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174 lines
5.7 KiB
174 lines
5.7 KiB
/* |
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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 <[email protected]> |
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* Copyright 2010, Christian Lamparter <[email protected]> |
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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_collect_tally(struct ar9170 *ar); |
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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_regwrite_get_buf() \ |
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do { \ |
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__nreg = 0; \ |
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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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struct ar9170 *__carl = carl; \ |
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struct carl9170_cmd *__cmd; \ |
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unsigned int __nreg; \ |
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int __err = 0; \ |
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carl9170_async_regwrite_get_buf(); \ |
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#define carl9170_async_regwrite_flush() \ |
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do { \ |
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if (__cmd == NULL || __nreg == 0) \ |
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break; \ |
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\ |
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if (IS_ACCEPTING_CMD(__carl) && __nreg) { \ |
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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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break; \ |
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} \ |
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goto __async_regwrite_out; \ |
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} while (0) |
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#define carl9170_async_regwrite(r, v) do { \ |
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if (__cmd == NULL) \ |
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carl9170_async_regwrite_get_buf(); \ |
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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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carl9170_async_regwrite_flush(); \ |
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} while (0) |
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#define carl9170_async_regwrite_finish() do { \ |
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__async_regwrite_out: \ |
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if (__cmd != NULL && __err == 0) \ |
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carl9170_async_regwrite_flush(); \ |
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kfree(__cmd); \ |
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} while (0) \ |
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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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