2 * Copyright (c) 2010 Broadcom Corporation
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.
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.
21 #include <linux/kernel.h>
22 #include <linux/module.h>
23 #include <linux/pci.h>
39 #include "phy/wlc_phy_hal.h"
41 #include "wlc_channel.h"
42 #include "wlc_bsscfg.h"
43 #include "wlc_mac80211.h"
44 #include "wl_export.h"
45 #include "wlc_phy_shim.h"
46 #include "wlc_antsel.h"
49 #define WLC_ANTSEL_11N_0(ant) ((((ant) & ANT_SELCFG_MASK) >> 4) & 0xf)
50 #define WLC_ANTSEL_11N_1(ant) (((ant) & ANT_SELCFG_MASK) & 0xf)
51 #define WLC_ANTIDX_11N(ant) (((WLC_ANTSEL_11N_0(ant)) << 2) + (WLC_ANTSEL_11N_1(ant)))
52 #define WLC_ANT_ISAUTO_11N(ant) (((ant) & ANT_SELCFG_AUTO) == ANT_SELCFG_AUTO)
53 #define WLC_ANTSEL_11N(ant) ((ant) & ANT_SELCFG_MASK)
56 /* defines for no boardlevel antenna diversity */
57 #define ANT_SELCFG_DEF_2x2 0x01 /* default antenna configuration */
59 /* 2x3 antdiv defines and tables for GPIO communication */
60 #define ANT_SELCFG_NUM_2x3 3
61 #define ANT_SELCFG_DEF_2x3 0x01 /* default antenna configuration */
63 /* 2x4 antdiv rev4 defines and tables for GPIO communication */
64 #define ANT_SELCFG_NUM_2x4 4
65 #define ANT_SELCFG_DEF_2x4 0x02 /* default antenna configuration */
67 /* static functions */
68 static int wlc_antsel_cfgupd(struct antsel_info *asi, wlc_antselcfg_t *antsel);
69 static u8 wlc_antsel_id2antcfg(struct antsel_info *asi, u8 id);
70 static u16 wlc_antsel_antcfg2antsel(struct antsel_info *asi, u8 ant_cfg);
71 static void wlc_antsel_init_cfg(struct antsel_info *asi,
72 wlc_antselcfg_t *antsel,
75 const u16 mimo_2x4_div_antselpat_tbl[] = {
76 0, 0, 0x9, 0xa, /* ant0: 0 ant1: 2,3 */
77 0, 0, 0x5, 0x6, /* ant0: 1 ant1: 2,3 */
78 0, 0, 0, 0, /* n.a. */
82 const u8 mimo_2x4_div_antselid_tbl[16] = {
83 0, 0, 0, 0, 0, 2, 3, 0,
84 0, 0, 1, 0, 0, 0, 0, 0 /* pat to antselid */
87 const u16 mimo_2x3_div_antselpat_tbl[] = {
88 16, 0, 1, 16, /* ant0: 0 ant1: 1,2 */
89 16, 16, 16, 16, /* n.a. */
90 16, 2, 16, 16, /* ant0: 2 ant1: 1 */
91 16, 16, 16, 16 /* n.a. */
94 const u8 mimo_2x3_div_antselid_tbl[16] = {
95 0, 1, 2, 0, 0, 0, 0, 0,
96 0, 0, 0, 0, 0, 0, 0, 0 /* pat to antselid */
99 struct antsel_info *wlc_antsel_attach(struct wlc_info *wlc,
100 struct osl_info *osh,
102 struct wlc_hw_info *wlc_hw) {
103 struct antsel_info *asi;
105 asi = kzalloc(sizeof(struct antsel_info), GFP_ATOMIC);
107 WL_ERROR("wl%d: wlc_antsel_attach: out of mem\n", pub->unit);
113 asi->antsel_type = ANTSEL_NA;
114 asi->antsel_avail = false;
115 asi->antsel_antswitch = (u8) getintvar(asi->pub->vars, "antswitch");
117 if ((asi->pub->sromrev >= 4) && (asi->antsel_antswitch != 0)) {
118 switch (asi->antsel_antswitch) {
119 case ANTSWITCH_TYPE_1:
120 case ANTSWITCH_TYPE_2:
121 case ANTSWITCH_TYPE_3:
122 /* 4321/2 board with 2x3 switch logic */
123 asi->antsel_type = ANTSEL_2x3;
124 /* Antenna selection availability */
125 if (((u16) getintvar(asi->pub->vars, "aa2g") == 7) ||
126 ((u16) getintvar(asi->pub->vars, "aa5g") == 7)) {
127 asi->antsel_avail = true;
129 if (((u16) getintvar(asi->pub->vars, "aa2g") ==
131 || ((u16) getintvar(asi->pub->vars, "aa5g")
133 asi->antsel_avail = false;
135 asi->antsel_avail = false;
136 WL_ERROR("wlc_antsel_attach: 2o3 board cfg invalid\n");
143 } else if ((asi->pub->sromrev == 4) &&
144 ((u16) getintvar(asi->pub->vars, "aa2g") == 7) &&
145 ((u16) getintvar(asi->pub->vars, "aa5g") == 0)) {
146 /* hack to match old 4321CB2 cards with 2of3 antenna switch */
147 asi->antsel_type = ANTSEL_2x3;
148 asi->antsel_avail = true;
149 } else if (asi->pub->boardflags2 & BFL2_2X4_DIV) {
150 asi->antsel_type = ANTSEL_2x4;
151 asi->antsel_avail = true;
154 /* Set the antenna selection type for the low driver */
155 wlc_bmac_antsel_type_set(wlc_hw, asi->antsel_type);
157 /* Init (auto/manual) antenna selection */
158 wlc_antsel_init_cfg(asi, &asi->antcfg_11n, true);
159 wlc_antsel_init_cfg(asi, &asi->antcfg_cur, true);
164 void wlc_antsel_detach(struct antsel_info *asi)
172 void wlc_antsel_init(struct antsel_info *asi)
174 if ((asi->antsel_type == ANTSEL_2x3) ||
175 (asi->antsel_type == ANTSEL_2x4))
176 wlc_antsel_cfgupd(asi, &asi->antcfg_11n);
179 /* boardlevel antenna selection: init antenna selection structure */
181 wlc_antsel_init_cfg(struct antsel_info *asi, wlc_antselcfg_t *antsel,
184 if (asi->antsel_type == ANTSEL_2x3) {
185 u8 antcfg_def = ANT_SELCFG_DEF_2x3 |
186 ((asi->antsel_avail && auto_sel) ? ANT_SELCFG_AUTO : 0);
187 antsel->ant_config[ANT_SELCFG_TX_DEF] = antcfg_def;
188 antsel->ant_config[ANT_SELCFG_TX_UNICAST] = antcfg_def;
189 antsel->ant_config[ANT_SELCFG_RX_DEF] = antcfg_def;
190 antsel->ant_config[ANT_SELCFG_RX_UNICAST] = antcfg_def;
191 antsel->num_antcfg = ANT_SELCFG_NUM_2x3;
193 } else if (asi->antsel_type == ANTSEL_2x4) {
195 antsel->ant_config[ANT_SELCFG_TX_DEF] = ANT_SELCFG_DEF_2x4;
196 antsel->ant_config[ANT_SELCFG_TX_UNICAST] = ANT_SELCFG_DEF_2x4;
197 antsel->ant_config[ANT_SELCFG_RX_DEF] = ANT_SELCFG_DEF_2x4;
198 antsel->ant_config[ANT_SELCFG_RX_UNICAST] = ANT_SELCFG_DEF_2x4;
199 antsel->num_antcfg = ANT_SELCFG_NUM_2x4;
201 } else { /* no antenna selection available */
203 antsel->ant_config[ANT_SELCFG_TX_DEF] = ANT_SELCFG_DEF_2x2;
204 antsel->ant_config[ANT_SELCFG_TX_UNICAST] = ANT_SELCFG_DEF_2x2;
205 antsel->ant_config[ANT_SELCFG_RX_DEF] = ANT_SELCFG_DEF_2x2;
206 antsel->ant_config[ANT_SELCFG_RX_UNICAST] = ANT_SELCFG_DEF_2x2;
207 antsel->num_antcfg = 0;
212 wlc_antsel_antcfg_get(struct antsel_info *asi, bool usedef, bool sel,
213 u8 antselid, u8 fbantselid, u8 *antcfg,
218 /* if use default, assign it and return */
220 *antcfg = asi->antcfg_11n.ant_config[ANT_SELCFG_TX_DEF];
226 *antcfg = asi->antcfg_11n.ant_config[ANT_SELCFG_TX_UNICAST];
230 ant = asi->antcfg_11n.ant_config[ANT_SELCFG_TX_UNICAST];
231 if ((ant & ANT_SELCFG_AUTO) == ANT_SELCFG_AUTO) {
232 *antcfg = wlc_antsel_id2antcfg(asi, antselid);
233 *fbantcfg = wlc_antsel_id2antcfg(asi, fbantselid);
236 asi->antcfg_11n.ant_config[ANT_SELCFG_TX_UNICAST];
243 /* boardlevel antenna selection: convert mimo_antsel (ucode interface) to id */
244 u8 wlc_antsel_antsel2id(struct antsel_info *asi, u16 antsel)
248 if (asi->antsel_type == ANTSEL_2x4) {
249 /* 2x4 antenna diversity board, 4 cfgs: 0-2 0-3 1-2 1-3 */
250 antselid = mimo_2x4_div_antselid_tbl[(antsel & 0xf)];
253 } else if (asi->antsel_type == ANTSEL_2x3) {
254 /* 2x3 antenna selection, 3 cfgs: 0-1 0-2 2-1 */
255 antselid = mimo_2x3_div_antselid_tbl[(antsel & 0xf)];
262 /* boardlevel antenna selection: convert id to ant_cfg */
263 static u8 wlc_antsel_id2antcfg(struct antsel_info *asi, u8 id)
265 u8 antcfg = ANT_SELCFG_DEF_2x2;
267 if (asi->antsel_type == ANTSEL_2x4) {
268 /* 2x4 antenna diversity board, 4 cfgs: 0-2 0-3 1-2 1-3 */
269 antcfg = (((id & 0x2) << 3) | ((id & 0x1) + 2));
272 } else if (asi->antsel_type == ANTSEL_2x3) {
273 /* 2x3 antenna selection, 3 cfgs: 0-1 0-2 2-1 */
274 antcfg = (((id & 0x02) << 4) | ((id & 0x1) + 1));
281 /* boardlevel antenna selection: convert ant_cfg to mimo_antsel (ucode interface) */
282 static u16 wlc_antsel_antcfg2antsel(struct antsel_info *asi, u8 ant_cfg)
284 u8 idx = WLC_ANTIDX_11N(WLC_ANTSEL_11N(ant_cfg));
287 if (asi->antsel_type == ANTSEL_2x4) {
288 /* 2x4 antenna diversity board, 4 cfgs: 0-2 0-3 1-2 1-3 */
289 mimo_antsel = (mimo_2x4_div_antselpat_tbl[idx] & 0xf);
292 } else if (asi->antsel_type == ANTSEL_2x3) {
293 /* 2x3 antenna selection, 3 cfgs: 0-1 0-2 2-1 */
294 mimo_antsel = (mimo_2x3_div_antselpat_tbl[idx] & 0xf);
301 /* boardlevel antenna selection: ucode interface control */
302 static int wlc_antsel_cfgupd(struct antsel_info *asi, wlc_antselcfg_t *antsel)
304 struct wlc_info *wlc = asi->wlc;
308 ASSERT(asi->antsel_type != ANTSEL_NA);
310 /* 1) Update TX antconfig for all frames that are not unicast data
313 ant_cfg = antsel->ant_config[ANT_SELCFG_TX_DEF];
314 mimo_antsel = wlc_antsel_antcfg2antsel(asi, ant_cfg);
315 wlc_write_shm(wlc, M_MIMO_ANTSEL_TXDFLT, mimo_antsel);
316 /* Update driver stats for currently selected default tx/rx antenna config */
317 asi->antcfg_cur.ant_config[ANT_SELCFG_TX_DEF] = ant_cfg;
319 /* 2) Update RX antconfig for all frames that are not unicast data
322 ant_cfg = antsel->ant_config[ANT_SELCFG_RX_DEF];
323 mimo_antsel = wlc_antsel_antcfg2antsel(asi, ant_cfg);
324 wlc_write_shm(wlc, M_MIMO_ANTSEL_RXDFLT, mimo_antsel);
325 /* Update driver stats for currently selected default tx/rx antenna config */
326 asi->antcfg_cur.ant_config[ANT_SELCFG_RX_DEF] = ant_cfg;
331 #endif /* WLANTSEL */