forked from Minki/linux
5c89569194
The hardware rx-filter was essentially disabled, because of a serve, yet unidentifiable problem with iwlagn. Due to these circumstances the driver and mac80211 were left with the job of filtering. This is very unfortunate and has proven to be expensive in terms of latency, memory and load. Therefore the new 1.8.8.3 firmware introduces a flexible filtering infrastructure which allows the driver to offload some of the checks (FCS & PLCP crc check, RA match, control frame filter, etc...) whenever possible. Note: This patch also includes all changes to the shared headers files since the inclusion. Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
169 lines
5.5 KiB
C
169 lines
5.5 KiB
C
/*
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* Atheros CARL9170 driver
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*
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* Basic HW register/memory/command access functions
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*
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* Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
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* Copyright 2010, Christian Lamparter <chunkeey@googlemail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, see
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* http://www.gnu.org/licenses/.
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*
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* This file incorporates work covered by the following copyright and
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* permission notice:
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* Copyright (c) 2007-2008 Atheros Communications, Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef __CMD_H
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#define __CMD_H
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#include "carl9170.h"
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/* basic HW access */
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int carl9170_write_reg(struct ar9170 *ar, const u32 reg, const u32 val);
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int carl9170_read_reg(struct ar9170 *ar, const u32 reg, u32 *val);
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int carl9170_read_mreg(struct ar9170 *ar, const int nregs,
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const u32 *regs, u32 *out);
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int carl9170_echo_test(struct ar9170 *ar, u32 v);
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int carl9170_reboot(struct ar9170 *ar);
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int carl9170_mac_reset(struct ar9170 *ar);
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int carl9170_powersave(struct ar9170 *ar, const bool power_on);
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int carl9170_bcn_ctrl(struct ar9170 *ar, const unsigned int vif_id,
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const u32 mode, const u32 addr, const u32 len);
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static inline int carl9170_flush_cab(struct ar9170 *ar,
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const unsigned int vif_id)
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{
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return carl9170_bcn_ctrl(ar, vif_id, CARL9170_BCN_CTRL_DRAIN, 0, 0);
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}
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static inline int carl9170_rx_filter(struct ar9170 *ar,
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const unsigned int _rx_filter)
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{
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__le32 rx_filter = cpu_to_le32(_rx_filter);
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return carl9170_exec_cmd(ar, CARL9170_CMD_RX_FILTER,
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sizeof(rx_filter), (u8 *)&rx_filter,
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0, NULL);
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}
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struct carl9170_cmd *carl9170_cmd_buf(struct ar9170 *ar,
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const enum carl9170_cmd_oids cmd, const unsigned int len);
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/*
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* Macros to facilitate writing multiple registers in a single
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* write-combining USB command. Note that when the first group
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* fails the whole thing will fail without any others attempted,
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* but you won't know which write in the group failed.
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*/
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#define carl9170_regwrite_begin(ar) \
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do { \
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int __nreg = 0, __err = 0; \
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struct ar9170 *__ar = ar;
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#define carl9170_regwrite(r, v) do { \
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__ar->cmd_buf[2 * __nreg + 1] = cpu_to_le32(r); \
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__ar->cmd_buf[2 * __nreg + 2] = cpu_to_le32(v); \
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__nreg++; \
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if ((__nreg >= PAYLOAD_MAX/2)) { \
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if (IS_ACCEPTING_CMD(__ar)) \
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__err = carl9170_exec_cmd(__ar, \
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CARL9170_CMD_WREG, 8 * __nreg, \
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(u8 *) &__ar->cmd_buf[1], 0, NULL); \
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else \
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goto __regwrite_out; \
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\
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__nreg = 0; \
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if (__err) \
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goto __regwrite_out; \
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} \
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} while (0)
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#define carl9170_regwrite_finish() \
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__regwrite_out : \
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if (__err == 0 && __nreg) { \
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if (IS_ACCEPTING_CMD(__ar)) \
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__err = carl9170_exec_cmd(__ar, \
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CARL9170_CMD_WREG, 8 * __nreg, \
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(u8 *) &__ar->cmd_buf[1], 0, NULL); \
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__nreg = 0; \
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}
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#define carl9170_regwrite_result() \
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__err; \
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} while (0);
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#define carl9170_async_get_buf() \
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do { \
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__cmd = carl9170_cmd_buf(__carl, CARL9170_CMD_WREG_ASYNC, \
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CARL9170_MAX_CMD_PAYLOAD_LEN); \
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if (__cmd == NULL) { \
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__err = -ENOMEM; \
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goto __async_regwrite_out; \
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} \
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} while (0);
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#define carl9170_async_regwrite_begin(carl) \
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do { \
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int __nreg = 0, __err = 0; \
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struct ar9170 *__carl = carl; \
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struct carl9170_cmd *__cmd; \
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carl9170_async_get_buf(); \
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#define carl9170_async_regwrite(r, v) do { \
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__cmd->wreg.regs[__nreg].addr = cpu_to_le32(r); \
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__cmd->wreg.regs[__nreg].val = cpu_to_le32(v); \
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__nreg++; \
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if ((__nreg >= PAYLOAD_MAX/2)) { \
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if (IS_ACCEPTING_CMD(__carl)) { \
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__cmd->hdr.len = 8 * __nreg; \
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__err = __carl9170_exec_cmd(__carl, __cmd, true);\
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__cmd = NULL; \
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carl9170_async_get_buf(); \
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} else { \
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goto __async_regwrite_out; \
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} \
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__nreg = 0; \
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if (__err) \
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goto __async_regwrite_out; \
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} \
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} while (0)
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#define carl9170_async_regwrite_finish() \
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__async_regwrite_out : \
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if (__err == 0 && __nreg) { \
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__cmd->hdr.len = 8 * __nreg; \
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if (IS_ACCEPTING_CMD(__carl)) \
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__err = __carl9170_exec_cmd(__carl, __cmd, true);\
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__nreg = 0; \
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}
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#define carl9170_async_regwrite_result() \
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__err; \
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} while (0);
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#endif /* __CMD_H */
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