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>
38 #include <wlc_event.h>
39 #include <wlc_mac80211.h>
41 #include <wlc_phy_hal.h>
42 #include <wl_export.h>
43 #include <wlc_antsel.h>
44 #include <wlc_phy_shim.h>
47 #define WLC_ANTSEL_11N_0(ant) ((((ant) & ANT_SELCFG_MASK) >> 4) & 0xf)
48 #define WLC_ANTSEL_11N_1(ant) (((ant) & ANT_SELCFG_MASK) & 0xf)
49 #define WLC_ANTIDX_11N(ant) (((WLC_ANTSEL_11N_0(ant)) << 2) + (WLC_ANTSEL_11N_1(ant)))
50 #define WLC_ANT_ISAUTO_11N(ant) (((ant) & ANT_SELCFG_AUTO) == ANT_SELCFG_AUTO)
51 #define WLC_ANTSEL_11N(ant) ((ant) & ANT_SELCFG_MASK)
54 /* defines for no boardlevel antenna diversity */
55 #define ANT_SELCFG_DEF_2x2 0x01 /* default antenna configuration */
57 /* 2x3 antdiv defines and tables for GPIO communication */
58 #define ANT_SELCFG_NUM_2x3 3
59 #define ANT_SELCFG_DEF_2x3 0x01 /* default antenna configuration */
61 /* 2x4 antdiv rev4 defines and tables for GPIO communication */
62 #define ANT_SELCFG_NUM_2x4 4
63 #define ANT_SELCFG_DEF_2x4 0x02 /* default antenna configuration */
65 /* static functions */
66 static int wlc_antsel_cfgupd(struct antsel_info *asi, wlc_antselcfg_t *antsel);
67 static u8 wlc_antsel_id2antcfg(struct antsel_info *asi, u8 id);
68 static u16 wlc_antsel_antcfg2antsel(struct antsel_info *asi, u8 ant_cfg);
69 static void wlc_antsel_init_cfg(struct antsel_info *asi,
70 wlc_antselcfg_t *antsel,
73 const u16 mimo_2x4_div_antselpat_tbl[] = {
74 0, 0, 0x9, 0xa, /* ant0: 0 ant1: 2,3 */
75 0, 0, 0x5, 0x6, /* ant0: 1 ant1: 2,3 */
76 0, 0, 0, 0, /* n.a. */
80 const u8 mimo_2x4_div_antselid_tbl[16] = {
81 0, 0, 0, 0, 0, 2, 3, 0,
82 0, 0, 1, 0, 0, 0, 0, 0 /* pat to antselid */
85 const u16 mimo_2x3_div_antselpat_tbl[] = {
86 16, 0, 1, 16, /* ant0: 0 ant1: 1,2 */
87 16, 16, 16, 16, /* n.a. */
88 16, 2, 16, 16, /* ant0: 2 ant1: 1 */
89 16, 16, 16, 16 /* n.a. */
92 const u8 mimo_2x3_div_antselid_tbl[16] = {
93 0, 1, 2, 0, 0, 0, 0, 0,
94 0, 0, 0, 0, 0, 0, 0, 0 /* pat to antselid */
97 struct antsel_info *wlc_antsel_attach(struct wlc_info *wlc,
100 struct wlc_hw_info *wlc_hw) {
101 struct antsel_info *asi;
103 asi = kzalloc(sizeof(struct antsel_info), GFP_ATOMIC);
105 WL_ERROR("wl%d: wlc_antsel_attach: out of mem\n", pub->unit);
111 asi->antsel_type = ANTSEL_NA;
112 asi->antsel_avail = false;
113 asi->antsel_antswitch = (u8) getintvar(asi->pub->vars, "antswitch");
115 if ((asi->pub->sromrev >= 4) && (asi->antsel_antswitch != 0)) {
116 switch (asi->antsel_antswitch) {
117 case ANTSWITCH_TYPE_1:
118 case ANTSWITCH_TYPE_2:
119 case ANTSWITCH_TYPE_3:
120 /* 4321/2 board with 2x3 switch logic */
121 asi->antsel_type = ANTSEL_2x3;
122 /* Antenna selection availability */
123 if (((u16) getintvar(asi->pub->vars, "aa2g") == 7) ||
124 ((u16) getintvar(asi->pub->vars, "aa5g") == 7)) {
125 asi->antsel_avail = true;
127 if (((u16) getintvar(asi->pub->vars, "aa2g") ==
129 || ((u16) getintvar(asi->pub->vars, "aa5g")
131 asi->antsel_avail = false;
133 asi->antsel_avail = false;
134 WL_ERROR("wlc_antsel_attach: 2o3 board cfg invalid\n");
141 } else if ((asi->pub->sromrev == 4) &&
142 ((u16) getintvar(asi->pub->vars, "aa2g") == 7) &&
143 ((u16) getintvar(asi->pub->vars, "aa5g") == 0)) {
144 /* hack to match old 4321CB2 cards with 2of3 antenna switch */
145 asi->antsel_type = ANTSEL_2x3;
146 asi->antsel_avail = true;
147 } else if (asi->pub->boardflags2 & BFL2_2X4_DIV) {
148 asi->antsel_type = ANTSEL_2x4;
149 asi->antsel_avail = true;
152 /* Set the antenna selection type for the low driver */
153 wlc_bmac_antsel_type_set(wlc_hw, asi->antsel_type);
155 /* Init (auto/manual) antenna selection */
156 wlc_antsel_init_cfg(asi, &asi->antcfg_11n, true);
157 wlc_antsel_init_cfg(asi, &asi->antcfg_cur, true);
162 void wlc_antsel_detach(struct antsel_info *asi)
170 void wlc_antsel_init(struct antsel_info *asi)
172 if ((asi->antsel_type == ANTSEL_2x3) ||
173 (asi->antsel_type == ANTSEL_2x4))
174 wlc_antsel_cfgupd(asi, &asi->antcfg_11n);
177 /* boardlevel antenna selection: init antenna selection structure */
179 wlc_antsel_init_cfg(struct antsel_info *asi, wlc_antselcfg_t *antsel,
182 if (asi->antsel_type == ANTSEL_2x3) {
183 u8 antcfg_def = ANT_SELCFG_DEF_2x3 |
184 ((asi->antsel_avail && auto_sel) ? ANT_SELCFG_AUTO : 0);
185 antsel->ant_config[ANT_SELCFG_TX_DEF] = antcfg_def;
186 antsel->ant_config[ANT_SELCFG_TX_UNICAST] = antcfg_def;
187 antsel->ant_config[ANT_SELCFG_RX_DEF] = antcfg_def;
188 antsel->ant_config[ANT_SELCFG_RX_UNICAST] = antcfg_def;
189 antsel->num_antcfg = ANT_SELCFG_NUM_2x3;
191 } else if (asi->antsel_type == ANTSEL_2x4) {
193 antsel->ant_config[ANT_SELCFG_TX_DEF] = ANT_SELCFG_DEF_2x4;
194 antsel->ant_config[ANT_SELCFG_TX_UNICAST] = ANT_SELCFG_DEF_2x4;
195 antsel->ant_config[ANT_SELCFG_RX_DEF] = ANT_SELCFG_DEF_2x4;
196 antsel->ant_config[ANT_SELCFG_RX_UNICAST] = ANT_SELCFG_DEF_2x4;
197 antsel->num_antcfg = ANT_SELCFG_NUM_2x4;
199 } else { /* no antenna selection available */
201 antsel->ant_config[ANT_SELCFG_TX_DEF] = ANT_SELCFG_DEF_2x2;
202 antsel->ant_config[ANT_SELCFG_TX_UNICAST] = ANT_SELCFG_DEF_2x2;
203 antsel->ant_config[ANT_SELCFG_RX_DEF] = ANT_SELCFG_DEF_2x2;
204 antsel->ant_config[ANT_SELCFG_RX_UNICAST] = ANT_SELCFG_DEF_2x2;
205 antsel->num_antcfg = 0;
210 wlc_antsel_antcfg_get(struct antsel_info *asi, bool usedef, bool sel,
211 u8 antselid, u8 fbantselid, u8 *antcfg,
216 /* if use default, assign it and return */
218 *antcfg = asi->antcfg_11n.ant_config[ANT_SELCFG_TX_DEF];
224 *antcfg = asi->antcfg_11n.ant_config[ANT_SELCFG_TX_UNICAST];
228 ant = asi->antcfg_11n.ant_config[ANT_SELCFG_TX_UNICAST];
229 if ((ant & ANT_SELCFG_AUTO) == ANT_SELCFG_AUTO) {
230 *antcfg = wlc_antsel_id2antcfg(asi, antselid);
231 *fbantcfg = wlc_antsel_id2antcfg(asi, fbantselid);
234 asi->antcfg_11n.ant_config[ANT_SELCFG_TX_UNICAST];
241 /* boardlevel antenna selection: convert mimo_antsel (ucode interface) to id */
242 u8 wlc_antsel_antsel2id(struct antsel_info *asi, u16 antsel)
246 if (asi->antsel_type == ANTSEL_2x4) {
247 /* 2x4 antenna diversity board, 4 cfgs: 0-2 0-3 1-2 1-3 */
248 antselid = mimo_2x4_div_antselid_tbl[(antsel & 0xf)];
251 } else if (asi->antsel_type == ANTSEL_2x3) {
252 /* 2x3 antenna selection, 3 cfgs: 0-1 0-2 2-1 */
253 antselid = mimo_2x3_div_antselid_tbl[(antsel & 0xf)];
260 /* boardlevel antenna selection: convert id to ant_cfg */
261 static u8 wlc_antsel_id2antcfg(struct antsel_info *asi, u8 id)
263 u8 antcfg = ANT_SELCFG_DEF_2x2;
265 if (asi->antsel_type == ANTSEL_2x4) {
266 /* 2x4 antenna diversity board, 4 cfgs: 0-2 0-3 1-2 1-3 */
267 antcfg = (((id & 0x2) << 3) | ((id & 0x1) + 2));
270 } else if (asi->antsel_type == ANTSEL_2x3) {
271 /* 2x3 antenna selection, 3 cfgs: 0-1 0-2 2-1 */
272 antcfg = (((id & 0x02) << 4) | ((id & 0x1) + 1));
279 /* boardlevel antenna selection: convert ant_cfg to mimo_antsel (ucode interface) */
280 static u16 wlc_antsel_antcfg2antsel(struct antsel_info *asi, u8 ant_cfg)
282 u8 idx = WLC_ANTIDX_11N(WLC_ANTSEL_11N(ant_cfg));
285 if (asi->antsel_type == ANTSEL_2x4) {
286 /* 2x4 antenna diversity board, 4 cfgs: 0-2 0-3 1-2 1-3 */
287 mimo_antsel = (mimo_2x4_div_antselpat_tbl[idx] & 0xf);
290 } else if (asi->antsel_type == ANTSEL_2x3) {
291 /* 2x3 antenna selection, 3 cfgs: 0-1 0-2 2-1 */
292 mimo_antsel = (mimo_2x3_div_antselpat_tbl[idx] & 0xf);
299 /* boardlevel antenna selection: ucode interface control */
300 static int wlc_antsel_cfgupd(struct antsel_info *asi, wlc_antselcfg_t *antsel)
302 struct wlc_info *wlc = asi->wlc;
306 ASSERT(asi->antsel_type != ANTSEL_NA);
308 /* 1) Update TX antconfig for all frames that are not unicast data
311 ant_cfg = antsel->ant_config[ANT_SELCFG_TX_DEF];
312 mimo_antsel = wlc_antsel_antcfg2antsel(asi, ant_cfg);
313 wlc_write_shm(wlc, M_MIMO_ANTSEL_TXDFLT, mimo_antsel);
314 /* Update driver stats for currently selected default tx/rx antenna config */
315 asi->antcfg_cur.ant_config[ANT_SELCFG_TX_DEF] = ant_cfg;
317 /* 2) Update RX antconfig for all frames that are not unicast data
320 ant_cfg = antsel->ant_config[ANT_SELCFG_RX_DEF];
321 mimo_antsel = wlc_antsel_antcfg2antsel(asi, ant_cfg);
322 wlc_write_shm(wlc, M_MIMO_ANTSEL_RXDFLT, mimo_antsel);
323 /* Update driver stats for currently selected default tx/rx antenna config */
324 asi->antcfg_cur.ant_config[ANT_SELCFG_RX_DEF] = ant_cfg;
329 #endif /* WLANTSEL */