char *
wf_chspec_ntoa(chanspec_t chspec, char *buf)
{
const char *band, *bw, *sb;
uint channel;
DHD_MYTRACE(("%s-%s\n", __FILE__, __FUNCTION__));
band = "";
bw = "";
sb = "";
channel = CHSPEC_CHANNEL(chspec);
if ((CHSPEC_IS2G(chspec) && channel > CH_MAX_2G_CHANNEL) ||
(CHSPEC_IS5G(chspec) && channel <= CH_MAX_2G_CHANNEL))
band = (CHSPEC_IS2G(chspec)) ? "b" : "a";
if (CHSPEC_IS40(chspec)) {
if (CHSPEC_SB_UPPER(chspec)) {
sb = "u";
channel += CH_10MHZ_APART;
} else {
sb = "l";
channel -= CH_10MHZ_APART;
}
} else if (CHSPEC_IS10(chspec)) {
bw = "n";
}
snprintf(buf, 6, "%d%s%s%s", channel, band, bw, sb);
return (buf);
}
/* given a chanspec and a string buffer, format the chanspec as a
* string, and return the original pointer a.
* Min buffer length must be CHANSPEC_STR_LEN.
* On error return NULL
*/
char *
wf_chspec_ntoa(chanspec_t chspec, char *buf)
{
const char *band, *bw, *sb;
uint channel;
band = "";
bw = "";
sb = "";
channel = CHSPEC_CHANNEL(chspec);
/* check for non-default band spec */
if ((CHSPEC_IS2G(chspec) && channel > CH_MAX_2G_CHANNEL) ||
(CHSPEC_IS5G(chspec) && channel <= CH_MAX_2G_CHANNEL))
band = (CHSPEC_IS2G(chspec)) ? "b" : "a";
if (CHSPEC_IS40(chspec)) {
if (CHSPEC_SB_UPPER(chspec)) {
sb = "u";
channel += CH_10MHZ_APART;
} else {
sb = "l";
channel -= CH_10MHZ_APART;
}
} else if (CHSPEC_IS10(chspec)) {
bw = "n";
}
/* Outputs a max of 6 chars including '\0' */
snprintf(buf, 6, "%d%s%s%s", channel, band, bw, sb);
return (buf);
}
static uint8
spec_to_chan(chanspec_t chspec)
{
uint8 center_ch, edge, primary, sb;
center_ch = CHSPEC_CHANNEL(chspec);
if (CHSPEC_IS20(chspec)) {
return center_ch;
} else {
/* the lower edge of the wide channel is half the bw from
* the center channel.
*/
if (CHSPEC_IS40(chspec)) {
edge = center_ch - CH_20MHZ_APART;
} else {
/* must be 80MHz (until we support more) */
ASSERT(CHSPEC_IS80(chspec));
edge = center_ch - CH_40MHZ_APART;
}
/* find the channel number of the lowest 20MHz primary channel */
primary = edge + CH_10MHZ_APART;
/* select the actual subband */
sb = (chspec & WL_CHANSPEC_CTL_SB_MASK) >> WL_CHANSPEC_CTL_SB_SHIFT;
primary = primary + sb * CH_20MHZ_APART;
return primary;
}
}
/* given a chanspec and a string buffer, format the chanspec as a
* string, and return the original pointer a.
* Min buffer length must be CHANSPEC_STR_LEN.
* On error return NULL
*/
char *
wf_chspec_ntoa(chanspec_t chspec, char *buf)
{
const char *band;
uint ctl_chan;
if (wf_chspec_malformed(chspec))
return NULL;
band = "";
/* check for non-default band spec */
if ((CHSPEC_IS2G(chspec) && CHSPEC_CHANNEL(chspec) > CH_MAX_2G_CHANNEL) ||
(CHSPEC_IS5G(chspec) && CHSPEC_CHANNEL(chspec) <= CH_MAX_2G_CHANNEL))
band = (CHSPEC_IS2G(chspec)) ? "2g" : "5g";
/* ctl channel */
ctl_chan = wf_chspec_ctlchan(chspec);
/* bandwidth and ctl sideband */
if (CHSPEC_IS20(chspec)) {
snprintf(buf, CHANSPEC_STR_LEN, "%s%d", band, ctl_chan);
} else if (!CHSPEC_IS8080(chspec)) {
const char *bw;
const char *sb = "";
bw = wf_chspec_bw_str[(chspec & WL_CHANSPEC_BW_MASK) >> WL_CHANSPEC_BW_SHIFT];
#ifdef CHANSPEC_NEW_40MHZ_FORMAT
/* ctl sideband string if needed for 2g 40MHz */
if (CHSPEC_IS40(chspec) && CHSPEC_IS2G(chspec)) {
sb = CHSPEC_SB_UPPER(chspec) ? "u" : "l";
}
snprintf(buf, CHANSPEC_STR_LEN, "%s%d/%s%s", band, ctl_chan, bw, sb);
#else
/* ctl sideband string instead of BW for 40MHz */
if (CHSPEC_IS40(chspec)) {
sb = CHSPEC_SB_UPPER(chspec) ? "u" : "l";
snprintf(buf, CHANSPEC_STR_LEN, "%s%d%s", band, ctl_chan, sb);
} else {
snprintf(buf, CHANSPEC_STR_LEN, "%s%d/%s", band, ctl_chan, bw);
}
#endif /* CHANSPEC_NEW_40MHZ_FORMAT */
} else {
char *
wf_chspec_ntoa(chanspec_t chspec, char *buf)
{
const char *band;
uint ctl_chan;
if (wf_chspec_malformed(chspec))
return NULL;
band = "";
if ((CHSPEC_IS2G(chspec) && CHSPEC_CHANNEL(chspec) > CH_MAX_2G_CHANNEL) ||
(CHSPEC_IS5G(chspec) && CHSPEC_CHANNEL(chspec) <= CH_MAX_2G_CHANNEL))
band = (CHSPEC_IS2G(chspec)) ? "2g" : "5g";
ctl_chan = wf_chspec_ctlchan(chspec);
if (CHSPEC_IS20(chspec)) {
snprintf(buf, CHANSPEC_STR_LEN, "%s%d", band, ctl_chan);
} else if (!CHSPEC_IS8080(chspec)) {
const char *bw;
const char *sb = "";
bw = wf_chspec_bw_str[(chspec & WL_CHANSPEC_BW_MASK) >> WL_CHANSPEC_BW_SHIFT];
#ifdef CHANSPEC_NEW_40MHZ_FORMAT
if (CHSPEC_IS40(chspec) && CHSPEC_IS2G(chspec)) {
sb = CHSPEC_SB_UPPER(chspec) ? "u" : "l";
}
snprintf(buf, CHANSPEC_STR_LEN, "%s%d/%s%s", band, ctl_chan, bw, sb);
#else
if (CHSPEC_IS40(chspec)) {
sb = CHSPEC_SB_UPPER(chspec) ? "u" : "l";
snprintf(buf, CHANSPEC_STR_LEN, "%s%d%s", band, ctl_chan, sb);
} else {
snprintf(buf, CHANSPEC_STR_LEN, "%s%d/%s", band, ctl_chan, bw);
}
#endif
} else {
void
brcms_c_stf_ss_algo_channel_get(struct brcms_c_info *wlc, u16 *ss_algo_channel,
u16 chanspec)
{
struct tx_power power;
u8 siso_mcs_id, cdd_mcs_id, stbc_mcs_id;
/* Clear previous settings */
*ss_algo_channel = 0;
if (!wlc->pub->up) {
*ss_algo_channel = (u16) -1;
return;
}
wlc_phy_txpower_get_current(wlc->band->pi, &power,
CHSPEC_CHANNEL(chanspec));
siso_mcs_id = (CHSPEC_IS40(chanspec)) ?
WL_TX_POWER_MCS40_SISO_FIRST : WL_TX_POWER_MCS20_SISO_FIRST;
cdd_mcs_id = (CHSPEC_IS40(chanspec)) ?
WL_TX_POWER_MCS40_CDD_FIRST : WL_TX_POWER_MCS20_CDD_FIRST;
stbc_mcs_id = (CHSPEC_IS40(chanspec)) ?
WL_TX_POWER_MCS40_STBC_FIRST : WL_TX_POWER_MCS20_STBC_FIRST;
/* criteria to choose stf mode */
/*
* the "+3dbm (12 0.25db units)" is to account for the fact that with
* CDD, tx occurs on both chains
*/
if (power.target[siso_mcs_id] > (power.target[cdd_mcs_id] + 12))
setbit(ss_algo_channel, PHY_TXC1_MODE_SISO);
else
setbit(ss_algo_channel, PHY_TXC1_MODE_CDD);
/*
* STBC is ORed into to algo channel as STBC requires per-packet SCB
* capability check so cannot be default mode of operation. One of
* SISO, CDD have to be set
*/
if (power.target[siso_mcs_id] <= (power.target[stbc_mcs_id] + 12))
setbit(ss_algo_channel, PHY_TXC1_MODE_STBC);
}
static bool
brcms_c_quiet_chanspec(struct brcms_cm_info *wlc_cm, u16 chspec)
{
return (wlc_cm->wlc->pub->_n_enab & SUPPORT_11N) &&
CHSPEC_IS40(chspec) ?
(isset(wlc_cm->quiet_channels.vec,
lower_20_sb(CHSPEC_CHANNEL(chspec))) ||
isset(wlc_cm->quiet_channels.vec,
upper_20_sb(CHSPEC_CHANNEL(chspec)))) :
isset(wlc_cm->quiet_channels.vec, CHSPEC_CHANNEL(chspec));
}
bool wlc_quiet_chanspec(wlc_cm_info_t *wlc_cm, chanspec_t chspec)
{
return N_ENAB(wlc_cm->wlc->pub) && CHSPEC_IS40(chspec) ?
(isset
(wlc_cm->quiet_channels.vec,
LOWER_20_SB(CHSPEC_CHANNEL(chspec)))
|| isset(wlc_cm->quiet_channels.vec,
UPPER_20_SB(CHSPEC_CHANNEL(chspec)))) : isset(wlc_cm->
quiet_channels.
vec,
CHSPEC_CHANNEL
(chspec));
}
/*
* Verify the chanspec is using a legal set of parameters, i.e. that the
* chanspec specified a band, bw, ctl_sb and channel and that the
* combination could be legal given any set of circumstances.
* RETURNS: true is the chanspec is malformed, false if it looks good.
*/
static bool brcms_c_chspec_malformed(u16 chanspec)
{
/* must be 2G or 5G band */
if (!CHSPEC_IS5G(chanspec) && !CHSPEC_IS2G(chanspec))
return true;
/* must be 20 or 40 bandwidth */
if (!CHSPEC_IS40(chanspec) && !CHSPEC_IS20(chanspec))
return true;
/* 20MHZ b/w must have no ctl sb, 40 must have a ctl sb */
if (CHSPEC_IS20(chanspec)) {
if (!CHSPEC_SB_NONE(chanspec))
return true;
} else if (!CHSPEC_SB_UPPER(chanspec) && !CHSPEC_SB_LOWER(chanspec)) {
return true;
}
return false;
}
/*
* Verify the chanspec is using a legal set of parameters, i.e. that the
* chanspec specified a band, bw, ctl_sb and channel and that the
* combination could be legal given any set of circumstances.
* RETURNS: TRUE is the chanspec is malformed, false if it looks good.
*/
bool
wf_chspec_malformed(chanspec_t chanspec)
{
/* must be 2G or 5G band */
if (!CHSPEC_IS5G(chanspec) && !CHSPEC_IS2G(chanspec))
return TRUE;
/* must be 20 or 40 bandwidth */
if (!CHSPEC_IS40(chanspec) && !CHSPEC_IS20(chanspec))
return TRUE;
/* 20MHZ b/w must have no ctl sb, 40 must have a ctl sb */
if (CHSPEC_IS20_UNCOND(chanspec)) {
if (!CHSPEC_SB_NONE(chanspec))
return TRUE;
} else {
if (!CHSPEC_SB_UPPER(chanspec) && !CHSPEC_SB_LOWER(chanspec))
return TRUE;
}
return FALSE;
}
bool
wf_chspec_malformed(chanspec_t chanspec)
{
if (!CHSPEC_IS5G(chanspec) && !CHSPEC_IS2G(chanspec))
return TRUE;
if (!CHSPEC_IS40(chanspec) && !CHSPEC_IS20(chanspec))
return TRUE;
if (CHSPEC_IS20(chanspec)) {
if (!CHSPEC_SB_NONE(chanspec))
return TRUE;
} else {
if (!CHSPEC_SB_UPPER(chanspec) && !CHSPEC_SB_LOWER(chanspec))
return TRUE;
}
return FALSE;
}
bool
wf_chspec_malformed(chanspec_t chanspec)
{
DHD_MYTRACE(("%s-%s\n", __FILE__, __FUNCTION__));
if (!CHSPEC_IS5G(chanspec) && !CHSPEC_IS2G(chanspec))
return TRUE;
if (!CHSPEC_IS40(chanspec) && !CHSPEC_IS20(chanspec))
return TRUE;
if (CHSPEC_IS20_UNCOND(chanspec)) {
if (!CHSPEC_SB_NONE(chanspec))
return TRUE;
} else {
if (!CHSPEC_SB_UPPER(chanspec) && !CHSPEC_SB_LOWER(chanspec))
return TRUE;
}
return FALSE;
}
