| /* |
| * Atheros CARL9170 driver |
| * |
| * Basic HW register/memory/command access functions |
| * |
| * Copyright 2008, Johannes Berg <johannes@sipsolutions.net> |
| * Copyright 2010, Christian Lamparter <chunkeey@googlemail.com> |
| * |
| * 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 "carl9170.h" |
| |
| /* basic HW access */ |
| int carl9170_write_reg(struct ar9170 *ar, const u32 reg, const u32 val); |
| int carl9170_read_reg(struct ar9170 *ar, const u32 reg, u32 *val); |
| int carl9170_read_mreg(struct ar9170 *ar, const int nregs, |
| const u32 *regs, u32 *out); |
| int carl9170_echo_test(struct ar9170 *ar, u32 v); |
| int carl9170_reboot(struct ar9170 *ar); |
| int carl9170_mac_reset(struct ar9170 *ar); |
| int carl9170_powersave(struct ar9170 *ar, const bool power_on); |
| int carl9170_bcn_ctrl(struct ar9170 *ar, const unsigned int vif_id, |
| const u32 mode, const u32 addr, const u32 len); |
| |
| static inline int carl9170_flush_cab(struct ar9170 *ar, |
| const unsigned int vif_id) |
| { |
| return carl9170_bcn_ctrl(ar, vif_id, CARL9170_BCN_CTRL_DRAIN, 0, 0); |
| } |
| |
| static inline int carl9170_rx_filter(struct ar9170 *ar, |
| const unsigned int _rx_filter) |
| { |
| __le32 rx_filter = cpu_to_le32(_rx_filter); |
| |
| return carl9170_exec_cmd(ar, CARL9170_CMD_RX_FILTER, |
| sizeof(rx_filter), (u8 *)&rx_filter, |
| 0, NULL); |
| } |
| |
| struct carl9170_cmd *carl9170_cmd_buf(struct ar9170 *ar, |
| const enum carl9170_cmd_oids cmd, const unsigned int len); |
| |
| /* |
| * 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 carl9170_regwrite_begin(ar) \ |
| do { \ |
| int __nreg = 0, __err = 0; \ |
| struct ar9170 *__ar = ar; |
| |
| #define carl9170_regwrite(r, v) do { \ |
| __ar->cmd_buf[2 * __nreg + 1] = cpu_to_le32(r); \ |
| __ar->cmd_buf[2 * __nreg + 2] = cpu_to_le32(v); \ |
| __nreg++; \ |
| if ((__nreg >= PAYLOAD_MAX / 2)) { \ |
| if (IS_ACCEPTING_CMD(__ar)) \ |
| __err = carl9170_exec_cmd(__ar, \ |
| CARL9170_CMD_WREG, 8 * __nreg, \ |
| (u8 *) &__ar->cmd_buf[1], 0, NULL); \ |
| else \ |
| goto __regwrite_out; \ |
| \ |
| __nreg = 0; \ |
| if (__err) \ |
| goto __regwrite_out; \ |
| } \ |
| } while (0) |
| |
| #define carl9170_regwrite_finish() \ |
| __regwrite_out : \ |
| if (__err == 0 && __nreg) { \ |
| if (IS_ACCEPTING_CMD(__ar)) \ |
| __err = carl9170_exec_cmd(__ar, \ |
| CARL9170_CMD_WREG, 8 * __nreg, \ |
| (u8 *) &__ar->cmd_buf[1], 0, NULL); \ |
| __nreg = 0; \ |
| } |
| |
| #define carl9170_regwrite_result() \ |
| __err; \ |
| } while (0); |
| |
| |
| #define carl9170_async_regwrite_get_buf() \ |
| do { \ |
| __nreg = 0; \ |
| __cmd = carl9170_cmd_buf(__carl, CARL9170_CMD_WREG_ASYNC, \ |
| CARL9170_MAX_CMD_PAYLOAD_LEN); \ |
| if (__cmd == NULL) { \ |
| __err = -ENOMEM; \ |
| goto __async_regwrite_out; \ |
| } \ |
| } while (0); |
| |
| #define carl9170_async_regwrite_begin(carl) \ |
| do { \ |
| struct ar9170 *__carl = carl; \ |
| struct carl9170_cmd *__cmd; \ |
| unsigned int __nreg; \ |
| int __err = 0; \ |
| carl9170_async_regwrite_get_buf(); \ |
| |
| #define carl9170_async_regwrite_flush() \ |
| do { \ |
| if (__cmd == NULL || __nreg == 0) \ |
| break; \ |
| \ |
| if (IS_ACCEPTING_CMD(__carl) && __nreg) { \ |
| __cmd->hdr.len = 8 * __nreg; \ |
| __err = __carl9170_exec_cmd(__carl, __cmd, true); \ |
| __cmd = NULL; \ |
| break; \ |
| } \ |
| goto __async_regwrite_out; \ |
| } while (0) |
| |
| #define carl9170_async_regwrite(r, v) do { \ |
| if (__cmd == NULL) \ |
| carl9170_async_regwrite_get_buf(); \ |
| __cmd->wreg.regs[__nreg].addr = cpu_to_le32(r); \ |
| __cmd->wreg.regs[__nreg].val = cpu_to_le32(v); \ |
| __nreg++; \ |
| if ((__nreg >= PAYLOAD_MAX / 2)) \ |
| carl9170_async_regwrite_flush(); \ |
| } while (0) |
| |
| #define carl9170_async_regwrite_finish() do { \ |
| __async_regwrite_out: \ |
| if (__cmd != NULL && __err == 0) \ |
| carl9170_async_regwrite_flush(); \ |
| kfree(__cmd); \ |
| } while (0) \ |
| |
| #define carl9170_async_regwrite_result() \ |
| __err; \ |
| } while (0); |
| |
| #endif /* __CMD_H */ |