wl1251: move to it's own directory

wl1271 driver is under heavy development but on the other hand the older
wl1251 driver is currently considered more as a legacy driver. To make it
easier to develop wl1271 features move wl1251 to it's own directory,
drivers/net/wireless/wl1251.

There are no functional changes, only moving of files. One regression
is that Kconfig won't be updated automatically and user needs to enable
wl1251 manually with an older config file.

Signed-off-by: Kalle Valo <kvalo@adurom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 122 insertions, 0 deletions

diff --git a/drivers/net/wireless/wl1251/rx.h b/drivers/net/wireless/wl1251/rx.h
new file mode 100644
index 00000000000..4448f635a4d
--- /dev/null
+++ b/drivers/net/wireless/wl1251/rx.h
@@ -0,0 +1,122 @@
+/*
+ * This file is part of wl1251
+ *
+ * Copyright (c) 1998-2007 Texas Instruments Incorporated
+ * Copyright (C) 2008 Nokia Corporation
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * 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; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#ifndef __WL1251_RX_H__
+#define __WL1251_RX_H__
+
+#include <linux/bitops.h>
+
+#include "wl1251.h"
+
+/*
+ * RX PATH
+ *
+ * The Rx path uses a double buffer and an rx_contro structure, each located
+ * at a fixed address in the device memory. The host keeps track of which
+ * buffer is available and alternates between them on a per packet basis.
+ * The size of each of the two buffers is large enough to hold the longest
+ * 802.3 packet.
+ * The RX path goes like that:
+ * 1) The target generates an interrupt each time a new packet is received.
+ *   There are 2 RX interrupts, one for each buffer.
+ * 2) The host reads the received packet from one of the double buffers.
+ * 3) The host triggers a target interrupt.
+ * 4) The target prepares the next RX packet.
+ */
+
+#define WL1251_RX_MAX_RSSI -30
+#define WL1251_RX_MIN_RSSI -95
+
+#define WL1251_RX_ALIGN_TO 4
+#define WL1251_RX_ALIGN(len) (((len) + WL1251_RX_ALIGN_TO - 1) & \
+			     ~(WL1251_RX_ALIGN_TO - 1))
+
+#define SHORT_PREAMBLE_BIT   BIT(0)
+#define OFDM_RATE_BIT        BIT(6)
+#define PBCC_RATE_BIT        BIT(7)
+
+#define PLCP_HEADER_LENGTH 8
+#define RX_DESC_PACKETID_SHIFT 11
+#define RX_MAX_PACKET_ID 3
+
+#define RX_DESC_VALID_FCS         0x0001
+#define RX_DESC_MATCH_RXADDR1     0x0002
+#define RX_DESC_MCAST             0x0004
+#define RX_DESC_STAINTIM          0x0008
+#define RX_DESC_VIRTUAL_BM        0x0010
+#define RX_DESC_BCAST             0x0020
+#define RX_DESC_MATCH_SSID        0x0040
+#define RX_DESC_MATCH_BSSID       0x0080
+#define RX_DESC_ENCRYPTION_MASK   0x0300
+#define RX_DESC_MEASURMENT        0x0400
+#define RX_DESC_SEQNUM_MASK       0x1800
+#define	RX_DESC_MIC_FAIL	  0x2000
+#define	RX_DESC_DECRYPT_FAIL	  0x4000
+
+struct wl1251_rx_descriptor {
+	u32 timestamp; /* In microseconds */
+	u16 length; /* Paylod length, including headers */
+	u16 flags;
+
+	/*
+	 * 0 - 802.11
+	 * 1 - 802.3
+	 * 2 - IP
+	 * 3 - Raw Codec
+	 */
+	u8 type;
+
+	/*
+	 * Received Rate:
+	 * 0x0A - 1MBPS
+	 * 0x14 - 2MBPS
+	 * 0x37 - 5_5MBPS
+	 * 0x0B - 6MBPS
+	 * 0x0F - 9MBPS
+	 * 0x6E - 11MBPS
+	 * 0x0A - 12MBPS
+	 * 0x0E - 18MBPS
+	 * 0xDC - 22MBPS
+	 * 0x09 - 24MBPS
+	 * 0x0D - 36MBPS
+	 * 0x08 - 48MBPS
+	 * 0x0C - 54MBPS
+	 */
+	u8 rate;
+
+	u8 mod_pre; /* Modulation and preamble */
+	u8 channel;
+
+	/*
+	 * 0 - 2.4 Ghz
+	 * 1 - 5 Ghz
+	 */
+	u8 band;
+
+	s8 rssi; /* in dB */
+	u8 rcpi; /* in dB */
+	u8 snr; /* in dB */
+} __packed;
+
+void wl1251_rx(struct wl1251 *wl);
+
+#endif