Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 327 insertions, 0 deletions

diff --git a/kernel/drivers/net/wireless/zd1211rw/zd_mac.h b/kernel/drivers/net/wireless/zd1211rw/zd_mac.h
new file mode 100644
index 000000000..5a4842353
--- /dev/null
+++ b/kernel/drivers/net/wireless/zd1211rw/zd_mac.h
@@ -0,0 +1,327 @@
+/* ZD1211 USB-WLAN driver for Linux
+ *
+ * Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
+ * Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org>
+ *
+ * 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; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _ZD_MAC_H
+#define _ZD_MAC_H
+
+#include <linux/kernel.h>
+#include <net/mac80211.h>
+
+#include "zd_chip.h"
+
+struct zd_ctrlset {
+	u8     modulation;
+	__le16 tx_length;
+	u8     control;
+	/* stores only the difference to tx_length on ZD1211B */
+	__le16 packet_length;
+	__le16 current_length;
+	u8     service;
+	__le16  next_frame_length;
+} __packed;
+
+#define ZD_CS_RESERVED_SIZE	25
+
+/* The field modulation of struct zd_ctrlset controls the bit rate, the use
+ * of short or long preambles in 802.11b (CCK mode) or the use of 802.11a or
+ * 802.11g in OFDM mode.
+ *
+ * The term zd-rate is used for the combination of the modulation type flag
+ * and the "pure" rate value.
+ */
+#define ZD_PURE_RATE_MASK       0x0f
+#define ZD_MODULATION_TYPE_MASK 0x10
+#define ZD_RATE_MASK            (ZD_PURE_RATE_MASK|ZD_MODULATION_TYPE_MASK)
+#define ZD_PURE_RATE(modulation) ((modulation) & ZD_PURE_RATE_MASK)
+#define ZD_MODULATION_TYPE(modulation) ((modulation) & ZD_MODULATION_TYPE_MASK)
+#define ZD_RATE(modulation) ((modulation) & ZD_RATE_MASK)
+
+/* The two possible modulation types. Notify that 802.11b doesn't use the CCK
+ * codeing for the 1 and 2 MBit/s rate. We stay with the term here to remain
+ * consistent with uses the term at other places.
+ */
+#define ZD_CCK                  0x00
+#define ZD_OFDM                 0x10
+
+/* The ZD1211 firmware uses proprietary encodings of the 802.11b (CCK) rates.
+ * For OFDM the PLCP rate encodings are used. We combine these "pure" rates
+ * with the modulation type flag and call the resulting values zd-rates.
+ */
+#define ZD_CCK_RATE_1M          (ZD_CCK|0x00)
+#define ZD_CCK_RATE_2M          (ZD_CCK|0x01)
+#define ZD_CCK_RATE_5_5M        (ZD_CCK|0x02)
+#define ZD_CCK_RATE_11M         (ZD_CCK|0x03)
+#define ZD_OFDM_RATE_6M         (ZD_OFDM|ZD_OFDM_PLCP_RATE_6M)
+#define ZD_OFDM_RATE_9M         (ZD_OFDM|ZD_OFDM_PLCP_RATE_9M)
+#define ZD_OFDM_RATE_12M        (ZD_OFDM|ZD_OFDM_PLCP_RATE_12M)
+#define ZD_OFDM_RATE_18M        (ZD_OFDM|ZD_OFDM_PLCP_RATE_18M)
+#define ZD_OFDM_RATE_24M        (ZD_OFDM|ZD_OFDM_PLCP_RATE_24M)
+#define ZD_OFDM_RATE_36M        (ZD_OFDM|ZD_OFDM_PLCP_RATE_36M)
+#define ZD_OFDM_RATE_48M        (ZD_OFDM|ZD_OFDM_PLCP_RATE_48M)
+#define ZD_OFDM_RATE_54M        (ZD_OFDM|ZD_OFDM_PLCP_RATE_54M)
+
+/* The bit 5 of the zd_ctrlset modulation field controls the preamble in CCK
+ * mode or the 802.11a/802.11g selection in OFDM mode.
+ */
+#define ZD_CCK_PREA_LONG        0x00
+#define ZD_CCK_PREA_SHORT       0x20
+#define ZD_OFDM_MODE_11G        0x00
+#define ZD_OFDM_MODE_11A        0x20
+
+/* zd_ctrlset control field */
+#define ZD_CS_NEED_RANDOM_BACKOFF	0x01
+#define ZD_CS_NO_ACK			0x02
+
+#define ZD_CS_FRAME_TYPE_MASK		0x0c
+#define ZD_CS_DATA_FRAME		0x00
+#define ZD_CS_PS_POLL_FRAME		0x04
+#define ZD_CS_MANAGEMENT_FRAME		0x08
+#define ZD_CS_NO_SEQUENCE_CTL_FRAME	0x0c
+
+#define ZD_CS_WAKE_DESTINATION		0x10
+#define ZD_CS_RTS			0x20
+#define ZD_CS_ENCRYPT			0x40
+#define ZD_CS_SELF_CTS			0x80
+
+/* Incoming frames are prepended by a PLCP header */
+#define ZD_PLCP_HEADER_SIZE		5
+
+struct rx_length_info {
+	__le16 length[3];
+	__le16 tag;
+} __packed;
+
+#define RX_LENGTH_INFO_TAG		0x697e
+
+struct rx_status {
+	u8 signal_quality_cck;
+	/* rssi */
+	u8 signal_strength;
+	u8 signal_quality_ofdm;
+	u8 decryption_type;
+	u8 frame_status;
+} __packed;
+
+/* rx_status field decryption_type */
+#define ZD_RX_NO_WEP	0
+#define ZD_RX_WEP64	1
+#define ZD_RX_TKIP	2
+#define ZD_RX_AES	4
+#define ZD_RX_WEP128	5
+#define ZD_RX_WEP256	6
+
+/* rx_status field frame_status */
+#define ZD_RX_FRAME_MODULATION_MASK	0x01
+#define ZD_RX_CCK			0x00
+#define ZD_RX_OFDM			0x01
+
+#define ZD_RX_TIMEOUT_ERROR		0x02
+#define ZD_RX_FIFO_OVERRUN_ERROR	0x04
+#define ZD_RX_DECRYPTION_ERROR		0x08
+#define ZD_RX_CRC32_ERROR		0x10
+#define ZD_RX_NO_ADDR1_MATCH_ERROR	0x20
+#define ZD_RX_CRC16_ERROR		0x40
+#define ZD_RX_ERROR			0x80
+
+struct tx_retry_rate {
+	int count;	/* number of valid element in rate[] array */
+	int rate[10];	/* retry rates, described by an index in zd_rates[] */
+};
+
+struct tx_status {
+	u8 type;	/* must always be 0x01 : USB_INT_TYPE */
+	u8 id;		/* must always be 0xa0 : USB_INT_ID_RETRY_FAILED */
+	u8 rate;
+	u8 pad;
+	u8 mac[ETH_ALEN];
+	u8 retry;
+	u8 failure;
+} __packed;
+
+enum mac_flags {
+	MAC_FIXED_CHANNEL = 0x01,
+};
+
+struct housekeeping {
+	struct delayed_work link_led_work;
+};
+
+struct beacon {
+	struct delayed_work watchdog_work;
+	struct sk_buff *cur_beacon;
+	unsigned long last_update;
+	u16 interval;
+	u8 period;
+};
+
+enum zd_device_flags {
+	ZD_DEVICE_RUNNING,
+};
+
+#define ZD_MAC_STATS_BUFFER_SIZE 16
+
+#define ZD_MAC_MAX_ACK_WAITERS 50
+
+struct zd_mac {
+	struct zd_chip chip;
+	spinlock_t lock;
+	spinlock_t intr_lock;
+	struct ieee80211_hw *hw;
+	struct ieee80211_vif *vif;
+	struct housekeeping housekeeping;
+	struct beacon beacon;
+	struct work_struct set_rts_cts_work;
+	struct work_struct process_intr;
+	struct zd_mc_hash multicast_hash;
+	u8 intr_buffer[USB_MAX_EP_INT_BUFFER];
+	u8 regdomain;
+	u8 default_regdomain;
+	u8 channel;
+	int type;
+	int associated;
+	unsigned long flags;
+	struct sk_buff_head ack_wait_queue;
+	struct ieee80211_channel channels[14];
+	struct ieee80211_rate rates[12];
+	struct ieee80211_supported_band band;
+
+	/* Short preamble (used for RTS/CTS) */
+	unsigned int short_preamble:1;
+
+	/* whether to pass frames with CRC errors to stack */
+	unsigned int pass_failed_fcs:1;
+
+	/* whether to pass control frames to stack */
+	unsigned int pass_ctrl:1;
+
+	/* whether we have received a 802.11 ACK that is pending */
+	unsigned int ack_pending:1;
+
+	/* signal strength of the last 802.11 ACK received */
+	int ack_signal;
+};
+
+#define ZD_REGDOMAIN_FCC	0x10
+#define ZD_REGDOMAIN_IC		0x20
+#define ZD_REGDOMAIN_ETSI	0x30
+#define ZD_REGDOMAIN_SPAIN	0x31
+#define ZD_REGDOMAIN_FRANCE	0x32
+#define ZD_REGDOMAIN_JAPAN_2	0x40
+#define ZD_REGDOMAIN_JAPAN	0x41
+#define ZD_REGDOMAIN_JAPAN_3	0x49
+
+enum {
+	MIN_CHANNEL24 = 1,
+	MAX_CHANNEL24 = 14,
+};
+
+#define ZD_PLCP_SERVICE_LENGTH_EXTENSION 0x80
+
+struct ofdm_plcp_header {
+	u8 prefix[3];
+	__le16 service;
+} __packed;
+
+static inline u8 zd_ofdm_plcp_header_rate(const struct ofdm_plcp_header *header)
+{
+	return header->prefix[0] & 0xf;
+}
+
+/* The following defines give the encoding of the 4-bit rate field in the
+ * OFDM (802.11a/802.11g) PLCP header. Notify that these values are used to
+ * define the zd-rate values for OFDM.
+ *
+ * See the struct zd_ctrlset definition in zd_mac.h.
+ */
+#define ZD_OFDM_PLCP_RATE_6M	0xb
+#define ZD_OFDM_PLCP_RATE_9M	0xf
+#define ZD_OFDM_PLCP_RATE_12M	0xa
+#define ZD_OFDM_PLCP_RATE_18M	0xe
+#define ZD_OFDM_PLCP_RATE_24M	0x9
+#define ZD_OFDM_PLCP_RATE_36M	0xd
+#define ZD_OFDM_PLCP_RATE_48M	0x8
+#define ZD_OFDM_PLCP_RATE_54M	0xc
+
+struct cck_plcp_header {
+	u8 signal;
+	u8 service;
+	__le16 length;
+	__le16 crc16;
+} __packed;
+
+static inline u8 zd_cck_plcp_header_signal(const struct cck_plcp_header *header)
+{
+	return header->signal;
+}
+
+/* These defines give the encodings of the signal field in the 802.11b PLCP
+ * header. The signal field gives the bit rate of the following packet. Even
+ * if technically wrong we use CCK here also for the 1 MBit/s and 2 MBit/s
+ * rate to stay consistent with Zydas and our use of the term.
+ *
+ * Notify that these values are *not* used in the zd-rates.
+ */
+#define ZD_CCK_PLCP_SIGNAL_1M	0x0a
+#define ZD_CCK_PLCP_SIGNAL_2M	0x14
+#define ZD_CCK_PLCP_SIGNAL_5M5	0x37
+#define ZD_CCK_PLCP_SIGNAL_11M	0x6e
+
+static inline struct zd_mac *zd_hw_mac(struct ieee80211_hw *hw)
+{
+	return hw->priv;
+}
+
+static inline struct zd_mac *zd_chip_to_mac(struct zd_chip *chip)
+{
+	return container_of(chip, struct zd_mac, chip);
+}
+
+static inline struct zd_mac *zd_usb_to_mac(struct zd_usb *usb)
+{
+	return zd_chip_to_mac(zd_usb_to_chip(usb));
+}
+
+static inline u8 *zd_mac_get_perm_addr(struct zd_mac *mac)
+{
+	return mac->hw->wiphy->perm_addr;
+}
+
+#define zd_mac_dev(mac) (zd_chip_dev(&(mac)->chip))
+
+struct ieee80211_hw *zd_mac_alloc_hw(struct usb_interface *intf);
+void zd_mac_clear(struct zd_mac *mac);
+
+int zd_mac_preinit_hw(struct ieee80211_hw *hw);
+int zd_mac_init_hw(struct ieee80211_hw *hw);
+
+int zd_mac_rx(struct ieee80211_hw *hw, const u8 *buffer, unsigned int length);
+void zd_mac_tx_failed(struct urb *urb);
+void zd_mac_tx_to_dev(struct sk_buff *skb, int error);
+
+int zd_op_start(struct ieee80211_hw *hw);
+void zd_op_stop(struct ieee80211_hw *hw);
+int zd_restore_settings(struct zd_mac *mac);
+
+#ifdef DEBUG
+void zd_dump_rx_status(const struct rx_status *status);
+#else
+#define zd_dump_rx_status(status)
+#endif /* DEBUG */
+
+#endif /* _ZD_MAC_H */