| /* |
| * This file contains the handling of command. |
| * It prepares command and sends it to firmware when it is ready. |
| */ |
| |
| #include <linux/kfifo.h> |
| #include <linux/sched.h> |
| #include <linux/slab.h> |
| #include <linux/if_arp.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 |
| * @request: cfg80211 regulatory request structure |
| * @bands: the device's supported bands and channels |
| * |
| * returns: 0 on success, error code on failure |
| */ |
| int lbs_set_11d_domain_info(struct lbs_private *priv, |
| struct regulatory_request *request, |
| struct ieee80211_supported_band **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; |
| |
| lbs_deb_enter(LBS_DEB_11D); |
| |
| memset(&cmd, 0, sizeof(cmd)); |
| cmd.action = cpu_to_le16(CMD_ACT_SET); |
| |
| lbs_deb_11d("Setting country code '%c%c'\n", |
| request->alpha2[0], request->alpha2[1]); |
| |
| domain->header.type = cpu_to_le16(TLV_TYPE_DOMAIN); |
| |
| /* Set country code */ |
| domain->country_code[0] = request->alpha2[0]; |
| domain->country_code[1] = request->alpha2[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); |
| |
| 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); |
| /* Let the timer kick in and retry, and potentially reset |
| the whole thing if the condition persists */ |
| timeo = HZ/4; |
| } |
| |
| 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) |
| { |
| 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: |
| 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); |
| } |
| |
| /** |
| * 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(&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"); |
| spin_lock_irqsave(&priv->driver_lock, flags); |
| list_del(&cmdnode->list); |
| 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"); |
| spin_lock_irqsave(&priv->driver_lock, flags); |
| list_del(&cmdnode->list); |
| 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"); |
| } |
| } |
| spin_lock_irqsave(&priv->driver_lock, flags); |
| list_del(&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_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 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_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) |
| 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); |