carl9170: mac80211 glue and command interface

Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath/carl9170/cmd.c

@@ -0,0 +1,188 @@
+/*
+ * Atheros CARL9170 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.
+ */
+
+#include "carl9170.h"
+#include "cmd.h"
+
+int carl9170_write_reg(struct ar9170 *ar, const u32 reg, const u32 val)
+{
+	__le32 buf[2] = {
+		cpu_to_le32(reg),
+		cpu_to_le32(val),
+	};
+	int err;
+
+	err = carl9170_exec_cmd(ar, CARL9170_CMD_WREG, sizeof(buf),
+				(u8 *) buf, 0, NULL);
+	if (err) {
+		if (net_ratelimit()) {
+			wiphy_err(ar->hw->wiphy, "writing reg %#x "
+				"(val %#x) failed (%d)\n", reg, val, err);
+		}
+	}
+	return err;
+}
+
+int carl9170_read_mreg(struct ar9170 *ar, const int nregs,
+		       const u32 *regs, u32 *out)
+{
+	int i, err;
+	__le32 *offs, *res;
+
+	/* abuse "out" for the register offsets, must be same length */
+	offs = (__le32 *)out;
+	for (i = 0; i < nregs; i++)
+		offs[i] = cpu_to_le32(regs[i]);
+
+	/* also use the same buffer for the input */
+	res = (__le32 *)out;
+
+	err = carl9170_exec_cmd(ar, CARL9170_CMD_RREG,
+				4 * nregs, (u8 *)offs,
+				4 * nregs, (u8 *)res);
+	if (err) {
+		if (net_ratelimit()) {
+			wiphy_err(ar->hw->wiphy, "reading regs failed (%d)\n",
+				  err);
+		}
+		return err;
+	}
+
+	/* convert result to cpu endian */
+	for (i = 0; i < nregs; i++)
+		out[i] = le32_to_cpu(res[i]);
+
+	return 0;
+}
+
+int carl9170_read_reg(struct ar9170 *ar, u32 reg, u32 *val)
+{
+	return carl9170_read_mreg(ar, 1, &reg, val);
+}
+
+int carl9170_echo_test(struct ar9170 *ar, const u32 v)
+{
+	u32 echores;
+	int err;
+
+	err = carl9170_exec_cmd(ar, CARL9170_CMD_ECHO,
+				4, (u8 *)&v,
+				4, (u8 *)&echores);
+	if (err)
+		return err;
+
+	if (v != echores) {
+		wiphy_info(ar->hw->wiphy, "wrong echo %x != %x", v, echores);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+struct carl9170_cmd *carl9170_cmd_buf(struct ar9170 *ar,
+	const enum carl9170_cmd_oids cmd, const unsigned int len)
+{
+	struct carl9170_cmd *tmp;
+
+	tmp = kzalloc(sizeof(struct carl9170_cmd_head) + len, GFP_ATOMIC);
+	if (tmp) {
+		tmp->hdr.cmd = cmd;
+		tmp->hdr.len = len;
+	}
+
+	return tmp;
+}
+
+int carl9170_reboot(struct ar9170 *ar)
+{
+	struct carl9170_cmd *cmd;
+	int err;
+
+	cmd = carl9170_cmd_buf(ar, CARL9170_CMD_REBOOT_ASYNC, 0);
+	if (!cmd)
+		return -ENOMEM;
+
+	err = __carl9170_exec_cmd(ar, (struct carl9170_cmd *)cmd, true);
+	return err;
+}
+
+int carl9170_mac_reset(struct ar9170 *ar)
+{
+	return carl9170_exec_cmd(ar, CARL9170_CMD_SWRST,
+				 0, NULL, 0, NULL);
+}
+
+int carl9170_bcn_ctrl(struct ar9170 *ar, const unsigned int vif_id,
+		       const u32 mode, const u32 addr, const u32 len)
+{
+	struct carl9170_cmd *cmd;
+
+	cmd = carl9170_cmd_buf(ar, CARL9170_CMD_BCN_CTRL_ASYNC,
+			       sizeof(struct carl9170_bcn_ctrl_cmd));
+	if (!cmd)
+		return -ENOMEM;
+
+	cmd->bcn_ctrl.vif_id = cpu_to_le32(vif_id);
+	cmd->bcn_ctrl.mode = cpu_to_le32(mode);
+	cmd->bcn_ctrl.bcn_addr = cpu_to_le32(addr);
+	cmd->bcn_ctrl.bcn_len = cpu_to_le32(len);
+
+	return __carl9170_exec_cmd(ar, cmd, true);
+}
+
+int carl9170_powersave(struct ar9170 *ar, const bool ps)
+{
+	struct carl9170_cmd *cmd;
+	u32 state;
+
+	cmd = carl9170_cmd_buf(ar, CARL9170_CMD_PSM_ASYNC,
+			       sizeof(struct carl9170_psm));
+	if (!cmd)
+		return -ENOMEM;
+
+	if (ps) {
+		/* Sleep until next TBTT */
+		state = CARL9170_PSM_SLEEP | 1;
+	} else {
+		/* wake up immediately */
+		state = 1;
+	}
+
+	cmd->psm.state = cpu_to_le32(state);
+	return __carl9170_exec_cmd(ar, cmd, true);
+}