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linux/drivers/net/wireless/libertas/cmd.c

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/**
* This file contains the handling of command.
* It prepares command and sends it to firmware when it is ready.
*/
#include <net/iw_handler.h>
#include <net/lib80211.h>
#include <linux/kfifo.h>
#include "host.h"
#include "hostcmd.h"
#include "decl.h"
#include "defs.h"
#include "dev.h"
#include "assoc.h"
#include "wext.h"
#include "cmd.h"
static struct cmd_ctrl_node *lbs_get_cmd_ctrl_node(struct lbs_private *priv);
/**
* @brief Simple callback that copies response back into command
*
* @param priv A pointer to struct lbs_private structure
* @param extra A pointer to the original command structure for which
* 'resp' is a response
* @param resp A pointer to the command response
*
* @return 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);
/**
* @brief 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.
*
* @param priv ignored
* @param extra ignored
* @param resp ignored
*
* @return 0 for success
*/
static int lbs_cmd_async_callback(struct lbs_private *priv, unsigned long extra,
struct cmd_header *resp)
{
return 0;
}
/**
* @brief Checks whether a command is allowed in Power Save mode
*
* @param command the command ID
* @return 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;
default:
break;
}
return 0;
}
/**
* @brief Updates the hardware details like MAC address and regulatory region
*
* @param priv A pointer to struct lbs_private structure
*
* @return 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
*/
lbs_pr_info("%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.
*/
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;
lbs_pr_info("unidentified region code; using the default (USA)\n");
}
if (priv->current_addr[0] == 0xff)
memmove(priv->current_addr, cmd.permanentaddr, ETH_ALEN);
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);
if (lbs_set_regiontable(priv, priv->regioncode, 0)) {
ret = -1;
goto out;
}
if (lbs_set_universaltable(priv, 0)) {
ret = -1;
goto out;
}
out:
lbs_deb_leave(LBS_DEB_CMD);
return ret;
}
int lbs_host_sleep_cfg(struct lbs_private *priv, uint32_t criteria)
{
struct cmd_ds_host_sleep cmd_config;
int ret;
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;
ret = lbs_cmd_with_response(priv, CMD_802_11_HOST_SLEEP_CFG, &cmd_config);
if (!ret) {
lbs_deb_cmd("Set WOL criteria to %x\n", criteria);
priv->wol_criteria = criteria;
} else {
lbs_pr_info("HOST_SLEEP_CFG failed %d\n", ret);
}
return ret;
}
EXPORT_SYMBOL_GPL(lbs_host_sleep_cfg);
static int lbs_cmd_802_11_ps_mode(struct cmd_ds_command *cmd,
u16 cmd_action)
{
struct cmd_ds_802_11_ps_mode *psm = &cmd->params.psmode;
lbs_deb_enter(LBS_DEB_CMD);
cmd->command = cpu_to_le16(CMD_802_11_PS_MODE);
cmd->size = cpu_to_le16(sizeof(struct cmd_ds_802_11_ps_mode) +
S_DS_GEN);
psm->action = cpu_to_le16(cmd_action);
psm->multipledtim = 0;
switch (cmd_action) {
case CMD_SUBCMD_ENTER_PS:
lbs_deb_cmd("PS command:" "SubCode- Enter PS\n");
psm->locallisteninterval = 0;
psm->nullpktinterval = 0;
psm->multipledtim =
cpu_to_le16(MRVDRV_DEFAULT_MULTIPLE_DTIM);
break;
case CMD_SUBCMD_EXIT_PS:
lbs_deb_cmd("PS command:" "SubCode- Exit PS\n");
break;
case CMD_SUBCMD_SLEEP_CONFIRMED:
lbs_deb_cmd("PS command: SubCode- sleep confirm\n");
break;
default:
break;
}
lbs_deb_leave(LBS_DEB_CMD);
return 0;
}
int lbs_cmd_802_11_inactivity_timeout(struct lbs_private *priv,
uint16_t cmd_action, uint16_t *timeout)
{
struct cmd_ds_802_11_inactivity_timeout cmd;
int ret;
lbs_deb_enter(LBS_DEB_CMD);
cmd.hdr.command = cpu_to_le16(CMD_802_11_INACTIVITY_TIMEOUT);
cmd.hdr.size = cpu_to_le16(sizeof(cmd));
cmd.action = cpu_to_le16(cmd_action);
if (cmd_action == CMD_ACT_SET)
cmd.timeout = cpu_to_le16(*timeout);
else
cmd.timeout = 0;
ret = lbs_cmd_with_response(priv, CMD_802_11_INACTIVITY_TIMEOUT, &cmd);
if (!ret)
*timeout = le16_to_cpu(cmd.timeout);
lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
return 0;
}
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;
}
int lbs_cmd_802_11_set_wep(struct lbs_private *priv, uint16_t cmd_action,
struct assoc_request *assoc)
{
struct cmd_ds_802_11_set_wep cmd;
int ret = 0;
lbs_deb_enter(LBS_DEB_CMD);
memset(&cmd, 0, sizeof(cmd));
cmd.hdr.command = cpu_to_le16(CMD_802_11_SET_WEP);
cmd.hdr.size = cpu_to_le16(sizeof(cmd));
cmd.action = cpu_to_le16(cmd_action);
if (cmd_action == CMD_ACT_ADD) {
int i;
/* default tx key index */
cmd.keyindex = cpu_to_le16(assoc->wep_tx_keyidx &
CMD_WEP_KEY_INDEX_MASK);
/* Copy key types and material to host command structure */
for (i = 0; i < 4; i++) {
struct enc_key *pkey = &assoc->wep_keys[i];
switch (pkey->len) {
case KEY_LEN_WEP_40:
cmd.keytype[i] = CMD_TYPE_WEP_40_BIT;
memmove(cmd.keymaterial[i], pkey->key, pkey->len);
lbs_deb_cmd("SET_WEP: add key %d (40 bit)\n", i);
break;
case KEY_LEN_WEP_104:
cmd.keytype[i] = CMD_TYPE_WEP_104_BIT;
memmove(cmd.keymaterial[i], pkey->key, pkey->len);
lbs_deb_cmd("SET_WEP: add key %d (104 bit)\n", i);
break;
case 0:
break;
default:
lbs_deb_cmd("SET_WEP: invalid key %d, length %d\n",
i, pkey->len);
ret = -1;
goto done;
break;
}
}
} else if (cmd_action == CMD_ACT_REMOVE) {
/* ACT_REMOVE clears _all_ WEP keys */
/* default tx key index */
cmd.keyindex = cpu_to_le16(priv->wep_tx_keyidx &
CMD_WEP_KEY_INDEX_MASK);
lbs_deb_cmd("SET_WEP: remove key %d\n", priv->wep_tx_keyidx);
}
ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
done:
lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
return ret;
}
int lbs_cmd_802_11_enable_rsn(struct lbs_private *priv, uint16_t cmd_action,
uint16_t *enable)
{
struct cmd_ds_802_11_enable_rsn cmd;
int ret;
lbs_deb_enter(LBS_DEB_CMD);
cmd.hdr.size = cpu_to_le16(sizeof(cmd));
cmd.action = cpu_to_le16(cmd_action);
if (cmd_action == CMD_ACT_GET)
cmd.enable = 0;
else {
if (*enable)
cmd.enable = cpu_to_le16(CMD_ENABLE_RSN);
else
cmd.enable = cpu_to_le16(CMD_DISABLE_RSN);
lbs_deb_cmd("ENABLE_RSN: %d\n", *enable);
}
ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd);
if (!ret && cmd_action == CMD_ACT_GET)
*enable = le16_to_cpu(cmd.enable);
lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
return ret;
}
static void set_one_wpa_key(struct MrvlIEtype_keyParamSet *keyparam,
struct enc_key *key)
{
lbs_deb_enter(LBS_DEB_CMD);
if (key->flags & KEY_INFO_WPA_ENABLED)
keyparam->keyinfo |= cpu_to_le16(KEY_INFO_WPA_ENABLED);
if (key->flags & KEY_INFO_WPA_UNICAST)
keyparam->keyinfo |= cpu_to_le16(KEY_INFO_WPA_UNICAST);
if (key->flags & KEY_INFO_WPA_MCAST)
keyparam->keyinfo |= cpu_to_le16(KEY_INFO_WPA_MCAST);
keyparam->type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
keyparam->keytypeid = cpu_to_le16(key->type);
keyparam->keylen = cpu_to_le16(key->len);
memcpy(keyparam->key, key->key, key->len);
/* Length field doesn't include the {type,length} header */
keyparam->length = cpu_to_le16(sizeof(*keyparam) - 4);
lbs_deb_leave(LBS_DEB_CMD);
}
int lbs_cmd_802_11_key_material(struct lbs_private *priv, uint16_t cmd_action,
struct assoc_request *assoc)
{
struct cmd_ds_802_11_key_material cmd;
int ret = 0;
int index = 0;
lbs_deb_enter(LBS_DEB_CMD);
cmd.action = cpu_to_le16(cmd_action);
cmd.hdr.size = cpu_to_le16(sizeof(cmd));
if (cmd_action == CMD_ACT_GET) {
cmd.hdr.size = cpu_to_le16(S_DS_GEN + 2);
} else {
memset(cmd.keyParamSet, 0, sizeof(cmd.keyParamSet));
if (test_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc->flags)) {
set_one_wpa_key(&cmd.keyParamSet[index],
&assoc->wpa_unicast_key);
index++;
}
if (test_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc->flags)) {
set_one_wpa_key(&cmd.keyParamSet[index],
&assoc->wpa_mcast_key);
index++;
}
/* The common header and as many keys as we included */
cmd.hdr.size = cpu_to_le16(offsetof(typeof(cmd),
keyParamSet[index]));
}
ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd);
/* Copy the returned key to driver private data */
if (!ret && cmd_action == CMD_ACT_GET) {
void *buf_ptr = cmd.keyParamSet;
void *resp_end = &(&cmd)[1];
while (buf_ptr < resp_end) {
struct MrvlIEtype_keyParamSet *keyparam = buf_ptr;
struct enc_key *key;
uint16_t param_set_len = le16_to_cpu(keyparam->length);
uint16_t key_len = le16_to_cpu(keyparam->keylen);
uint16_t key_flags = le16_to_cpu(keyparam->keyinfo);
uint16_t key_type = le16_to_cpu(keyparam->keytypeid);
void *end;
end = (void *)keyparam + sizeof(keyparam->type)
+ sizeof(keyparam->length) + param_set_len;
/* Make sure we don't access past the end of the IEs */
if (end > resp_end)
break;
if (key_flags & KEY_INFO_WPA_UNICAST)
key = &priv->wpa_unicast_key;
else if (key_flags & KEY_INFO_WPA_MCAST)
key = &priv->wpa_mcast_key;
else
break;
/* Copy returned key into driver */
memset(key, 0, sizeof(struct enc_key));
if (key_len > sizeof(key->key))
break;
key->type = key_type;
key->flags = key_flags;
key->len = key_len;
memcpy(key->key, keyparam->key, key->len);
buf_ptr = end + 1;
}
}
lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
return ret;
}
/**
* @brief Set an SNMP MIB value
*
* @param priv A pointer to struct lbs_private structure
* @param oid The OID to set in the firmware
* @param val Value to set the OID to
*
* @return 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 == IW_MODE_ADHOC) ? 2 : 1;
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;
}
/**
* @brief Get an SNMP MIB value
*
* @param priv A pointer to struct lbs_private structure
* @param oid The OID to retrieve from the firmware
* @param out_val Location for the returned value
*
* @return 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):
if (oid == SNMP_MIB_OID_BSS_TYPE) {
if (cmd.value[0] == 2)
*out_val = IW_MODE_ADHOC;
else
*out_val = IW_MODE_INFRA;
} else
*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;
}
/**
* @brief Get the min, max, and current TX power
*
* @param priv A pointer to struct lbs_private structure
* @param curlevel Current power level in dBm
* @param minlevel Minimum supported power level in dBm (optional)
* @param maxlevel Maximum supported power level in dBm (optional)
*
* @return 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;
}
/**
* @brief Set the TX power
*
* @param priv A pointer to struct lbs_private structure
* @param dbm The desired power level in dBm
*
* @return 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;
}
static int lbs_cmd_802_11_monitor_mode(struct cmd_ds_command *cmd,
u16 cmd_action, void *pdata_buf)
{
struct cmd_ds_802_11_monitor_mode *monitor = &cmd->params.monitor;
cmd->command = cpu_to_le16(CMD_802_11_MONITOR_MODE);
cmd->size =
cpu_to_le16(sizeof(struct cmd_ds_802_11_monitor_mode) +
S_DS_GEN);
monitor->action = cpu_to_le16(cmd_action);
if (cmd_action == CMD_ACT_SET) {
monitor->mode =
cpu_to_le16((u16) (*(u32 *) pdata_buf));
}
return 0;
}
static __le16 lbs_rate_to_fw_bitmap(int rate, int lower_rates_ok)
{
/* Bit Rate
* 15:13 Reserved
* 12 54 Mbps
* 11 48 Mbps
* 10 36 Mbps
* 9 24 Mbps
* 8 18 Mbps
* 7 12 Mbps
* 6 9 Mbps
* 5 6 Mbps
* 4 Reserved
* 3 11 Mbps
* 2 5.5 Mbps
* 1 2 Mbps
* 0 1 Mbps
**/
uint16_t ratemask;
int i = lbs_data_rate_to_fw_index(rate);
if (lower_rates_ok)
ratemask = (0x1fef >> (12 - i));
else
ratemask = (1 << i);
return cpu_to_le16(ratemask);
}
int lbs_cmd_802_11_rate_adapt_rateset(struct lbs_private *priv,
uint16_t cmd_action)
{
struct cmd_ds_802_11_rate_adapt_rateset cmd;
int ret;
lbs_deb_enter(LBS_DEB_CMD);
if (!priv->cur_rate && !priv->enablehwauto)
return -EINVAL;
cmd.hdr.size = cpu_to_le16(sizeof(cmd));
cmd.action = cpu_to_le16(cmd_action);
cmd.enablehwauto = cpu_to_le16(priv->enablehwauto);
cmd.bitmap = lbs_rate_to_fw_bitmap(priv->cur_rate, priv->enablehwauto);
ret = lbs_cmd_with_response(priv, CMD_802_11_RATE_ADAPT_RATESET, &cmd);
if (!ret && cmd_action == CMD_ACT_GET) {
priv->ratebitmap = le16_to_cpu(cmd.bitmap);
priv->enablehwauto = le16_to_cpu(cmd.enablehwauto);
}
lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
return ret;
}
EXPORT_SYMBOL_GPL(lbs_cmd_802_11_rate_adapt_rateset);
/**
* @brief Set the data rate
*
* @param priv A pointer to struct lbs_private structure
* @param rate The desired data rate, or 0 to clear a locked rate
*
* @return 0 on success, error on failure
*/
int lbs_set_data_rate(struct lbs_private *priv, u8 rate)
{
struct cmd_ds_802_11_data_rate cmd;
int ret = 0;
lbs_deb_enter(LBS_DEB_CMD);
memset(&cmd, 0, sizeof(cmd));
cmd.hdr.size = cpu_to_le16(sizeof(cmd));
if (rate > 0) {
cmd.action = cpu_to_le16(CMD_ACT_SET_TX_FIX_RATE);
cmd.rates[0] = lbs_data_rate_to_fw_index(rate);
if (cmd.rates[0] == 0) {
lbs_deb_cmd("DATA_RATE: invalid requested rate of"
" 0x%02X\n", rate);
ret = 0;
goto out;
}
lbs_deb_cmd("DATA_RATE: set fixed 0x%02X\n", cmd.rates[0]);
} else {
cmd.action = cpu_to_le16(CMD_ACT_SET_TX_AUTO);
lbs_deb_cmd("DATA_RATE: setting auto\n");
}
ret = lbs_cmd_with_response(priv, CMD_802_11_DATA_RATE, &cmd);
if (ret)
goto out;
lbs_deb_hex(LBS_DEB_CMD, "DATA_RATE_RESP", (u8 *) &cmd, sizeof (cmd));
/* FIXME: get actual rates FW can do if this command actually returns
* all data rates supported.
*/
priv->cur_rate = lbs_fw_index_to_data_rate(cmd.rates[0]);
lbs_deb_cmd("DATA_RATE: current rate is 0x%02x\n", priv->cur_rate);
out:
lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
return ret;
}
/**
* @brief Get the radio channel
*
* @param priv A pointer to struct lbs_private structure
*
* @return The channel on success, error on failure
*/
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->curbssparams.channel = ret;
ret = 0;
}
lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
return ret;
}
/**
* @brief Set the radio channel
*
* @param priv A pointer to struct lbs_private structure
* @param channel The desired channel, or 0 to clear a locked channel
*
* @return 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->curbssparams.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->curbssparams.channel = (uint8_t) le16_to_cpu(cmd.channel);
lbs_deb_cmd("channel switch from %d to %d\n", old_channel,
priv->curbssparams.channel);
out:
lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
return ret;
}
static int lbs_cmd_802_11_rssi(struct lbs_private *priv,
struct cmd_ds_command *cmd)
{
lbs_deb_enter(LBS_DEB_CMD);
cmd->command = cpu_to_le16(CMD_802_11_RSSI);
cmd->size = cpu_to_le16(sizeof(struct cmd_ds_802_11_rssi) + S_DS_GEN);
cmd->params.rssi.N = cpu_to_le16(DEFAULT_BCN_AVG_FACTOR);
/* reset Beacon SNR/NF/RSSI values */
priv->SNR[TYPE_BEACON][TYPE_NOAVG] = 0;
priv->SNR[TYPE_BEACON][TYPE_AVG] = 0;
priv->NF[TYPE_BEACON][TYPE_NOAVG] = 0;
priv->NF[TYPE_BEACON][TYPE_AVG] = 0;
priv->RSSI[TYPE_BEACON][TYPE_NOAVG] = 0;
priv->RSSI[TYPE_BEACON][TYPE_AVG] = 0;
lbs_deb_leave(LBS_DEB_CMD);
return 0;
}
static int lbs_cmd_reg_access(struct cmd_ds_command *cmdptr,
u8 cmd_action, void *pdata_buf)
{
struct lbs_offset_value *offval;
lbs_deb_enter(LBS_DEB_CMD);
offval = (struct lbs_offset_value *)pdata_buf;
switch (le16_to_cpu(cmdptr->command)) {
case CMD_MAC_REG_ACCESS:
{
struct cmd_ds_mac_reg_access *macreg;
cmdptr->size =
cpu_to_le16(sizeof (struct cmd_ds_mac_reg_access)
+ S_DS_GEN);
macreg =
(struct cmd_ds_mac_reg_access *)&cmdptr->params.
macreg;
macreg->action = cpu_to_le16(cmd_action);
macreg->offset = cpu_to_le16((u16) offval->offset);
macreg->value = cpu_to_le32(offval->value);
break;
}
case CMD_BBP_REG_ACCESS:
{
struct cmd_ds_bbp_reg_access *bbpreg;
cmdptr->size =
cpu_to_le16(sizeof
(struct cmd_ds_bbp_reg_access)
+ S_DS_GEN);
bbpreg =
(struct cmd_ds_bbp_reg_access *)&cmdptr->params.
bbpreg;
bbpreg->action = cpu_to_le16(cmd_action);
bbpreg->offset = cpu_to_le16((u16) offval->offset);
bbpreg->value = (u8) offval->value;
break;
}
case CMD_RF_REG_ACCESS:
{
struct cmd_ds_rf_reg_access *rfreg;
cmdptr->size =
cpu_to_le16(sizeof
(struct cmd_ds_rf_reg_access) +
S_DS_GEN);
rfreg =
(struct cmd_ds_rf_reg_access *)&cmdptr->params.
rfreg;
rfreg->action = cpu_to_le16(cmd_action);
rfreg->offset = cpu_to_le16((u16) offval->offset);
rfreg->value = (u8) offval->value;
break;
}
default:
break;
}
lbs_deb_leave(LBS_DEB_CMD);
return 0;
}
static int lbs_cmd_bt_access(struct cmd_ds_command *cmd,
u16 cmd_action, void *pdata_buf)
{
struct cmd_ds_bt_access *bt_access = &cmd->params.bt;
lbs_deb_enter_args(LBS_DEB_CMD, "action %d", cmd_action);
cmd->command = cpu_to_le16(CMD_BT_ACCESS);
cmd->size = cpu_to_le16(sizeof(struct cmd_ds_bt_access) + S_DS_GEN);
cmd->result = 0;
bt_access->action = cpu_to_le16(cmd_action);
switch (cmd_action) {
case CMD_ACT_BT_ACCESS_ADD:
memcpy(bt_access->addr1, pdata_buf, 2 * ETH_ALEN);
lbs_deb_hex(LBS_DEB_MESH, "BT_ADD: blinded MAC addr", bt_access->addr1, 6);
break;
case CMD_ACT_BT_ACCESS_DEL:
memcpy(bt_access->addr1, pdata_buf, 1 * ETH_ALEN);
lbs_deb_hex(LBS_DEB_MESH, "BT_DEL: blinded MAC addr", bt_access->addr1, 6);
break;
case CMD_ACT_BT_ACCESS_LIST:
bt_access->id = cpu_to_le32(*(u32 *) pdata_buf);
break;
case CMD_ACT_BT_ACCESS_RESET:
break;
case CMD_ACT_BT_ACCESS_SET_INVERT:
bt_access->id = cpu_to_le32(*(u32 *) pdata_buf);
break;
case CMD_ACT_BT_ACCESS_GET_INVERT:
break;
default:
break;
}
lbs_deb_leave(LBS_DEB_CMD);
return 0;
}
static int lbs_cmd_fwt_access(struct cmd_ds_command *cmd,
u16 cmd_action, void *pdata_buf)
{
struct cmd_ds_fwt_access *fwt_access = &cmd->params.fwt;
lbs_deb_enter_args(LBS_DEB_CMD, "action %d", cmd_action);
cmd->command = cpu_to_le16(CMD_FWT_ACCESS);
cmd->size = cpu_to_le16(sizeof(struct cmd_ds_fwt_access) + S_DS_GEN);
cmd->result = 0;
if (pdata_buf)
memcpy(fwt_access, pdata_buf, sizeof(*fwt_access));
else
memset(fwt_access, 0, sizeof(*fwt_access));
fwt_access->action = cpu_to_le16(cmd_action);
lbs_deb_leave(LBS_DEB_CMD);
return 0;
}
int lbs_mesh_access(struct lbs_private *priv, uint16_t cmd_action,
struct cmd_ds_mesh_access *cmd)
{
int ret;
lbs_deb_enter_args(LBS_DEB_CMD, "action %d", cmd_action);
cmd->hdr.command = cpu_to_le16(CMD_MESH_ACCESS);
cmd->hdr.size = cpu_to_le16(sizeof(*cmd));
cmd->hdr.result = 0;
cmd->action = cpu_to_le16(cmd_action);
ret = lbs_cmd_with_response(priv, CMD_MESH_ACCESS, cmd);
lbs_deb_leave(LBS_DEB_CMD);
return ret;
}
static int __lbs_mesh_config_send(struct lbs_private *priv,
struct cmd_ds_mesh_config *cmd,
uint16_t action, uint16_t type)
{
int ret;
lbs_deb_enter(LBS_DEB_CMD);
cmd->hdr.command = cpu_to_le16(CMD_MESH_CONFIG);
cmd->hdr.size = cpu_to_le16(sizeof(struct cmd_ds_mesh_config));
cmd->hdr.result = 0;
cmd->type = cpu_to_le16(type);
cmd->action = cpu_to_le16(action);
ret = lbs_cmd_with_response(priv, CMD_MESH_CONFIG, cmd);
lbs_deb_leave(LBS_DEB_CMD);
return ret;
}
int lbs_mesh_config_send(struct lbs_private *priv,
struct cmd_ds_mesh_config *cmd,
uint16_t action, uint16_t type)
{
int ret;
if (!(priv->fwcapinfo & FW_CAPINFO_PERSISTENT_CONFIG))
return -EOPNOTSUPP;
ret = __lbs_mesh_config_send(priv, cmd, action, type);
return ret;
}
/* This function is the CMD_MESH_CONFIG legacy function. It only handles the
* START and STOP actions. The extended actions supported by CMD_MESH_CONFIG
* are all handled by preparing a struct cmd_ds_mesh_config and passing it to
* lbs_mesh_config_send.
*/
int lbs_mesh_config(struct lbs_private *priv, uint16_t action, uint16_t chan)
{
struct cmd_ds_mesh_config cmd;
struct mrvl_meshie *ie;
DECLARE_SSID_BUF(ssid);
memset(&cmd, 0, sizeof(cmd));
cmd.channel = cpu_to_le16(chan);
ie = (struct mrvl_meshie *)cmd.data;
switch (action) {
case CMD_ACT_MESH_CONFIG_START:
ie->id = WLAN_EID_GENERIC;
ie->val.oui[0] = 0x00;
ie->val.oui[1] = 0x50;
ie->val.oui[2] = 0x43;
ie->val.type = MARVELL_MESH_IE_TYPE;
ie->val.subtype = MARVELL_MESH_IE_SUBTYPE;
ie->val.version = MARVELL_MESH_IE_VERSION;
ie->val.active_protocol_id = MARVELL_MESH_PROTO_ID_HWMP;
ie->val.active_metric_id = MARVELL_MESH_METRIC_ID;
ie->val.mesh_capability = MARVELL_MESH_CAPABILITY;
ie->val.mesh_id_len = priv->mesh_ssid_len;
memcpy(ie->val.mesh_id, priv->mesh_ssid, priv->mesh_ssid_len);
ie->len = sizeof(struct mrvl_meshie_val) -
IW_ESSID_MAX_SIZE + priv->mesh_ssid_len;
cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie_val));
break;
case CMD_ACT_MESH_CONFIG_STOP:
break;
default:
return -1;
}
lbs_deb_cmd("mesh config action %d type %x channel %d SSID %s\n",
action, priv->mesh_tlv, chan,
print_ssid(ssid, priv->mesh_ssid, priv->mesh_ssid_len));
return __lbs_mesh_config_send(priv, &cmd, action, priv->mesh_tlv);
}
static int lbs_cmd_bcn_ctrl(struct lbs_private * priv,
struct cmd_ds_command *cmd,
u16 cmd_action)
{
struct cmd_ds_802_11_beacon_control
*bcn_ctrl = &cmd->params.bcn_ctrl;
lbs_deb_enter(LBS_DEB_CMD);
cmd->size =
cpu_to_le16(sizeof(struct cmd_ds_802_11_beacon_control)
+ S_DS_GEN);
cmd->command = cpu_to_le16(CMD_802_11_BEACON_CTRL);
bcn_ctrl->action = cpu_to_le16(cmd_action);
bcn_ctrl->beacon_enable = cpu_to_le16(priv->beacon_enable);
bcn_ctrl->beacon_period = cpu_to_le16(priv->beacon_period);
lbs_deb_leave(LBS_DEB_CMD);
return 0;
}
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[1];
if (psm->action == cpu_to_le16(CMD_SUBCMD_EXIT_PS)) {
if (priv->psstate != PS_STATE_FULL_POWER)
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->cur_cmd = cmdnode;
priv->cur_cmd_retcode = 0;
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 ||
command == CMD_802_11_AUTHENTICATE)
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) {
lbs_pr_info("DNLD_CMD: hw_host_to_card failed: %d\n", ret);
/* Let the timer kick in and retry, and potentially reset
the whole thing if the condition persists */
timeo = HZ/4;
}
/* 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)
{
if (cmd == priv->cur_cmd)
priv->cur_cmd_retcode = result;
cmd->result = result;
cmd->cmdwaitqwoken = 1;
wake_up_interruptible(&cmd->cmdwait_q);
if (!cmd->callback || cmd->callback == lbs_cmd_async_callback)
__lbs_cleanup_and_insert_cmd(priv, cmd);
priv->cur_cmd = NULL;
}
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:
if (!(priv->capability & WLAN_CAPABILITY_SHORT_PREAMBLE))
goto out;
/* Fall through */
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);
}
/**
* @brief This function prepare the command before send to firmware.
*
* @param priv A pointer to struct lbs_private structure
* @param cmd_no command number
* @param cmd_action command action: GET or SET
* @param wait_option wait option: wait response or not
* @param cmd_oid cmd oid: treated as sub command
* @param pdata_buf A pointer to informaion buffer
* @return 0 or -1
*/
int lbs_prepare_and_send_command(struct lbs_private *priv,
u16 cmd_no,
u16 cmd_action,
u16 wait_option, u32 cmd_oid, void *pdata_buf)
{
int ret = 0;
struct cmd_ctrl_node *cmdnode;
struct cmd_ds_command *cmdptr;
unsigned long flags;
lbs_deb_enter(LBS_DEB_HOST);
if (!priv) {
lbs_deb_host("PREP_CMD: priv is NULL\n");
ret = -1;
goto done;
}
if (priv->surpriseremoved) {
lbs_deb_host("PREP_CMD: card removed\n");
ret = -1;
goto done;
}
cmdnode = lbs_get_cmd_ctrl_node(priv);
if (cmdnode == NULL) {
lbs_deb_host("PREP_CMD: cmdnode is NULL\n");
/* Wake up main thread to execute next command */
wake_up_interruptible(&priv->waitq);
ret = -1;
goto done;
}
cmdnode->callback = NULL;
cmdnode->callback_arg = (unsigned long)pdata_buf;
cmdptr = (struct cmd_ds_command *)cmdnode->cmdbuf;
lbs_deb_host("PREP_CMD: command 0x%04x\n", cmd_no);
/* Set sequence number, command and INT option */
priv->seqnum++;
cmdptr->seqnum = cpu_to_le16(priv->seqnum);
cmdptr->command = cpu_to_le16(cmd_no);
cmdptr->result = 0;
switch (cmd_no) {
case CMD_802_11_PS_MODE:
ret = lbs_cmd_802_11_ps_mode(cmdptr, cmd_action);
break;
case CMD_802_11_ASSOCIATE:
case CMD_802_11_REASSOCIATE:
ret = lbs_cmd_80211_associate(priv, cmdptr, pdata_buf);
break;
case CMD_802_11_AUTHENTICATE:
ret = lbs_cmd_80211_authenticate(priv, cmdptr, pdata_buf);
break;
case CMD_MAC_REG_ACCESS:
case CMD_BBP_REG_ACCESS:
case CMD_RF_REG_ACCESS:
ret = lbs_cmd_reg_access(cmdptr, cmd_action, pdata_buf);
break;
case CMD_802_11_MONITOR_MODE:
ret = lbs_cmd_802_11_monitor_mode(cmdptr,
cmd_action, pdata_buf);
break;
case CMD_802_11_RSSI:
ret = lbs_cmd_802_11_rssi(priv, cmdptr);
break;
case CMD_802_11_SET_AFC:
case CMD_802_11_GET_AFC:
cmdptr->command = cpu_to_le16(cmd_no);
cmdptr->size = cpu_to_le16(sizeof(struct cmd_ds_802_11_afc) +
S_DS_GEN);
memmove(&cmdptr->params.afc,
pdata_buf, sizeof(struct cmd_ds_802_11_afc));
ret = 0;
goto done;
case CMD_802_11D_DOMAIN_INFO:
ret = lbs_cmd_802_11d_domain_info(priv, cmdptr,
cmd_no, cmd_action);
break;
case CMD_802_11_TPC_CFG:
cmdptr->command = cpu_to_le16(CMD_802_11_TPC_CFG);
cmdptr->size =
cpu_to_le16(sizeof(struct cmd_ds_802_11_tpc_cfg) +
S_DS_GEN);
memmove(&cmdptr->params.tpccfg,
pdata_buf, sizeof(struct cmd_ds_802_11_tpc_cfg));
ret = 0;
break;
case CMD_802_11_LED_GPIO_CTRL:
{
struct mrvlietypes_ledgpio *gpio =
(struct mrvlietypes_ledgpio*)
cmdptr->params.ledgpio.data;
memmove(&cmdptr->params.ledgpio,
pdata_buf,
sizeof(struct cmd_ds_802_11_led_ctrl));
cmdptr->command =
cpu_to_le16(CMD_802_11_LED_GPIO_CTRL);
#define ACTION_NUMLED_TLVTYPE_LEN_FIELDS_LEN 8
cmdptr->size =
cpu_to_le16(le16_to_cpu(gpio->header.len)
+ S_DS_GEN
+ ACTION_NUMLED_TLVTYPE_LEN_FIELDS_LEN);
gpio->header.len = gpio->header.len;
ret = 0;
break;
}
case CMD_BT_ACCESS:
ret = lbs_cmd_bt_access(cmdptr, cmd_action, pdata_buf);
break;
case CMD_FWT_ACCESS:
ret = lbs_cmd_fwt_access(cmdptr, cmd_action, pdata_buf);
break;
case CMD_GET_TSF:
cmdptr->command = cpu_to_le16(CMD_GET_TSF);
cmdptr->size = cpu_to_le16(sizeof(struct cmd_ds_get_tsf) +
S_DS_GEN);
ret = 0;
break;
case CMD_802_11_BEACON_CTRL:
ret = lbs_cmd_bcn_ctrl(priv, cmdptr, cmd_action);
break;
default:
lbs_pr_err("PREP_CMD: unknown command 0x%04x\n", cmd_no);
ret = -1;
break;
}
/* return error, since the command preparation failed */
if (ret != 0) {
lbs_deb_host("PREP_CMD: command preparation failed\n");
lbs_cleanup_and_insert_cmd(priv, cmdnode);
ret = -1;
goto done;
}
cmdnode->cmdwaitqwoken = 0;
lbs_queue_cmd(priv, cmdnode);
wake_up_interruptible(&priv->waitq);
if (wait_option & CMD_OPTION_WAITFORRSP) {
lbs_deb_host("PREP_CMD: wait for response\n");
might_sleep();
wait_event_interruptible(cmdnode->cmdwait_q,
cmdnode->cmdwaitqwoken);
}
spin_lock_irqsave(&priv->driver_lock, flags);
if (priv->cur_cmd_retcode) {
lbs_deb_host("PREP_CMD: command failed with return code %d\n",
priv->cur_cmd_retcode);
priv->cur_cmd_retcode = 0;
ret = -1;
}
spin_unlock_irqrestore(&priv->driver_lock, flags);
done:
lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
return ret;
}
/**
* @brief This function allocates the command buffer and link
* it to command free queue.
*
* @param priv A pointer to struct lbs_private structure
* @return 0 or -1
*/
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;
}
/**
* @brief This function frees the command buffer.
*
* @param priv A pointer to struct lbs_private structure
* @return 0 or -1
*/
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;
}
/**
* @brief This function gets a free command node if available in
* command free queue.
*
* @param priv A pointer to struct lbs_private structure
* @return cmd_ctrl_node A pointer to cmd_ctrl_node structure or NULL
*/
static struct cmd_ctrl_node *lbs_get_cmd_ctrl_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(&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;
}
/**
* @brief This function executes next command in command
* pending queue. It will put fimware back to PS mode
* if applicable.
*
* @param priv A pointer to struct lbs_private structure
* @return 0 or -1
*/
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) {
lbs_pr_alert( "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 lbs_ps_wakeup to 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_ps_wakeup(priv, 0);
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(CMD_SUBCMD_EXIT_PS)) {
lbs_deb_host(
"EXEC_NEXT_CMD: ignore ENTER_PS cmd\n");
list_del(&cmdnode->list);
spin_lock_irqsave(&priv->driver_lock, flags);
lbs_complete_command(priv, cmdnode, 0);
spin_unlock_irqrestore(&priv->driver_lock, flags);
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");
list_del(&cmdnode->list);
spin_lock_irqsave(&priv->driver_lock, flags);
lbs_complete_command(priv, cmdnode, 0);
spin_unlock_irqrestore(&priv->driver_lock, flags);
priv->needtowakeup = 1;
ret = 0;
goto done;
}
lbs_deb_host(
"EXEC_NEXT_CMD: sending EXIT_PS\n");
}
}
list_del(&cmdnode->list);
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
*/
if ((priv->psmode != LBS802_11POWERMODECAM) &&
(priv->psstate == PS_STATE_FULL_POWER) &&
((priv->connect_status == LBS_CONNECTED) ||
(priv->mesh_connect_status == LBS_CONNECTED))) {
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_ps_sleep(priv, 0);
}
} else {
lbs_deb_host(
"EXEC_NEXT_CMD: cmdpendingq empty, "
"go back to PS_SLEEP");
lbs_ps_sleep(priv, 0);
}
}
}
ret = 0;
done:
lbs_deb_leave(LBS_DEB_THREAD);
return ret;
}
void lbs_send_iwevcustom_event(struct lbs_private *priv, s8 *str)
{
union iwreq_data iwrq;
u8 buf[50];
lbs_deb_enter(LBS_DEB_WEXT);
memset(&iwrq, 0, sizeof(union iwreq_data));
memset(buf, 0, sizeof(buf));
snprintf(buf, sizeof(buf) - 1, "%s", str);
iwrq.data.length = strlen(buf) + 1 + IW_EV_LCP_LEN;
/* Send Event to upper layer */
lbs_deb_wext("event indication string %s\n", (char *)buf);
lbs_deb_wext("event indication length %d\n", iwrq.data.length);
lbs_deb_wext("sending wireless event IWEVCUSTOM for %s\n", str);
wireless_send_event(priv->dev, IWEVCUSTOM, &iwrq, buf);
lbs_deb_leave(LBS_DEB_WEXT);
}
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) {
lbs_pr_alert("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 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);
}
void lbs_ps_sleep(struct lbs_private *priv, int wait_option)
{
lbs_deb_enter(LBS_DEB_HOST);
/*
* PS is currently supported only in Infrastructure mode
* Remove this check if it is to be supported in IBSS mode also
*/
lbs_prepare_and_send_command(priv, CMD_802_11_PS_MODE,
CMD_SUBCMD_ENTER_PS, wait_option, 0, NULL);
lbs_deb_leave(LBS_DEB_HOST);
}
/**
* @brief This function sends Exit_PS command to firmware.
*
* @param priv A pointer to struct lbs_private structure
* @param wait_option wait response or not
* @return n/a
*/
void lbs_ps_wakeup(struct lbs_private *priv, int wait_option)
{
__le32 Localpsmode;
lbs_deb_enter(LBS_DEB_HOST);
Localpsmode = cpu_to_le32(LBS802_11POWERMODECAM);
lbs_prepare_and_send_command(priv, CMD_802_11_PS_MODE,
CMD_SUBCMD_EXIT_PS,
wait_option, 0, &Localpsmode);
lbs_deb_leave(LBS_DEB_HOST);
}
/**
* @brief This function checks condition and prepares to
* send sleep confirm command to firmware if ok.
*
* @param priv A pointer to struct lbs_private structure
* @param psmode Power Saving mode
* @return 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);
}
/**
* @brief Configures the transmission power control functionality.
*
* @param priv A pointer to struct lbs_private structure
* @param enable Transmission power control enable
* @param p0 Power level when link quality is good (dBm).
* @param p1 Power level when link quality is fair (dBm).
* @param p2 Power level when link quality is poor (dBm).
* @param usesnr Use Signal to Noise Ratio in TPC
*
* @return 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;
}
/**
* @brief Configures the power adaptation settings.
*
* @param priv A pointer to struct lbs_private structure
* @param enable Power adaptation enable
* @param p0 Power level for 1, 2, 5.5 and 11 Mbps (dBm).
* @param p1 Power level for 6, 9, 12, 18, 22, 24 and 36 Mbps (dBm).
* @param p2 Power level for 48 and 54 Mbps (dBm).
*
* @return 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;
}
static 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;
}
cmdnode = lbs_get_cmd_ctrl_node(priv);
if (cmdnode == NULL) {
lbs_deb_host("PREP_CMD: cmdnode is NULL\n");
/* Wake up main thread to execute next command */
wake_up_interruptible(&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 sequence number, clean result, move to buffer */
priv->seqnum++;
cmdnode->cmdbuf->command = cpu_to_le16(command);
cmdnode->cmdbuf->size = cpu_to_le16(in_cmd_size);
cmdnode->cmdbuf->seqnum = cpu_to_le16(priv->seqnum);
cmdnode->cmdbuf->result = 0;
lbs_deb_host("PREP_CMD: command 0x%04x\n", command);
cmdnode->cmdwaitqwoken = 0;
lbs_queue_cmd(priv, cmdnode);
wake_up_interruptible(&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();
wait_event_interruptible(cmdnode->cmdwait_q, cmdnode->cmdwaitqwoken);
spin_lock_irqsave(&priv->driver_lock, flags);
ret = cmdnode->result;
if (ret)
lbs_pr_info("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);
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