(struct iwl_priv *priv,
if (iwl4965_is_associated(priv) && priv->assoc_station_added &&
priv->lq_mngr.lq_ready)
return iwl4965_send_cmd(priv, &cmd);
return iwl_send_cmd(priv, &cmd);
return 0;
}
......
drivers/net/wireless/iwlwifi/iwl-4965.c
View file @ 857485c0
......@@ -861,7 +861,7 @@ void iwl4965_rf_kill_ct_config(struct iwl_priv *priv)
u32 temp_th;
u32 crit_temperature;
unsigned long flags;
int rc = 0;
int ret = 0;
spin_lock_irqsave(&priv->lock, flags);
iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
......@@ -882,9 +882,9 @@ void iwl4965_rf_kill_ct_config(struct iwl_priv *priv)
crit_temperature = ((temp_th * (R3-R1))/CT_LIMIT_CONST) + R2;
cmd.critical_temperature_R = cpu_to_le32(crit_temperature);
rc = iwl4965_send_cmd_pdu(priv,
REPLY_CT_KILL_CONFIG_CMD, sizeof(cmd), &cmd);
if (rc)
ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
sizeof(cmd), &cmd);
if (ret)
IWL_ERROR("REPLY_CT_KILL_CONFIG_CMD failed\n");
else
IWL_DEBUG_INFO("REPLY_CT_KILL_CONFIG_CMD succeeded\n");
......@@ -1157,7 +1157,7 @@ static int iwl4965_sens_auto_corr_ofdm(struct iwl_priv *priv,
}
static int iwl4965_sensitivity_callback(struct iwl_priv *priv,
struct iwl4965_cmd *cmd, struct sk_buff *skb)
struct iwl_cmd *cmd, struct sk_buff *skb)
{
/* We didn't cache the SKB; let the caller free it */
return 1;
......@@ -1166,15 +1166,15 @@ static int iwl4965_sensitivity_callback(struct iwl_priv *priv,
/* Prepare a SENSITIVITY_CMD, send to uCode if values have changed */
static int iwl4965_sensitivity_write(struct iwl_priv *priv, u8 flags)
{
int rc = 0;
struct iwl4965_sensitivity_cmd cmd ;
struct iwl4965_sensitivity_data *data = NULL;
struct iwl4965_host_cmd cmd_out = {
struct iwl_host_cmd cmd_out = {
.id = SENSITIVITY_CMD,
.len = sizeof(struct iwl4965_sensitivity_cmd),
.meta.flags = flags,
.data = &cmd,
};
int ret;
data = &(priv->sensitivity_data);
......@@ -1232,20 +1232,18 @@ static int iwl4965_sensitivity_write(struct iwl_priv *priv, u8 flags)
memcpy(&(priv->sensitivity_tbl[0]), &(cmd.table[0]),
sizeof(u16)*HD_TABLE_SIZE);
rc = iwl4965_send_cmd(priv, &cmd_out);
if (!rc) {
IWL_DEBUG_CALIB("SENSITIVITY_CMD succeeded\n");
return rc;
}
ret = iwl_send_cmd(priv, &cmd_out);
if (ret)
IWL_ERROR("SENSITIVITY_CMD failed\n");
return 0;
return ret;
}
void iwl4965_init_sensitivity(struct iwl_priv *priv, u8 flags, u8 force)
{
int rc = 0;
int i;
struct iwl4965_sensitivity_data *data = NULL;
int i;
int ret = 0;
IWL_DEBUG_CALIB("Start iwl4965_init_sensitivity\n");
......@@ -1289,8 +1287,8 @@ void iwl4965_init_sensitivity(struct iwl_priv *priv, u8 flags, u8 force)
memset(&(priv->sensitivity_tbl[0]), 0,
sizeof(u16)*HD_TABLE_SIZE);
rc |= iwl4965_sensitivity_write(priv, flags);
IWL_DEBUG_CALIB("<<return 0x%X\n", rc);
ret |= iwl4965_sensitivity_write(priv, flags);
IWL_DEBUG_CALIB("<<return 0x%X\n", ret);
return;
}
......@@ -1302,7 +1300,6 @@ void iwl4965_init_sensitivity(struct iwl_priv *priv, u8 flags, u8 force)
void iwl4965_chain_noise_reset(struct iwl_priv *priv)
{
struct iwl4965_chain_noise_data *data = NULL;
int rc = 0;
data = &(priv->chain_noise_data);
if ((data->state == IWL_CHAIN_NOISE_ALIVE) && iwl4965_is_associated(priv)) {
......@@ -1313,7 +1310,7 @@ void iwl4965_chain_noise_reset(struct iwl_priv *priv)
cmd.diff_gain_a = 0;
cmd.diff_gain_b = 0;
cmd.diff_gain_c = 0;
rc = iwl4965_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD,
iwl_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD,
sizeof(cmd), &cmd);
msleep(4);
data->state = IWL_CHAIN_NOISE_ACCUMULATE;
......@@ -1332,7 +1329,7 @@ static void iwl4965_noise_calibration(struct iwl_priv *priv,
struct iwl4965_notif_statistics *stat_resp)
{
struct iwl4965_chain_noise_data *data = NULL;
int rc = 0;
int ret = 0;
u32 chain_noise_a;
u32 chain_noise_b;
......@@ -1538,9 +1535,9 @@ static void iwl4965_noise_calibration(struct iwl_priv *priv,
cmd.diff_gain_a = data->delta_gain_code[0];
cmd.diff_gain_b = data->delta_gain_code[1];
cmd.diff_gain_c = data->delta_gain_code[2];
rc = iwl4965_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD,
ret = iwl_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD,
sizeof(cmd), &cmd);
if (rc)
if (ret)
IWL_DEBUG_CALIB("fail sending cmd "
"REPLY_PHY_CALIBRATION_CMD \n");
......@@ -1564,7 +1561,6 @@ static void iwl4965_noise_calibration(struct iwl_priv *priv,
static void iwl4965_sensitivity_calibration(struct iwl_priv *priv,
struct iwl4965_notif_statistics *resp)
{
int rc = 0;
u32 rx_enable_time;
u32 fa_cck;
u32 fa_ofdm;
......@@ -1577,6 +1573,7 @@ static void iwl4965_sensitivity_calibration(struct iwl_priv *priv,
struct statistics_rx *statistics = &(resp->rx);
unsigned long flags;
struct statistics_general_data statis;
int ret;
data = &(priv->sensitivity_data);
......@@ -1661,7 +1658,7 @@ static void iwl4965_sensitivity_calibration(struct iwl_priv *priv,
iwl4965_sens_auto_corr_ofdm(priv, norm_fa_ofdm, rx_enable_time);
iwl4965_sens_energy_cck(priv, norm_fa_cck, rx_enable_time, &statis);
rc |= iwl4965_sensitivity_write(priv, CMD_ASYNC);
ret = iwl4965_sensitivity_write(priv, CMD_ASYNC);
return;
}
......@@ -1789,7 +1786,7 @@ int iwl4965_alive_notify(struct iwl_priv *priv)
u32 a;
int i = 0;
unsigned long flags;
int rc;
int ret;
spin_lock_irqsave(&priv->lock, flags);
......@@ -1802,10 +1799,10 @@ int iwl4965_alive_notify(struct iwl_priv *priv)
priv->chain_noise_data.delta_gain_code[i] =
CHAIN_NOISE_DELTA_GAIN_INIT_VAL;
#endif /* CONFIG_IWL4965_SENSITIVITY*/
rc = iwl4965_grab_nic_access(priv);
if (rc) {
ret = iwl4965_grab_nic_access(priv);
if (ret) {
spin_unlock_irqrestore(&priv->lock, flags);
return rc;
return ret;
}
/* Clear 4965's internal Tx Scheduler data base */
......@@ -1868,7 +1865,7 @@ int iwl4965_alive_notify(struct iwl_priv *priv)
iwl4965_release_nic_access(priv);
spin_unlock_irqrestore(&priv->lock, flags);
return 0;
return ret;
}
/**
......@@ -2719,7 +2716,7 @@ static int iwl4965_fill_txpower_tbl(struct iwl_priv *priv, u8 band, u16 channel,
int iwl4965_hw_reg_send_txpower(struct iwl_priv *priv)
{
struct iwl4965_txpowertable_cmd cmd = { 0 };
int rc = 0;
int ret;
u8 band = 0;
u8 is_fat = 0;
u8 ctrl_chan_high = 0;
......@@ -2743,14 +2740,16 @@ int iwl4965_hw_reg_send_txpower(struct iwl_priv *priv)
cmd.band = band;
cmd.channel = priv->active_rxon.channel;
rc = iwl4965_fill_txpower_tbl(priv, band,
ret = iwl4965_fill_txpower_tbl(priv, band,
le16_to_cpu(priv->active_rxon.channel),
is_fat, ctrl_chan_high, &cmd.tx_power);
if (rc)
return rc;
if (ret)
goto out;
rc = iwl4965_send_cmd_pdu(priv, REPLY_TX_PWR_TABLE_CMD, sizeof(cmd), &cmd);
return rc;
ret = iwl_send_cmd_pdu(priv, REPLY_TX_PWR_TABLE_CMD, sizeof(cmd), &cmd);
out:
return ret;
}
int iwl4965_hw_channel_switch(struct iwl_priv *priv, u16 channel)
......@@ -2790,7 +2789,7 @@ int iwl4965_hw_channel_switch(struct iwl_priv *priv, u16 channel)
return rc;
}
rc = iwl4965_send_cmd_pdu(priv, REPLY_CHANNEL_SWITCH, sizeof(cmd), &cmd);
rc = iwl_send_cmd_pdu(priv, REPLY_CHANNEL_SWITCH, sizeof(cmd), &cmd);
return rc;
}
......@@ -2798,7 +2797,7 @@ int iwl4965_hw_channel_switch(struct iwl_priv *priv, u16 channel)
#define RTS_DFAULT_RETRY_LIMIT 60
void iwl4965_hw_build_tx_cmd_rate(struct iwl_priv *priv,
struct iwl4965_cmd *cmd,
struct iwl_cmd *cmd,
struct ieee80211_tx_control *ctrl,
struct ieee80211_hdr *hdr, int sta_id,
int is_hcca)
......@@ -3863,7 +3862,7 @@ static inline void iwl4965_dbg_report_frame(struct iwl_priv *priv,
#define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
/* Called for REPLY_4965_RX (legacy ABG frames), or
/* Called for REPLY_RX (legacy ABG frames), or
* REPLY_RX_MPDU_CMD (HT high-throughput N frames). */
static void iwl4965_rx_reply_rx(struct iwl_priv *priv,
struct iwl4965_rx_mem_buffer *rxb)
......@@ -3874,7 +3873,7 @@ static void iwl4965_rx_reply_rx(struct iwl_priv *priv,
/* Use phy data (Rx signal strength, etc.) contained within
* this rx packet for legacy frames,
* or phy data cached from REPLY_RX_PHY_CMD for HT frames. */
int include_phy = (pkt->hdr.cmd == REPLY_4965_RX);
int include_phy = (pkt->hdr.cmd == REPLY_RX);
struct iwl4965_rx_phy_res *rx_start = (include_phy) ?
(struct iwl4965_rx_phy_res *)&(pkt->u.raw[0]) :
(struct iwl4965_rx_phy_res *)&priv->last_phy_res[1];
......@@ -4562,7 +4561,7 @@ void iwl4965_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
/* Update the rate scaling for control frame Tx to AP */
link_cmd.sta_id = is_ap ? IWL_AP_ID : priv->hw_setting.bcast_sta_id;
iwl4965_send_cmd_pdu(priv, REPLY_TX_LINK_QUALITY_CMD, sizeof(link_cmd),
iwl_send_cmd_pdu(priv, REPLY_TX_LINK_QUALITY_CMD, sizeof(link_cmd),
&link_cmd);
}
......@@ -4915,7 +4914,7 @@ int iwl4965_mac_ampdu_action(struct ieee80211_hw *hw,
void iwl4965_hw_rx_handler_setup(struct iwl_priv *priv)
{
/* Legacy Rx frames */
priv->rx_handlers[REPLY_4965_RX] = iwl4965_rx_reply_rx;
priv->rx_handlers[REPLY_RX] = iwl4965_rx_reply_rx;
/* High-throughput (HT) Rx frames */
priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl4965_rx_reply_rx_phy;
......@@ -4948,6 +4947,10 @@ void iwl4965_hw_cancel_deferred_work(struct iwl_priv *priv)
cancel_delayed_work(&priv->init_alive_start);
}
static struct iwl_hcmd_utils_ops iwl4965_hcmd_utils = {
.enqueue_hcmd = iwl4965_enqueue_hcmd,
};
static struct iwl_lib_ops iwl4965_lib = {
.init_drv = iwl4965_init_drv,
.eeprom_ops = {
......@@ -4959,6 +4962,7 @@ static struct iwl_lib_ops iwl4965_lib = {
static struct iwl_ops iwl4965_ops = {
.lib = &iwl4965_lib,
.utils = &iwl4965_hcmd_utils,
};
static struct iwl_cfg iwl4965_agn_cfg = {
......
drivers/net/wireless/iwlwifi/iwl-4965.h
View file @ 857485c0
......@@ -140,7 +140,7 @@ struct iwl4965_tx_info {
struct iwl4965_tx_queue {
struct iwl4965_queue q;
struct iwl4965_tfd_frame *bd;
struct iwl4965_cmd *cmd;
struct iwl_cmd *cmd;
dma_addr_t dma_addr_cmd;
struct iwl4965_tx_info *txb;
int need_update;
......@@ -312,15 +312,15 @@ enum {
CMD_WANT_SKB = (1 << 2),
};
struct iwl4965_cmd;
struct iwl_cmd;
struct iwl_priv;
struct iwl4965_cmd_meta {
struct iwl4965_cmd_meta *source;
struct iwl_cmd_meta {
struct iwl_cmd_meta *source;
union {
struct sk_buff *skb;
int (*callback)(struct iwl_priv *priv,
struct iwl4965_cmd *cmd, struct sk_buff *skb);
struct iwl_cmd *cmd, struct sk_buff *skb);
} __attribute__ ((packed)) u;
/* The CMD_SIZE_HUGE flag bit indicates that the command
......@@ -330,15 +330,15 @@ struct iwl4965_cmd_meta {
} __attribute__ ((packed));
/**
* struct iwl4965_cmd
* struct iwl_cmd
*
* For allocation of the command and tx queues, this establishes the overall
* size of the largest command we send to uCode, except for a scan command
* (which is relatively huge; space is allocated separately).
*/
struct iwl4965_cmd {
struct iwl4965_cmd_meta meta; /* driver data */
struct iwl4965_cmd_header hdr; /* uCode API */
struct iwl_cmd {
struct iwl_cmd_meta meta; /* driver data */
struct iwl_cmd_header hdr; /* uCode API */
union {
struct iwl4965_addsta_cmd addsta;
struct iwl4965_led_cmd led;
......@@ -358,15 +358,15 @@ struct iwl4965_cmd {
} __attribute__ ((packed)) cmd;
} __attribute__ ((packed));
struct iwl4965_host_cmd {
struct iwl_host_cmd {
u8 id;
u16 len;
struct iwl4965_cmd_meta meta;
struct iwl_cmd_meta meta;
const void *data;
};
#define TFD_MAX_PAYLOAD_SIZE (sizeof(struct iwl4965_cmd) - \
sizeof(struct iwl4965_cmd_meta))
#define TFD_MAX_PAYLOAD_SIZE (sizeof(struct iwl_cmd) - \
sizeof(struct iwl_cmd_meta))
/*
* RX related structures and functions
......@@ -656,10 +656,6 @@ extern int iwl4965_tx_queue_init(struct iwl_priv *priv,
struct iwl4965_tx_queue *txq, int count, u32 id);
extern void iwl4965_rx_replenish(void *data);
extern void iwl4965_tx_queue_free(struct iwl_priv *priv, struct iwl4965_tx_queue *txq);
extern int iwl4965_send_cmd_pdu(struct iwl_priv *priv, u8 id, u16 len,
const void *data);
extern int __must_check iwl4965_send_cmd(struct iwl_priv *priv,
struct iwl4965_host_cmd *cmd);
extern unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
struct ieee80211_hdr *hdr,
const u8 *dest, int left);
......@@ -674,6 +670,7 @@ int iwl4965_init_geos(struct iwl_priv *priv);
void iwl4965_free_geos(struct iwl_priv *priv);
extern const u8 iwl4965_broadcast_addr[ETH_ALEN];
int iwl4965_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd);
/*
* Currently used by iwl-3945-rs... look at restructuring so that it doesn't
......@@ -718,7 +715,7 @@ extern unsigned int iwl4965_hw_get_beacon_cmd(struct iwl_priv *priv,
struct iwl4965_frame *frame, u8 rate);
extern int iwl4965_hw_get_rx_read(struct iwl_priv *priv);
extern void iwl4965_hw_build_tx_cmd_rate(struct iwl_priv *priv,
struct iwl4965_cmd *cmd,
struct iwl_cmd *cmd,
struct ieee80211_tx_control *ctrl,
struct ieee80211_hdr *hdr,
int sta_id, int tx_id);
......
drivers/net/wireless/iwlwifi/iwl-core.h
View file @ 857485c0
......@@ -63,6 +63,13 @@
#ifndef __iwl_core_h__
#define __iwl_core_h__
/************************
* forward declarations *
************************/
struct iwl_host_cmd;
struct iwl_cmd;
#define IWLWIFI_VERSION "1.2.26k"
#define DRV_COPYRIGHT "Copyright(c) 2003-2008 Intel Corporation"
......@@ -75,6 +82,10 @@
#define IWL_SKU_A 0x2
#define IWL_SKU_N 0x8
struct iwl_hcmd_utils_ops {
int (*enqueue_hcmd)(struct iwl_priv *priv, struct iwl_host_cmd *cmd);
};
struct iwl_lib_ops {
/* iwlwifi driver (priv) init */
int (*init_drv)(struct iwl_priv *priv);
......@@ -84,6 +95,7 @@ struct iwl_lib_ops {
struct iwl_ops {
const struct iwl_lib_ops *lib;
const struct iwl_hcmd_utils_ops *utils;
};
struct iwl_mod_params {
......@@ -120,4 +132,18 @@ int iwlcore_set_rxon_channel(struct iwl_priv *priv,
int iwl_setup(struct iwl_priv *priv);
/*****************************************************
* S e n d i n g H o s t C o m m a n d s *
*****************************************************/
const char *get_cmd_string(u8 cmd);
int iwl_send_cmd_sync(struct iwl_priv *priv, struct iwl_host_cmd *cmd);
int iwl_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd);
int iwl_send_cmd_pdu(struct iwl_priv *priv, u8 id, u16 len, const void *data);
int iwl_send_cmd_pdu_async(struct iwl_priv *priv, u8 id, u16 len,
const void *data,
int (*callback)(struct iwl_priv *priv,
struct iwl_cmd *cmd,
struct sk_buff *skb));
#endif /* __iwl_core_h__ */
drivers/net/wireless/iwlwifi/iwl-hcmd.c 0 → 100644
View file @ 857485c0
/******************************************************************************
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
* USA
*
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.GPL.
*
* Contact Information:
* Tomas Winkler <tomas.winkler@intel.com>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*****************************************************************************/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/version.h>
#include <net/mac80211.h>
#include "iwl-4965.h" /* FIXME: remove */
#include "iwl-debug.h"
#include "iwl-eeprom.h"
#include "iwl-core.h"
#define IWL_CMD(x) case x : return #x
const char *get_cmd_string(u8 cmd)
{
switch (cmd) {
IWL_CMD(REPLY_ALIVE);
IWL_CMD(REPLY_ERROR);
IWL_CMD(REPLY_RXON);
IWL_CMD(REPLY_RXON_ASSOC);
IWL_CMD(REPLY_QOS_PARAM);
IWL_CMD(REPLY_RXON_TIMING);
IWL_CMD(REPLY_ADD_STA);
IWL_CMD(REPLY_REMOVE_STA);
IWL_CMD(REPLY_REMOVE_ALL_STA);
IWL_CMD(REPLY_TX);
IWL_CMD(REPLY_RATE_SCALE);
IWL_CMD(REPLY_LEDS_CMD);
IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
IWL_CMD(RADAR_NOTIFICATION);
IWL_CMD(REPLY_QUIET_CMD);
IWL_CMD(REPLY_CHANNEL_SWITCH);
IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
IWL_CMD(POWER_TABLE_CMD);
IWL_CMD(PM_SLEEP_NOTIFICATION);
IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
IWL_CMD(REPLY_SCAN_CMD);
IWL_CMD(REPLY_SCAN_ABORT_CMD);
IWL_CMD(SCAN_START_NOTIFICATION);
IWL_CMD(SCAN_RESULTS_NOTIFICATION);
IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
IWL_CMD(BEACON_NOTIFICATION);
IWL_CMD(REPLY_TX_BEACON);
IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
IWL_CMD(QUIET_NOTIFICATION);
IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
IWL_CMD(MEASURE_ABORT_NOTIFICATION);
IWL_CMD(REPLY_BT_CONFIG);
IWL_CMD(REPLY_STATISTICS_CMD);
IWL_CMD(STATISTICS_NOTIFICATION);
IWL_CMD(REPLY_CARD_STATE_CMD);
IWL_CMD(CARD_STATE_NOTIFICATION);
IWL_CMD(MISSED_BEACONS_NOTIFICATION);
IWL_CMD(REPLY_CT_KILL_CONFIG_CMD);
IWL_CMD(SENSITIVITY_CMD);
IWL_CMD(REPLY_PHY_CALIBRATION_CMD);
IWL_CMD(REPLY_RX_PHY_CMD);
IWL_CMD(REPLY_RX_MPDU_CMD);
IWL_CMD(REPLY_RX);
IWL_CMD(REPLY_COMPRESSED_BA);
default:
return "UNKNOWN";
}
}
EXPORT_SYMBOL(get_cmd_string);
#define HOST_COMPLETE_TIMEOUT (HZ / 2)
static int iwl_send_cmd_async(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
{
int ret;
BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
/* An asynchronous command can not expect an SKB to be set. */
BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
/* An asynchronous command MUST have a callback. */
BUG_ON(!cmd->meta.u.callback);
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
return -EBUSY;
ret = priv->cfg->ops->utils->enqueue_hcmd(priv, cmd);
if (ret < 0) {
IWL_ERROR("Error sending %s: enqueue_hcmd failed: %d\n",
get_cmd_string(cmd->id), ret);
return ret;
}
return 0;
}
int iwl_send_cmd_sync(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
{
int cmd_idx;
int ret;
static atomic_t entry = ATOMIC_INIT(0); /* reentrance protection */
BUG_ON(cmd->meta.flags & CMD_ASYNC);
/* A synchronous command can not have a callback set. */
BUG_ON(cmd->meta.u.callback != NULL);
if (atomic_xchg(&entry, 1)) {
IWL_ERROR("Error sending %s: Already sending a host command\n",
get_cmd_string(cmd->id));
return -EBUSY;
}
set_bit(STATUS_HCMD_ACTIVE, &priv->status);
if (cmd->meta.flags & CMD_WANT_SKB)
cmd->meta.source = &cmd->meta;
cmd_idx = priv->cfg->ops->utils->enqueue_hcmd(priv, cmd);
if (cmd_idx < 0) {
ret = cmd_idx;
IWL_ERROR("Error sending %s: enqueue_hcmd failed: %d\n",
get_cmd_string(cmd->id), ret);
goto out;
}
ret = wait_event_interruptible_timeout(priv->wait_command_queue,
!test_bit(STATUS_HCMD_ACTIVE, &priv->status),
HOST_COMPLETE_TIMEOUT);
if (!ret) {
if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
IWL_ERROR("Error sending %s: time out after %dms.\n",
get_cmd_string(cmd->id),
jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
ret = -ETIMEDOUT;
goto cancel;
}
}
if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
get_cmd_string(cmd->id));
ret = -ECANCELED;
goto fail;
}
if (test_bit(STATUS_FW_ERROR, &priv->status)) {
IWL_DEBUG_INFO("Command %s failed: FW Error\n",
get_cmd_string(cmd->id));
ret = -EIO;
goto fail;
}
if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
IWL_ERROR("Error: Response NULL in '%s'\n",
get_cmd_string(cmd->id));
ret = -EIO;
goto out;
}
ret = 0;
goto out;
cancel:
if (cmd->meta.flags & CMD_WANT_SKB) {
struct iwl_cmd *qcmd;
/* Cancel the CMD_WANT_SKB flag for the cmd in the
* TX cmd queue. Otherwise in case the cmd comes
* in later, it will possibly set an invalid
* address (cmd->meta.source). */
qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
qcmd->meta.flags &= ~CMD_WANT_SKB;
}
fail:
if (cmd->meta.u.skb) {
dev_kfree_skb_any(cmd->meta.u.skb);
cmd->meta.u.skb = NULL;
}
out:
atomic_set(&entry, 0);
return ret;
}
EXPORT_SYMBOL(iwl_send_cmd_sync);
int iwl_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
{
if (cmd->meta.flags & CMD_ASYNC)
return iwl_send_cmd_async(priv, cmd);
return iwl_send_cmd_sync(priv, cmd);
}
EXPORT_SYMBOL(iwl_send_cmd);
int iwl_send_cmd_pdu(struct iwl_priv *priv, u8 id, u16 len, const void *data)
{
struct iwl_host_cmd cmd = {
.id = id,
.len = len,
.data = data,
};
return iwl_send_cmd_sync(priv, &cmd);
}
EXPORT_SYMBOL(iwl_send_cmd_pdu);
int iwl_send_cmd_pdu_async(struct iwl_priv *priv,
u8 id, u16 len, const void *data,
int (*callback)(struct iwl_priv *priv,
struct iwl_cmd *cmd,
struct sk_buff *skb))
{
struct iwl_host_cmd cmd = {
.id = id,
.len = len,
.data = data,
};
cmd.meta.flags |= CMD_ASYNC;
cmd.meta.u.callback = callback;
return iwl_send_cmd_async(priv, &cmd);
}
EXPORT_SYMBOL(iwl_send_cmd_pdu_async);
drivers/net/wireless/iwlwifi/iwl4965-base.c
View file @ 857485c0
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