| Christian Lamparter | e9348cd | 2009-03-21 23:05:13 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Atheros AR9170 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 | #ifndef __CMD_H |
| 39 | #define __CMD_H |
| 40 | |
| 41 | #include "ar9170.h" |
| 42 | |
| 43 | /* basic HW access */ |
| 44 | int ar9170_write_mem(struct ar9170 *ar, const __le32 *data, size_t len); |
| 45 | int ar9170_write_reg(struct ar9170 *ar, const u32 reg, const u32 val); |
| 46 | int ar9170_read_reg(struct ar9170 *ar, u32 reg, u32 *val); |
| 47 | int ar9170_echo_test(struct ar9170 *ar, u32 v); |
| 48 | |
| 49 | /* |
| 50 | * Macros to facilitate writing multiple registers in a single |
| 51 | * write-combining USB command. Note that when the first group |
| 52 | * fails the whole thing will fail without any others attempted, |
| 53 | * but you won't know which write in the group failed. |
| 54 | */ |
| 55 | #define ar9170_regwrite_begin(ar) \ |
| 56 | do { \ |
| 57 | int __nreg = 0, __err = 0; \ |
| 58 | struct ar9170 *__ar = ar; |
| 59 | |
| 60 | #define ar9170_regwrite(r, v) do { \ |
| 61 | __ar->cmdbuf[2 * __nreg + 1] = cpu_to_le32(r); \ |
| 62 | __ar->cmdbuf[2 * __nreg + 2] = cpu_to_le32(v); \ |
| 63 | __nreg++; \ |
| 64 | if ((__nreg >= PAYLOAD_MAX/2)) { \ |
| 65 | if (IS_ACCEPTING_CMD(__ar)) \ |
| 66 | __err = ar->exec_cmd(__ar, AR9170_CMD_WREG, \ |
| 67 | 8 * __nreg, \ |
| 68 | (u8 *) &__ar->cmdbuf[1], \ |
| 69 | 0, NULL); \ |
| 70 | __nreg = 0; \ |
| 71 | if (__err) \ |
| 72 | goto __regwrite_out; \ |
| 73 | } \ |
| 74 | } while (0) |
| 75 | |
| 76 | #define ar9170_regwrite_finish() \ |
| 77 | __regwrite_out : \ |
| 78 | if (__nreg) { \ |
| 79 | if (IS_ACCEPTING_CMD(__ar)) \ |
| 80 | __err = ar->exec_cmd(__ar, AR9170_CMD_WREG, \ |
| 81 | 8 * __nreg, \ |
| 82 | (u8 *) &__ar->cmdbuf[1], \ |
| 83 | 0, NULL); \ |
| 84 | __nreg = 0; \ |
| 85 | } |
| 86 | |
| 87 | #define ar9170_regwrite_result() \ |
| 88 | __err; \ |
| 89 | } while (0); |
| 90 | |
| 91 | #endif /* __CMD_H */ |