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path: root/drivers/net/wireless/libertas/cmd.c
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Diffstat (limited to 'drivers/net/wireless/libertas/cmd.c')
-rw-r--r--drivers/net/wireless/libertas/cmd.c1725
1 files changed, 1725 insertions, 0 deletions
diff --git a/drivers/net/wireless/libertas/cmd.c b/drivers/net/wireless/libertas/cmd.c
new file mode 100644
index 000000000..0387a5b38
--- /dev/null
+++ b/drivers/net/wireless/libertas/cmd.c
@@ -0,0 +1,1725 @@
+/*
+ * 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);
+ cmd.control = 0;
+
+ /* 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);