/* * 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_collect_tally(struct ar9170 *ar); 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 */