- 根目录:
- drivers
- net
- wireless
- libertas
- cmd.c
/*
* This file contains the handling of command.
* It prepares command and sends it to firmware when it is ready.
*/
#include <linux/hardirq.h>
#include <linux/kfifo.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/if_arp.h>
#include <linux/export.h>
#include "decl.h"
#include "cfg.h"
#include "cmd.h"
#define CAL_NF(nf) ((s32)(-(s32)(nf)))
#define CAL_RSSI(snr, nf) ((s32)((s32)(snr) + CAL_NF(nf)))
/**
* lbs_cmd_copyback - Simple callback that copies response back into command
*
* @priv: A pointer to &struct lbs_private structure
* @extra: A pointer to the original command structure for which
* 'resp' is a response
* @resp: A pointer to the command response
*
* returns: 0 on success, error on failure
*/
int lbs_cmd_copyback(struct lbs_private *priv, unsigned long extra,
struct cmd_header *resp)
{
struct cmd_header *buf = (void *)extra;
uint16_t copy_len;
copy_len = min(le16_to_cpu(buf->size), le16_to_cpu(resp->size));
memcpy(buf, resp, copy_len);
return 0;
}
EXPORT_SYMBOL_GPL(lbs_cmd_copyback);
/**
* lbs_cmd_async_callback - Simple callback that ignores the result.
* Use this if you just want to send a command to the hardware, but don't
* care for the result.
*
* @priv: ignored
* @extra: ignored
* @resp: ignored
*
* returns: 0 for success
*/
static int lbs_cmd_async_callback(struct lbs_private *priv, unsigned long extra,
struct cmd_header *resp)
{
return 0;
}
/**
* is_command_allowed_in_ps - tests if a command is allowed in Power Save mode
*
* @cmd: the command ID
*
* returns: 1 if allowed, 0 if not allowed
*/
static u8 is_command_allowed_in_ps(u16 cmd)
{
switch (cmd) {
case CMD_802_11_RSSI:
return 1;
case CMD_802_11_HOST_SLEEP_CFG:
return 1;
default:
break;
}
return 0;
}
/**
* lbs_update_hw_spec - Updates the hardware details like MAC address
* and regulatory region
*
* @priv: A pointer to &struct lbs_private structure
*
* returns: 0 on success, error on failure
*/
int lbs_update_hw_spec(struct lbs_private *priv)
{
struct cmd_ds_get_hw_spec cmd;
int ret = -1;
u32 i;
lbs_deb_enter(LBS_DEB_CMD);
memset(&cmd, 0, sizeof(cmd));
cmd.hdr.size = cpu_to_le16(sizeof(cmd));
memcpy(cmd.permanentaddr, priv->current_addr, ETH_ALEN);
ret = lbs_cmd_with_response(priv, CMD_GET_HW_SPEC, &cmd);
if (ret)
goto out;
priv->fwcapinfo = le32_to_cpu(cmd.fwcapinfo);
/* The firmware release is in an interesting format: the patch
* level is in the most significant nibble ... so fix that: */
priv->fwrelease = le32_to_cpu(cmd.fwrelease);
priv->fwrelease = (priv->fwrelease << 8) |
(priv->fwrelease >> 24 & 0xff);
/* Some firmware capabilities:
* CF card firmware 5.0.16p0: cap 0x00000303
* USB dongle firmware 5.110.17p2: cap 0x00000303
*/
netdev_info(priv->dev, "%pM, fw %u.%u.%up%u, cap 0x%08x\n",
cmd.permanentaddr,
priv->fwrelease >> 24 & 0xff,
priv->fwrelease >> 16 & 0xff,
priv->fwrelease >> 8 & 0xff,
priv->fwrelease & 0xff,
priv->fwcapinfo);
lbs_deb_cmd("GET_HW_SPEC: hardware interface 0x%x, hardware spec 0x%04x\n",
cmd.hwifversion, cmd.version);
/* Clamp region code to 8-bit since FW spec indicates that it should
* only ever be 8-bit, even though the field size is 16-bit. Some firmware
* returns non-zero high 8 bits here.
*
* Firmware version 4.0.102 used in CF8381 has region code shifted. We
* need to check for this problem and handle it properly.
*/
if (MRVL_FW_MAJOR_REV(priv->fwrelease) == MRVL_FW_V4)
priv->regioncode = (le16_to_cpu(cmd.regioncode) >> 8) & 0xFF;
else
priv->regioncode = le16_to_cpu(cmd.regioncode) & 0xFF;
for (i = 0; i < MRVDRV_MAX_REGION_CODE; i++) {
/* use the region code to search for the index */
if (priv->regioncode == lbs_region_code_to_index[i])
break;
}
/* if it's unidentified region code, use the default (USA) */
if (i >= MRVDRV_MAX_REGION_CODE) {
priv->regioncode = 0x10;
netdev_info(priv->dev,
"unidentified region code; using the default (USA)\n");
}
if (priv->current_addr[0] == 0xff)
memmove(priv->current_addr, cmd.permanentaddr, ETH_ALEN);
if (!priv->copied_hwaddr) {
memcpy(priv->dev->dev_addr, priv->current_addr, ETH_ALEN);
if (priv->mesh_dev)
memcpy(priv->mesh_dev->dev_addr,
priv->current_addr, ETH_ALEN);
priv->copied_hwaddr = 1;
}
out:
lbs_deb_leave(LBS_DEB_CMD);
return ret;
}
static int lbs_ret_host_sleep_cfg(struct lbs_private *priv, unsigned long dummy,
struct cmd_header *resp)
{
lbs_deb_enter(LBS_DEB_CMD);
if (priv->is_host_sleep_activated) {
priv->is_host_sleep_configured = 0;
if (priv->psstate == PS_STATE_FULL_POWER) {
priv->is_host_sleep_activated = 0;
wake_up_interruptible(&priv->host_sleep_q);
}
} else {
priv->is_host_sleep_configured = 1;
}
lbs_deb_leave(LBS_DEB_CMD);
return 0;
}
int lbs_host_sleep_cfg(struct lbs_private *priv, uint32_t criteria,
struct wol_config *p_wol_config)
{
struct cmd_ds_host_sleep cmd_config;
int ret;
/*
* Certain firmware versions do not support EHS_REMOVE_WAKEUP command
* and the card will return a failure. Since we need to be
* able to reset the mask, in those cases we set a 0 mask instead.
*/
if (criteria == EHS_REMOVE_WAKEUP && !priv->ehs_remove_supported)
criteria = 0;
cmd_config.hdr.size = cpu_to_le16(sizeof(cmd_config));
cmd_config.criteria = cpu_to_le32(criteria);
cmd_config.gpio = priv->wol_gpio;
cmd_config.gap = priv->wol_gap;
if (p_wol_config != NULL)
memcpy((uint8_t *)&cmd_config.wol_conf, (uint8_t *)p_wol_config,
sizeof(struct wol_config));
else
cmd_config.wol_conf.action = CMD_ACT_ACTION_NONE;
ret = __lbs_cmd(priv, CMD_802_11_HOST_SLEEP_CFG, &cmd_config.hdr,
le16_to_cpu(cmd_config.hdr.size),
lbs_ret_host_sleep_cfg, 0);
if (!ret) {
if (p_wol_config)
memcpy((uint8_t *) p_wol_config,
(uint8_t *)&cmd_config.wol_conf,
sizeof(struct wol_config));
} else {
netdev_info(priv->dev, "HOST_SLEEP_CFG failed %d\n", ret);
}
return ret;
}
EXPORT_SYMBOL_GPL(lbs_host_sleep_cfg);
/**
* lbs_set_ps_mode - Sets the Power Save mode
*
* @priv: A pointer to &struct lbs_private structure
* @cmd_action: The Power Save operation (PS_MODE_ACTION_ENTER_PS or
* PS_MODE_ACTION_EXIT_PS)
* @block: Whether to block on a response or not
*
* returns: 0 on success, error on failure
*/
int lbs_set_ps_mode(struct lbs_private *priv, u16 cmd_action, bool block)
{
struct cmd_ds_802_11_ps_mode cmd;
int ret = 0;
lbs_deb_enter(LBS_DEB_CMD);
memset(&cmd, 0, sizeof(cmd));
cmd.hdr.size = cpu_to_le16(sizeof(cmd));
cmd.action = cpu_to_le16(cmd_action);
if (cmd_action == PS_MODE_ACTION_ENTER_PS) {
lbs_deb_cmd("PS_MODE: action ENTER_PS\n");
cmd.multipledtim = cpu_to_le16(1); /* Default DTIM multiple */
} else if (cmd_action == PS_MODE_ACTION_EXIT_PS) {
lbs_deb_cmd("PS_MODE: action EXIT_PS\n");
} else {
/* We don't handle CONFIRM_SLEEP here because it needs to
* be fastpathed to the firmware.
*/
lbs_deb_cmd("PS_MODE: unknown action 0x%X\n", cmd_action);
ret = -EOPNOTSUPP;
goto out;
}
if (block)
ret = lbs_cmd_with_response(priv, CMD_802_11_PS_MODE, &cmd);
else
lbs_cmd_async(priv, CMD_802_11_PS_MODE, &cmd.hdr, sizeof (cmd));
out:
lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
return ret;
}
int lbs_cmd_802_11_sleep_params(struct lbs_private *priv, uint16_t cmd_action,
struct sleep_params *sp)
{
struct cmd_ds_802_11_sleep_params cmd;
int ret;
lbs_deb_enter(LBS_DEB_CMD);
if (cmd_action == CMD_ACT_GET) {
memset(&cmd, 0, sizeof(cmd));
} else {
cmd.error = cpu_to_le16(sp->sp_error);
cmd.offset = cpu_to_le16(sp->sp_offset);
cmd.stabletime = cpu_to_le16(sp->sp_stabletime);
cmd.calcontrol = sp->sp_calcontrol;
cmd.externalsleepclk = sp->sp_extsleepclk;
cmd.reserved = cpu_to_le16(sp->sp_reserved);
}
cmd.hdr.size = cpu_to_le16(sizeof(cmd));
cmd.action = cpu_to_le16(cmd_action);
ret = lbs_cmd_with_response(priv, CMD_802_11_SLEEP_PARAMS, &cmd);
if (!ret) {
lbs_deb_cmd("error 0x%x, offset 0x%x, stabletime 0x%x, "
"calcontrol 0x%x extsleepclk 0x%x\n",
le16_to_cpu(cmd.error), le16_to_cpu(cmd.offset),
le16_to_cpu(cmd.stabletime), cmd.calcontrol,
cmd.externalsleepclk);
sp->sp_error = le16_to_cpu(cmd.error);
sp->sp_offset = le16_to_cpu(cmd.offset);
sp->sp_stabletime = le16_to_cpu(cmd.stabletime);
sp->sp_calcontrol = cmd.calcontrol;
sp->sp_extsleepclk = cmd.externalsleepclk;
sp->sp_reserved = le16_to_cpu(cmd.reserved);
}
lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
return 0;
}
static int lbs_wait_for_ds_awake(struct lbs_private *priv)
{
int ret = 0;
lbs_deb_enter(LBS_DEB_CMD);
if (priv->is_deep_sleep) {
if (!wait_event_interruptible_timeout(priv->ds_awake_q,
!priv->is_deep_sleep, (10 * HZ))) {
netdev_err(priv->dev, "ds_awake_q: timer expired\n");
ret = -1;
}
}
lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
return ret;
}
int lbs_set_deep_sleep(struct lbs_private *priv, int deep_sleep)
{
int ret = 0;
lbs_deb_enter(LBS_DEB_CMD);
if (deep_sleep) {
if (priv->is_deep_sleep != 1) {
lbs_deb_cmd("deep sleep: sleep\n");
BUG_ON(!priv->enter_deep_sleep);
ret = priv->enter_deep_sleep(priv);
if (!ret) {
netif_stop_queue(priv->dev);
netif_carrier_off(priv->dev);
}
} else {
netdev_err(priv->dev, "deep sleep: already enabled\n");
}
} else {
if (priv->is_deep_sleep) {
lbs_deb_cmd("deep sleep: wakeup\n");
BUG_ON(!priv->exit_deep_sleep);
ret = priv->exit_deep_sleep(priv);
if (!ret) {
ret = lbs_wait_for_ds_awake(priv);
if (ret)
netdev_err(priv->dev,
"deep sleep: wakeup failed\n");
}
}
}
lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
return ret;
}
static int lbs_ret_host_sleep_activate(struct lbs_private *priv,
unsigned long dummy,
struct cmd_header *cmd)
{
lbs_deb_enter(LBS_DEB_FW);
priv->is_host_sleep_activated = 1;
wake_up_interruptible(&priv->host_sleep_q);
lbs_deb_leave(LBS_DEB_FW);
return 0;
}
int lbs_set_host_sleep(struct lbs_private *priv, int host_sleep)
{
struct cmd_header cmd;
int ret = 0;
uint32_t criteria = EHS_REMOVE_WAKEUP;
lbs_deb_enter(LBS_DEB_CMD);
if (host_sleep) {
if (priv->is_host_sleep_activated != 1) {
memset(&cmd, 0, sizeof(cmd));
ret = lbs_host_sleep_cfg(priv, priv->wol_criteria,
(struct wol_config *)NULL);
if (ret) {
netdev_info(priv->dev,
"Host sleep configuration failed: %d\n",
ret);
return ret;
}
if (priv->psstate == PS_STATE_FULL_POWER) {
ret = __lbs_cmd(priv,
CMD_802_11_HOST_SLEEP_ACTIVATE,
&cmd,
sizeof(cmd),
lbs_ret_host_sleep_activate, 0);
if (ret)
netdev_info(priv->dev,
"HOST_SLEEP_ACTIVATE failed: %d\n",
ret);
}
if (!wait_event_interruptible_timeout(
priv->host_sleep_q,
priv->is_host_sleep_activated,
(10 * HZ))) {
netdev_err(priv->dev,
"host_sleep_q: timer expired\n");
ret = -1;
}
} else {
netdev_err(priv->dev, "host sleep: already enabled\n");
}
} else {
if (priv->is_host_sleep_activated)
ret = lbs_host_sleep_cfg(priv, criteria,
(struct wol_config *)NULL);
}
return ret;
}
/**
* lbs_set_snmp_mib - Set an SNMP MIB value
*
* @priv: A pointer to &struct lbs_private structure
* @oid: The OID to set in the firmware
* @val: Value to set the OID to
*
* returns: 0 on success, error on failure
*/
int lbs_set_snmp_mib(struct lbs_private *priv, u32 oid, u16 val)
{
struct cmd_ds_802_11_snmp_mib cmd;
int ret;
lbs_deb_enter(LBS_DEB_CMD);
memset(&cmd, 0, sizeof (cmd));
cmd.hdr.size = cpu_to_le16(sizeof(cmd));
cmd.action = cpu_to_le16(CMD_ACT_SET);
cmd.oid = cpu_to_le16((u16) oid);
switch (oid) {
case SNMP_MIB_OID_BSS_TYPE:
cmd.bufsize = cpu_to_le16(sizeof(u8));
cmd.value[0] = val;
break;
case SNMP_MIB_OID_11D_ENABLE:
case SNMP_MIB_OID_FRAG_THRESHOLD:
case SNMP_MIB_OID_RTS_THRESHOLD:
case SNMP_MIB_OID_SHORT_RETRY_LIMIT:
case SNMP_MIB_OID_LONG_RETRY_LIMIT:
cmd.bufsize = cpu_to_le16(sizeof(u16));
*((__le16 *)(&cmd.value)) = cpu_to_le16(val);
break;
default:
lbs_deb_cmd("SNMP_CMD: (set) unhandled OID 0x%x\n", oid);
ret = -EINVAL;
goto out;
}
lbs_deb_cmd("SNMP_CMD: (set) oid 0x%x, oid size 0x%x, value 0x%x\n",
le16_to_cpu(cmd.oid), le16_to_cpu(cmd.bufsize), val);
ret = lbs_cmd_with_response(priv, CMD_802_11_SNMP_MIB, &cmd);
out:
lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
return ret;
}
/**
* lbs_get_snmp_mib - Get an SNMP MIB value
*
* @priv: A pointer to &struct lbs_private structure
* @oid: The OID to retrieve from the firmware
* @out_val: Location for the returned value
*
* returns: 0 on success, error on failure
*/
int lbs_get_snmp_mib(struct lbs_private *priv, u32 oid, u16 *out_val)
{
struct cmd_ds_802_11_snmp_mib cmd;
int ret;
lbs_deb_enter(LBS_DEB_CMD);
memset(&cmd, 0, sizeof (cmd));
cmd.hdr.size = cpu_to_le16(sizeof(cmd));
cmd.action = cpu_to_le16(CMD_ACT_GET);
cmd.oid = cpu_to_le16(oid);
ret = lbs_cmd_with_response(priv, CMD_802_11_SNMP_MIB, &cmd);
if (ret)
goto out;
switch (le16_to_cpu(cmd.bufsize)) {
case sizeof(u8):
*out_val = cmd.value[0];
break;
case sizeof(u16):
*out_val = le16_to_cpu(*((__le16 *)(&cmd.value)));
break;
default:
lbs_deb_cmd("SNMP_CMD: (get) unhandled OID 0x%x size %d\n",
oid, le16_to_cpu(cmd.bufsize));
break;
}
out:
lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
return ret;
}
/**
* lbs_get_tx_power - Get the min, max, and current TX power
*
* @priv: A pointer to &struct lbs_private structure
* @curlevel: Current power level in dBm
* @minlevel: Minimum supported power level in dBm (optional)
* @maxlevel: Maximum supported power level in dBm (optional)
*
* returns: 0 on success, error on failure
*/
int lbs_get_tx_power(struct lbs_private *priv, s16 *curlevel, s16 *minlevel,
s16 *maxlevel)
{
struct cmd_ds_802_11_rf_tx_power cmd;
int ret;
lbs_deb_enter(LBS_DEB_CMD);
memset(&cmd, 0, sizeof(cmd));
cmd.hdr.size = cpu_to_le16(sizeof(cmd));
cmd.action = cpu_to_le16(CMD_ACT_GET);
ret = lbs_cmd_with_response(priv, CMD_802_11_RF_TX_POWER, &cmd);
if (ret == 0) {
*curlevel = le16_to_cpu(cmd.curlevel);
if (minlevel)
*minlevel = cmd.minlevel;
if (maxlevel)
*maxlevel = cmd.maxlevel;
}
lbs_deb_leave(LBS_DEB_CMD);
return ret;
}
/**
* lbs_set_tx_power - Set the TX power
*
* @priv: A pointer to &struct lbs_private structure
* @dbm: The desired power level in dBm
*
* returns: 0 on success, error on failure
*/
int lbs_set_tx_power(struct lbs_private *priv, s16 dbm)
{
struct cmd_ds_802_11_rf_tx_power cmd;
int ret;
lbs_deb_enter(LBS_DEB_CMD);
memset(&cmd, 0, sizeof(cmd));
cmd.hdr.size = cpu_to_le16(sizeof(cmd));
cmd.action = cpu_to_le16(CMD_ACT_SET);
cmd.curlevel = cpu_to_le16(dbm);
lbs_deb_cmd("SET_RF_TX_POWER: %d dBm\n", dbm);
ret = lbs_cmd_with_response(priv, CMD_802_11_RF_TX_POWER, &cmd);
lbs_deb_leave(LBS_DEB_CMD);
return ret;
}
/**
* lbs_set_monitor_mode - Enable or disable monitor mode
* (only implemented on OLPC usb8388 FW)
*
* @priv: A pointer to &struct lbs_private structure
* @enable: 1 to enable monitor mode, 0 to disable
*
* returns: 0 on success, error on failure
*/
int lbs_set_monitor_mode(struct lbs_private *priv, int enable)
{
struct cmd_ds_802_11_monitor_mode cmd;
int ret;
memset(&cmd, 0, sizeof(cmd));
cmd.hdr.size = cpu_to_le16(sizeof(cmd));
cmd.action = cpu_to_le16(CMD_ACT_SET);
if (enable)
cmd.mode = cpu_to_le16(0x1);
lbs_deb_cmd("SET_MONITOR_MODE: %d\n", enable);
ret = lbs_cmd_with_response(priv, CMD_802_11_MONITOR_MODE, &cmd);
if (ret == 0) {
priv->dev->type = enable ? ARPHRD_IEEE80211_RADIOTAP :
ARPHRD_ETHER;
}
lbs_deb_leave(LBS_DEB_CMD);
return ret;
}
/**
* lbs_get_channel - Get the radio channel
*
* @priv: A pointer to &struct lbs_private structure
*
* returns: The channel on success, error on failure
*/
static int lbs_get_channel(struct lbs_private *priv)
{
struct cmd_ds_802_11_rf_channel cmd;
int ret = 0;
lbs_deb_enter(LBS_DEB_CMD);
memset(&cmd, 0, sizeof(cmd));
cmd.hdr.size = cpu_to_le16(sizeof(cmd));
cmd.action = cpu_to_le16(CMD_OPT_802_11_RF_CHANNEL_GET);
ret = lbs_cmd_with_response(priv, CMD_802_11_RF_CHANNEL, &cmd);
if (ret)
goto out;
ret = le16_to_cpu(cmd.channel);
lbs_deb_cmd("current radio channel is %d\n", ret);
out:
lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
return ret;
}
int lbs_update_channel(struct lbs_private *priv)
{
int ret;
/* the channel in f/w could be out of sync; get the current channel */
lbs_deb_enter(LBS_DEB_ASSOC);
ret = lbs_get_channel(priv);
if (ret > 0) {
priv->channel = ret;
ret = 0;
}
lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
return ret;
}
/**
* lbs_set_channel - Set the radio channel
*
* @priv: A pointer to &struct lbs_private structure
* @channel: The desired channel, or 0 to clear a locked channel
*
* returns: 0 on success, error on failure
*/
int lbs_set_channel(struct lbs_private *priv, u8 channel)
{
struct cmd_ds_802_11_rf_channel cmd;
#ifdef DEBUG
u8 old_channel = priv->channel;
#endif
int ret = 0;
lbs_deb_enter(LBS_DEB_CMD);
memset(&cmd, 0, sizeof(cmd));
cmd.hdr.size = cpu_to_le16(sizeof(cmd));
cmd.action = cpu_to_le16(CMD_OPT_802_11_RF_CHANNEL_SET);
cmd.channel = cpu_to_le16(channel);
ret = lbs_cmd_with_response(priv, CMD_802_11_RF_CHANNEL, &cmd);
if (ret)
goto out;
priv->channel = (uint8_t) le16_to_cpu(cmd.channel);
lbs_deb_cmd("channel switch from %d to %d\n", old_channel,
priv->channel);
out:
lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
return ret;
}
/**
* lbs_get_rssi - Get current RSSI and noise floor
*
* @priv: A pointer to &struct lbs_private structure
* @rssi: On successful return, signal level in mBm
* @nf: On successful return, Noise floor
*
* returns: The channel on success, error on failure
*/
int lbs_get_rssi(struct lbs_private *priv, s8 *rssi, s8 *nf)
{
struct cmd_ds_802_11_rssi cmd;
int ret = 0;
lbs_deb_enter(LBS_DEB_CMD);
BUG_ON(rssi == NULL);
BUG_ON(nf == NULL);
memset(&cmd, 0, sizeof(cmd));
cmd.hdr.size = cpu_to_le16(sizeof(cmd));
/* Average SNR over last 8 beacons */
cmd.n_or_snr = cpu_to_le16(8);
ret = lbs_cmd_with_response(priv, CMD_802_11_RSSI, &cmd);
if (ret == 0) {
*nf = CAL_NF(le16_to_cpu(cmd.nf));
*rssi = CAL_RSSI(le16_to_cpu(cmd.n_or_snr), le16_to_cpu(cmd.nf));
}
lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
return ret;
}
/**
* lbs_set_11d_domain_info - Send regulatory and 802.11d domain information
* to the firmware
*
* @priv: pointer to &struct lbs_private
*
* returns: 0 on success, error code on failure
*/
int lbs_set_11d_domain_info(struct lbs_private *priv)
{
struct wiphy *wiphy = priv->wdev->wiphy;
struct ieee80211_supported_band **bands = wiphy->bands;
struct cmd_ds_802_11d_domain_info cmd;
struct mrvl_ie_domain_param_set *domain = &cmd.domain;
struct ieee80211_country_ie_triplet *t;
enum ieee80211_band band;
struct ieee80211_channel *ch;
u8 num_triplet = 0;
u8 num_parsed_chan = 0;
u8 first_channel = 0, next_chan = 0, max_pwr = 0;
u8 i, flag = 0;
size_t triplet_size;
int ret = 0;
lbs_deb_enter(LBS_DEB_11D);
if (!priv->country_code[0])
goto out;
memset(&cmd, 0, sizeof(cmd));
cmd.action = cpu_to_le16(CMD_ACT_SET);
lbs_deb_11d("Setting country code '%c%c'\n",
priv->country_code[0], priv->country_code[1]);
domain->header.type = cpu_to_le16(TLV_TYPE_DOMAIN);
/* Set country code */
domain->country_code[0] = priv->country_code[0];
domain->country_code[1] = priv->country_code[1];
domain->country_code[2] = ' ';
/* Now set up the channel triplets; firmware is somewhat picky here
* and doesn't validate channel numbers and spans; hence it would
* interpret a triplet of (36, 4, 20) as channels 36, 37, 38, 39. Since
* the last 3 aren't valid channels, the driver is responsible for
* splitting that up into 4 triplet pairs of (36, 1, 20) + (40, 1, 20)
* etc.
*/
for (band = 0;
(band < IEEE80211_NUM_BANDS) && (num_triplet < MAX_11D_TRIPLETS);
band++) {
if (!bands[band])
continue;
for (i = 0;
(i < bands[band]->n_channels) && (num_triplet < MAX_11D_TRIPLETS);
i++) {
ch = &bands[band]->channels[i];
if (ch->flags & IEEE80211_CHAN_DISABLED)
continue;
if (!flag) {
flag = 1;
next_chan = first_channel = (u32) ch->hw_value;
max_pwr = ch->max_power;
num_parsed_chan = 1;
continue;
}
if ((ch->hw_value == next_chan + 1) &&
(ch->max_power == max_pwr)) {
/* Consolidate adjacent channels */
next_chan++;
num_parsed_chan++;
} else {
/* Add this triplet */
lbs_deb_11d("11D triplet (%d, %d, %d)\n",
first_channel, num_parsed_chan,
max_pwr);
t = &domain->triplet[num_triplet];
t->chans.first_channel = first_channel;
t->chans.num_channels = num_parsed_chan;
t->chans.max_power = max_pwr;
num_triplet++;
flag = 0;
}
}
if (flag) {
/* Add last triplet */
lbs_deb_11d("11D triplet (%d, %d, %d)\n", first_channel,
num_parsed_chan, max_pwr);
t = &domain->triplet[num_triplet];
t->chans.first_channel = first_channel;
t->chans.num_channels = num_parsed_chan;
t->chans.max_power = max_pwr;
num_triplet++;
}
}
lbs_deb_11d("# triplets %d\n", num_triplet);
/* Set command header sizes */
triplet_size = num_triplet * sizeof(struct ieee80211_country_ie_triplet);
domain->header.len = cpu_to_le16(sizeof(domain->country_code) +
triplet_size);
lbs_deb_hex(LBS_DEB_11D, "802.11D domain param set",
(u8 *) &cmd.domain.country_code,
le16_to_cpu(domain->header.len));
cmd.hdr.size = cpu_to_le16(sizeof(cmd.hdr) +
sizeof(cmd.action) +
sizeof(cmd.domain.header) +
sizeof(cmd.domain.country_code) +
triplet_size);
ret = lbs_cmd_with_response(priv, CMD_802_11D_DOMAIN_INFO, &cmd);
out:
lbs_deb_leave_args(LBS_DEB_11D, "ret %d", ret);
return ret;
}
/**
* lbs_get_reg - Read a MAC, Baseband, or RF register
*
* @priv: pointer to &struct lbs_private
* @reg: register command, one of CMD_MAC_REG_ACCESS,
* CMD_BBP_REG_ACCESS, or CMD_RF_REG_ACCESS
* @offset: byte offset of the register to get
* @value: on success, the value of the register at 'offset'
*
* returns: 0 on success, error code on failure
*/
int lbs_get_reg(struct lbs_private *priv, u16 reg, u16 offset, u32 *value)
{
struct cmd_ds_reg_access cmd;
int ret = 0;
lbs_deb_enter(LBS_DEB_CMD);
BUG_ON(value == NULL);
memset(&cmd, 0, sizeof(cmd));
cmd.hdr.size = cpu_to_le16(sizeof(cmd));
cmd.action = cpu_to_le16(CMD_ACT_GET);
cmd.offset = cpu_to_le16(offset);
if (reg != CMD_MAC_REG_ACCESS &&
reg != CMD_BBP_REG_ACCESS &&
reg != CMD_RF_REG_ACCESS) {
ret = -EINVAL;
goto out;
}
ret = lbs_cmd_with_response(priv, reg, &cmd);
if (!ret) {
if (reg == CMD_BBP_REG_ACCESS || reg == CMD_RF_REG_ACCESS)
*value = cmd.value.bbp_rf;
else if (reg == CMD_MAC_REG_ACCESS)
*value = le32_to_cpu(cmd.value.mac);
}
out:
lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
return ret;
}
/**
* lbs_set_reg - Write a MAC, Baseband, or RF register
*
* @priv: pointer to &struct lbs_private
* @reg: register command, one of CMD_MAC_REG_ACCESS,
* CMD_BBP_REG_ACCESS, or CMD_RF_REG_ACCESS
* @offset: byte offset of the register to set
* @value: the value to write to the register at 'offset'
*
* returns: 0 on success, error code on failure
*/
int lbs_set_reg(struct lbs_private *priv, u16 reg, u16 offset, u32 value)
{
struct cmd_ds_reg_access cmd;
int ret = 0;
lbs_deb_enter(LBS_DEB_CMD);
memset(&cmd, 0, sizeof(cmd));
cmd.hdr.size = cpu_to_le16(sizeof(cmd));
cmd.action = cpu_to_le16(CMD_ACT_SET);
cmd.offset = cpu_to_le16(offset);
if (reg == CMD_BBP_REG_ACCESS || reg == CMD_RF_REG_ACCESS)
cmd.value.bbp_rf = (u8) (value & 0xFF);
else if (reg == CMD_MAC_REG_ACCESS)
cmd.value.mac = cpu_to_le32(value);
else {
ret = -EINVAL;
goto out;
}
ret = lbs_cmd_with_response(priv, reg, &cmd);
out:
lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
return ret;
}
static void lbs_queue_cmd(struct lbs_private *priv,
struct cmd_ctrl_node *cmdnode)
{
unsigned long flags;
int addtail = 1;
lbs_deb_enter(LBS_DEB_HOST);
if (!cmdnode) {
lbs_deb_host("QUEUE_CMD: cmdnode is NULL\n");
goto done;
}
if (!cmdnode->cmdbuf->size) {
lbs_deb_host("DNLD_CMD: cmd size is zero\n");
goto done;
}
cmdnode->result = 0;
/* Exit_PS command needs to be queued in the header always. */
if (le16_to_cpu(cmdnode->cmdbuf->command) == CMD_802_11_PS_MODE) {
struct cmd_ds_802_11_ps_mode *psm = (void *) &cmdnode->cmdbuf;
if (psm->action == cpu_to_le16(PS_MODE_ACTION_EXIT_PS)) {
if (priv->psstate != PS_STATE_FULL_POWER)
addtail = 0;
}
}
if (le16_to_cpu(cmdnode->cmdbuf->command) == CMD_802_11_WAKEUP_CONFIRM)
addtail = 0;
spin_lock_irqsave(&priv->driver_lock, flags);
if (addtail)
list_add_tail(&cmdnode->list, &priv->cmdpendingq);
else
list_add(&cmdnode->list, &priv->cmdpendingq);
spin_unlock_irqrestore(&priv->driver_lock, flags);
lbs_deb_host("QUEUE_CMD: inserted command 0x%04x into cmdpendingq\n",
le16_to_cpu(cmdnode->cmdbuf->command));
done:
lbs_deb_leave(LBS_DEB_HOST);
}
static void lbs_submit_command(struct lbs_private *priv,
struct cmd_ctrl_node *cmdnode)
{
unsigned long flags;
struct cmd_header *cmd;
uint16_t cmdsize;
uint16_t command;
int timeo = 3 * HZ;
int ret;
lbs_deb_enter(LBS_DEB_HOST);
cmd = cmdnode->cmdbuf;
spin_lock_irqsave(&priv->driver_lock, flags);
priv->seqnum++;
cmd->seqnum = cpu_to_le16(priv->seqnum);
priv->cur_cmd = cmdnode;
spin_unlock_irqrestore(&priv->driver_lock, flags);
cmdsize = le16_to_cpu(cmd->size);
command = le16_to_cpu(cmd->command);
/* These commands take longer */
if (command == CMD_802_11_SCAN || command == CMD_802_11_ASSOCIATE)
timeo = 5 * HZ;
lbs_deb_cmd("DNLD_CMD: command 0x%04x, seq %d, size %d\n",
command, le16_to_cpu(cmd->seqnum), cmdsize);
lbs_deb_hex(LBS_DEB_CMD, "DNLD_CMD", (void *) cmdnode->cmdbuf, cmdsize);
ret = priv->hw_host_to_card(priv, MVMS_CMD, (u8 *) cmd, cmdsize);
if (ret) {
netdev_info(priv->dev, "DNLD_CMD: hw_host_to_card failed: %d\n",
ret);
/* Reset dnld state machine, report failure */
priv->dnld_sent = DNLD_RES_RECEIVED;
lbs_complete_command(priv, cmdnode, ret);
}
if (command == CMD_802_11_DEEP_SLEEP) {
if (priv->is_auto_deep_sleep_enabled) {
priv->wakeup_dev_required = 1;
priv->dnld_sent = 0;
}
priv->is_deep_sleep = 1;
lbs_complete_command(priv, cmdnode, 0);
} else {
/* Setup the timer after transmit command */
mod_timer(&priv->command_timer, jiffies + timeo);
}
lbs_deb_leave(LBS_DEB_HOST);
}
/*
* This function inserts command node to cmdfreeq
* after cleans it. Requires priv->driver_lock held.
*/
static void __lbs_cleanup_and_insert_cmd(struct lbs_private *priv,
struct cmd_ctrl_node *cmdnode)
{
lbs_deb_enter(LBS_DEB_HOST);
if (!cmdnode)
goto out;
cmdnode->callback = NULL;
cmdnode->callback_arg = 0;
memset(cmdnode->cmdbuf, 0, LBS_CMD_BUFFER_SIZE);
list_add_tail(&cmdnode->list, &priv->cmdfreeq);
out:
lbs_deb_leave(LBS_DEB_HOST);
}
static void lbs_cleanup_and_insert_cmd(struct lbs_private *priv,
struct cmd_ctrl_node *ptempcmd)
{
unsigned long flags;
spin_lock_irqsave(&priv->driver_lock, flags);
__lbs_cleanup_and_insert_cmd(priv, ptempcmd);
spin_unlock_irqrestore(&priv->driver_lock, flags);
}
void __lbs_complete_command(struct lbs_private *priv, struct cmd_ctrl_node *cmd,
int result)
{
/*
* Normally, commands are removed from cmdpendingq before being
* submitted. However, we can arrive here on alternative codepaths
* where the command is still pending. Make sure the command really
* isn't part of a list at this point.
*/
list_del_init(&cmd->list);
cmd->result = result;
cmd->cmdwaitqwoken = 1;
wake_up(&cmd->cmdwait_q);
if (!cmd->callback || cmd->callback == lbs_cmd_async_callback)
__lbs_cleanup_and_insert_cmd(priv, cmd);
priv->cur_cmd = NULL;
wake_up(&priv->waitq);
}
void lbs_complete_command(struct lbs_private *priv, struct cmd_ctrl_node *cmd,
int result)
{
unsigned long flags;
spin_lock_irqsave(&priv->driver_lock, flags);
__lbs_complete_command(priv, cmd, result);
spin_unlock_irqrestore(&priv->driver_lock, flags);
}
int lbs_set_radio(struct lbs_private *priv, u8 preamble, u8 radio_on)
{
struct cmd_ds_802_11_radio_control cmd;
int ret = -EINVAL;
lbs_deb_enter(LBS_DEB_CMD);
cmd.hdr.size = cpu_to_le16(sizeof(cmd));
cmd.action = cpu_to_le16(CMD_ACT_SET);
/* Only v8 and below support setting the preamble */
if (priv->fwrelease < 0x09000000) {
switch (preamble) {
case RADIO_PREAMBLE_SHORT:
case RADIO_PREAMBLE_AUTO:
case RADIO_PREAMBLE_LONG:
cmd.control = cpu_to_le16(preamble);
break;
default:
goto out;
}
}
if (radio_on)
cmd.control |= cpu_to_le16(0x1);
else {
cmd.control &= cpu_to_le16(~0x1);
priv->txpower_cur = 0;
}
lbs_deb_cmd("RADIO_CONTROL: radio %s, preamble %d\n",
radio_on ? "ON" : "OFF", preamble);
priv->radio_on = radio_on;
ret = lbs_cmd_with_response(priv, CMD_802_11_RADIO_CONTROL, &cmd);
out:
lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
return ret;
}
void lbs_set_mac_control(struct lbs_private *priv)
{
struct cmd_ds_mac_control cmd;
lbs_deb_enter(LBS_DEB_CMD);
cmd.hdr.size = cpu_to_le16(sizeof(cmd));
cmd.action = cpu_to_le16(priv->mac_control);
cmd.reserved = 0;
lbs_cmd_async(priv, CMD_MAC_CONTROL, &cmd.hdr, sizeof(cmd));
lbs_deb_leave(LBS_DEB_CMD);
}
int lbs_set_mac_control_sync(struct lbs_private *priv)
{
struct cmd_ds_mac_control cmd;
int ret = 0;
lbs_deb_enter(LBS_DEB_CMD);
cmd.hdr.size = cpu_to_le16(sizeof(cmd));
cmd.action = cpu_to_le16(priv->mac_control);
cmd.reserved = 0;
ret = lbs_cmd_with_response(priv, CMD_MAC_CONTROL, &cmd);
lbs_deb_leave(LBS_DEB_CMD);
return ret;
}
/**
* lbs_allocate_cmd_buffer - allocates the command buffer and links
* it to command free queue
*
* @priv: A pointer to &struct lbs_private structure
*
* returns: 0 for success or -1 on error
*/
int lbs_allocate_cmd_buffer(struct lbs_private *priv)
{
int ret = 0;
u32 bufsize;
u32 i;
struct cmd_ctrl_node *cmdarray;
lbs_deb_enter(LBS_DEB_HOST);
/* Allocate and initialize the command array */
bufsize = sizeof(struct cmd_ctrl_node) * LBS_NUM_CMD_BUFFERS;
if (!(cmdarray = kzalloc(bufsize, GFP_KERNEL))) {
lbs_deb_host("ALLOC_CMD_BUF: tempcmd_array is NULL\n");
ret = -1;
goto done;
}
priv->cmd_array = cmdarray;
/* Allocate and initialize each command buffer in the command array */
for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) {
cmdarray[i].cmdbuf = kzalloc(LBS_CMD_BUFFER_SIZE, GFP_KERNEL);
if (!cmdarray[i].cmdbuf) {
lbs_deb_host("ALLOC_CMD_BUF: ptempvirtualaddr is NULL\n");
ret = -1;
goto done;
}
}
for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) {
init_waitqueue_head(&cmdarray[i].cmdwait_q);
lbs_cleanup_and_insert_cmd(priv, &cmdarray[i]);
}
ret = 0;
done:
lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
return ret;
}
/**
* lbs_free_cmd_buffer - free the command buffer
*
* @priv: A pointer to &struct lbs_private structure
*
* returns: 0 for success
*/
int lbs_free_cmd_buffer(struct lbs_private *priv)
{
struct cmd_ctrl_node *cmdarray;
unsigned int i;
lbs_deb_enter(LBS_DEB_HOST);
/* need to check if cmd array is allocated or not */
if (priv->cmd_array == NULL) {
lbs_deb_host("FREE_CMD_BUF: cmd_array is NULL\n");
goto done;
}
cmdarray = priv->cmd_array;
/* Release shared memory buffers */
for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) {
if (cmdarray[i].cmdbuf) {
kfree(cmdarray[i].cmdbuf);
cmdarray[i].cmdbuf = NULL;
}
}
/* Release cmd_ctrl_node */
if (priv->cmd_array) {
kfree(priv->cmd_array);
priv->cmd_array = NULL;
}
done:
lbs_deb_leave(LBS_DEB_HOST);
return 0;
}
/**
* lbs_get_free_cmd_node - gets a free command node if available in
* command free queue
*
* @priv: A pointer to &struct lbs_private structure
*
* returns: A pointer to &cmd_ctrl_node structure on success
* or %NULL on error
*/
static struct cmd_ctrl_node *lbs_get_free_cmd_node(struct lbs_private *priv)
{
struct cmd_ctrl_node *tempnode;
unsigned long flags;
lbs_deb_enter(LBS_DEB_HOST);
if (!priv)
return NULL;
spin_lock_irqsave(&priv->driver_lock, flags);
if (!list_empty(&priv->cmdfreeq)) {
tempnode = list_first_entry(&priv->cmdfreeq,
struct cmd_ctrl_node, list);
list_del_init(&tempnode->list);
} else {
lbs_deb_host("GET_CMD_NODE: cmd_ctrl_node is not available\n");
tempnode = NULL;
}
spin_unlock_irqrestore(&priv->driver_lock, flags);
lbs_deb_leave(LBS_DEB_HOST);
return tempnode;
}
/**
* lbs_execute_next_command - execute next command in command
* pending queue. Will put firmware back to PS mode if applicable.
*
* @priv: A pointer to &struct lbs_private structure
*
* returns: 0 on success or -1 on error
*/
int lbs_execute_next_command(struct lbs_private *priv)
{
struct cmd_ctrl_node *cmdnode = NULL;
struct cmd_header *cmd;
unsigned long flags;
int ret = 0;
/* Debug group is LBS_DEB_THREAD and not LBS_DEB_HOST, because the
* only caller to us is lbs_thread() and we get even when a
* data packet is received */
lbs_deb_enter(LBS_DEB_THREAD);
spin_lock_irqsave(&priv->driver_lock, flags);
if (priv->cur_cmd) {
netdev_alert(priv->dev,
"EXEC_NEXT_CMD: already processing command!\n");
spin_unlock_irqrestore(&priv->driver_lock, flags);
ret = -1;
goto done;
}
if (!list_empty(&priv->cmdpendingq)) {
cmdnode = list_first_entry(&priv->cmdpendingq,
struct cmd_ctrl_node, list);
}
spin_unlock_irqrestore(&priv->driver_lock, flags);
if (cmdnode) {
cmd = cmdnode->cmdbuf;
if (is_command_allowed_in_ps(le16_to_cpu(cmd->command))) {
if ((priv->psstate == PS_STATE_SLEEP) ||
(priv->psstate == PS_STATE_PRE_SLEEP)) {
lbs_deb_host(
"EXEC_NEXT_CMD: cannot send cmd 0x%04x in psstate %d\n",
le16_to_cpu(cmd->command),
priv->psstate);
ret = -1;
goto done;
}
lbs_deb_host("EXEC_NEXT_CMD: OK to send command "
"0x%04x in psstate %d\n",
le16_to_cpu(cmd->command), priv->psstate);
} else if (priv->psstate != PS_STATE_FULL_POWER) {
/*
* 1. Non-PS command:
* Queue it. set needtowakeup to TRUE if current state
* is SLEEP, otherwise call send EXIT_PS.
* 2. PS command but not EXIT_PS:
* Ignore it.
* 3. PS command EXIT_PS:
* Set needtowakeup to TRUE if current state is SLEEP,
* otherwise send this command down to firmware
* immediately.
*/
if (cmd->command != cpu_to_le16(CMD_802_11_PS_MODE)) {
/* Prepare to send Exit PS,
* this non PS command will be sent later */
if ((priv->psstate == PS_STATE_SLEEP)
|| (priv->psstate == PS_STATE_PRE_SLEEP)
) {
/* w/ new scheme, it will not reach here.
since it is blocked in main_thread. */
priv->needtowakeup = 1;
} else {
lbs_set_ps_mode(priv,
PS_MODE_ACTION_EXIT_PS,
false);
}
ret = 0;
goto done;
} else {
/*
* PS command. Ignore it if it is not Exit_PS.
* otherwise send it down immediately.
*/
struct cmd_ds_802_11_ps_mode *psm = (void *)&cmd[1];
lbs_deb_host(
"EXEC_NEXT_CMD: PS cmd, action 0x%02x\n",
psm->action);
if (psm->action !=
cpu_to_le16(PS_MODE_ACTION_EXIT_PS)) {
lbs_deb_host(
"EXEC_NEXT_CMD: ignore ENTER_PS cmd\n");
lbs_complete_command(priv, cmdnode, 0);
ret = 0;
goto done;
}
if ((priv->psstate == PS_STATE_SLEEP) ||
(priv->psstate == PS_STATE_PRE_SLEEP)) {
lbs_deb_host(
"EXEC_NEXT_CMD: ignore EXIT_PS cmd in sleep\n");
lbs_complete_command(priv, cmdnode, 0);
priv->needtowakeup = 1;
ret = 0;
goto done;
}
lbs_deb_host(
"EXEC_NEXT_CMD: sending EXIT_PS\n");
}
}
spin_lock_irqsave(&priv->driver_lock, flags);
list_del_init(&cmdnode->list);
spin_unlock_irqrestore(&priv->driver_lock, flags);
lbs_deb_host("EXEC_NEXT_CMD: sending command 0x%04x\n",
le16_to_cpu(cmd->command));
lbs_submit_command(priv, cmdnode);
} else {
/*
* check if in power save mode, if yes, put the device back
* to PS mode
*/
#ifdef TODO
/*
* This was the old code for libertas+wext. Someone that
* understands this beast should re-code it in a sane way.
*
* I actually don't understand why this is related to WPA
* and to connection status, shouldn't powering should be
* independ of such things?
*/
if ((priv->psmode != LBS802_11POWERMODECAM) &&
(priv->psstate == PS_STATE_FULL_POWER) &&
((priv->connect_status == LBS_CONNECTED) ||
lbs_mesh_connected(priv))) {
if (priv->secinfo.WPAenabled ||
priv->secinfo.WPA2enabled) {
/* check for valid WPA group keys */
if (priv->wpa_mcast_key.len ||
priv->wpa_unicast_key.len) {
lbs_deb_host(
"EXEC_NEXT_CMD: WPA enabled and GTK_SET"
" go back to PS_SLEEP");
lbs_set_ps_mode(priv,
PS_MODE_ACTION_ENTER_PS,
false);
}
} else {
lbs_deb_host(
"EXEC_NEXT_CMD: cmdpendingq empty, "
"go back to PS_SLEEP");
lbs_set_ps_mode(priv, PS_MODE_ACTION_ENTER_PS,
false);
}
}
#endif
}
ret = 0;
done:
lbs_deb_leave(LBS_DEB_THREAD);
return ret;
}
static void lbs_send_confirmsleep(struct lbs_private *priv)
{
unsigned long flags;
int ret;
lbs_deb_enter(LBS_DEB_HOST);
lbs_deb_hex(LBS_DEB_HOST, "sleep confirm", (u8 *) &confirm_sleep,
sizeof(confirm_sleep));
ret = priv->hw_host_to_card(priv, MVMS_CMD, (u8 *) &confirm_sleep,
sizeof(confirm_sleep));
if (ret) {
netdev_alert(priv->dev, "confirm_sleep failed\n");
goto out;
}
spin_lock_irqsave(&priv->driver_lock, flags);
/* We don't get a response on the sleep-confirmation */
priv->dnld_sent = DNLD_RES_RECEIVED;
if (priv->is_host_sleep_configured) {
priv->is_host_sleep_activated = 1;
wake_up_interruptible(&priv->host_sleep_q);
}
/* If nothing to do, go back to sleep (?) */
if (!kfifo_len(&priv->event_fifo) && !priv->resp_len[priv->resp_idx])
priv->psstate = PS_STATE_SLEEP;
spin_unlock_irqrestore(&priv->driver_lock, flags);
out:
lbs_deb_leave(LBS_DEB_HOST);
}
/**
* lbs_ps_confirm_sleep - checks condition and prepares to
* send sleep confirm command to firmware if ok
*
* @priv: A pointer to &struct lbs_private structure
*
* returns: n/a
*/
void lbs_ps_confirm_sleep(struct lbs_private *priv)
{
unsigned long flags =0;
int allowed = 1;
lbs_deb_enter(LBS_DEB_HOST);
spin_lock_irqsave(&priv->driver_lock, flags);
if (priv->dnld_sent) {
allowed = 0;
lbs_deb_host("dnld_sent was set\n");
}
/* In-progress command? */
if (priv->cur_cmd) {
allowed = 0;
lbs_deb_host("cur_cmd was set\n");
}
/* Pending events or command responses? */
if (kfifo_len(&priv->event_fifo) || priv->resp_len[priv->resp_idx]) {
allowed = 0;
lbs_deb_host("pending events or command responses\n");
}
spin_unlock_irqrestore(&priv->driver_lock, flags);
if (allowed) {
lbs_deb_host("sending lbs_ps_confirm_sleep\n");
lbs_send_confirmsleep(priv);
} else {
lbs_deb_host("sleep confirm has been delayed\n");
}
lbs_deb_leave(LBS_DEB_HOST);
}
/**
* lbs_set_tpc_cfg - Configures the transmission power control functionality
*
* @priv: A pointer to &struct lbs_private structure
* @enable: Transmission power control enable
* @p0: Power level when link quality is good (dBm).
* @p1: Power level when link quality is fair (dBm).
* @p2: Power level when link quality is poor (dBm).
* @usesnr: Use Signal to Noise Ratio in TPC
*
* returns: 0 on success
*/
int lbs_set_tpc_cfg(struct lbs_private *priv, int enable, int8_t p0, int8_t p1,
int8_t p2, int usesnr)
{
struct cmd_ds_802_11_tpc_cfg cmd;
int ret;
memset(&cmd, 0, sizeof(cmd));
cmd.hdr.size = cpu_to_le16(sizeof(cmd));
cmd.action = cpu_to_le16(CMD_ACT_SET);
cmd.enable = !!enable;
cmd.usesnr = !!usesnr;
cmd.P0 = p0;
cmd.P1 = p1;
cmd.P2 = p2;
ret = lbs_cmd_with_response(priv, CMD_802_11_TPC_CFG, &cmd);
return ret;
}
/**
* lbs_set_power_adapt_cfg - Configures the power adaptation settings
*
* @priv: A pointer to &struct lbs_private structure
* @enable: Power adaptation enable
* @p0: Power level for 1, 2, 5.5 and 11 Mbps (dBm).
* @p1: Power level for 6, 9, 12, 18, 22, 24 and 36 Mbps (dBm).
* @p2: Power level for 48 and 54 Mbps (dBm).
*
* returns: 0 on Success
*/
int lbs_set_power_adapt_cfg(struct lbs_private *priv, int enable, int8_t p0,
int8_t p1, int8_t p2)
{
struct cmd_ds_802_11_pa_cfg cmd;
int ret;
memset(&cmd, 0, sizeof(cmd));
cmd.hdr.size = cpu_to_le16(sizeof(cmd));
cmd.action = cpu_to_le16(CMD_ACT_SET);
cmd.enable = !!enable;
cmd.P0 = p0;
cmd.P1 = p1;
cmd.P2 = p2;
ret = lbs_cmd_with_response(priv, CMD_802_11_PA_CFG , &cmd);
return ret;
}
struct cmd_ctrl_node *__lbs_cmd_async(struct lbs_private *priv,
uint16_t command, struct cmd_header *in_cmd, int in_cmd_size,
int (*callback)(struct lbs_private *, unsigned long, struct cmd_header *),
unsigned long callback_arg)
{
struct cmd_ctrl_node *cmdnode;
lbs_deb_enter(LBS_DEB_HOST);
if (priv->surpriseremoved) {
lbs_deb_host("PREP_CMD: card removed\n");
cmdnode = ERR_PTR(-ENOENT);
goto done;
}
/* No commands are allowed in Deep Sleep until we toggle the GPIO
* to wake up the card and it has signaled that it's ready.
*/
if (!priv->is_auto_deep_sleep_enabled) {
if (priv->is_deep_sleep) {
lbs_deb_cmd("command not allowed in deep sleep\n");
cmdnode = ERR_PTR(-EBUSY);
goto done;
}
}
cmdnode = lbs_get_free_cmd_node(priv);
if (cmdnode == NULL) {
lbs_deb_host("PREP_CMD: cmdnode is NULL\n");
/* Wake up main thread to execute next command */
wake_up(&priv->waitq);
cmdnode = ERR_PTR(-ENOBUFS);
goto done;
}
cmdnode->callback = callback;
cmdnode->callback_arg = callback_arg;
/* Copy the incoming command to the buffer */
memcpy(cmdnode->cmdbuf, in_cmd, in_cmd_size);
/* Set command, clean result, move to buffer */
cmdnode->cmdbuf->command = cpu_to_le16(command);
cmdnode->cmdbuf->size = cpu_to_le16(in_cmd_size);
cmdnode->cmdbuf->result = 0;
lbs_deb_host("PREP_CMD: command 0x%04x\n", command);
cmdnode->cmdwaitqwoken = 0;
lbs_queue_cmd(priv, cmdnode);
wake_up(&priv->waitq);
done:
lbs_deb_leave_args(LBS_DEB_HOST, "ret %p", cmdnode);
return cmdnode;
}
void lbs_cmd_async(struct lbs_private *priv, uint16_t command,
struct cmd_header *in_cmd, int in_cmd_size)
{
lbs_deb_enter(LBS_DEB_CMD);
__lbs_cmd_async(priv, command, in_cmd, in_cmd_size,
lbs_cmd_async_callback, 0);
lbs_deb_leave(LBS_DEB_CMD);
}
int __lbs_cmd(struct lbs_private *priv, uint16_t command,
struct cmd_header *in_cmd, int in_cmd_size,
int (*callback)(struct lbs_private *, unsigned long, struct cmd_header *),
unsigned long callback_arg)
{
struct cmd_ctrl_node *cmdnode;
unsigned long flags;
int ret = 0;
lbs_deb_enter(LBS_DEB_HOST);
cmdnode = __lbs_cmd_async(priv, command, in_cmd, in_cmd_size,
callback, callback_arg);
if (IS_ERR(cmdnode)) {
ret = PTR_ERR(cmdnode);
goto done;
}
might_sleep();
/*
* Be careful with signals here. A signal may be received as the system
* goes into suspend or resume. We do not want this to interrupt the
* command, so we perform an uninterruptible sleep.
*/
wait_event(cmdnode->cmdwait_q, cmdnode->cmdwaitqwoken);
spin_lock_irqsave(&priv->driver_lock, flags);
ret = cmdnode->result;
if (ret)
netdev_info(priv->dev, "PREP_CMD: command 0x%04x failed: %d\n",
command, ret);
__lbs_cleanup_and_insert_cmd(priv, cmdnode);
spin_unlock_irqrestore(&priv->driver_lock, flags);
done:
lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
return ret;
}
EXPORT_SYMBOL_GPL(__lbs_cmd);