Christian Lamparter | fe8ee9a | 2010-09-06 00:48:55 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Atheros CARL9170 driver |
| 3 | * |
| 4 | * Basic HW register/memory/command access functions |
| 5 | * |
| 6 | * Copyright 2008, Johannes Berg <johannes@sipsolutions.net> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; see the file COPYING. If not, see |
| 20 | * http://www.gnu.org/licenses/. |
| 21 | * |
| 22 | * This file incorporates work covered by the following copyright and |
| 23 | * permission notice: |
| 24 | * Copyright (c) 2007-2008 Atheros Communications, Inc. |
| 25 | * |
| 26 | * Permission to use, copy, modify, and/or distribute this software for any |
| 27 | * purpose with or without fee is hereby granted, provided that the above |
| 28 | * copyright notice and this permission notice appear in all copies. |
| 29 | * |
| 30 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 31 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 32 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 33 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 34 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 35 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 36 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 37 | */ |
| 38 | |
Christian Lamparter | 80d6e96 | 2011-08-25 15:00:54 +0200 | [diff] [blame] | 39 | #include <asm/div64.h> |
Christian Lamparter | fe8ee9a | 2010-09-06 00:48:55 +0200 | [diff] [blame] | 40 | #include "carl9170.h" |
| 41 | #include "cmd.h" |
| 42 | |
| 43 | int carl9170_write_reg(struct ar9170 *ar, const u32 reg, const u32 val) |
| 44 | { |
Joe Perches | 5653a63 | 2010-11-20 18:38:54 -0800 | [diff] [blame] | 45 | const __le32 buf[2] = { |
Christian Lamparter | fe8ee9a | 2010-09-06 00:48:55 +0200 | [diff] [blame] | 46 | cpu_to_le32(reg), |
| 47 | cpu_to_le32(val), |
| 48 | }; |
| 49 | int err; |
| 50 | |
| 51 | err = carl9170_exec_cmd(ar, CARL9170_CMD_WREG, sizeof(buf), |
| 52 | (u8 *) buf, 0, NULL); |
| 53 | if (err) { |
| 54 | if (net_ratelimit()) { |
| 55 | wiphy_err(ar->hw->wiphy, "writing reg %#x " |
| 56 | "(val %#x) failed (%d)\n", reg, val, err); |
| 57 | } |
| 58 | } |
| 59 | return err; |
| 60 | } |
| 61 | |
| 62 | int carl9170_read_mreg(struct ar9170 *ar, const int nregs, |
| 63 | const u32 *regs, u32 *out) |
| 64 | { |
| 65 | int i, err; |
| 66 | __le32 *offs, *res; |
| 67 | |
| 68 | /* abuse "out" for the register offsets, must be same length */ |
| 69 | offs = (__le32 *)out; |
| 70 | for (i = 0; i < nregs; i++) |
| 71 | offs[i] = cpu_to_le32(regs[i]); |
| 72 | |
| 73 | /* also use the same buffer for the input */ |
| 74 | res = (__le32 *)out; |
| 75 | |
| 76 | err = carl9170_exec_cmd(ar, CARL9170_CMD_RREG, |
| 77 | 4 * nregs, (u8 *)offs, |
| 78 | 4 * nregs, (u8 *)res); |
| 79 | if (err) { |
| 80 | if (net_ratelimit()) { |
| 81 | wiphy_err(ar->hw->wiphy, "reading regs failed (%d)\n", |
| 82 | err); |
| 83 | } |
| 84 | return err; |
| 85 | } |
| 86 | |
| 87 | /* convert result to cpu endian */ |
| 88 | for (i = 0; i < nregs; i++) |
| 89 | out[i] = le32_to_cpu(res[i]); |
| 90 | |
| 91 | return 0; |
| 92 | } |
| 93 | |
| 94 | int carl9170_read_reg(struct ar9170 *ar, u32 reg, u32 *val) |
| 95 | { |
| 96 | return carl9170_read_mreg(ar, 1, ®, val); |
| 97 | } |
| 98 | |
| 99 | int carl9170_echo_test(struct ar9170 *ar, const u32 v) |
| 100 | { |
| 101 | u32 echores; |
| 102 | int err; |
| 103 | |
| 104 | err = carl9170_exec_cmd(ar, CARL9170_CMD_ECHO, |
| 105 | 4, (u8 *)&v, |
| 106 | 4, (u8 *)&echores); |
| 107 | if (err) |
| 108 | return err; |
| 109 | |
| 110 | if (v != echores) { |
| 111 | wiphy_info(ar->hw->wiphy, "wrong echo %x != %x", v, echores); |
| 112 | return -EINVAL; |
| 113 | } |
| 114 | |
| 115 | return 0; |
| 116 | } |
| 117 | |
| 118 | struct carl9170_cmd *carl9170_cmd_buf(struct ar9170 *ar, |
| 119 | const enum carl9170_cmd_oids cmd, const unsigned int len) |
| 120 | { |
| 121 | struct carl9170_cmd *tmp; |
| 122 | |
| 123 | tmp = kzalloc(sizeof(struct carl9170_cmd_head) + len, GFP_ATOMIC); |
| 124 | if (tmp) { |
| 125 | tmp->hdr.cmd = cmd; |
| 126 | tmp->hdr.len = len; |
| 127 | } |
| 128 | |
| 129 | return tmp; |
| 130 | } |
| 131 | |
| 132 | int carl9170_reboot(struct ar9170 *ar) |
| 133 | { |
| 134 | struct carl9170_cmd *cmd; |
| 135 | int err; |
| 136 | |
| 137 | cmd = carl9170_cmd_buf(ar, CARL9170_CMD_REBOOT_ASYNC, 0); |
| 138 | if (!cmd) |
| 139 | return -ENOMEM; |
| 140 | |
Joe Perches | 2c20889 | 2012-06-04 12:44:17 +0000 | [diff] [blame] | 141 | err = __carl9170_exec_cmd(ar, cmd, true); |
Christian Lamparter | fe8ee9a | 2010-09-06 00:48:55 +0200 | [diff] [blame] | 142 | return err; |
| 143 | } |
| 144 | |
| 145 | int carl9170_mac_reset(struct ar9170 *ar) |
| 146 | { |
| 147 | return carl9170_exec_cmd(ar, CARL9170_CMD_SWRST, |
| 148 | 0, NULL, 0, NULL); |
| 149 | } |
| 150 | |
| 151 | int carl9170_bcn_ctrl(struct ar9170 *ar, const unsigned int vif_id, |
| 152 | const u32 mode, const u32 addr, const u32 len) |
| 153 | { |
| 154 | struct carl9170_cmd *cmd; |
| 155 | |
| 156 | cmd = carl9170_cmd_buf(ar, CARL9170_CMD_BCN_CTRL_ASYNC, |
| 157 | sizeof(struct carl9170_bcn_ctrl_cmd)); |
| 158 | if (!cmd) |
| 159 | return -ENOMEM; |
| 160 | |
| 161 | cmd->bcn_ctrl.vif_id = cpu_to_le32(vif_id); |
| 162 | cmd->bcn_ctrl.mode = cpu_to_le32(mode); |
| 163 | cmd->bcn_ctrl.bcn_addr = cpu_to_le32(addr); |
| 164 | cmd->bcn_ctrl.bcn_len = cpu_to_le32(len); |
| 165 | |
| 166 | return __carl9170_exec_cmd(ar, cmd, true); |
| 167 | } |
| 168 | |
Christian Lamparter | acf1771 | 2011-08-15 19:50:48 +0200 | [diff] [blame] | 169 | int carl9170_collect_tally(struct ar9170 *ar) |
| 170 | { |
| 171 | struct carl9170_tally_rsp tally; |
| 172 | struct survey_info *info; |
| 173 | unsigned int tick; |
| 174 | int err; |
| 175 | |
| 176 | err = carl9170_exec_cmd(ar, CARL9170_CMD_TALLY, 0, NULL, |
| 177 | sizeof(tally), (u8 *)&tally); |
| 178 | if (err) |
| 179 | return err; |
| 180 | |
| 181 | tick = le32_to_cpu(tally.tick); |
| 182 | if (tick) { |
| 183 | ar->tally.active += le32_to_cpu(tally.active) / tick; |
| 184 | ar->tally.cca += le32_to_cpu(tally.cca) / tick; |
| 185 | ar->tally.tx_time += le32_to_cpu(tally.tx_time) / tick; |
| 186 | ar->tally.rx_total += le32_to_cpu(tally.rx_total); |
| 187 | ar->tally.rx_overrun += le32_to_cpu(tally.rx_overrun); |
| 188 | |
| 189 | if (ar->channel) { |
| 190 | info = &ar->survey[ar->channel->hw_value]; |
Johannes Berg | 4ed20be | 2014-11-14 16:35:34 +0100 | [diff] [blame] | 191 | info->time = ar->tally.active; |
| 192 | info->time_busy = ar->tally.cca; |
| 193 | info->time_tx = ar->tally.tx_time; |
| 194 | do_div(info->time, 1000); |
| 195 | do_div(info->time_busy, 1000); |
| 196 | do_div(info->time_tx, 1000); |
Christian Lamparter | acf1771 | 2011-08-15 19:50:48 +0200 | [diff] [blame] | 197 | } |
| 198 | } |
| 199 | return 0; |
| 200 | } |
| 201 | |
Christian Lamparter | fe8ee9a | 2010-09-06 00:48:55 +0200 | [diff] [blame] | 202 | int carl9170_powersave(struct ar9170 *ar, const bool ps) |
| 203 | { |
| 204 | struct carl9170_cmd *cmd; |
| 205 | u32 state; |
| 206 | |
| 207 | cmd = carl9170_cmd_buf(ar, CARL9170_CMD_PSM_ASYNC, |
| 208 | sizeof(struct carl9170_psm)); |
| 209 | if (!cmd) |
| 210 | return -ENOMEM; |
| 211 | |
| 212 | if (ps) { |
| 213 | /* Sleep until next TBTT */ |
| 214 | state = CARL9170_PSM_SLEEP | 1; |
| 215 | } else { |
| 216 | /* wake up immediately */ |
| 217 | state = 1; |
| 218 | } |
| 219 | |
| 220 | cmd->psm.state = cpu_to_le32(state); |
| 221 | return __carl9170_exec_cmd(ar, cmd, true); |
| 222 | } |