Commit | Line | Data |
---|---|---|
fe8ee9ad CL |
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 | ||
80d6e96b | 39 | #include <asm/div64.h> |
fe8ee9ad CL |
40 | #include "carl9170.h" |
41 | #include "cmd.h" | |
42 | ||
43 | int carl9170_write_reg(struct ar9170 *ar, const u32 reg, const u32 val) | |
44 | { | |
5653a63d | 45 | const __le32 buf[2] = { |
fe8ee9ad CL |
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 | ||
2c208890 | 141 | err = __carl9170_exec_cmd(ar, cmd, true); |
fe8ee9ad CL |
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 | ||
acf17712 CL |
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]; | |
80d6e96b CL |
191 | info->channel_time = ar->tally.active; |
192 | info->channel_time_busy = ar->tally.cca; | |
193 | info->channel_time_tx = ar->tally.tx_time; | |
194 | do_div(info->channel_time, 1000); | |
195 | do_div(info->channel_time_busy, 1000); | |
196 | do_div(info->channel_time_tx, 1000); | |
acf17712 CL |
197 | } |
198 | } | |
199 | return 0; | |
200 | } | |
201 | ||
fe8ee9ad CL |
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 | } |