diff options
Diffstat (limited to 'drivers/net/wireless/ar9170/cmd.h')
| -rw-r--r-- | drivers/net/wireless/ar9170/cmd.h | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/drivers/net/wireless/ar9170/cmd.h b/drivers/net/wireless/ar9170/cmd.h new file mode 100644 index 00000000000..a4f0e50e52b --- /dev/null +++ b/drivers/net/wireless/ar9170/cmd.h @@ -0,0 +1,91 @@ +/* + * Atheros AR9170 driver + * + * Basic HW register/memory/command access functions + * + * Copyright 2008, Johannes Berg <johannes@sipsolutions.net> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; see the file COPYING. If not, see + * http://www.gnu.org/licenses/. + * + * This file incorporates work covered by the following copyright and + * permission notice: + * Copyright (c) 2007-2008 Atheros Communications, Inc. + * + * 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. + */ +#ifndef __CMD_H +#define __CMD_H + +#include "ar9170.h" + +/* basic HW access */ +int ar9170_write_mem(struct ar9170 *ar, const __le32 *data, size_t len); +int ar9170_write_reg(struct ar9170 *ar, const u32 reg, const u32 val); +int ar9170_read_reg(struct ar9170 *ar, u32 reg, u32 *val); +int ar9170_echo_test(struct ar9170 *ar, u32 v); + +/* + * Macros to facilitate writing multiple registers in a single + * write-combining USB command. Note that when the first group + * fails the whole thing will fail without any others attempted, + * but you won't know which write in the group failed. + */ +#define ar9170_regwrite_begin(ar) \ +do { \ + int __nreg = 0, __err = 0; \ + struct ar9170 *__ar = ar; + +#define ar9170_regwrite(r, v) do { \ + __ar->cmdbuf[2 * __nreg + 1] = cpu_to_le32(r); \ + __ar->cmdbuf[2 * __nreg + 2] = cpu_to_le32(v); \ + __nreg++; \ + if ((__nreg >= PAYLOAD_MAX/2)) { \ + if (IS_ACCEPTING_CMD(__ar)) \ + __err = ar->exec_cmd(__ar, AR9170_CMD_WREG, \ + 8 * __nreg, \ + (u8 *) &__ar->cmdbuf[1], \ + 0, NULL); \ + __nreg = 0; \ + if (__err) \ + goto __regwrite_out; \ + } \ +} while (0) + +#define ar9170_regwrite_finish() \ +__regwrite_out : \ + if (__nreg) { \ + if (IS_ACCEPTING_CMD(__ar)) \ + __err = ar->exec_cmd(__ar, AR9170_CMD_WREG, \ + 8 * __nreg, \ + (u8 *) &__ar->cmdbuf[1], \ + 0, NULL); \ + __nreg = 0; \ + } + +#define ar9170_regwrite_result() \ + __err; \ +} while (0); + +#endif /* __CMD_H */ |