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.
17 #include <linux/kernel.h>
18 #include <linux/module.h>
19 #include <linux/pci.h>
22 #include <brcmu_utils.h>
24 #include <brcm_hw_ids.h>
32 #include "phy/phy_hal.h"
33 #include "bottom_mac.h"
38 #define ANT_SELCFG_AUTO 0x80 /* bit indicates antenna sel AUTO */
39 #define ANT_SELCFG_MASK 0x33 /* antenna configuration mask */
40 #define ANT_SELCFG_TX_UNICAST 0 /* unicast tx antenna configuration */
41 #define ANT_SELCFG_RX_UNICAST 1 /* unicast rx antenna configuration */
42 #define ANT_SELCFG_TX_DEF 2 /* default tx antenna configuration */
43 #define ANT_SELCFG_RX_DEF 3 /* default rx antenna configuration */
46 #define WLC_ANTSEL_11N_0(ant) ((((ant) & ANT_SELCFG_MASK) >> 4) & 0xf)
47 #define WLC_ANTSEL_11N_1(ant) (((ant) & ANT_SELCFG_MASK) & 0xf)
48 #define WLC_ANTIDX_11N(ant) (((WLC_ANTSEL_11N_0(ant)) << 2) + (WLC_ANTSEL_11N_1(ant)))
49 #define WLC_ANT_ISAUTO_11N(ant) (((ant) & ANT_SELCFG_AUTO) == ANT_SELCFG_AUTO)
50 #define WLC_ANTSEL_11N(ant) ((ant) & ANT_SELCFG_MASK)
53 /* defines for no boardlevel antenna diversity */
54 #define ANT_SELCFG_DEF_2x2 0x01 /* default antenna configuration */
56 /* 2x3 antdiv defines and tables for GPIO communication */
57 #define ANT_SELCFG_NUM_2x3 3
58 #define ANT_SELCFG_DEF_2x3 0x01 /* default antenna configuration */
60 /* 2x4 antdiv rev4 defines and tables for GPIO communication */
61 #define ANT_SELCFG_NUM_2x4 4
62 #define ANT_SELCFG_DEF_2x4 0x02 /* default antenna configuration */
64 /* static functions */
65 static int wlc_antsel_cfgupd(struct antsel_info *asi, wlc_antselcfg_t *antsel);
66 static u8 wlc_antsel_id2antcfg(struct antsel_info *asi, u8 id);
67 static u16 wlc_antsel_antcfg2antsel(struct antsel_info *asi, u8 ant_cfg);
68 static void wlc_antsel_init_cfg(struct antsel_info *asi,
69 wlc_antselcfg_t *antsel,
72 const u16 mimo_2x4_div_antselpat_tbl[] = {
73 0, 0, 0x9, 0xa, /* ant0: 0 ant1: 2,3 */
74 0, 0, 0x5, 0x6, /* ant0: 1 ant1: 2,3 */
75 0, 0, 0, 0, /* n.a. */
79 const u8 mimo_2x4_div_antselid_tbl[16] = {
80 0, 0, 0, 0, 0, 2, 3, 0,
81 0, 0, 1, 0, 0, 0, 0, 0 /* pat to antselid */
84 const u16 mimo_2x3_div_antselpat_tbl[] = {
85 16, 0, 1, 16, /* ant0: 0 ant1: 1,2 */
86 16, 16, 16, 16, /* n.a. */
87 16, 2, 16, 16, /* ant0: 2 ant1: 1 */
88 16, 16, 16, 16 /* n.a. */
91 const u8 mimo_2x3_div_antselid_tbl[16] = {
92 0, 1, 2, 0, 0, 0, 0, 0,
93 0, 0, 0, 0, 0, 0, 0, 0 /* pat to antselid */
96 struct antsel_info *wlc_antsel_attach(struct wlc_info *wlc)
98 struct antsel_info *asi;
100 asi = kzalloc(sizeof(struct antsel_info), GFP_ATOMIC);
102 wiphy_err(wlc->wiphy, "wl%d: wlc_antsel_attach: out of mem\n",
109 asi->antsel_type = ANTSEL_NA;
110 asi->antsel_avail = false;
111 asi->antsel_antswitch = (u8) getintvar(asi->pub->vars, "antswitch");
113 if ((asi->pub->sromrev >= 4) && (asi->antsel_antswitch != 0)) {
114 switch (asi->antsel_antswitch) {
115 case ANTSWITCH_TYPE_1:
116 case ANTSWITCH_TYPE_2:
117 case ANTSWITCH_TYPE_3:
118 /* 4321/2 board with 2x3 switch logic */
119 asi->antsel_type = ANTSEL_2x3;
120 /* Antenna selection availability */
121 if (((u16) getintvar(asi->pub->vars, "aa2g") == 7) ||
122 ((u16) getintvar(asi->pub->vars, "aa5g") == 7)) {
123 asi->antsel_avail = true;
125 if (((u16) getintvar(asi->pub->vars, "aa2g") ==
127 || ((u16) getintvar(asi->pub->vars, "aa5g")
129 asi->antsel_avail = false;
131 asi->antsel_avail = false;
132 wiphy_err(wlc->wiphy, "wlc_antsel_attach: 2o3 "
133 "board cfg invalid\n");
139 } else if ((asi->pub->sromrev == 4) &&
140 ((u16) getintvar(asi->pub->vars, "aa2g") == 7) &&
141 ((u16) getintvar(asi->pub->vars, "aa5g") == 0)) {
142 /* hack to match old 4321CB2 cards with 2of3 antenna switch */
143 asi->antsel_type = ANTSEL_2x3;
144 asi->antsel_avail = true;
145 } else if (asi->pub->boardflags2 & BFL2_2X4_DIV) {
146 asi->antsel_type = ANTSEL_2x4;
147 asi->antsel_avail = true;
150 /* Set the antenna selection type for the low driver */
151 wlc_bmac_antsel_type_set(wlc->hw, asi->antsel_type);
153 /* Init (auto/manual) antenna selection */
154 wlc_antsel_init_cfg(asi, &asi->antcfg_11n, true);
155 wlc_antsel_init_cfg(asi, &asi->antcfg_cur, true);
160 void wlc_antsel_detach(struct antsel_info *asi)
165 void wlc_antsel_init(struct antsel_info *asi)
167 if ((asi->antsel_type == ANTSEL_2x3) ||
168 (asi->antsel_type == ANTSEL_2x4))
169 wlc_antsel_cfgupd(asi, &asi->antcfg_11n);
172 /* boardlevel antenna selection: init antenna selection structure */
174 wlc_antsel_init_cfg(struct antsel_info *asi, wlc_antselcfg_t *antsel,
177 if (asi->antsel_type == ANTSEL_2x3) {
178 u8 antcfg_def = ANT_SELCFG_DEF_2x3 |
179 ((asi->antsel_avail && auto_sel) ? ANT_SELCFG_AUTO : 0);
180 antsel->ant_config[ANT_SELCFG_TX_DEF] = antcfg_def;
181 antsel->ant_config[ANT_SELCFG_TX_UNICAST] = antcfg_def;
182 antsel->ant_config[ANT_SELCFG_RX_DEF] = antcfg_def;
183 antsel->ant_config[ANT_SELCFG_RX_UNICAST] = antcfg_def;
184 antsel->num_antcfg = ANT_SELCFG_NUM_2x3;
186 } else if (asi->antsel_type == ANTSEL_2x4) {
188 antsel->ant_config[ANT_SELCFG_TX_DEF] = ANT_SELCFG_DEF_2x4;
189 antsel->ant_config[ANT_SELCFG_TX_UNICAST] = ANT_SELCFG_DEF_2x4;
190 antsel->ant_config[ANT_SELCFG_RX_DEF] = ANT_SELCFG_DEF_2x4;
191 antsel->ant_config[ANT_SELCFG_RX_UNICAST] = ANT_SELCFG_DEF_2x4;
192 antsel->num_antcfg = ANT_SELCFG_NUM_2x4;
194 } else { /* no antenna selection available */
196 antsel->ant_config[ANT_SELCFG_TX_DEF] = ANT_SELCFG_DEF_2x2;
197 antsel->ant_config[ANT_SELCFG_TX_UNICAST] = ANT_SELCFG_DEF_2x2;
198 antsel->ant_config[ANT_SELCFG_RX_DEF] = ANT_SELCFG_DEF_2x2;
199 antsel->ant_config[ANT_SELCFG_RX_UNICAST] = ANT_SELCFG_DEF_2x2;
200 antsel->num_antcfg = 0;
205 wlc_antsel_antcfg_get(struct antsel_info *asi, bool usedef, bool sel,
206 u8 antselid, u8 fbantselid, u8 *antcfg,
211 /* if use default, assign it and return */
213 *antcfg = asi->antcfg_11n.ant_config[ANT_SELCFG_TX_DEF];
219 *antcfg = asi->antcfg_11n.ant_config[ANT_SELCFG_TX_UNICAST];
223 ant = asi->antcfg_11n.ant_config[ANT_SELCFG_TX_UNICAST];
224 if ((ant & ANT_SELCFG_AUTO) == ANT_SELCFG_AUTO) {
225 *antcfg = wlc_antsel_id2antcfg(asi, antselid);
226 *fbantcfg = wlc_antsel_id2antcfg(asi, fbantselid);
229 asi->antcfg_11n.ant_config[ANT_SELCFG_TX_UNICAST];
236 /* boardlevel antenna selection: convert mimo_antsel (ucode interface) to id */
237 u8 wlc_antsel_antsel2id(struct antsel_info *asi, u16 antsel)
241 if (asi->antsel_type == ANTSEL_2x4) {
242 /* 2x4 antenna diversity board, 4 cfgs: 0-2 0-3 1-2 1-3 */
243 antselid = mimo_2x4_div_antselid_tbl[(antsel & 0xf)];
246 } else if (asi->antsel_type == ANTSEL_2x3) {
247 /* 2x3 antenna selection, 3 cfgs: 0-1 0-2 2-1 */
248 antselid = mimo_2x3_div_antselid_tbl[(antsel & 0xf)];
255 /* boardlevel antenna selection: convert id to ant_cfg */
256 static u8 wlc_antsel_id2antcfg(struct antsel_info *asi, u8 id)
258 u8 antcfg = ANT_SELCFG_DEF_2x2;
260 if (asi->antsel_type == ANTSEL_2x4) {
261 /* 2x4 antenna diversity board, 4 cfgs: 0-2 0-3 1-2 1-3 */
262 antcfg = (((id & 0x2) << 3) | ((id & 0x1) + 2));
265 } else if (asi->antsel_type == ANTSEL_2x3) {
266 /* 2x3 antenna selection, 3 cfgs: 0-1 0-2 2-1 */
267 antcfg = (((id & 0x02) << 4) | ((id & 0x1) + 1));
274 /* boardlevel antenna selection: convert ant_cfg to mimo_antsel (ucode interface) */
275 static u16 wlc_antsel_antcfg2antsel(struct antsel_info *asi, u8 ant_cfg)
277 u8 idx = WLC_ANTIDX_11N(WLC_ANTSEL_11N(ant_cfg));
280 if (asi->antsel_type == ANTSEL_2x4) {
281 /* 2x4 antenna diversity board, 4 cfgs: 0-2 0-3 1-2 1-3 */
282 mimo_antsel = (mimo_2x4_div_antselpat_tbl[idx] & 0xf);
285 } else if (asi->antsel_type == ANTSEL_2x3) {
286 /* 2x3 antenna selection, 3 cfgs: 0-1 0-2 2-1 */
287 mimo_antsel = (mimo_2x3_div_antselpat_tbl[idx] & 0xf);
294 /* boardlevel antenna selection: ucode interface control */
295 static int wlc_antsel_cfgupd(struct antsel_info *asi, wlc_antselcfg_t *antsel)
297 struct wlc_info *wlc = asi->wlc;
301 /* 1) Update TX antconfig for all frames that are not unicast data
304 ant_cfg = antsel->ant_config[ANT_SELCFG_TX_DEF];
305 mimo_antsel = wlc_antsel_antcfg2antsel(asi, ant_cfg);
306 wlc_write_shm(wlc, M_MIMO_ANTSEL_TXDFLT, mimo_antsel);
307 /* Update driver stats for currently selected default tx/rx antenna config */
308 asi->antcfg_cur.ant_config[ANT_SELCFG_TX_DEF] = ant_cfg;
310 /* 2) Update RX antconfig for all frames that are not unicast data
313 ant_cfg = antsel->ant_config[ANT_SELCFG_RX_DEF];
314 mimo_antsel = wlc_antsel_antcfg2antsel(asi, ant_cfg);
315 wlc_write_shm(wlc, M_MIMO_ANTSEL_RXDFLT, mimo_antsel);
316 /* Update driver stats for currently selected default tx/rx antenna config */
317 asi->antcfg_cur.ant_config[ANT_SELCFG_RX_DEF] = ant_cfg;