| /* |
| * Copyright (c) 2010 Broadcom Corporation |
| * |
| * Permission to use, copy, modify, and/or distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
| * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
| * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| #include <linux/slab.h> |
| #include <net/mac80211.h> |
| |
| #include "types.h" |
| #include "main.h" |
| #include "phy_shim.h" |
| #include "antsel.h" |
| #include "debug.h" |
| |
| #define ANT_SELCFG_AUTO 0x80 /* bit indicates antenna sel AUTO */ |
| #define ANT_SELCFG_MASK 0x33 /* antenna configuration mask */ |
| #define ANT_SELCFG_TX_UNICAST 0 /* unicast tx antenna configuration */ |
| #define ANT_SELCFG_RX_UNICAST 1 /* unicast rx antenna configuration */ |
| #define ANT_SELCFG_TX_DEF 2 /* default tx antenna configuration */ |
| #define ANT_SELCFG_RX_DEF 3 /* default rx antenna configuration */ |
| |
| /* useful macros */ |
| #define BRCMS_ANTSEL_11N_0(ant) ((((ant) & ANT_SELCFG_MASK) >> 4) & 0xf) |
| #define BRCMS_ANTSEL_11N_1(ant) (((ant) & ANT_SELCFG_MASK) & 0xf) |
| #define BRCMS_ANTIDX_11N(ant) (((BRCMS_ANTSEL_11N_0(ant)) << 2) +\ |
| (BRCMS_ANTSEL_11N_1(ant))) |
| #define BRCMS_ANT_ISAUTO_11N(ant) (((ant) & ANT_SELCFG_AUTO) == ANT_SELCFG_AUTO) |
| #define BRCMS_ANTSEL_11N(ant) ((ant) & ANT_SELCFG_MASK) |
| |
| /* antenna switch */ |
| /* defines for no boardlevel antenna diversity */ |
| #define ANT_SELCFG_DEF_2x2 0x01 /* default antenna configuration */ |
| |
| /* 2x3 antdiv defines and tables for GPIO communication */ |
| #define ANT_SELCFG_NUM_2x3 3 |
| #define ANT_SELCFG_DEF_2x3 0x01 /* default antenna configuration */ |
| |
| /* 2x4 antdiv rev4 defines and tables for GPIO communication */ |
| #define ANT_SELCFG_NUM_2x4 4 |
| #define ANT_SELCFG_DEF_2x4 0x02 /* default antenna configuration */ |
| |
| static const u16 mimo_2x4_div_antselpat_tbl[] = { |
| 0, 0, 0x9, 0xa, /* ant0: 0 ant1: 2,3 */ |
| 0, 0, 0x5, 0x6, /* ant0: 1 ant1: 2,3 */ |
| 0, 0, 0, 0, /* n.a. */ |
| 0, 0, 0, 0 /* n.a. */ |
| }; |
| |
| static const u8 mimo_2x4_div_antselid_tbl[16] = { |
| 0, 0, 0, 0, 0, 2, 3, 0, |
| 0, 0, 1, 0, 0, 0, 0, 0 /* pat to antselid */ |
| }; |
| |
| static const u16 mimo_2x3_div_antselpat_tbl[] = { |
| 16, 0, 1, 16, /* ant0: 0 ant1: 1,2 */ |
| 16, 16, 16, 16, /* n.a. */ |
| 16, 2, 16, 16, /* ant0: 2 ant1: 1 */ |
| 16, 16, 16, 16 /* n.a. */ |
| }; |
| |
| static const u8 mimo_2x3_div_antselid_tbl[16] = { |
| 0, 1, 2, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0 /* pat to antselid */ |
| }; |
| |
| /* boardlevel antenna selection: init antenna selection structure */ |
| static void |
| brcms_c_antsel_init_cfg(struct antsel_info *asi, struct brcms_antselcfg *antsel, |
| bool auto_sel) |
| { |
| if (asi->antsel_type == ANTSEL_2x3) { |
| u8 antcfg_def = ANT_SELCFG_DEF_2x3 | |
| ((asi->antsel_avail && auto_sel) ? ANT_SELCFG_AUTO : 0); |
| antsel->ant_config[ANT_SELCFG_TX_DEF] = antcfg_def; |
| antsel->ant_config[ANT_SELCFG_TX_UNICAST] = antcfg_def; |
| antsel->ant_config[ANT_SELCFG_RX_DEF] = antcfg_def; |
| antsel->ant_config[ANT_SELCFG_RX_UNICAST] = antcfg_def; |
| antsel->num_antcfg = ANT_SELCFG_NUM_2x3; |
| |
| } else if (asi->antsel_type == ANTSEL_2x4) { |
| |
| antsel->ant_config[ANT_SELCFG_TX_DEF] = ANT_SELCFG_DEF_2x4; |
| antsel->ant_config[ANT_SELCFG_TX_UNICAST] = ANT_SELCFG_DEF_2x4; |
| antsel->ant_config[ANT_SELCFG_RX_DEF] = ANT_SELCFG_DEF_2x4; |
| antsel->ant_config[ANT_SELCFG_RX_UNICAST] = ANT_SELCFG_DEF_2x4; |
| antsel->num_antcfg = ANT_SELCFG_NUM_2x4; |
| |
| } else { /* no antenna selection available */ |
| |
| antsel->ant_config[ANT_SELCFG_TX_DEF] = ANT_SELCFG_DEF_2x2; |
| antsel->ant_config[ANT_SELCFG_TX_UNICAST] = ANT_SELCFG_DEF_2x2; |
| antsel->ant_config[ANT_SELCFG_RX_DEF] = ANT_SELCFG_DEF_2x2; |
| antsel->ant_config[ANT_SELCFG_RX_UNICAST] = ANT_SELCFG_DEF_2x2; |
| antsel->num_antcfg = 0; |
| } |
| } |
| |
| struct antsel_info *brcms_c_antsel_attach(struct brcms_c_info *wlc) |
| { |
| struct antsel_info *asi; |
| struct ssb_sprom *sprom = &wlc->hw->d11core->bus->sprom; |
| |
| asi = kzalloc(sizeof(struct antsel_info), GFP_ATOMIC); |
| if (!asi) |
| return NULL; |
| |
| asi->wlc = wlc; |
| asi->pub = wlc->pub; |
| asi->antsel_type = ANTSEL_NA; |
| asi->antsel_avail = false; |
| asi->antsel_antswitch = sprom->antswitch; |
| |
| if ((asi->pub->sromrev >= 4) && (asi->antsel_antswitch != 0)) { |
| switch (asi->antsel_antswitch) { |
| case ANTSWITCH_TYPE_1: |
| case ANTSWITCH_TYPE_2: |
| case ANTSWITCH_TYPE_3: |
| /* 4321/2 board with 2x3 switch logic */ |
| asi->antsel_type = ANTSEL_2x3; |
| /* Antenna selection availability */ |
| if ((sprom->ant_available_bg == 7) || |
| (sprom->ant_available_a == 7)) { |
| asi->antsel_avail = true; |
| } else if ( |
| sprom->ant_available_bg == 3 || |
| sprom->ant_available_a == 3) { |
| asi->antsel_avail = false; |
| } else { |
| asi->antsel_avail = false; |
| brcms_err(wlc->hw->d11core, |
| "antsel_attach: 2o3 " |
| "board cfg invalid\n"); |
| } |
| |
| break; |
| default: |
| break; |
| } |
| } else if ((asi->pub->sromrev == 4) && |
| (sprom->ant_available_bg == 7) && |
| (sprom->ant_available_a == 0)) { |
| /* hack to match old 4321CB2 cards with 2of3 antenna switch */ |
| asi->antsel_type = ANTSEL_2x3; |
| asi->antsel_avail = true; |
| } else if (asi->pub->boardflags2 & BFL2_2X4_DIV) { |
| asi->antsel_type = ANTSEL_2x4; |
| asi->antsel_avail = true; |
| } |
| |
| /* Set the antenna selection type for the low driver */ |
| brcms_b_antsel_type_set(wlc->hw, asi->antsel_type); |
| |
| /* Init (auto/manual) antenna selection */ |
| brcms_c_antsel_init_cfg(asi, &asi->antcfg_11n, true); |
| brcms_c_antsel_init_cfg(asi, &asi->antcfg_cur, true); |
| |
| return asi; |
| } |
| |
| void brcms_c_antsel_detach(struct antsel_info *asi) |
| { |
| kfree(asi); |
| } |
| |
| /* |
| * boardlevel antenna selection: |
| * convert ant_cfg to mimo_antsel (ucode interface) |
| */ |
| static u16 brcms_c_antsel_antcfg2antsel(struct antsel_info *asi, u8 ant_cfg) |
| { |
| u8 idx = BRCMS_ANTIDX_11N(BRCMS_ANTSEL_11N(ant_cfg)); |
| u16 mimo_antsel = 0; |
| |
| if (asi->antsel_type == ANTSEL_2x4) { |
| /* 2x4 antenna diversity board, 4 cfgs: 0-2 0-3 1-2 1-3 */ |
| mimo_antsel = (mimo_2x4_div_antselpat_tbl[idx] & 0xf); |
| return mimo_antsel; |
| |
| } else if (asi->antsel_type == ANTSEL_2x3) { |
| /* 2x3 antenna selection, 3 cfgs: 0-1 0-2 2-1 */ |
| mimo_antsel = (mimo_2x3_div_antselpat_tbl[idx] & 0xf); |
| return mimo_antsel; |
| } |
| |
| return mimo_antsel; |
| } |
| |
| /* boardlevel antenna selection: ucode interface control */ |
| static int brcms_c_antsel_cfgupd(struct antsel_info *asi, |
| struct brcms_antselcfg *antsel) |
| { |
| struct brcms_c_info *wlc = asi->wlc; |
| u8 ant_cfg; |
| u16 mimo_antsel; |
| |
| /* 1) Update TX antconfig for all frames that are not unicast data |
| * (aka default TX) |
| */ |
| ant_cfg = antsel->ant_config[ANT_SELCFG_TX_DEF]; |
| mimo_antsel = brcms_c_antsel_antcfg2antsel(asi, ant_cfg); |
| brcms_b_write_shm(wlc->hw, M_MIMO_ANTSEL_TXDFLT, mimo_antsel); |
| /* |
| * Update driver stats for currently selected |
| * default tx/rx antenna config |
| */ |
| asi->antcfg_cur.ant_config[ANT_SELCFG_TX_DEF] = ant_cfg; |
| |
| /* 2) Update RX antconfig for all frames that are not unicast data |
| * (aka default RX) |
| */ |
| ant_cfg = antsel->ant_config[ANT_SELCFG_RX_DEF]; |
| mimo_antsel = brcms_c_antsel_antcfg2antsel(asi, ant_cfg); |
| brcms_b_write_shm(wlc->hw, M_MIMO_ANTSEL_RXDFLT, mimo_antsel); |
| /* |
| * Update driver stats for currently selected |
| * default tx/rx antenna config |
| */ |
| asi->antcfg_cur.ant_config[ANT_SELCFG_RX_DEF] = ant_cfg; |
| |
| return 0; |
| } |
| |
| void brcms_c_antsel_init(struct antsel_info *asi) |
| { |
| if ((asi->antsel_type == ANTSEL_2x3) || |
| (asi->antsel_type == ANTSEL_2x4)) |
| brcms_c_antsel_cfgupd(asi, &asi->antcfg_11n); |
| } |
| |
| /* boardlevel antenna selection: convert id to ant_cfg */ |
| static u8 brcms_c_antsel_id2antcfg(struct antsel_info *asi, u8 id) |
| { |
| u8 antcfg = ANT_SELCFG_DEF_2x2; |
| |
| if (asi->antsel_type == ANTSEL_2x4) { |
| /* 2x4 antenna diversity board, 4 cfgs: 0-2 0-3 1-2 1-3 */ |
| antcfg = (((id & 0x2) << 3) | ((id & 0x1) + 2)); |
| return antcfg; |
| |
| } else if (asi->antsel_type == ANTSEL_2x3) { |
| /* 2x3 antenna selection, 3 cfgs: 0-1 0-2 2-1 */ |
| antcfg = (((id & 0x02) << 4) | ((id & 0x1) + 1)); |
| return antcfg; |
| } |
| |
| return antcfg; |
| } |
| |
| void |
| brcms_c_antsel_antcfg_get(struct antsel_info *asi, bool usedef, bool sel, |
| u8 antselid, u8 fbantselid, u8 *antcfg, |
| u8 *fbantcfg) |
| { |
| u8 ant; |
| |
| /* if use default, assign it and return */ |
| if (usedef) { |
| *antcfg = asi->antcfg_11n.ant_config[ANT_SELCFG_TX_DEF]; |
| *fbantcfg = *antcfg; |
| return; |
| } |
| |
| if (!sel) { |
| *antcfg = asi->antcfg_11n.ant_config[ANT_SELCFG_TX_UNICAST]; |
| *fbantcfg = *antcfg; |
| |
| } else { |
| ant = asi->antcfg_11n.ant_config[ANT_SELCFG_TX_UNICAST]; |
| if ((ant & ANT_SELCFG_AUTO) == ANT_SELCFG_AUTO) { |
| *antcfg = brcms_c_antsel_id2antcfg(asi, antselid); |
| *fbantcfg = brcms_c_antsel_id2antcfg(asi, fbantselid); |
| } else { |
| *antcfg = |
| asi->antcfg_11n.ant_config[ANT_SELCFG_TX_UNICAST]; |
| *fbantcfg = *antcfg; |
| } |
| } |
| return; |
| } |
| |
| /* boardlevel antenna selection: convert mimo_antsel (ucode interface) to id */ |
| u8 brcms_c_antsel_antsel2id(struct antsel_info *asi, u16 antsel) |
| { |
| u8 antselid = 0; |
| |
| if (asi->antsel_type == ANTSEL_2x4) { |
| /* 2x4 antenna diversity board, 4 cfgs: 0-2 0-3 1-2 1-3 */ |
| antselid = mimo_2x4_div_antselid_tbl[(antsel & 0xf)]; |
| return antselid; |
| |
| } else if (asi->antsel_type == ANTSEL_2x3) { |
| /* 2x3 antenna selection, 3 cfgs: 0-1 0-2 2-1 */ |
| antselid = mimo_2x3_div_antselid_tbl[(antsel & 0xf)]; |
| return antselid; |
| } |
| |
| return antselid; |
| } |
