-#ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
-
-#include "iwl-spectrum.h"
-
-#define BEACON_TIME_MASK_LOW 0x00FFFFFF
-#define BEACON_TIME_MASK_HIGH 0xFF000000
-#define TIME_UNIT 1024
-
-/*
- * extended beacon time format
- * time in usec will be changed into a 32-bit value in 8:24 format
- * the high 1 byte is the beacon counts
- * the lower 3 bytes is the time in usec within one beacon interval
- */
-
-static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
-{
- u32 quot;
- u32 rem;
- u32 interval = beacon_interval * 1024;
-
- if (!interval || !usec)
- return 0;
-
- quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
- rem = (usec % interval) & BEACON_TIME_MASK_LOW;
-
- return (quot << 24) + rem;
-}
-
-/* base is usually what we get from ucode with each received frame,
- * the same as HW timer counter counting down
- */
-
-static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
-{
- u32 base_low = base & BEACON_TIME_MASK_LOW;
- u32 addon_low = addon & BEACON_TIME_MASK_LOW;
- u32 interval = beacon_interval * TIME_UNIT;
- u32 res = (base & BEACON_TIME_MASK_HIGH) +
- (addon & BEACON_TIME_MASK_HIGH);
-
- if (base_low > addon_low)
- res += base_low - addon_low;
- else if (base_low < addon_low) {
- res += interval + base_low - addon_low;
- res += (1 << 24);
- } else
- res += (1 << 24);
-
- return cpu_to_le32(res);
-}
-
-static int iwl4965_get_measurement(struct iwl_priv *priv,
- struct ieee80211_measurement_params *params,
- u8 type)
-{
- struct iwl4965_spectrum_cmd spectrum;
- struct iwl_rx_packet *res;
- struct iwl_host_cmd cmd = {
- .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
- .data = (void *)&spectrum,
- .meta.flags = CMD_WANT_SKB,
- };
- u32 add_time = le64_to_cpu(params->start_time);
- int rc;
- int spectrum_resp_status;
- int duration = le16_to_cpu(params->duration);
-
- if (iwl_is_associated(priv))
- add_time =
- iwl4965_usecs_to_beacons(
- le64_to_cpu(params->start_time) - priv->last_tsf,
- le16_to_cpu(priv->rxon_timing.beacon_interval));
-
- memset(&spectrum, 0, sizeof(spectrum));
-
- spectrum.channel_count = cpu_to_le16(1);
- spectrum.flags =
- RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
- spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
- cmd.len = sizeof(spectrum);
- spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
-
- if (iwl_is_associated(priv))
- spectrum.start_time =
- iwl4965_add_beacon_time(priv->last_beacon_time,
- add_time,
- le16_to_cpu(priv->rxon_timing.beacon_interval));
- else
- spectrum.start_time = 0;
-
- spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
- spectrum.channels[0].channel = params->channel;
- spectrum.channels[0].type = type;
- if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
- spectrum.flags |= RXON_FLG_BAND_24G_MSK |
- RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
-
- rc = iwl_send_cmd_sync(priv, &cmd);
- if (rc)
- return rc;
-
- res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
- if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
- IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
- rc = -EIO;
- }
-
- spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
- switch (spectrum_resp_status) {
- case 0: /* Command will be handled */
- if (res->u.spectrum.id != 0xff) {
- IWL_DEBUG_INFO
- ("Replaced existing measurement: %d\n",
- res->u.spectrum.id);
- priv->measurement_status &= ~MEASUREMENT_READY;
- }
- priv->measurement_status |= MEASUREMENT_ACTIVE;
- rc = 0;
- break;
-
- case 1: /* Command will not be handled */
- rc = -EAGAIN;
- break;
- }
-
- dev_kfree_skb_any(cmd.meta.u.skb);
-
- return rc;
-}
-#endif