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path: root/drivers/net/wireless/ar9170/cmd.c
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Diffstat (limited to 'drivers/net/wireless/ar9170/cmd.c')
-rw-r--r--drivers/net/wireless/ar9170/cmd.c129
1 files changed, 129 insertions, 0 deletions
diff --git a/drivers/net/wireless/ar9170/cmd.c b/drivers/net/wireless/ar9170/cmd.c
new file mode 100644
index 000000000000..f57a6200167b
--- /dev/null
+++ b/drivers/net/wireless/ar9170/cmd.c
@@ -0,0 +1,129 @@
+/*
+ * Atheros AR9170 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 "ar9170.h"
+#include "cmd.h"
+
+int ar9170_write_mem(struct ar9170 *ar, const __le32 *data, size_t len)
+{
+ int err;
+
+ if (unlikely(!IS_ACCEPTING_CMD(ar)))
+ return 0;
+
+ err = ar->exec_cmd(ar, AR9170_CMD_WMEM, len, (u8 *) data, 0, NULL);
+ if (err)
+ printk(KERN_DEBUG "%s: writing memory failed\n",
+ wiphy_name(ar->hw->wiphy));
+ return err;
+}
+
+int ar9170_write_reg(struct ar9170 *ar, const u32 reg, const u32 val)
+{
+ __le32 buf[2] = {
+ cpu_to_le32(reg),
+ cpu_to_le32(val),
+ };
+ int err;
+
+ if (unlikely(!IS_ACCEPTING_CMD(ar)))
+ return 0;
+
+ err = ar->exec_cmd(ar, AR9170_CMD_WREG, sizeof(buf),
+ (u8 *) buf, 0, NULL);
+ if (err)
+ printk(KERN_DEBUG "%s: writing reg %#x (val %#x) failed\n",
+ wiphy_name(ar->hw->wiphy), reg, val);
+ return err;
+}
+
+static int ar9170_read_mreg(struct ar9170 *ar, int nregs,
+ const u32 *regs, u32 *out)
+{
+ int i, err;
+ __le32 *offs, *res;
+
+ if (unlikely(!IS_ACCEPTING_CMD(ar)))
+ return 0;
+
+ /* 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 = ar->exec_cmd(ar, AR9170_CMD_RREG,
+ 4 * nregs, (u8 *)offs,
+ 4 * nregs, (u8 *)res);
+ if (err)
+ return err;
+
+ /* convert result to cpu endian */
+ for (i = 0; i < nregs; i++)
+ out[i] = le32_to_cpu(res[i]);
+
+ return 0;
+}
+
+int ar9170_read_reg(struct ar9170 *ar, u32 reg, u32 *val)
+{
+ return ar9170_read_mreg(ar, 1, &reg, val);
+}
+
+int ar9170_echo_test(struct ar9170 *ar, u32 v)
+{
+ __le32 echobuf = cpu_to_le32(v);
+ __le32 echores;
+ int err;
+
+ if (unlikely(!IS_ACCEPTING_CMD(ar)))
+ return -ENODEV;
+
+ err = ar->exec_cmd(ar, AR9170_CMD_ECHO,
+ 4, (u8 *)&echobuf,
+ 4, (u8 *)&echores);
+ if (err)
+ return err;
+
+ if (echobuf != echores)
+ return -EINVAL;
+
+ return 0;
+}