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brcmfmac: correct reporting HT40 support in wiphy htcap 

Using 'iw phy' only showed HT20 support in the HT capabilities info.
This patch determines support for HT40 using a firmware query that
is supposed to work for all supported devices.

Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Franky Lin <frankyl@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Arend van Spriel 2014-01-06 12:40:41 +01:00 committed by John W. Linville
parent fad1322850
commit 2375d9701b
2 changed files with 91 additions and 43 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

120
drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
View File

@ -5087,7 +5087,8 @@ dongle_scantime_out:
}
static s32 brcmf_construct_reginfo(struct brcmf_cfg80211_info *cfg, u32 bw_cap)
static s32 brcmf_construct_reginfo(struct brcmf_cfg80211_info *cfg,
u32 bw_cap[])
{
struct brcmf_if *ifp = netdev_priv(cfg_to_ndev(cfg));
struct ieee80211_channel *band_chan_arr;
@ -5100,7 +5101,6 @@ static s32 brcmf_construct_reginfo(struct brcmf_cfg80211_info *cfg, u32 bw_cap)
enum ieee80211_band band;
u32 channel;
u32 *n_cnt;
bool ht40_allowed;
u32 index;
u32 ht40_flag;
bool update;
@ -5133,18 +5133,17 @@ static s32 brcmf_construct_reginfo(struct brcmf_cfg80211_info *cfg, u32 bw_cap)
array_size = ARRAY_SIZE(__wl_2ghz_channels);
n_cnt = &__wl_band_2ghz.n_channels;
band = IEEE80211_BAND_2GHZ;
ht40_allowed = (bw_cap == WLC_N_BW_40ALL);
} else if (ch.band == BRCMU_CHAN_BAND_5G) {
band_chan_arr = __wl_5ghz_a_channels;
array_size = ARRAY_SIZE(__wl_5ghz_a_channels);
n_cnt = &__wl_band_5ghz_a.n_channels;
band = IEEE80211_BAND_5GHZ;
ht40_allowed = !(bw_cap == WLC_N_BW_20ALL);
} else {
brcmf_err("Invalid channel Sepc. 0x%x.\n", ch.chspec);
brcmf_err("Invalid channel Spec. 0x%x.\n", ch.chspec);
continue;
}
if (!ht40_allowed && ch.bw == BRCMU_CHAN_BW_40)
if (!(bw_cap[band] & WLC_BW_40MHZ_BIT) &&
ch.bw == BRCMU_CHAN_BW_40)
continue;
update = false;
for (j = 0; (j < *n_cnt && (*n_cnt < array_size)); j++) {
@ -5162,7 +5161,10 @@ static s32 brcmf_construct_reginfo(struct brcmf_cfg80211_info *cfg, u32 bw_cap)
ieee80211_channel_to_frequency(ch.chnum, band);
band_chan_arr[index].hw_value = ch.chnum;
if (ch.bw == BRCMU_CHAN_BW_40 && ht40_allowed) {
brcmf_err("channel %d: f=%d bw=%d sb=%d\n",
ch.chnum, band_chan_arr[index].center_freq,
ch.bw, ch.sb);
if (ch.bw == BRCMU_CHAN_BW_40) {
/* assuming the order is HT20, HT40 Upper,
* HT40 lower from chanspecs
*/
@ -5213,6 +5215,46 @@ exit:
return err;
}
static void brcmf_get_bwcap(struct brcmf_if *ifp, u32 bw_cap[])
{
u32 band, mimo_bwcap;
int err;
band = WLC_BAND_2G;
err = brcmf_fil_iovar_int_get(ifp, "bw_cap", &band);
if (!err) {
bw_cap[IEEE80211_BAND_2GHZ] = band;
band = WLC_BAND_5G;
err = brcmf_fil_iovar_int_get(ifp, "bw_cap", &band);
if (!err) {
bw_cap[IEEE80211_BAND_5GHZ] = band;
return;
}
WARN_ON(1);
return;
}
brcmf_dbg(INFO, "fallback to mimo_bw_cap info\n");
mimo_bwcap = 0;
err = brcmf_fil_iovar_int_get(ifp, "mimo_bw_cap", &mimo_bwcap);
if (err)
/* assume 20MHz if firmware does not give a clue */
mimo_bwcap = WLC_N_BW_20ALL;
switch (mimo_bwcap) {
case WLC_N_BW_40ALL:
bw_cap[IEEE80211_BAND_2GHZ] |= WLC_BW_40MHZ_BIT;
/* fall-thru */
case WLC_N_BW_20IN2G_40IN5G:
bw_cap[IEEE80211_BAND_5GHZ] |= WLC_BW_40MHZ_BIT;
/* fall-thru */
case WLC_N_BW_20ALL:
bw_cap[IEEE80211_BAND_2GHZ] |= WLC_BW_20MHZ_BIT;
bw_cap[IEEE80211_BAND_5GHZ] |= WLC_BW_20MHZ_BIT;
break;
default:
brcmf_err("invalid mimo_bw_cap value\n");
}
}
static s32 brcmf_update_wiphybands(struct brcmf_cfg80211_info *cfg)
{
@ -5221,13 +5263,13 @@ static s32 brcmf_update_wiphybands(struct brcmf_cfg80211_info *cfg)
s32 phy_list;
u32 band_list[3];
u32 nmode;
u32 bw_cap = 0;
u32 bw_cap[2] = { 0, 0 };
s8 phy;
s32 err;
u32 nband;
s32 i;
struct ieee80211_supported_band *bands[IEEE80211_NUM_BANDS];
s32 index;
struct ieee80211_supported_band *bands[2] = { NULL, NULL };
struct ieee80211_supported_band *band;
err = brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_PHYLIST,
&phy_list, sizeof(phy_list));
@ -5253,11 +5295,10 @@ static s32 brcmf_update_wiphybands(struct brcmf_cfg80211_info *cfg)
if (err) {
brcmf_err("nmode error (%d)\n", err);
} else {
err = brcmf_fil_iovar_int_get(ifp, "mimo_bw_cap", &bw_cap);
if (err)
brcmf_err("mimo_bw_cap error (%d)\n", err);
brcmf_get_bwcap(ifp, bw_cap);
}
brcmf_dbg(INFO, "nmode=%d, mimo_bw_cap=%d\n", nmode, bw_cap);
brcmf_dbg(INFO, "nmode=%d, bw_cap=(%d, %d)\n", nmode,
bw_cap[IEEE80211_BAND_2GHZ], bw_cap[IEEE80211_BAND_5GHZ]);
err = brcmf_construct_reginfo(cfg, bw_cap);
if (err) {
@ -5266,40 +5307,33 @@ static s32 brcmf_update_wiphybands(struct brcmf_cfg80211_info *cfg)
}
nband = band_list[0];
memset(bands, 0, sizeof(bands));
for (i = 1; i <= nband && i < ARRAY_SIZE(band_list); i++) {
index = -1;
band = NULL;
if ((band_list[i] == WLC_BAND_5G) &&
(__wl_band_5ghz_a.n_channels > 0)) {
index = IEEE80211_BAND_5GHZ;
bands[index] = &__wl_band_5ghz_a;
if ((bw_cap == WLC_N_BW_40ALL) ||
(bw_cap == WLC_N_BW_20IN2G_40IN5G))
bands[index]->ht_cap.cap |=
IEEE80211_HT_CAP_SGI_40;
} else if ((band_list[i] == WLC_BAND_2G) &&
(__wl_band_2ghz.n_channels > 0)) {
index = IEEE80211_BAND_2GHZ;
bands[index] = &__wl_band_2ghz;
if (bw_cap == WLC_N_BW_40ALL)
bands[index]->ht_cap.cap |=
IEEE80211_HT_CAP_SGI_40;
}
(__wl_band_5ghz_a.n_channels > 0))
band = &__wl_band_5ghz_a;
else if ((band_list[i] == WLC_BAND_2G) &&
(__wl_band_2ghz.n_channels > 0))
band = &__wl_band_2ghz;
else
continue;
if ((index >= 0) && nmode) {
bands[index]->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
bands[index]->ht_cap.cap |= IEEE80211_HT_CAP_DSSSCCK40;
bands[index]->ht_cap.ht_supported = true;
bands[index]->ht_cap.ampdu_factor =
IEEE80211_HT_MAX_AMPDU_64K;
bands[index]->ht_cap.ampdu_density =
IEEE80211_HT_MPDU_DENSITY_16;
/* An HT shall support all EQM rates for one spatial
* stream
*/
bands[index]->ht_cap.mcs.rx_mask[0] = 0xff;
if (bw_cap[band->band] & WLC_BW_40MHZ_BIT) {
band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
}
band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
band->ht_cap.cap |= IEEE80211_HT_CAP_DSSSCCK40;
band->ht_cap.ht_supported = true;
band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_16;
/* An HT shall support all EQM rates for one spatial
* stream
*/
band->ht_cap.mcs.rx_mask[0] = 0xff;
band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
bands[band->band] = band;
}
wiphy = cfg_to_wiphy(cfg);

14
drivers/net/wireless/brcm80211/include/brcmu_wifi.h
View File

@ -82,6 +82,20 @@
#define WLC_N_BW_40ALL 1
#define WLC_N_BW_20IN2G_40IN5G 2
#define WLC_BW_20MHZ_BIT BIT(0)
#define WLC_BW_40MHZ_BIT BIT(1)
#define WLC_BW_80MHZ_BIT BIT(2)
#define WLC_BW_160MHZ_BIT BIT(3)
/* Bandwidth capabilities */
#define WLC_BW_CAP_20MHZ (WLC_BW_20MHZ_BIT)
#define WLC_BW_CAP_40MHZ (WLC_BW_40MHZ_BIT|WLC_BW_20MHZ_BIT)
#define WLC_BW_CAP_80MHZ (WLC_BW_80MHZ_BIT|WLC_BW_40MHZ_BIT| \
WLC_BW_20MHZ_BIT)
#define WLC_BW_CAP_160MHZ (WLC_BW_160MHZ_BIT|WLC_BW_80MHZ_BIT| \
WLC_BW_40MHZ_BIT|WLC_BW_20MHZ_BIT)
#define WLC_BW_CAP_UNRESTRICTED 0xFF
/* band types */
#define WLC_BAND_AUTO 0 /* auto-select */
#define WLC_BAND_5G 1 /* 5 Ghz */