projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| e9348cdd CL |
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); | |
| 181af387 | 47 | int ar9170_read_mreg(struct ar9170 *ar, int nregs, const u32 *regs, u32 *out); |
| e9348cdd CL |
48 | int ar9170_echo_test(struct ar9170 *ar, u32 v); |
| 49 | ||
| 50 | /* | |
| 51 | * Macros to facilitate writing multiple registers in a single | |
| 52 | * write-combining USB command. Note that when the first group | |
| 53 | * fails the whole thing will fail without any others attempted, | |
| 54 | * but you won't know which write in the group failed. | |
| 55 | */ | |
| 56 | #define ar9170_regwrite_begin(ar) \ | |
| 57 | do { \ | |
| 58 | int __nreg = 0, __err = 0; \ | |
| 59 | struct ar9170 *__ar = ar; | |
| 60 | ||
| 61 | #define ar9170_regwrite(r, v) do { \ | |
| 62 | __ar->cmdbuf[2 * __nreg + 1] = cpu_to_le32(r); \ | |
| 63 | __ar->cmdbuf[2 * __nreg + 2] = cpu_to_le32(v); \ | |
| 64 | __nreg++; \ | |
| 65 | if ((__nreg >= PAYLOAD_MAX/2)) { \ | |
| 66 | if (IS_ACCEPTING_CMD(__ar)) \ | |
| 67 | __err = ar->exec_cmd(__ar, AR9170_CMD_WREG, \ | |
| 68 | 8 * __nreg, \ | |
| 69 | (u8 *) &__ar->cmdbuf[1], \ | |
| 70 | 0, NULL); \ | |
| 71 | __nreg = 0; \ | |
| 72 | if (__err) \ | |
| 73 | goto __regwrite_out; \ | |
| 74 | } \ | |
| 75 | } while (0) | |
| 76 | ||
| 77 | #define ar9170_regwrite_finish() \ | |
| 78 | __regwrite_out : \ | |
| 79 | if (__nreg) { \ | |
| 80 | if (IS_ACCEPTING_CMD(__ar)) \ | |
| 81 | __err = ar->exec_cmd(__ar, AR9170_CMD_WREG, \ | |
| 82 | 8 * __nreg, \ | |
| 83 | (u8 *) &__ar->cmdbuf[1], \ | |
| 84 | 0, NULL); \ | |
| 85 | __nreg = 0; \ | |
| 86 | } | |
| 87 | ||
| 88 | #define ar9170_regwrite_result() \ | |
| 89 | __err; \ | |
| 90 | } while (0); | |
| 91 | ||
| 92 | #endif /* __CMD_H */ |