Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2010 Broadcom Corporation |
| 3 | * |
| 4 | * Permission to use, copy, modify, and/or distribute this software for any |
| 5 | * purpose with or without fee is hereby granted, provided that the above |
| 6 | * copyright notice and this permission notice appear in all copies. |
| 7 | * |
| 8 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 9 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 10 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| 11 | * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 12 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
| 13 | * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
| 14 | * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 15 | */ |
| 16 | |
Brett Rudley | 3327989 | 2010-10-01 18:03:27 -0700 | [diff] [blame] | 17 | #include <linux/kernel.h> |
Greg Kroah-Hartman | a1c16ed | 2010-10-21 11:17:44 -0700 | [diff] [blame^] | 18 | #include <wlc_cfg.h> |
Brett Rudley | 3327989 | 2010-10-01 18:03:27 -0700 | [diff] [blame] | 19 | #include <linuxver.h> |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 20 | #include <bcmdefs.h> |
| 21 | #include <osl.h> |
| 22 | #include <bcmutils.h> |
| 23 | #include <siutils.h> |
| 24 | #include <bcmendian.h> |
| 25 | #include <proto/802.11.h> |
| 26 | #include <wlioctl.h> |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 27 | #include <bcmwifi.h> |
| 28 | #include <d11.h> |
| 29 | #include <wlc_rate.h> |
| 30 | #include <wlc_pub.h> |
| 31 | #include <wlc_key.h> |
| 32 | #include <wlc_channel.h> |
| 33 | #include <wlc_bsscfg.h> |
| 34 | #include <wlc_mac80211.h> |
| 35 | #include <wlc_scb.h> |
| 36 | #include <wl_export.h> |
| 37 | #include <wlc_bmac.h> |
| 38 | #include <wlc_stf.h> |
| 39 | |
| 40 | #define WLC_STF_SS_STBC_RX(wlc) (WLCISNPHY(wlc->band) && \ |
| 41 | NREV_GT(wlc->band->phyrev, 3) && NREV_LE(wlc->band->phyrev, 6)) |
| 42 | |
Greg Kroah-Hartman | 562c885 | 2010-10-05 11:04:17 -0700 | [diff] [blame] | 43 | static s8 wlc_stf_stbc_rx_get(wlc_info_t *wlc); |
Greg Kroah-Hartman | 3e26416 | 2010-10-08 11:11:13 -0700 | [diff] [blame] | 44 | static bool wlc_stf_stbc_tx_set(wlc_info_t *wlc, s32 int_val); |
Greg Kroah-Hartman | 41feb5e | 2010-10-05 10:09:00 -0700 | [diff] [blame] | 45 | static int wlc_stf_txcore_set(wlc_info_t *wlc, u8 Nsts, u8 val); |
Jason Cooper | 7cc4a4c | 2010-09-14 09:45:30 -0400 | [diff] [blame] | 46 | static int wlc_stf_spatial_policy_set(wlc_info_t *wlc, int val); |
| 47 | static void wlc_stf_stbc_rx_ht_update(wlc_info_t *wlc, int val); |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 48 | |
Jason Cooper | 7cc4a4c | 2010-09-14 09:45:30 -0400 | [diff] [blame] | 49 | static void _wlc_stf_phy_txant_upd(wlc_info_t *wlc); |
Greg Kroah-Hartman | 7d4df48 | 2010-10-07 17:04:47 -0700 | [diff] [blame] | 50 | static u16 _wlc_stf_phytxchain_sel(wlc_info_t *wlc, ratespec_t rspec); |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 51 | |
| 52 | #define NSTS_1 1 |
| 53 | #define NSTS_2 2 |
| 54 | #define NSTS_3 3 |
| 55 | #define NSTS_4 4 |
Greg Kroah-Hartman | 41feb5e | 2010-10-05 10:09:00 -0700 | [diff] [blame] | 56 | const u8 txcore_default[5] = { |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 57 | (0), /* bitmap of the core enabled */ |
| 58 | (0x01), /* For Nsts = 1, enable core 1 */ |
| 59 | (0x03), /* For Nsts = 2, enable core 1 & 2 */ |
| 60 | (0x07), /* For Nsts = 3, enable core 1, 2 & 3 */ |
| 61 | (0x0f) /* For Nsts = 4, enable all cores */ |
| 62 | }; |
| 63 | |
Jason Cooper | 7cc4a4c | 2010-09-14 09:45:30 -0400 | [diff] [blame] | 64 | static void wlc_stf_stbc_rx_ht_update(wlc_info_t *wlc, int val) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 65 | { |
| 66 | ASSERT((val == HT_CAP_RX_STBC_NO) |
| 67 | || (val == HT_CAP_RX_STBC_ONE_STREAM)); |
| 68 | |
| 69 | /* MIMOPHYs rev3-6 cannot receive STBC with only one rx core active */ |
| 70 | if (WLC_STF_SS_STBC_RX(wlc)) { |
| 71 | if ((wlc->stf->rxstreams == 1) && (val != HT_CAP_RX_STBC_NO)) |
| 72 | return; |
| 73 | } |
| 74 | |
| 75 | wlc->ht_cap.cap &= ~HT_CAP_RX_STBC_MASK; |
| 76 | wlc->ht_cap.cap |= (val << HT_CAP_RX_STBC_SHIFT); |
| 77 | |
| 78 | if (wlc->pub->up) { |
| 79 | wlc_update_beacon(wlc); |
Greg Kroah-Hartman | 0f0881b | 2010-10-12 12:15:18 -0700 | [diff] [blame] | 80 | wlc_update_probe_resp(wlc, true); |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 81 | } |
| 82 | } |
| 83 | |
| 84 | /* every WLC_TEMPSENSE_PERIOD seconds temperature check to decide whether to turn on/off txchain */ |
Jason Cooper | 7cc4a4c | 2010-09-14 09:45:30 -0400 | [diff] [blame] | 85 | void wlc_tempsense_upd(wlc_info_t *wlc) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 86 | { |
| 87 | wlc_phy_t *pi = wlc->band->pi; |
| 88 | uint active_chains, txchain; |
| 89 | |
| 90 | /* Check if the chip is too hot. Disable one Tx chain, if it is */ |
| 91 | /* high 4 bits are for Rx chain, low 4 bits are for Tx chain */ |
| 92 | active_chains = wlc_phy_stf_chain_active_get(pi); |
| 93 | txchain = active_chains & 0xf; |
| 94 | |
| 95 | if (wlc->stf->txchain == wlc->stf->hw_txchain) { |
| 96 | if (txchain && (txchain < wlc->stf->hw_txchain)) { |
| 97 | /* turn off 1 tx chain */ |
Greg Kroah-Hartman | 0f0881b | 2010-10-12 12:15:18 -0700 | [diff] [blame] | 98 | wlc_stf_txchain_set(wlc, txchain, true); |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 99 | } |
| 100 | } else if (wlc->stf->txchain < wlc->stf->hw_txchain) { |
| 101 | if (txchain == wlc->stf->hw_txchain) { |
| 102 | /* turn back on txchain */ |
Greg Kroah-Hartman | 0f0881b | 2010-10-12 12:15:18 -0700 | [diff] [blame] | 103 | wlc_stf_txchain_set(wlc, txchain, true); |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 104 | } |
| 105 | } |
| 106 | } |
| 107 | |
| 108 | void |
Greg Kroah-Hartman | 7d4df48 | 2010-10-07 17:04:47 -0700 | [diff] [blame] | 109 | wlc_stf_ss_algo_channel_get(wlc_info_t *wlc, u16 *ss_algo_channel, |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 110 | chanspec_t chanspec) |
| 111 | { |
| 112 | tx_power_t power; |
Greg Kroah-Hartman | 41feb5e | 2010-10-05 10:09:00 -0700 | [diff] [blame] | 113 | u8 siso_mcs_id, cdd_mcs_id, stbc_mcs_id; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 114 | |
| 115 | /* Clear previous settings */ |
| 116 | *ss_algo_channel = 0; |
| 117 | |
| 118 | if (!wlc->pub->up) { |
Greg Kroah-Hartman | 7d4df48 | 2010-10-07 17:04:47 -0700 | [diff] [blame] | 119 | *ss_algo_channel = (u16) -1; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 120 | return; |
| 121 | } |
| 122 | |
| 123 | wlc_phy_txpower_get_current(wlc->band->pi, &power, |
| 124 | CHSPEC_CHANNEL(chanspec)); |
| 125 | |
| 126 | siso_mcs_id = (CHSPEC_IS40(chanspec)) ? |
| 127 | WL_TX_POWER_MCS40_SISO_FIRST : WL_TX_POWER_MCS20_SISO_FIRST; |
| 128 | cdd_mcs_id = (CHSPEC_IS40(chanspec)) ? |
| 129 | WL_TX_POWER_MCS40_CDD_FIRST : WL_TX_POWER_MCS20_CDD_FIRST; |
| 130 | stbc_mcs_id = (CHSPEC_IS40(chanspec)) ? |
| 131 | WL_TX_POWER_MCS40_STBC_FIRST : WL_TX_POWER_MCS20_STBC_FIRST; |
| 132 | |
| 133 | /* criteria to choose stf mode */ |
| 134 | |
| 135 | /* the "+3dbm (12 0.25db units)" is to account for the fact that with CDD, tx occurs |
| 136 | * on both chains |
| 137 | */ |
| 138 | if (power.target[siso_mcs_id] > (power.target[cdd_mcs_id] + 12)) |
| 139 | setbit(ss_algo_channel, PHY_TXC1_MODE_SISO); |
| 140 | else |
| 141 | setbit(ss_algo_channel, PHY_TXC1_MODE_CDD); |
| 142 | |
| 143 | /* STBC is ORed into to algo channel as STBC requires per-packet SCB capability check |
| 144 | * so cannot be default mode of operation. One of SISO, CDD have to be set |
| 145 | */ |
| 146 | if (power.target[siso_mcs_id] <= (power.target[stbc_mcs_id] + 12)) |
| 147 | setbit(ss_algo_channel, PHY_TXC1_MODE_STBC); |
| 148 | } |
| 149 | |
Greg Kroah-Hartman | 562c885 | 2010-10-05 11:04:17 -0700 | [diff] [blame] | 150 | static s8 wlc_stf_stbc_rx_get(wlc_info_t *wlc) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 151 | { |
| 152 | return (wlc->ht_cap.cap & HT_CAP_RX_STBC_MASK) >> HT_CAP_RX_STBC_SHIFT; |
| 153 | } |
| 154 | |
Greg Kroah-Hartman | 3e26416 | 2010-10-08 11:11:13 -0700 | [diff] [blame] | 155 | static bool wlc_stf_stbc_tx_set(wlc_info_t *wlc, s32 int_val) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 156 | { |
| 157 | if ((int_val != AUTO) && (int_val != OFF) && (int_val != ON)) { |
Greg Kroah-Hartman | 0965ae8 | 2010-10-12 12:50:15 -0700 | [diff] [blame] | 158 | return false; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 159 | } |
| 160 | |
| 161 | if ((int_val == ON) && (wlc->stf->txstreams == 1)) |
Greg Kroah-Hartman | 0965ae8 | 2010-10-12 12:50:15 -0700 | [diff] [blame] | 162 | return false; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 163 | |
| 164 | if ((int_val == OFF) || (wlc->stf->txstreams == 1) |
| 165 | || !WLC_STBC_CAP_PHY(wlc)) |
| 166 | wlc->ht_cap.cap &= ~HT_CAP_TX_STBC; |
| 167 | else |
| 168 | wlc->ht_cap.cap |= HT_CAP_TX_STBC; |
| 169 | |
Greg Kroah-Hartman | 562c885 | 2010-10-05 11:04:17 -0700 | [diff] [blame] | 170 | wlc->bandstate[BAND_2G_INDEX]->band_stf_stbc_tx = (s8) int_val; |
| 171 | wlc->bandstate[BAND_5G_INDEX]->band_stf_stbc_tx = (s8) int_val; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 172 | |
Greg Kroah-Hartman | 0f0881b | 2010-10-12 12:15:18 -0700 | [diff] [blame] | 173 | return true; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 174 | } |
| 175 | |
Greg Kroah-Hartman | 3e26416 | 2010-10-08 11:11:13 -0700 | [diff] [blame] | 176 | bool wlc_stf_stbc_rx_set(wlc_info_t *wlc, s32 int_val) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 177 | { |
| 178 | if ((int_val != HT_CAP_RX_STBC_NO) |
| 179 | && (int_val != HT_CAP_RX_STBC_ONE_STREAM)) { |
Greg Kroah-Hartman | 0965ae8 | 2010-10-12 12:50:15 -0700 | [diff] [blame] | 180 | return false; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 181 | } |
| 182 | |
| 183 | if (WLC_STF_SS_STBC_RX(wlc)) { |
| 184 | if ((int_val != HT_CAP_RX_STBC_NO) |
| 185 | && (wlc->stf->rxstreams == 1)) |
Greg Kroah-Hartman | 0965ae8 | 2010-10-12 12:50:15 -0700 | [diff] [blame] | 186 | return false; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 187 | } |
| 188 | |
| 189 | wlc_stf_stbc_rx_ht_update(wlc, int_val); |
Greg Kroah-Hartman | 0f0881b | 2010-10-12 12:15:18 -0700 | [diff] [blame] | 190 | return true; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 191 | } |
| 192 | |
Greg Kroah-Hartman | 41feb5e | 2010-10-05 10:09:00 -0700 | [diff] [blame] | 193 | static int wlc_stf_txcore_set(wlc_info_t *wlc, u8 Nsts, u8 core_mask) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 194 | { |
| 195 | WL_TRACE(("wl%d: %s: Nsts %d core_mask %x\n", |
| 196 | wlc->pub->unit, __func__, Nsts, core_mask)); |
| 197 | |
| 198 | ASSERT((Nsts > 0) && (Nsts <= MAX_STREAMS_SUPPORTED)); |
| 199 | |
| 200 | if (WLC_BITSCNT(core_mask) > wlc->stf->txstreams) { |
| 201 | core_mask = 0; |
| 202 | } |
| 203 | |
| 204 | if ((WLC_BITSCNT(core_mask) == wlc->stf->txstreams) && |
| 205 | ((core_mask & ~wlc->stf->txchain) |
| 206 | || !(core_mask & wlc->stf->txchain))) { |
| 207 | core_mask = wlc->stf->txchain; |
| 208 | } |
| 209 | |
| 210 | ASSERT(!core_mask || Nsts <= WLC_BITSCNT(core_mask)); |
| 211 | |
| 212 | wlc->stf->txcore[Nsts] = core_mask; |
| 213 | /* Nsts = 1..4, txcore index = 1..4 */ |
| 214 | if (Nsts == 1) { |
| 215 | /* Needs to update beacon and ucode generated response |
| 216 | * frames when 1 stream core map changed |
| 217 | */ |
| 218 | wlc->stf->phytxant = core_mask << PHY_TXC_ANT_SHIFT; |
| 219 | wlc_bmac_txant_set(wlc->hw, wlc->stf->phytxant); |
| 220 | if (wlc->clk) { |
| 221 | wlc_suspend_mac_and_wait(wlc); |
| 222 | wlc_beacon_phytxctl_txant_upd(wlc, wlc->bcn_rspec); |
| 223 | wlc_enable_mac(wlc); |
| 224 | } |
| 225 | } |
| 226 | |
| 227 | return BCME_OK; |
| 228 | } |
| 229 | |
Jason Cooper | 7cc4a4c | 2010-09-14 09:45:30 -0400 | [diff] [blame] | 230 | static int wlc_stf_spatial_policy_set(wlc_info_t *wlc, int val) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 231 | { |
| 232 | int i; |
Greg Kroah-Hartman | 41feb5e | 2010-10-05 10:09:00 -0700 | [diff] [blame] | 233 | u8 core_mask = 0; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 234 | |
| 235 | WL_TRACE(("wl%d: %s: val %x\n", wlc->pub->unit, __func__, val)); |
| 236 | |
Greg Kroah-Hartman | 562c885 | 2010-10-05 11:04:17 -0700 | [diff] [blame] | 237 | wlc->stf->spatial_policy = (s8) val; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 238 | for (i = 1; i <= MAX_STREAMS_SUPPORTED; i++) { |
| 239 | core_mask = (val == MAX_SPATIAL_EXPANSION) ? |
| 240 | wlc->stf->txchain : txcore_default[i]; |
Greg Kroah-Hartman | 41feb5e | 2010-10-05 10:09:00 -0700 | [diff] [blame] | 241 | wlc_stf_txcore_set(wlc, (u8) i, core_mask); |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 242 | } |
| 243 | return BCME_OK; |
| 244 | } |
| 245 | |
Greg Kroah-Hartman | 3e26416 | 2010-10-08 11:11:13 -0700 | [diff] [blame] | 246 | int wlc_stf_txchain_set(wlc_info_t *wlc, s32 int_val, bool force) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 247 | { |
Greg Kroah-Hartman | 41feb5e | 2010-10-05 10:09:00 -0700 | [diff] [blame] | 248 | u8 txchain = (u8) int_val; |
| 249 | u8 txstreams; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 250 | uint i; |
| 251 | |
| 252 | if (wlc->stf->txchain == txchain) |
| 253 | return BCME_OK; |
| 254 | |
| 255 | if ((txchain & ~wlc->stf->hw_txchain) |
| 256 | || !(txchain & wlc->stf->hw_txchain)) |
| 257 | return BCME_RANGE; |
| 258 | |
| 259 | /* if nrate override is configured to be non-SISO STF mode, reject reducing txchain to 1 */ |
Greg Kroah-Hartman | 41feb5e | 2010-10-05 10:09:00 -0700 | [diff] [blame] | 260 | txstreams = (u8) WLC_BITSCNT(txchain); |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 261 | if (txstreams > MAX_STREAMS_SUPPORTED) |
| 262 | return BCME_RANGE; |
| 263 | |
| 264 | if (txstreams == 1) { |
| 265 | for (i = 0; i < NBANDS(wlc); i++) |
| 266 | if ((RSPEC_STF(wlc->bandstate[i]->rspec_override) != |
| 267 | PHY_TXC1_MODE_SISO) |
| 268 | || (RSPEC_STF(wlc->bandstate[i]->mrspec_override) != |
| 269 | PHY_TXC1_MODE_SISO)) { |
| 270 | if (!force) |
| 271 | return BCME_ERROR; |
| 272 | |
| 273 | /* over-write the override rspec */ |
| 274 | if (RSPEC_STF(wlc->bandstate[i]->rspec_override) |
| 275 | != PHY_TXC1_MODE_SISO) { |
| 276 | wlc->bandstate[i]->rspec_override = 0; |
| 277 | WL_ERROR(("%s(): temp sense override non-SISO" " rspec_override.\n", __func__)); |
| 278 | } |
| 279 | if (RSPEC_STF |
| 280 | (wlc->bandstate[i]->mrspec_override) != |
| 281 | PHY_TXC1_MODE_SISO) { |
| 282 | wlc->bandstate[i]->mrspec_override = 0; |
| 283 | WL_ERROR(("%s(): temp sense override non-SISO" " mrspec_override.\n", __func__)); |
| 284 | } |
| 285 | } |
| 286 | } |
| 287 | |
| 288 | wlc->stf->txchain = txchain; |
| 289 | wlc->stf->txstreams = txstreams; |
| 290 | wlc_stf_stbc_tx_set(wlc, wlc->band->band_stf_stbc_tx); |
| 291 | wlc_stf_ss_update(wlc, wlc->bandstate[BAND_2G_INDEX]); |
| 292 | wlc_stf_ss_update(wlc, wlc->bandstate[BAND_5G_INDEX]); |
| 293 | wlc->stf->txant = |
| 294 | (wlc->stf->txstreams == 1) ? ANT_TX_FORCE_0 : ANT_TX_DEF; |
| 295 | _wlc_stf_phy_txant_upd(wlc); |
| 296 | |
| 297 | wlc_phy_stf_chain_set(wlc->band->pi, wlc->stf->txchain, |
| 298 | wlc->stf->rxchain); |
| 299 | |
| 300 | for (i = 1; i <= MAX_STREAMS_SUPPORTED; i++) |
Greg Kroah-Hartman | 41feb5e | 2010-10-05 10:09:00 -0700 | [diff] [blame] | 301 | wlc_stf_txcore_set(wlc, (u8) i, txcore_default[i]); |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 302 | |
| 303 | return BCME_OK; |
| 304 | } |
| 305 | |
Greg Kroah-Hartman | 3e26416 | 2010-10-08 11:11:13 -0700 | [diff] [blame] | 306 | int wlc_stf_rxchain_set(wlc_info_t *wlc, s32 int_val) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 307 | { |
Greg Kroah-Hartman | 41feb5e | 2010-10-05 10:09:00 -0700 | [diff] [blame] | 308 | u8 rxchain_cnt; |
| 309 | u8 rxchain = (u8) int_val; |
| 310 | u8 mimops_mode; |
| 311 | u8 old_rxchain, old_rxchain_cnt; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 312 | |
| 313 | if (wlc->stf->rxchain == rxchain) |
| 314 | return BCME_OK; |
| 315 | |
| 316 | if ((rxchain & ~wlc->stf->hw_rxchain) |
| 317 | || !(rxchain & wlc->stf->hw_rxchain)) |
| 318 | return BCME_RANGE; |
| 319 | |
Greg Kroah-Hartman | 41feb5e | 2010-10-05 10:09:00 -0700 | [diff] [blame] | 320 | rxchain_cnt = (u8) WLC_BITSCNT(rxchain); |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 321 | if (WLC_STF_SS_STBC_RX(wlc)) { |
| 322 | if ((rxchain_cnt == 1) |
| 323 | && (wlc_stf_stbc_rx_get(wlc) != HT_CAP_RX_STBC_NO)) |
| 324 | return BCME_RANGE; |
| 325 | } |
| 326 | |
| 327 | if (APSTA_ENAB(wlc->pub) && (wlc->pub->associated)) |
| 328 | return BCME_ASSOCIATED; |
| 329 | |
| 330 | old_rxchain = wlc->stf->rxchain; |
| 331 | old_rxchain_cnt = wlc->stf->rxstreams; |
| 332 | |
| 333 | wlc->stf->rxchain = rxchain; |
| 334 | wlc->stf->rxstreams = rxchain_cnt; |
| 335 | |
| 336 | if (rxchain_cnt != old_rxchain_cnt) { |
| 337 | mimops_mode = |
| 338 | (rxchain_cnt == 1) ? HT_CAP_MIMO_PS_ON : HT_CAP_MIMO_PS_OFF; |
| 339 | wlc->mimops_PM = mimops_mode; |
| 340 | if (AP_ENAB(wlc->pub)) { |
| 341 | wlc_phy_stf_chain_set(wlc->band->pi, wlc->stf->txchain, |
| 342 | wlc->stf->rxchain); |
| 343 | wlc_ht_mimops_cap_update(wlc, mimops_mode); |
| 344 | if (wlc->pub->associated) |
| 345 | wlc_mimops_action_ht_send(wlc, wlc->cfg, |
| 346 | mimops_mode); |
| 347 | return BCME_OK; |
| 348 | } |
| 349 | if (wlc->pub->associated) { |
| 350 | if (mimops_mode == HT_CAP_MIMO_PS_OFF) { |
| 351 | /* if mimops is off, turn on the Rx chain first */ |
| 352 | wlc_phy_stf_chain_set(wlc->band->pi, |
| 353 | wlc->stf->txchain, |
| 354 | wlc->stf->rxchain); |
| 355 | wlc_ht_mimops_cap_update(wlc, mimops_mode); |
| 356 | } |
| 357 | } else { |
| 358 | wlc_phy_stf_chain_set(wlc->band->pi, wlc->stf->txchain, |
| 359 | wlc->stf->rxchain); |
| 360 | wlc_ht_mimops_cap_update(wlc, mimops_mode); |
| 361 | } |
| 362 | } else if (old_rxchain != rxchain) |
| 363 | wlc_phy_stf_chain_set(wlc->band->pi, wlc->stf->txchain, |
| 364 | wlc->stf->rxchain); |
| 365 | |
| 366 | return BCME_OK; |
| 367 | } |
| 368 | |
| 369 | /* update wlc->stf->ss_opmode which represents the operational stf_ss mode we're using */ |
Jason Cooper | 7cc4a4c | 2010-09-14 09:45:30 -0400 | [diff] [blame] | 370 | int wlc_stf_ss_update(wlc_info_t *wlc, wlcband_t *band) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 371 | { |
| 372 | int ret_code = 0; |
Greg Kroah-Hartman | 41feb5e | 2010-10-05 10:09:00 -0700 | [diff] [blame] | 373 | u8 prev_stf_ss; |
| 374 | u8 upd_stf_ss; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 375 | |
| 376 | prev_stf_ss = wlc->stf->ss_opmode; |
| 377 | |
| 378 | /* NOTE: opmode can only be SISO or CDD as STBC is decided on a per-packet basis */ |
| 379 | if (WLC_STBC_CAP_PHY(wlc) && |
| 380 | wlc->stf->ss_algosel_auto |
Greg Kroah-Hartman | 7d4df48 | 2010-10-07 17:04:47 -0700 | [diff] [blame] | 381 | && (wlc->stf->ss_algo_channel != (u16) -1)) { |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 382 | ASSERT(isset(&wlc->stf->ss_algo_channel, PHY_TXC1_MODE_CDD) |
| 383 | || isset(&wlc->stf->ss_algo_channel, |
| 384 | PHY_TXC1_MODE_SISO)); |
| 385 | upd_stf_ss = (wlc->stf->no_cddstbc || (wlc->stf->txstreams == 1) |
| 386 | || isset(&wlc->stf->ss_algo_channel, |
| 387 | PHY_TXC1_MODE_SISO)) ? PHY_TXC1_MODE_SISO |
| 388 | : PHY_TXC1_MODE_CDD; |
| 389 | } else { |
| 390 | if (wlc->band != band) |
| 391 | return ret_code; |
| 392 | upd_stf_ss = (wlc->stf->no_cddstbc |
| 393 | || (wlc->stf->txstreams == |
| 394 | 1)) ? PHY_TXC1_MODE_SISO : band-> |
| 395 | band_stf_ss_mode; |
| 396 | } |
| 397 | if (prev_stf_ss != upd_stf_ss) { |
| 398 | wlc->stf->ss_opmode = upd_stf_ss; |
| 399 | wlc_bmac_band_stf_ss_set(wlc->hw, upd_stf_ss); |
| 400 | } |
| 401 | |
| 402 | return ret_code; |
| 403 | } |
| 404 | |
Greg Kroah-Hartman | 0d2f072 | 2010-10-08 14:28:21 -0700 | [diff] [blame] | 405 | int wlc_stf_attach(wlc_info_t *wlc) |
Jason Cooper | a2627bc | 2010-09-14 09:45:31 -0400 | [diff] [blame] | 406 | { |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 407 | wlc->bandstate[BAND_2G_INDEX]->band_stf_ss_mode = PHY_TXC1_MODE_SISO; |
| 408 | wlc->bandstate[BAND_5G_INDEX]->band_stf_ss_mode = PHY_TXC1_MODE_CDD; |
| 409 | |
| 410 | if (WLCISNPHY(wlc->band) && |
| 411 | (wlc_phy_txpower_hw_ctrl_get(wlc->band->pi) != PHY_TPC_HW_ON)) |
| 412 | wlc->bandstate[BAND_2G_INDEX]->band_stf_ss_mode = |
| 413 | PHY_TXC1_MODE_CDD; |
| 414 | wlc_stf_ss_update(wlc, wlc->bandstate[BAND_2G_INDEX]); |
| 415 | wlc_stf_ss_update(wlc, wlc->bandstate[BAND_5G_INDEX]); |
| 416 | |
| 417 | wlc_stf_stbc_rx_ht_update(wlc, HT_CAP_RX_STBC_NO); |
| 418 | wlc->bandstate[BAND_2G_INDEX]->band_stf_stbc_tx = OFF; |
| 419 | wlc->bandstate[BAND_5G_INDEX]->band_stf_stbc_tx = OFF; |
| 420 | |
| 421 | if (WLC_STBC_CAP_PHY(wlc)) { |
Greg Kroah-Hartman | 0f0881b | 2010-10-12 12:15:18 -0700 | [diff] [blame] | 422 | wlc->stf->ss_algosel_auto = true; |
Greg Kroah-Hartman | 7d4df48 | 2010-10-07 17:04:47 -0700 | [diff] [blame] | 423 | wlc->stf->ss_algo_channel = (u16) -1; /* Init the default value */ |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 424 | } |
| 425 | return 0; |
| 426 | } |
| 427 | |
Greg Kroah-Hartman | 0d2f072 | 2010-10-08 14:28:21 -0700 | [diff] [blame] | 428 | void wlc_stf_detach(wlc_info_t *wlc) |
Jason Cooper | a2627bc | 2010-09-14 09:45:31 -0400 | [diff] [blame] | 429 | { |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 430 | } |
| 431 | |
Greg Kroah-Hartman | 562c885 | 2010-10-05 11:04:17 -0700 | [diff] [blame] | 432 | int wlc_stf_ant_txant_validate(wlc_info_t *wlc, s8 val) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 433 | { |
| 434 | int bcmerror = BCME_OK; |
| 435 | |
| 436 | /* when there is only 1 tx_streams, don't allow to change the txant */ |
| 437 | if (WLCISNPHY(wlc->band) && (wlc->stf->txstreams == 1)) |
| 438 | return ((val == wlc->stf->txant) ? bcmerror : BCME_RANGE); |
| 439 | |
| 440 | switch (val) { |
| 441 | case -1: |
| 442 | val = ANT_TX_DEF; |
| 443 | break; |
| 444 | case 0: |
| 445 | val = ANT_TX_FORCE_0; |
| 446 | break; |
| 447 | case 1: |
| 448 | val = ANT_TX_FORCE_1; |
| 449 | break; |
| 450 | case 3: |
| 451 | val = ANT_TX_LAST_RX; |
| 452 | break; |
| 453 | default: |
| 454 | bcmerror = BCME_RANGE; |
| 455 | break; |
| 456 | } |
| 457 | |
| 458 | if (bcmerror == BCME_OK) |
Greg Kroah-Hartman | 562c885 | 2010-10-05 11:04:17 -0700 | [diff] [blame] | 459 | wlc->stf->txant = (s8) val; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 460 | |
| 461 | return bcmerror; |
| 462 | |
| 463 | } |
| 464 | |
| 465 | /* |
| 466 | * Centralized txant update function. call it whenever wlc->stf->txant and/or wlc->stf->txchain |
| 467 | * change |
| 468 | * |
| 469 | * Antennas are controlled by ucode indirectly, which drives PHY or GPIO to |
| 470 | * achieve various tx/rx antenna selection schemes |
| 471 | * |
| 472 | * legacy phy, bit 6 and bit 7 means antenna 0 and 1 respectively, bit6+bit7 means auto(last rx) |
| 473 | * for NREV<3, bit 6 and bit 7 means antenna 0 and 1 respectively, bit6+bit7 means last rx and |
| 474 | * do tx-antenna selection for SISO transmissions |
| 475 | * for NREV=3, bit 6 and bit _8_ means antenna 0 and 1 respectively, bit6+bit7 means last rx and |
| 476 | * do tx-antenna selection for SISO transmissions |
| 477 | * for NREV>=7, bit 6 and bit 7 mean antenna 0 and 1 respectively, nit6+bit7 means both cores active |
| 478 | */ |
Jason Cooper | 7cc4a4c | 2010-09-14 09:45:30 -0400 | [diff] [blame] | 479 | static void _wlc_stf_phy_txant_upd(wlc_info_t *wlc) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 480 | { |
Greg Kroah-Hartman | 562c885 | 2010-10-05 11:04:17 -0700 | [diff] [blame] | 481 | s8 txant; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 482 | |
Greg Kroah-Hartman | 562c885 | 2010-10-05 11:04:17 -0700 | [diff] [blame] | 483 | txant = (s8) wlc->stf->txant; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 484 | ASSERT(txant == ANT_TX_FORCE_0 || txant == ANT_TX_FORCE_1 |
| 485 | || txant == ANT_TX_LAST_RX); |
| 486 | |
| 487 | if (WLC_PHY_11N_CAP(wlc->band)) { |
| 488 | if (txant == ANT_TX_FORCE_0) { |
| 489 | wlc->stf->phytxant = PHY_TXC_ANT_0; |
| 490 | } else if (txant == ANT_TX_FORCE_1) { |
| 491 | wlc->stf->phytxant = PHY_TXC_ANT_1; |
| 492 | |
| 493 | if (WLCISNPHY(wlc->band) && |
| 494 | NREV_GE(wlc->band->phyrev, 3) |
| 495 | && NREV_LT(wlc->band->phyrev, 7)) { |
| 496 | wlc->stf->phytxant = PHY_TXC_ANT_2; |
| 497 | } |
| 498 | } else { |
| 499 | if (WLCISLCNPHY(wlc->band) || WLCISSSLPNPHY(wlc->band)) |
| 500 | wlc->stf->phytxant = PHY_TXC_LCNPHY_ANT_LAST; |
| 501 | else { |
| 502 | /* keep this assert to catch out of sync wlc->stf->txcore */ |
| 503 | ASSERT(wlc->stf->txchain > 0); |
| 504 | wlc->stf->phytxant = |
| 505 | wlc->stf->txchain << PHY_TXC_ANT_SHIFT; |
| 506 | } |
| 507 | } |
| 508 | } else { |
| 509 | if (txant == ANT_TX_FORCE_0) |
| 510 | wlc->stf->phytxant = PHY_TXC_OLD_ANT_0; |
| 511 | else if (txant == ANT_TX_FORCE_1) |
| 512 | wlc->stf->phytxant = PHY_TXC_OLD_ANT_1; |
| 513 | else |
| 514 | wlc->stf->phytxant = PHY_TXC_OLD_ANT_LAST; |
| 515 | } |
| 516 | |
| 517 | wlc_bmac_txant_set(wlc->hw, wlc->stf->phytxant); |
| 518 | } |
| 519 | |
Jason Cooper | 7cc4a4c | 2010-09-14 09:45:30 -0400 | [diff] [blame] | 520 | void wlc_stf_phy_txant_upd(wlc_info_t *wlc) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 521 | { |
| 522 | _wlc_stf_phy_txant_upd(wlc); |
| 523 | } |
| 524 | |
Greg Kroah-Hartman | 0d2f072 | 2010-10-08 14:28:21 -0700 | [diff] [blame] | 525 | void wlc_stf_phy_chain_calc(wlc_info_t *wlc) |
Jason Cooper | a2627bc | 2010-09-14 09:45:31 -0400 | [diff] [blame] | 526 | { |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 527 | /* get available rx/tx chains */ |
Greg Kroah-Hartman | 41feb5e | 2010-10-05 10:09:00 -0700 | [diff] [blame] | 528 | wlc->stf->hw_txchain = (u8) getintvar(wlc->pub->vars, "txchain"); |
| 529 | wlc->stf->hw_rxchain = (u8) getintvar(wlc->pub->vars, "rxchain"); |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 530 | |
| 531 | /* these parameter are intended to be used for all PHY types */ |
| 532 | if (wlc->stf->hw_txchain == 0 || wlc->stf->hw_txchain == 0xf) { |
| 533 | if (WLCISNPHY(wlc->band)) { |
| 534 | wlc->stf->hw_txchain = TXCHAIN_DEF_NPHY; |
| 535 | } else { |
| 536 | wlc->stf->hw_txchain = TXCHAIN_DEF; |
| 537 | } |
| 538 | } |
| 539 | |
| 540 | wlc->stf->txchain = wlc->stf->hw_txchain; |
Greg Kroah-Hartman | 41feb5e | 2010-10-05 10:09:00 -0700 | [diff] [blame] | 541 | wlc->stf->txstreams = (u8) WLC_BITSCNT(wlc->stf->hw_txchain); |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 542 | |
| 543 | if (wlc->stf->hw_rxchain == 0 || wlc->stf->hw_rxchain == 0xf) { |
| 544 | if (WLCISNPHY(wlc->band)) { |
| 545 | wlc->stf->hw_rxchain = RXCHAIN_DEF_NPHY; |
| 546 | } else { |
| 547 | wlc->stf->hw_rxchain = RXCHAIN_DEF; |
| 548 | } |
| 549 | } |
| 550 | |
| 551 | wlc->stf->rxchain = wlc->stf->hw_rxchain; |
Greg Kroah-Hartman | 41feb5e | 2010-10-05 10:09:00 -0700 | [diff] [blame] | 552 | wlc->stf->rxstreams = (u8) WLC_BITSCNT(wlc->stf->hw_rxchain); |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 553 | |
| 554 | /* initialize the txcore table */ |
| 555 | bcopy(txcore_default, wlc->stf->txcore, sizeof(wlc->stf->txcore)); |
| 556 | |
| 557 | /* default spatial_policy */ |
| 558 | wlc->stf->spatial_policy = MIN_SPATIAL_EXPANSION; |
| 559 | wlc_stf_spatial_policy_set(wlc, MIN_SPATIAL_EXPANSION); |
| 560 | } |
| 561 | |
Greg Kroah-Hartman | 7d4df48 | 2010-10-07 17:04:47 -0700 | [diff] [blame] | 562 | static u16 _wlc_stf_phytxchain_sel(wlc_info_t *wlc, ratespec_t rspec) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 563 | { |
Greg Kroah-Hartman | 7d4df48 | 2010-10-07 17:04:47 -0700 | [diff] [blame] | 564 | u16 phytxant = wlc->stf->phytxant; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 565 | |
| 566 | if (RSPEC_STF(rspec) != PHY_TXC1_MODE_SISO) { |
| 567 | ASSERT(wlc->stf->txstreams > 1); |
| 568 | phytxant = wlc->stf->txchain << PHY_TXC_ANT_SHIFT; |
| 569 | } else if (wlc->stf->txant == ANT_TX_DEF) |
| 570 | phytxant = wlc->stf->txchain << PHY_TXC_ANT_SHIFT; |
| 571 | phytxant &= PHY_TXC_ANT_MASK; |
| 572 | return phytxant; |
| 573 | } |
| 574 | |
Greg Kroah-Hartman | 7d4df48 | 2010-10-07 17:04:47 -0700 | [diff] [blame] | 575 | u16 wlc_stf_phytxchain_sel(wlc_info_t *wlc, ratespec_t rspec) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 576 | { |
| 577 | return _wlc_stf_phytxchain_sel(wlc, rspec); |
| 578 | } |
| 579 | |
Greg Kroah-Hartman | 7d4df48 | 2010-10-07 17:04:47 -0700 | [diff] [blame] | 580 | u16 wlc_stf_d11hdrs_phyctl_txant(wlc_info_t *wlc, ratespec_t rspec) |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 581 | { |
Greg Kroah-Hartman | 7d4df48 | 2010-10-07 17:04:47 -0700 | [diff] [blame] | 582 | u16 phytxant = wlc->stf->phytxant; |
| 583 | u16 mask = PHY_TXC_ANT_MASK; |
Henry Ptasinski | a9533e7 | 2010-09-08 21:04:42 -0700 | [diff] [blame] | 584 | |
| 585 | /* for non-siso rates or default setting, use the available chains */ |
| 586 | if (WLCISNPHY(wlc->band)) { |
| 587 | ASSERT(wlc->stf->txchain != 0); |
| 588 | phytxant = _wlc_stf_phytxchain_sel(wlc, rspec); |
| 589 | mask = PHY_TXC_HTANT_MASK; |
| 590 | } |
| 591 | phytxant |= phytxant & mask; |
| 592 | return phytxant; |
| 593 | } |