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iwlwifi: mvm: remove MIMO3 from rate scale code

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Current and future chips supported by mvm will only have a maximum
of 2 antennas so all the MIMO3 related code and states can be dropped.

Signed-off-by: Eyal Shapira <eyal@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Eyal Shapira 2013-07-28 23:02:45 +00:00 committed by Johannes Berg
parent e3c588ec0d
commit d972ab31b9
2 changed files with 45 additions and 389 deletions
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393
drivers/net/wireless/iwlwifi/mvm/rs.c
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@ -86,7 +86,6 @@ static const u8 ant_toggle_lookup[] = {
[IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP, \
IWL_RATE_SISO_##s##M_PLCP, \
IWL_RATE_MIMO2_##s##M_PLCP,\
IWL_RATE_MIMO3_##s##M_PLCP,\
IWL_RATE_##rp##M_INDEX, \
IWL_RATE_##rn##M_INDEX }
@ -129,9 +128,8 @@ static int iwl_hwrate_to_plcp_idx(u32 rate_n_flags)
if (rate_n_flags & RATE_MCS_HT_MSK) {
idx = rs_extract_rate(rate_n_flags);
if (idx >= IWL_RATE_MIMO3_6M_PLCP)
idx = idx - IWL_RATE_MIMO3_6M_PLCP;
else if (idx >= IWL_RATE_MIMO2_6M_PLCP)
WARN_ON_ONCE(idx >= IWL_RATE_MIMO3_6M_PLCP);
if (idx >= IWL_RATE_MIMO2_6M_PLCP)
idx = idx - IWL_RATE_MIMO2_6M_PLCP;
idx += IWL_FIRST_OFDM_RATE;
@ -213,20 +211,6 @@ static s32 expected_tpt_mimo2_40MHz[4][IWL_RATE_COUNT] = {
{0, 0, 0, 0, 186, 0, 329, 439, 527, 667, 764, 803, 838}, /* AGG+SGI */
};
static s32 expected_tpt_mimo3_20MHz[4][IWL_RATE_COUNT] = {
{0, 0, 0, 0, 99, 0, 153, 186, 208, 239, 256, 263, 268}, /* Norm */
{0, 0, 0, 0, 106, 0, 162, 194, 215, 246, 262, 268, 273}, /* SGI */
{0, 0, 0, 0, 134, 0, 249, 346, 431, 574, 685, 732, 775}, /* AGG */
{0, 0, 0, 0, 148, 0, 272, 376, 465, 614, 727, 775, 818}, /* AGG+SGI */
};
static s32 expected_tpt_mimo3_40MHz[4][IWL_RATE_COUNT] = {
{0, 0, 0, 0, 152, 0, 211, 239, 255, 279, 290, 294, 297}, /* Norm */
{0, 0, 0, 0, 160, 0, 219, 245, 261, 284, 294, 297, 300}, /* SGI */
{0, 0, 0, 0, 254, 0, 443, 584, 695, 868, 984, 1030, 1070}, /* AGG */
{0, 0, 0, 0, 277, 0, 478, 624, 737, 911, 1026, 1070, 1109}, /* AGG+SGI */
};
/* mbps, mcs */
static const struct iwl_rate_mcs_info iwl_rate_mcs[IWL_RATE_COUNT] = {
{ "1", "BPSK DSSS"},
@ -274,7 +258,6 @@ static void rs_program_fix_rate(struct iwl_mvm *mvm,
lq_sta->active_legacy_rate = 0x0FFF; /* 1 - 54 MBits, includes CCK */
lq_sta->active_siso_rate = 0x1FD0; /* 6 - 60 MBits, no 9, no CCK */
lq_sta->active_mimo2_rate = 0x1FD0; /* 6 - 60 MBits, no 9, no CCK */
lq_sta->active_mimo3_rate = 0x1FD0; /* 6 - 60 MBits, no 9, no CCK */
IWL_DEBUG_RATE(mvm, "sta_id %d rate 0x%X\n",
lq_sta->lq.sta_id, lq_sta->dbg_fixed_rate);
@ -454,7 +437,7 @@ static u32 rate_n_flags_from_tbl(struct iwl_mvm *mvm,
else if (is_mimo2(tbl->lq_type))
rate_n_flags |= iwl_rates[index].plcp_mimo2;
else
rate_n_flags |= iwl_rates[index].plcp_mimo3;
WARN_ON_ONCE(1);
} else {
IWL_ERR(mvm, "Invalid tbl->lq_type %d\n", tbl->lq_type);
}
@ -531,12 +514,8 @@ static int rs_get_tbl_info_from_mcs(const u32 rate_n_flags,
} else if (mcs <= IWL_RATE_MIMO2_60M_PLCP) {
if (num_of_ant == 2)
tbl->lq_type = LQ_MIMO2;
/* MIMO3 */
} else {
if (num_of_ant == 3) {
tbl->max_search = IWL_MAX_11N_MIMO3_SEARCH;
tbl->lq_type = LQ_MIMO3;
}
WARN_ON_ONCE(num_of_ant == 3);
}
}
return 0;
@ -602,10 +581,10 @@ static u16 rs_get_supported_rates(struct iwl_lq_sta *lq_sta,
} else {
if (is_siso(rate_type))
return lq_sta->active_siso_rate;
else if (is_mimo2(rate_type))
else {
WARN_ON_ONCE(!is_mimo2(rate_type));
return lq_sta->active_mimo2_rate;
else
return lq_sta->active_mimo3_rate;
}
}
}
@ -980,7 +959,7 @@ static void rs_set_expected_tpt_table(struct iwl_lq_sta *lq_sta,
}
/* Choose among many HT tables depending on number of streams
* (SISO/MIMO2/MIMO3), channel width (20/40), SGI, and aggregation
* (SISO/MIMO2), channel width (20/40), SGI, and aggregation
* status */
if (is_siso(tbl->lq_type) && !tbl->is_ht40)
ht_tbl_pointer = expected_tpt_siso20MHz;
@ -988,12 +967,10 @@ static void rs_set_expected_tpt_table(struct iwl_lq_sta *lq_sta,
ht_tbl_pointer = expected_tpt_siso40MHz;
else if (is_mimo2(tbl->lq_type) && !tbl->is_ht40)
ht_tbl_pointer = expected_tpt_mimo2_20MHz;
else if (is_mimo2(tbl->lq_type))
else {
WARN_ON_ONCE(!is_mimo2(tbl->lq_type));
ht_tbl_pointer = expected_tpt_mimo2_40MHz;
else if (is_mimo3(tbl->lq_type) && !tbl->is_ht40)
ht_tbl_pointer = expected_tpt_mimo3_20MHz;
else /* if (is_mimo3(tbl->lq_type)) <-- must be true */
ht_tbl_pointer = expected_tpt_mimo3_40MHz;
}
if (!tbl->is_SGI && !lq_sta->is_agg) /* Normal */
tbl->expected_tpt = ht_tbl_pointer[0];
@ -1164,58 +1141,6 @@ static int rs_switch_to_mimo2(struct iwl_mvm *mvm,
return 0;
}
/*
* Set up search table for MIMO3
*/
static int rs_switch_to_mimo3(struct iwl_mvm *mvm,
struct iwl_lq_sta *lq_sta,
struct ieee80211_sta *sta,
struct iwl_scale_tbl_info *tbl, int index)
{
u16 rate_mask;
s32 rate;
s8 is_green = lq_sta->is_green;
if (!sta->ht_cap.ht_supported)
return -1;
if (sta->smps_mode == IEEE80211_SMPS_STATIC)
return -1;
/* Need both Tx chains/antennas to support MIMO */
if (num_of_ant(iwl_fw_valid_tx_ant(mvm->fw)) < 3)
return -1;
IWL_DEBUG_RATE(mvm, "LQ: try to switch to MIMO3\n");
tbl->lq_type = LQ_MIMO3;
tbl->action = 0;
tbl->max_search = IWL_MAX_11N_MIMO3_SEARCH;
rate_mask = lq_sta->active_mimo3_rate;
if (iwl_is_ht40_tx_allowed(sta))
tbl->is_ht40 = 1;
else
tbl->is_ht40 = 0;
rs_set_expected_tpt_table(lq_sta, tbl);
rate = rs_get_best_rate(mvm, lq_sta, tbl, rate_mask, index);
IWL_DEBUG_RATE(mvm, "LQ: MIMO3 best rate %d mask %X\n",
rate, rate_mask);
if ((rate == IWL_RATE_INVALID) || !((1 << rate) & rate_mask)) {
IWL_DEBUG_RATE(mvm, "Can't switch with index %d rate mask %x\n",
rate, rate_mask);
return -1;
}
tbl->current_rate = rate_n_flags_from_tbl(mvm, tbl, rate, is_green);
IWL_DEBUG_RATE(mvm, "LQ: Switch to new mcs %X index is green %X\n",
tbl->current_rate, is_green);
return 0;
}
/*
* Set up search table for SISO
*/
@ -1325,21 +1250,14 @@ static int rs_move_legacy_other(struct iwl_mvm *mvm,
}
break;
case IWL_LEGACY_SWITCH_MIMO2_AB:
case IWL_LEGACY_SWITCH_MIMO2_AC:
case IWL_LEGACY_SWITCH_MIMO2_BC:
case IWL_LEGACY_SWITCH_MIMO2:
IWL_DEBUG_RATE(mvm, "LQ: Legacy switch to MIMO2\n");
/* Set up search table to try MIMO */
memcpy(search_tbl, tbl, sz);
search_tbl->is_SGI = 0;
if (tbl->action == IWL_LEGACY_SWITCH_MIMO2_AB)
search_tbl->ant_type = ANT_AB;
else if (tbl->action == IWL_LEGACY_SWITCH_MIMO2_AC)
search_tbl->ant_type = ANT_AC;
else
search_tbl->ant_type = ANT_BC;
search_tbl->ant_type = ANT_AB;
if (!rs_is_valid_ant(valid_tx_ant,
search_tbl->ant_type))
@ -1352,30 +1270,11 @@ static int rs_move_legacy_other(struct iwl_mvm *mvm,
goto out;
}
break;
case IWL_LEGACY_SWITCH_MIMO3_ABC:
IWL_DEBUG_RATE(mvm, "LQ: Legacy switch to MIMO3\n");
/* Set up search table to try MIMO3 */
memcpy(search_tbl, tbl, sz);
search_tbl->is_SGI = 0;
search_tbl->ant_type = ANT_ABC;
if (!rs_is_valid_ant(valid_tx_ant,
search_tbl->ant_type))
break;
ret = rs_switch_to_mimo3(mvm, lq_sta, sta,
search_tbl, index);
if (!ret) {
lq_sta->action_counter = 0;
goto out;
}
break;
default:
WARN_ON_ONCE(1);
}
tbl->action++;
if (tbl->action > IWL_LEGACY_SWITCH_MIMO3_ABC)
if (tbl->action > IWL_LEGACY_SWITCH_MIMO2)
tbl->action = IWL_LEGACY_SWITCH_ANTENNA1;
if (tbl->action == start_action)
@ -1387,7 +1286,7 @@ static int rs_move_legacy_other(struct iwl_mvm *mvm,
out:
lq_sta->search_better_tbl = 1;
tbl->action++;
if (tbl->action > IWL_LEGACY_SWITCH_MIMO3_ABC)
if (tbl->action > IWL_LEGACY_SWITCH_MIMO2)
tbl->action = IWL_LEGACY_SWITCH_ANTENNA1;
if (update_search_tbl_counter)
search_tbl->action = tbl->action;
@ -1422,7 +1321,7 @@ static int rs_move_siso_to_other(struct iwl_mvm *mvm,
case IWL_BT_COEX_TRAFFIC_LOAD_LOW:
/* avoid antenna B unless MIMO */
if (tbl->action == IWL_SISO_SWITCH_ANTENNA2)
tbl->action = IWL_SISO_SWITCH_MIMO2_AB;
tbl->action = IWL_SISO_SWITCH_MIMO2;
break;
case IWL_BT_COEX_TRAFFIC_LOAD_HIGH:
case IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS:
@ -1464,19 +1363,12 @@ static int rs_move_siso_to_other(struct iwl_mvm *mvm,
goto out;
}
break;
case IWL_SISO_SWITCH_MIMO2_AB:
case IWL_SISO_SWITCH_MIMO2_AC:
case IWL_SISO_SWITCH_MIMO2_BC:
case IWL_SISO_SWITCH_MIMO2:
IWL_DEBUG_RATE(mvm, "LQ: SISO switch to MIMO2\n");
memcpy(search_tbl, tbl, sz);
search_tbl->is_SGI = 0;
if (tbl->action == IWL_SISO_SWITCH_MIMO2_AB)
search_tbl->ant_type = ANT_AB;
else if (tbl->action == IWL_SISO_SWITCH_MIMO2_AC)
search_tbl->ant_type = ANT_AC;
else
search_tbl->ant_type = ANT_BC;
search_tbl->ant_type = ANT_AB;
if (!rs_is_valid_ant(valid_tx_ant,
search_tbl->ant_type))
@ -1517,24 +1409,11 @@ static int rs_move_siso_to_other(struct iwl_mvm *mvm,
index, is_green);
update_search_tbl_counter = 1;
goto out;
case IWL_SISO_SWITCH_MIMO3_ABC:
IWL_DEBUG_RATE(mvm, "LQ: SISO switch to MIMO3\n");
memcpy(search_tbl, tbl, sz);
search_tbl->is_SGI = 0;
search_tbl->ant_type = ANT_ABC;
if (!rs_is_valid_ant(valid_tx_ant,
search_tbl->ant_type))
break;
ret = rs_switch_to_mimo3(mvm, lq_sta, sta,
search_tbl, index);
if (!ret)
goto out;
break;
default:
WARN_ON_ONCE(1);
}
tbl->action++;
if (tbl->action > IWL_LEGACY_SWITCH_MIMO3_ABC)
if (tbl->action > IWL_SISO_SWITCH_GI)
tbl->action = IWL_SISO_SWITCH_ANTENNA1;
if (tbl->action == start_action)
@ -1546,7 +1425,7 @@ static int rs_move_siso_to_other(struct iwl_mvm *mvm,
out:
lq_sta->search_better_tbl = 1;
tbl->action++;
if (tbl->action > IWL_SISO_SWITCH_MIMO3_ABC)
if (tbl->action > IWL_SISO_SWITCH_GI)
tbl->action = IWL_SISO_SWITCH_ANTENNA1;
if (update_search_tbl_counter)
search_tbl->action = tbl->action;
@ -1587,8 +1466,7 @@ static int rs_move_mimo2_to_other(struct iwl_mvm *mvm,
break;
case IWL_BT_COEX_TRAFFIC_LOAD_LOW:
/* avoid antenna B unless MIMO */
if (tbl->action == IWL_MIMO2_SWITCH_SISO_B ||
tbl->action == IWL_MIMO2_SWITCH_SISO_C)
if (tbl->action == IWL_MIMO2_SWITCH_SISO_B)
tbl->action = IWL_MIMO2_SWITCH_SISO_A;
break;
default:
@ -1621,7 +1499,6 @@ static int rs_move_mimo2_to_other(struct iwl_mvm *mvm,
break;
case IWL_MIMO2_SWITCH_SISO_A:
case IWL_MIMO2_SWITCH_SISO_B:
case IWL_MIMO2_SWITCH_SISO_C:
IWL_DEBUG_RATE(mvm, "LQ: MIMO2 switch to SISO\n");
/* Set up new search table for SISO */
@ -1629,10 +1506,8 @@ static int rs_move_mimo2_to_other(struct iwl_mvm *mvm,
if (tbl->action == IWL_MIMO2_SWITCH_SISO_A)
search_tbl->ant_type = ANT_A;
else if (tbl->action == IWL_MIMO2_SWITCH_SISO_B)
else /* tbl->action == IWL_MIMO2_SWITCH_SISO_B */
search_tbl->ant_type = ANT_B;
else
search_tbl->ant_type = ANT_C;
if (!rs_is_valid_ant(valid_tx_ant,
search_tbl->ant_type))
@ -1675,26 +1550,11 @@ static int rs_move_mimo2_to_other(struct iwl_mvm *mvm,
index, is_green);
update_search_tbl_counter = 1;
goto out;
case IWL_MIMO2_SWITCH_MIMO3_ABC:
IWL_DEBUG_RATE(mvm, "LQ: MIMO2 switch to MIMO3\n");
memcpy(search_tbl, tbl, sz);
search_tbl->is_SGI = 0;
search_tbl->ant_type = ANT_ABC;
if (!rs_is_valid_ant(valid_tx_ant,
search_tbl->ant_type))
break;
ret = rs_switch_to_mimo3(mvm, lq_sta, sta,
search_tbl, index);
if (!ret)
goto out;
break;
default:
WARN_ON_ONCE(1);
}
tbl->action++;
if (tbl->action > IWL_MIMO2_SWITCH_MIMO3_ABC)
if (tbl->action > IWL_MIMO2_SWITCH_GI)
tbl->action = IWL_MIMO2_SWITCH_ANTENNA1;
if (tbl->action == start_action)
@ -1705,7 +1565,7 @@ static int rs_move_mimo2_to_other(struct iwl_mvm *mvm,
out:
lq_sta->search_better_tbl = 1;
tbl->action++;
if (tbl->action > IWL_MIMO2_SWITCH_MIMO3_ABC)
if (tbl->action > IWL_MIMO2_SWITCH_GI)
tbl->action = IWL_MIMO2_SWITCH_ANTENNA1;
if (update_search_tbl_counter)
search_tbl->action = tbl->action;
@ -1713,171 +1573,6 @@ static int rs_move_mimo2_to_other(struct iwl_mvm *mvm,
return 0;
}
/*
* Try to switch to new modulation mode from MIMO3
*/
static int rs_move_mimo3_to_other(struct iwl_mvm *mvm,
struct iwl_lq_sta *lq_sta,
struct ieee80211_sta *sta, int index)
{
s8 is_green = lq_sta->is_green;
struct iwl_scale_tbl_info *tbl = &(lq_sta->lq_info[lq_sta->active_tbl]);
struct iwl_scale_tbl_info *search_tbl =
&(lq_sta->lq_info[(1 - lq_sta->active_tbl)]);
struct iwl_rate_scale_data *window = &(tbl->win[index]);
struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
u32 sz = (sizeof(struct iwl_scale_tbl_info) -
(sizeof(struct iwl_rate_scale_data) * IWL_RATE_COUNT));
u8 start_action;
u8 valid_tx_ant = iwl_fw_valid_tx_ant(mvm->fw);
u8 tx_chains_num = num_of_ant(valid_tx_ant);
int ret;
u8 update_search_tbl_counter = 0;
switch (BT_MBOX_MSG(&mvm->last_bt_notif, 3, TRAFFIC_LOAD)) {
case IWL_BT_COEX_TRAFFIC_LOAD_NONE:
/* nothing */
break;
case IWL_BT_COEX_TRAFFIC_LOAD_HIGH:
case IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS:
/* avoid antenna B and MIMO */
if (tbl->action != IWL_MIMO3_SWITCH_SISO_A)
tbl->action = IWL_MIMO3_SWITCH_SISO_A;
break;
case IWL_BT_COEX_TRAFFIC_LOAD_LOW:
/* avoid antenna B unless MIMO */
if (tbl->action == IWL_MIMO3_SWITCH_SISO_B ||
tbl->action == IWL_MIMO3_SWITCH_SISO_C)
tbl->action = IWL_MIMO3_SWITCH_SISO_A;
break;
default:
IWL_ERR(mvm, "Invalid BT load %d",
BT_MBOX_MSG(&mvm->last_bt_notif, 3, TRAFFIC_LOAD));
break;
}
start_action = tbl->action;
while (1) {
lq_sta->action_counter++;
switch (tbl->action) {
case IWL_MIMO3_SWITCH_ANTENNA1:
case IWL_MIMO3_SWITCH_ANTENNA2:
IWL_DEBUG_RATE(mvm, "LQ: MIMO3 toggle Antennas\n");
if (tx_chains_num <= 3)
break;
if (window->success_ratio >= IWL_RS_GOOD_RATIO)
break;
memcpy(search_tbl, tbl, sz);
if (rs_toggle_antenna(valid_tx_ant,
&search_tbl->current_rate,
search_tbl))
goto out;
break;
case IWL_MIMO3_SWITCH_SISO_A:
case IWL_MIMO3_SWITCH_SISO_B:
case IWL_MIMO3_SWITCH_SISO_C:
IWL_DEBUG_RATE(mvm, "LQ: MIMO3 switch to SISO\n");
/* Set up new search table for SISO */
memcpy(search_tbl, tbl, sz);
if (tbl->action == IWL_MIMO3_SWITCH_SISO_A)
search_tbl->ant_type = ANT_A;
else if (tbl->action == IWL_MIMO3_SWITCH_SISO_B)
search_tbl->ant_type = ANT_B;
else
search_tbl->ant_type = ANT_C;
if (!rs_is_valid_ant(valid_tx_ant,
search_tbl->ant_type))
break;
ret = rs_switch_to_siso(mvm, lq_sta, sta,
search_tbl, index);
if (!ret)
goto out;
break;
case IWL_MIMO3_SWITCH_MIMO2_AB:
case IWL_MIMO3_SWITCH_MIMO2_AC:
case IWL_MIMO3_SWITCH_MIMO2_BC:
IWL_DEBUG_RATE(mvm, "LQ: MIMO3 switch to MIMO2\n");
memcpy(search_tbl, tbl, sz);
search_tbl->is_SGI = 0;
if (tbl->action == IWL_MIMO3_SWITCH_MIMO2_AB)
search_tbl->ant_type = ANT_AB;
else if (tbl->action == IWL_MIMO3_SWITCH_MIMO2_AC)
search_tbl->ant_type = ANT_AC;
else
search_tbl->ant_type = ANT_BC;
if (!rs_is_valid_ant(valid_tx_ant,
search_tbl->ant_type))
break;
ret = rs_switch_to_mimo2(mvm, lq_sta, sta,
search_tbl, index);
if (!ret)
goto out;
break;
case IWL_MIMO3_SWITCH_GI:
if (!tbl->is_ht40 && !(ht_cap->cap &
IEEE80211_HT_CAP_SGI_20))
break;
if (tbl->is_ht40 && !(ht_cap->cap &
IEEE80211_HT_CAP_SGI_40))
break;
IWL_DEBUG_RATE(mvm, "LQ: MIMO3 toggle SGI/NGI\n");
/* Set up new search table for MIMO */
memcpy(search_tbl, tbl, sz);
search_tbl->is_SGI = !tbl->is_SGI;
rs_set_expected_tpt_table(lq_sta, search_tbl);
/*
* If active table already uses the fastest possible
* modulation (dual stream with short guard interval),
* and it's working well, there's no need to look
* for a better type of modulation!
*/
if (tbl->is_SGI) {
s32 tpt = lq_sta->last_tpt / 100;
if (tpt >= search_tbl->expected_tpt[index])
break;
}
search_tbl->current_rate =
rate_n_flags_from_tbl(mvm, search_tbl,
index, is_green);
update_search_tbl_counter = 1;
goto out;
}
tbl->action++;
if (tbl->action > IWL_MIMO3_SWITCH_GI)
tbl->action = IWL_MIMO3_SWITCH_ANTENNA1;
if (tbl->action == start_action)
break;
}
search_tbl->lq_type = LQ_NONE;
return 0;
out:
lq_sta->search_better_tbl = 1;
tbl->action++;
if (tbl->action > IWL_MIMO3_SWITCH_GI)
tbl->action = IWL_MIMO3_SWITCH_ANTENNA1;
if (update_search_tbl_counter)
search_tbl->action = tbl->action;
return 0;
}
/*
* Check whether we should continue using same modulation mode, or
* begin search for a new mode, based on:
@ -2284,8 +1979,7 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm,
scale_action = 0;
if ((BT_MBOX_MSG(&mvm->last_bt_notif, 3, TRAFFIC_LOAD) >=
IWL_BT_COEX_TRAFFIC_LOAD_HIGH) &&
(is_mimo2(tbl->lq_type) || is_mimo3(tbl->lq_type))) {
IWL_BT_COEX_TRAFFIC_LOAD_HIGH) && (is_mimo(tbl->lq_type))) {
if (lq_sta->last_bt_traffic >
BT_MBOX_MSG(&mvm->last_bt_notif, 3, TRAFFIC_LOAD)) {
/*
@ -2302,8 +1996,7 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm,
BT_MBOX_MSG(&mvm->last_bt_notif, 3, TRAFFIC_LOAD);
if ((BT_MBOX_MSG(&mvm->last_bt_notif, 3, TRAFFIC_LOAD) >=
IWL_BT_COEX_TRAFFIC_LOAD_HIGH) &&
(is_mimo2(tbl->lq_type) || is_mimo3(tbl->lq_type))) {
IWL_BT_COEX_TRAFFIC_LOAD_HIGH) && is_mimo(tbl->lq_type)) {
/* search for a new modulation */
rs_stay_in_table(lq_sta, true);
goto lq_update;
@ -2363,7 +2056,7 @@ static void rs_rate_scale_perform(struct iwl_mvm *mvm,
else if (is_mimo2(tbl->lq_type))
rs_move_mimo2_to_other(mvm, lq_sta, sta, index);
else
rs_move_mimo3_to_other(mvm, lq_sta, sta, index);
WARN_ON_ONCE(1);
/* If new "search" mode was selected, set up in uCode table */
if (lq_sta->search_better_tbl) {
@ -2528,11 +2221,10 @@ static void rs_get_rate(void *mvm_r, struct ieee80211_sta *sta, void *mvm_sta,
rate_idx -= IWL_FIRST_OFDM_RATE;
/* 6M and 9M shared same MCS index */
rate_idx = (rate_idx > 0) ? (rate_idx - 1) : 0;
WARN_ON_ONCE(rs_extract_rate(lq_sta->last_rate_n_flags) >=
IWL_RATE_MIMO3_6M_PLCP);
if (rs_extract_rate(lq_sta->last_rate_n_flags) >=
IWL_RATE_MIMO3_6M_PLCP)
rate_idx = rate_idx + (2 * MCS_INDEX_PER_STREAM);
else if (rs_extract_rate(lq_sta->last_rate_n_flags) >=
IWL_RATE_MIMO2_6M_PLCP)
IWL_RATE_MIMO2_6M_PLCP)
rate_idx = rate_idx + MCS_INDEX_PER_STREAM;
info->control.rates[0].flags = IEEE80211_TX_RC_MCS;
if (lq_sta->last_rate_n_flags & RATE_MCS_SGI_MSK)
@ -2631,16 +2323,10 @@ void iwl_mvm_rs_rate_init(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
lq_sta->active_mimo2_rate &= ~((u16)0x2);
lq_sta->active_mimo2_rate <<= IWL_FIRST_OFDM_RATE;
lq_sta->active_mimo3_rate = ht_cap->mcs.rx_mask[2] << 1;
lq_sta->active_mimo3_rate |= ht_cap->mcs.rx_mask[2] & 0x1;
lq_sta->active_mimo3_rate &= ~((u16)0x2);
lq_sta->active_mimo3_rate <<= IWL_FIRST_OFDM_RATE;
IWL_DEBUG_RATE(mvm,
"SISO-RATE=%X MIMO2-RATE=%X MIMO3-RATE=%X\n",
"SISO-RATE=%X MIMO2-RATE=%X\n",
lq_sta->active_siso_rate,
lq_sta->active_mimo2_rate,
lq_sta->active_mimo3_rate);
lq_sta->active_mimo2_rate);
/* These values will be overridden later */
lq_sta->lq.single_stream_ant_msk =
@ -2903,8 +2589,7 @@ static ssize_t rs_sta_dbgfs_scale_table_read(struct file *file,
(is_legacy(tbl->lq_type)) ? "legacy" : "HT");
if (is_Ht(tbl->lq_type)) {
desc += sprintf(buff+desc, " %s",
(is_siso(tbl->lq_type)) ? "SISO" :
((is_mimo2(tbl->lq_type)) ? "MIMO2" : "MIMO3"));
(is_siso(tbl->lq_type)) ? "SISO" : "MIMO2");
desc += sprintf(buff+desc, " %s",
(tbl->is_ht40) ? "40MHz" : "20MHz");
desc += sprintf(buff+desc, " %s %s %s\n",

41
drivers/net/wireless/iwlwifi/mvm/rs.h
View File

@ -38,7 +38,6 @@ struct iwl_rs_rate_info {
u8 plcp; /* uCode API: IWL_RATE_6M_PLCP, etc. */
u8 plcp_siso; /* uCode API: IWL_RATE_SISO_6M_PLCP, etc. */
u8 plcp_mimo2; /* uCode API: IWL_RATE_MIMO2_6M_PLCP, etc. */
u8 plcp_mimo3; /* uCode API: IWL_RATE_MIMO3_6M_PLCP, etc. */
u8 prev_rs; /* previous rate used in rs algo */
u8 next_rs; /* next rate used in rs algo */
};
@ -143,47 +142,22 @@ enum {
#define IWL_LEGACY_SWITCH_ANTENNA1 0
#define IWL_LEGACY_SWITCH_ANTENNA2 1
#define IWL_LEGACY_SWITCH_SISO 2
#define IWL_LEGACY_SWITCH_MIMO2_AB 3
#define IWL_LEGACY_SWITCH_MIMO2_AC 4
#define IWL_LEGACY_SWITCH_MIMO2_BC 5
#define IWL_LEGACY_SWITCH_MIMO3_ABC 6
#define IWL_LEGACY_SWITCH_MIMO2 3
/* possible actions when in siso mode */
#define IWL_SISO_SWITCH_ANTENNA1 0
#define IWL_SISO_SWITCH_ANTENNA2 1
#define IWL_SISO_SWITCH_MIMO2_AB 2
#define IWL_SISO_SWITCH_MIMO2_AC 3
#define IWL_SISO_SWITCH_MIMO2_BC 4
#define IWL_SISO_SWITCH_GI 5
#define IWL_SISO_SWITCH_MIMO3_ABC 6
#define IWL_SISO_SWITCH_MIMO2 2
#define IWL_SISO_SWITCH_GI 3
/* possible actions when in mimo mode */
#define IWL_MIMO2_SWITCH_ANTENNA1 0
#define IWL_MIMO2_SWITCH_ANTENNA2 1
#define IWL_MIMO2_SWITCH_SISO_A 2
#define IWL_MIMO2_SWITCH_SISO_B 3
#define IWL_MIMO2_SWITCH_SISO_C 4
#define IWL_MIMO2_SWITCH_GI 5
#define IWL_MIMO2_SWITCH_MIMO3_ABC 6
#define IWL_MIMO2_SWITCH_GI 4
/* possible actions when in mimo3 mode */
#define IWL_MIMO3_SWITCH_ANTENNA1 0
#define IWL_MIMO3_SWITCH_ANTENNA2 1
#define IWL_MIMO3_SWITCH_SISO_A 2
#define IWL_MIMO3_SWITCH_SISO_B 3
#define IWL_MIMO3_SWITCH_SISO_C 4
#define IWL_MIMO3_SWITCH_MIMO2_AB 5
#define IWL_MIMO3_SWITCH_MIMO2_AC 6
#define IWL_MIMO3_SWITCH_MIMO2_BC 7
#define IWL_MIMO3_SWITCH_GI 8
#define IWL_MAX_11N_MIMO3_SEARCH IWL_MIMO3_SWITCH_GI
#define IWL_MAX_SEARCH IWL_MIMO2_SWITCH_MIMO3_ABC
/*FIXME:RS:add possible actions for MIMO3*/
#define IWL_MAX_SEARCH IWL_MIMO2_SWITCH_GI
#define IWL_ACTION_LIMIT 3 /* # possible actions */
@ -218,15 +192,13 @@ enum iwl_table_type {
LQ_A,
LQ_SISO, /* high-throughput types */
LQ_MIMO2,
LQ_MIMO3,
LQ_MAX,
};
#define is_legacy(tbl) (((tbl) == LQ_G) || ((tbl) == LQ_A))
#define is_siso(tbl) ((tbl) == LQ_SISO)
#define is_mimo2(tbl) ((tbl) == LQ_MIMO2)
#define is_mimo3(tbl) ((tbl) == LQ_MIMO3)
#define is_mimo(tbl) (is_mimo2(tbl) || is_mimo3(tbl))
#define is_mimo(tbl) is_mimo2(tbl)
#define is_Ht(tbl) (is_siso(tbl) || is_mimo(tbl))
#define is_a_band(tbl) ((tbl) == LQ_A)
#define is_g_and(tbl) ((tbl) == LQ_G)
@ -298,7 +270,6 @@ struct iwl_lq_sta {
u16 active_legacy_rate;
u16 active_siso_rate;
u16 active_mimo2_rate;
u16 active_mimo3_rate;
s8 max_rate_idx; /* Max rate set by user */
u8 missed_rate_counter;