wl1271: add wl1271 driver files

This driver supports the wl1271 chipset from Texas Instruments based on the
WiLink(tm) 6.0 mobile platform.  Support for wl1273 should be relatively easy
to add.  This chipset is designed for embedded devices, with good powersaving
capabilities.  The wl1271 chipset is the successor of wl1251 and supports the
802.11b/g/n standards, but currently this driver supports only b/g.

More information about this chipset can be found here:
http://focus.ti.com/general/docs/wtbu/wtbuproductcontent.tsp?templateId=6123&navigationId=12762&contentId=29993

Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 121 insertions, 0 deletions

diff --git a/drivers/net/wireless/wl12xx/wl1271_rx.h b/drivers/net/wireless/wl12xx/wl1271_rx.h
new file mode 100644
index 00000000000..d1ca60e43a2
--- /dev/null
+++ b/drivers/net/wireless/wl12xx/wl1271_rx.h
@@ -0,0 +1,121 @@
+/*
+ * This file is part of wl1271
+ *
+ * Copyright (C) 1998-2009 Texas Instruments. All rights reserved.
+ * Copyright (C) 2008-2009 Nokia Corporation
+ *
+ * Contact: Luciano Coelho <luciano.coelho@nokia.com>
+ *
+ * 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 __WL1271_RX_H__
+#define __WL1271_RX_H__
+
+#include <linux/bitops.h>
+
+#define WL1271_RX_MAX_RSSI -30
+#define WL1271_RX_MIN_RSSI -95
+
+#define WL1271_RX_ALIGN_TO 4
+#define WL1271_RX_ALIGN(len) (((len) + WL1271_RX_ALIGN_TO - 1) & \
+			     ~(WL1271_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 NUM_RX_PKT_DESC_MOD_MASK   7
+#define WL1271_RX_RATE_UNSUPPORTED 0xFF
+
+#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
+
+/*
+ * RX Descriptor flags:
+ *
+ * Bits 0-1 - band
+ * Bit  2   - STBC
+ * Bit  3   - A-MPDU
+ * Bit  4   - HT
+ * Bits 5-7 - encryption
+ */
+#define WL1271_RX_DESC_BAND_MASK    0x03
+#define WL1271_RX_DESC_ENCRYPT_MASK 0xE0
+
+#define WL1271_RX_DESC_BAND_BG      0x00
+#define WL1271_RX_DESC_BAND_J       0x01
+#define WL1271_RX_DESC_BAND_A       0x02
+
+#define WL1271_RX_DESC_STBC         BIT(2)
+#define WL1271_RX_DESC_A_MPDU       BIT(3)
+#define WL1271_RX_DESC_HT           BIT(4)
+
+#define WL1271_RX_DESC_ENCRYPT_WEP  0x20
+#define WL1271_RX_DESC_ENCRYPT_TKIP 0x40
+#define WL1271_RX_DESC_ENCRYPT_AES  0x60
+#define WL1271_RX_DESC_ENCRYPT_GEM  0x80
+
+/*
+ * RX Descriptor status
+ *
+ * Bits 0-2 - status
+ * Bits 3-7 - reserved
+ */
+#define WL1271_RX_DESC_STATUS_MASK      0x07
+
+#define WL1271_RX_DESC_SUCCESS          0x00
+#define WL1271_RX_DESC_DECRYPT_FAIL     0x01
+#define WL1271_RX_DESC_MIC_FAIL         0x02
+#define WL1271_RX_DESC_DRIVER_RX_Q_FAIL 0x03
+
+#define RX_MEM_BLOCK_MASK     0xFF
+#define RX_BUF_SIZE_MASK      0xFFF00
+#define RX_BUF_SIZE_SHIFT_DIV 6
+
+struct wl1271_rx_descriptor {
+	u16 length;
+	u8  status;
+	u8  flags;
+	u8  rate;
+	u8  channel;
+	s8  rssi;
+	u8  snr;
+	u32 timestamp;
+	u8  packet_class;
+	u8  process_id;
+	u8  pad_len;
+	u8  reserved;
+} __attribute__ ((packed));
+
+void wl1271_rx(struct wl1271 *wl, struct wl1271_fw_status *status);
+
+#endif