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>
40 #include "phy/wlc_phy_hal.h"
42 #include "wlc_channel.h"
43 #include "wlc_bsscfg.h"
44 #include "wlc_mac80211.h"
45 #include "wl_export.h"
46 #include "wlc_phy_shim.h"
47 #include "wlc_antsel.h"
50 #define WLC_ANTSEL_11N_0(ant) ((((ant) & ANT_SELCFG_MASK) >> 4) & 0xf)
51 #define WLC_ANTSEL_11N_1(ant) (((ant) & ANT_SELCFG_MASK) & 0xf)
52 #define WLC_ANTIDX_11N(ant) (((WLC_ANTSEL_11N_0(ant)) << 2) + (WLC_ANTSEL_11N_1(ant)))
53 #define WLC_ANT_ISAUTO_11N(ant) (((ant) & ANT_SELCFG_AUTO) == ANT_SELCFG_AUTO)
54 #define WLC_ANTSEL_11N(ant) ((ant) & ANT_SELCFG_MASK)
57 /* defines for no boardlevel antenna diversity */
58 #define ANT_SELCFG_DEF_2x2 0x01 /* default antenna configuration */
60 /* 2x3 antdiv defines and tables for GPIO communication */
61 #define ANT_SELCFG_NUM_2x3 3
62 #define ANT_SELCFG_DEF_2x3 0x01 /* default antenna configuration */
64 /* 2x4 antdiv rev4 defines and tables for GPIO communication */
65 #define ANT_SELCFG_NUM_2x4 4
66 #define ANT_SELCFG_DEF_2x4 0x02 /* default antenna configuration */
68 /* static functions */
69 static int wlc_antsel_cfgupd(struct antsel_info *asi, wlc_antselcfg_t *antsel);
70 static u8 wlc_antsel_id2antcfg(struct antsel_info *asi, u8 id);
71 static u16 wlc_antsel_antcfg2antsel(struct antsel_info *asi, u8 ant_cfg);
72 static void wlc_antsel_init_cfg(struct antsel_info *asi,
73 wlc_antselcfg_t *antsel,
76 const u16 mimo_2x4_div_antselpat_tbl[] = {
77 0, 0, 0x9, 0xa, /* ant0: 0 ant1: 2,3 */
78 0, 0, 0x5, 0x6, /* ant0: 1 ant1: 2,3 */
79 0, 0, 0, 0, /* n.a. */
83 const u8 mimo_2x4_div_antselid_tbl[16] = {
84 0, 0, 0, 0, 0, 2, 3, 0,
85 0, 0, 1, 0, 0, 0, 0, 0 /* pat to antselid */
88 const u16 mimo_2x3_div_antselpat_tbl[] = {
89 16, 0, 1, 16, /* ant0: 0 ant1: 1,2 */
90 16, 16, 16, 16, /* n.a. */
91 16, 2, 16, 16, /* ant0: 2 ant1: 1 */
92 16, 16, 16, 16 /* n.a. */
95 const u8 mimo_2x3_div_antselid_tbl[16] = {
96 0, 1, 2, 0, 0, 0, 0, 0,
97 0, 0, 0, 0, 0, 0, 0, 0 /* pat to antselid */
100 struct antsel_info *wlc_antsel_attach(struct wlc_info *wlc,
101 struct osl_info *osh,
103 struct wlc_hw_info *wlc_hw) {
104 struct antsel_info *asi;
106 asi = kzalloc(sizeof(struct antsel_info), GFP_ATOMIC);
108 WL_ERROR("wl%d: wlc_antsel_attach: out of mem\n", pub->unit);
114 asi->antsel_type = ANTSEL_NA;
115 asi->antsel_avail = false;
116 asi->antsel_antswitch = (u8) getintvar(asi->pub->vars, "antswitch");
118 if ((asi->pub->sromrev >= 4) && (asi->antsel_antswitch != 0)) {
119 switch (asi->antsel_antswitch) {
120 case ANTSWITCH_TYPE_1:
121 case ANTSWITCH_TYPE_2:
122 case ANTSWITCH_TYPE_3:
123 /* 4321/2 board with 2x3 switch logic */
124 asi->antsel_type = ANTSEL_2x3;
125 /* Antenna selection availability */
126 if (((u16) getintvar(asi->pub->vars, "aa2g") == 7) ||
127 ((u16) getintvar(asi->pub->vars, "aa5g") == 7)) {
128 asi->antsel_avail = true;
130 if (((u16) getintvar(asi->pub->vars, "aa2g") ==
132 || ((u16) getintvar(asi->pub->vars, "aa5g")
134 asi->antsel_avail = false;
136 asi->antsel_avail = false;
137 WL_ERROR("wlc_antsel_attach: 2o3 board cfg invalid\n");
144 } else if ((asi->pub->sromrev == 4) &&
145 ((u16) getintvar(asi->pub->vars, "aa2g") == 7) &&
146 ((u16) getintvar(asi->pub->vars, "aa5g") == 0)) {
147 /* hack to match old 4321CB2 cards with 2of3 antenna switch */
148 asi->antsel_type = ANTSEL_2x3;
149 asi->antsel_avail = true;
150 } else if (asi->pub->boardflags2 & BFL2_2X4_DIV) {
151 asi->antsel_type = ANTSEL_2x4;
152 asi->antsel_avail = true;
155 /* Set the antenna selection type for the low driver */
156 wlc_bmac_antsel_type_set(wlc_hw, asi->antsel_type);
158 /* Init (auto/manual) antenna selection */
159 wlc_antsel_init_cfg(asi, &asi->antcfg_11n, true);
160 wlc_antsel_init_cfg(asi, &asi->antcfg_cur, true);
165 void wlc_antsel_detach(struct antsel_info *asi)
173 void wlc_antsel_init(struct antsel_info *asi)
175 if ((asi->antsel_type == ANTSEL_2x3) ||
176 (asi->antsel_type == ANTSEL_2x4))
177 wlc_antsel_cfgupd(asi, &asi->antcfg_11n);
180 /* boardlevel antenna selection: init antenna selection structure */
182 wlc_antsel_init_cfg(struct antsel_info *asi, wlc_antselcfg_t *antsel,
185 if (asi->antsel_type == ANTSEL_2x3) {
186 u8 antcfg_def = ANT_SELCFG_DEF_2x3 |
187 ((asi->antsel_avail && auto_sel) ? ANT_SELCFG_AUTO : 0);
188 antsel->ant_config[ANT_SELCFG_TX_DEF] = antcfg_def;
189 antsel->ant_config[ANT_SELCFG_TX_UNICAST] = antcfg_def;
190 antsel->ant_config[ANT_SELCFG_RX_DEF] = antcfg_def;
191 antsel->ant_config[ANT_SELCFG_RX_UNICAST] = antcfg_def;
192 antsel->num_antcfg = ANT_SELCFG_NUM_2x3;
194 } else if (asi->antsel_type == ANTSEL_2x4) {
196 antsel->ant_config[ANT_SELCFG_TX_DEF] = ANT_SELCFG_DEF_2x4;
197 antsel->ant_config[ANT_SELCFG_TX_UNICAST] = ANT_SELCFG_DEF_2x4;
198 antsel->ant_config[ANT_SELCFG_RX_DEF] = ANT_SELCFG_DEF_2x4;
199 antsel->ant_config[ANT_SELCFG_RX_UNICAST] = ANT_SELCFG_DEF_2x4;
200 antsel->num_antcfg = ANT_SELCFG_NUM_2x4;
202 } else { /* no antenna selection available */
204 antsel->ant_config[ANT_SELCFG_TX_DEF] = ANT_SELCFG_DEF_2x2;
205 antsel->ant_config[ANT_SELCFG_TX_UNICAST] = ANT_SELCFG_DEF_2x2;
206 antsel->ant_config[ANT_SELCFG_RX_DEF] = ANT_SELCFG_DEF_2x2;
207 antsel->ant_config[ANT_SELCFG_RX_UNICAST] = ANT_SELCFG_DEF_2x2;
208 antsel->num_antcfg = 0;
213 wlc_antsel_antcfg_get(struct antsel_info *asi, bool usedef, bool sel,
214 u8 antselid, u8 fbantselid, u8 *antcfg,
219 /* if use default, assign it and return */
221 *antcfg = asi->antcfg_11n.ant_config[ANT_SELCFG_TX_DEF];
227 *antcfg = asi->antcfg_11n.ant_config[ANT_SELCFG_TX_UNICAST];
231 ant = asi->antcfg_11n.ant_config[ANT_SELCFG_TX_UNICAST];
232 if ((ant & ANT_SELCFG_AUTO) == ANT_SELCFG_AUTO) {
233 *antcfg = wlc_antsel_id2antcfg(asi, antselid);
234 *fbantcfg = wlc_antsel_id2antcfg(asi, fbantselid);
237 asi->antcfg_11n.ant_config[ANT_SELCFG_TX_UNICAST];
244 /* boardlevel antenna selection: convert mimo_antsel (ucode interface) to id */
245 u8 wlc_antsel_antsel2id(struct antsel_info *asi, u16 antsel)
249 if (asi->antsel_type == ANTSEL_2x4) {
250 /* 2x4 antenna diversity board, 4 cfgs: 0-2 0-3 1-2 1-3 */
251 antselid = mimo_2x4_div_antselid_tbl[(antsel & 0xf)];
254 } else if (asi->antsel_type == ANTSEL_2x3) {
255 /* 2x3 antenna selection, 3 cfgs: 0-1 0-2 2-1 */
256 antselid = mimo_2x3_div_antselid_tbl[(antsel & 0xf)];
263 /* boardlevel antenna selection: convert id to ant_cfg */
264 static u8 wlc_antsel_id2antcfg(struct antsel_info *asi, u8 id)
266 u8 antcfg = ANT_SELCFG_DEF_2x2;
268 if (asi->antsel_type == ANTSEL_2x4) {
269 /* 2x4 antenna diversity board, 4 cfgs: 0-2 0-3 1-2 1-3 */
270 antcfg = (((id & 0x2) << 3) | ((id & 0x1) + 2));
273 } else if (asi->antsel_type == ANTSEL_2x3) {
274 /* 2x3 antenna selection, 3 cfgs: 0-1 0-2 2-1 */
275 antcfg = (((id & 0x02) << 4) | ((id & 0x1) + 1));
282 /* boardlevel antenna selection: convert ant_cfg to mimo_antsel (ucode interface) */
283 static u16 wlc_antsel_antcfg2antsel(struct antsel_info *asi, u8 ant_cfg)
285 u8 idx = WLC_ANTIDX_11N(WLC_ANTSEL_11N(ant_cfg));
288 if (asi->antsel_type == ANTSEL_2x4) {
289 /* 2x4 antenna diversity board, 4 cfgs: 0-2 0-3 1-2 1-3 */
290 mimo_antsel = (mimo_2x4_div_antselpat_tbl[idx] & 0xf);
293 } else if (asi->antsel_type == ANTSEL_2x3) {
294 /* 2x3 antenna selection, 3 cfgs: 0-1 0-2 2-1 */
295 mimo_antsel = (mimo_2x3_div_antselpat_tbl[idx] & 0xf);
302 /* boardlevel antenna selection: ucode interface control */
303 static int wlc_antsel_cfgupd(struct antsel_info *asi, wlc_antselcfg_t *antsel)
305 struct wlc_info *wlc = asi->wlc;
309 ASSERT(asi->antsel_type != ANTSEL_NA);
311 /* 1) Update TX antconfig for all frames that are not unicast data
314 ant_cfg = antsel->ant_config[ANT_SELCFG_TX_DEF];
315 mimo_antsel = wlc_antsel_antcfg2antsel(asi, ant_cfg);
316 wlc_write_shm(wlc, M_MIMO_ANTSEL_TXDFLT, mimo_antsel);
317 /* Update driver stats for currently selected default tx/rx antenna config */
318 asi->antcfg_cur.ant_config[ANT_SELCFG_TX_DEF] = ant_cfg;
320 /* 2) Update RX antconfig for all frames that are not unicast data
323 ant_cfg = antsel->ant_config[ANT_SELCFG_RX_DEF];
324 mimo_antsel = wlc_antsel_antcfg2antsel(asi, ant_cfg);
325 wlc_write_shm(wlc, M_MIMO_ANTSEL_RXDFLT, mimo_antsel);
326 /* Update driver stats for currently selected default tx/rx antenna config */
327 asi->antcfg_cur.ant_config[ANT_SELCFG_RX_DEF] = ant_cfg;
332 #endif /* WLANTSEL */