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diff --git a/drivers/net/wireless/iwlwifi/iwl-trans.h b/drivers/net/wireless/iwlwifi/iwl-trans.h
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+/******************************************************************************
+ *
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2007 - 2014 Intel Corporation. All rights reserved.
+ * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License 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 Street, Fifth Floor, Boston, MA 02110,
+ * USA
+ *
+ * The full GNU General Public License is included in this distribution
+ * in the file called COPYING.
+ *
+ * Contact Information:
+ *  Intel Linux Wireless <ilw@linux.intel.com>
+ * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2005 - 2014 Intel Corporation. All rights reserved.
+ * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *  * Neither the name Intel Corporation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *****************************************************************************/
+#ifndef __iwl_trans_h__
+#define __iwl_trans_h__
+
+#include <linux/ieee80211.h>
+#include <linux/mm.h> /* for page_address */
+#include <linux/lockdep.h>
+
+#include "iwl-debug.h"
+#include "iwl-config.h"
+#include "iwl-fw.h"
+#include "iwl-op-mode.h"
+
+/**
+ * DOC: Transport layer - what is it ?
+ *
+ * The transport layer is the layer that deals with the HW directly. It provides
+ * an abstraction of the underlying HW to the upper layer. The transport layer
+ * doesn't provide any policy, algorithm or anything of this kind, but only
+ * mechanisms to make the HW do something. It is not completely stateless but
+ * close to it.
+ * We will have an implementation for each different supported bus.
+ */
+
+/**
+ * DOC: Life cycle of the transport layer
+ *
+ * The transport layer has a very precise life cycle.
+ *
+ *	1) A helper function is called during the module initialization and
+ *	   registers the bus driver's ops with the transport's alloc function.
+ *	2) Bus's probe calls to the transport layer's allocation functions.
+ *	   Of course this function is bus specific.
+ *	3) This allocation functions will spawn the upper layer which will
+ *	   register mac80211.
+ *
+ *	4) At some point (i.e. mac80211's start call), the op_mode will call
+ *	   the following sequence:
+ *	   start_hw
+ *	   start_fw
+ *
+ *	5) Then when finished (or reset):
+ *	   stop_device
+ *
+ *	6) Eventually, the free function will be called.
+ */
+
+/**
+ * DOC: Host command section
+ *
+ * A host command is a command issued by the upper layer to the fw. There are
+ * several versions of fw that have several APIs. The transport layer is
+ * completely agnostic to these differences.
+ * The transport does provide helper functionality (i.e. SYNC / ASYNC mode),
+ */
+#define SEQ_TO_QUEUE(s)	(((s) >> 8) & 0x1f)
+#define QUEUE_TO_SEQ(q)	(((q) & 0x1f) << 8)
+#define SEQ_TO_INDEX(s)	((s) & 0xff)
+#define INDEX_TO_SEQ(i)	((i) & 0xff)
+#define SEQ_RX_FRAME	cpu_to_le16(0x8000)
+
+/**
+ * struct iwl_cmd_header
+ *
+ * This header format appears in the beginning of each command sent from the
+ * driver, and each response/notification received from uCode.
+ */
+struct iwl_cmd_header {
+	u8 cmd;		/* Command ID:  REPLY_RXON, etc. */
+	u8 flags;	/* 0:5 reserved, 6 abort, 7 internal */
+	/*
+	 * The driver sets up the sequence number to values of its choosing.
+	 * uCode does not use this value, but passes it back to the driver
+	 * when sending the response to each driver-originated command, so
+	 * the driver can match the response to the command.  Since the values
+	 * don't get used by uCode, the driver may set up an arbitrary format.
+	 *
+	 * There is one exception:  uCode sets bit 15 when it originates
+	 * the response/notification, i.e. when the response/notification
+	 * is not a direct response to a command sent by the driver.  For
+	 * example, uCode issues REPLY_RX when it sends a received frame
+	 * to the driver; it is not a direct response to any driver command.
+	 *
+	 * The Linux driver uses the following format:
+	 *
+	 *  0:7		tfd index - position within TX queue
+	 *  8:12	TX queue id
+	 *  13:14	reserved
+	 *  15		unsolicited RX or uCode-originated notification
+	 */
+	__le16 sequence;
+} __packed;
+
+/* iwl_cmd_header flags value */
+#define IWL_CMD_FAILED_MSK 0x40
+
+
+#define FH_RSCSR_FRAME_SIZE_MSK		0x00003FFF	/* bits 0-13 */
+#define FH_RSCSR_FRAME_INVALID		0x55550000
+#define FH_RSCSR_FRAME_ALIGN		0x40
+
+struct iwl_rx_packet {
+	/*
+	 * The first 4 bytes of the RX frame header contain both the RX frame
+	 * size and some flags.
+	 * Bit fields:
+	 * 31:    flag flush RB request
+	 * 30:    flag ignore TC (terminal counter) request
+	 * 29:    flag fast IRQ request
+	 * 28-14: Reserved
+	 * 13-00: RX frame size
+	 */
+	__le32 len_n_flags;
+	struct iwl_cmd_header hdr;
+	u8 data[];
+} __packed;
+
+static inline u32 iwl_rx_packet_len(const struct iwl_rx_packet *pkt)
+{
+	return le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
+}
+
+static inline u32 iwl_rx_packet_payload_len(const struct iwl_rx_packet *pkt)
+{
+	return iwl_rx_packet_len(pkt) - sizeof(pkt->hdr);
+}
+
+/**
+ * enum CMD_MODE - how to send the host commands ?
+ *
+ * @CMD_ASYNC: Return right away and don't wait for the response
+ * @CMD_WANT_SKB: Not valid with CMD_ASYNC. The caller needs the buffer of
+ *	the response. The caller needs to call iwl_free_resp when done.
+ * @CMD_HIGH_PRIO: The command is high priority - it goes to the front of the
+ *	command queue, but after other high priority commands. Valid only
+ *	with CMD_ASYNC.
+ * @CMD_SEND_IN_IDLE: The command should be sent even when the trans is idle.
+ * @CMD_MAKE_TRANS_IDLE: The command response should mark the trans as idle.
+ * @CMD_WAKE_UP_TRANS: The command response should wake up the trans
+ *	(i.e. mark it as non-idle).
+ */
+enum CMD_MODE {
+	CMD_ASYNC		= BIT(0),
+	CMD_WANT_SKB		= BIT(1),
+	CMD_SEND_IN_RFKILL	= BIT(2),
+	CMD_HIGH_PRIO		= BIT(3),
+	CMD_SEND_IN_IDLE	= BIT(4),
+	CMD_MAKE_TRANS_IDLE	= BIT(5),
+	CMD_WAKE_UP_TRANS	= BIT(6),
+};
+
+#define DEF_CMD_PAYLOAD_SIZE 320
+
+/**
+ * struct iwl_device_cmd
+ *
+ * For allocation of the command and tx queues, this establishes the overall
+ * size of the largest command we send to uCode, except for commands that
+ * aren't fully copied and use other TFD space.
+ */
+struct iwl_device_cmd {
+	struct iwl_cmd_header hdr;	/* uCode API */
+	u8 payload[DEF_CMD_PAYLOAD_SIZE];
+} __packed;
+
+#define TFD_MAX_PAYLOAD_SIZE (sizeof(struct iwl_device_cmd))
+
+/*
+ * number of transfer buffers (fragments) per transmit frame descriptor;
+ * this is just the driver's idea, the hardware supports 20
+ */
+#define IWL_MAX_CMD_TBS_PER_TFD	2
+
+/**
+ * struct iwl_hcmd_dataflag - flag for each one of the chunks of the command
+ *
+ * @IWL_HCMD_DFL_NOCOPY: By default, the command is copied to the host command's
+ *	ring. The transport layer doesn't map the command's buffer to DMA, but
+ *	rather copies it to a previously allocated DMA buffer. This flag tells
+ *	the transport layer not to copy the command, but to map the existing
+ *	buffer (that is passed in) instead. This saves the memcpy and allows
+ *	commands that are bigger than the fixed buffer to be submitted.
+ *	Note that a TFD entry after a NOCOPY one cannot be a normal copied one.
+ * @IWL_HCMD_DFL_DUP: Only valid without NOCOPY, duplicate the memory for this
+ *	chunk internally and free it again after the command completes. This
+ *	can (currently) be used only once per command.
+ *	Note that a TFD entry after a DUP one cannot be a normal copied one.
+ */
+enum iwl_hcmd_dataflag {
+	IWL_HCMD_DFL_NOCOPY	= BIT(0),
+	IWL_HCMD_DFL_DUP	= BIT(1),
+};
+
+/**
+ * struct iwl_host_cmd - Host command to the uCode
+ *
+ * @data: array of chunks that composes the data of the host command
+ * @resp_pkt: response packet, if %CMD_WANT_SKB was set
+ * @_rx_page_order: (internally used to free response packet)
+ * @_rx_page_addr: (internally used to free response packet)
+ * @handler_status: return value of the handler of the command
+ *	(put in setup_rx_handlers) - valid for SYNC mode only
+ * @flags: can be CMD_*
+ * @len: array of the lengths of the chunks in data
+ * @dataflags: IWL_HCMD_DFL_*
+ * @id: id of the host command
+ */
+struct iwl_host_cmd {
+	const void *data[IWL_MAX_CMD_TBS_PER_TFD];
+	struct iwl_rx_packet *resp_pkt;
+	unsigned long _rx_page_addr;
+	u32 _rx_page_order;
+	int handler_status;
+
+	u32 flags;
+	u16 len[IWL_MAX_CMD_TBS_PER_TFD];
+	u8 dataflags[IWL_MAX_CMD_TBS_PER_TFD];
+	u8 id;
+};
+
+static inline void iwl_free_resp(struct iwl_host_cmd *cmd)
+{
+	free_pages(cmd->_rx_page_addr, cmd->_rx_page_order);
+}
+
+struct iwl_rx_cmd_buffer {
+	struct page *_page;
+	int _offset;
+	bool _page_stolen;
+	u32 _rx_page_order;
+	unsigned int truesize;
+};
+
+static inline void *rxb_addr(struct iwl_rx_cmd_buffer *r)
+{
+	return (void *)((unsigned long)page_address(r->_page) + r->_offset);
+}
+
+static inline int rxb_offset(struct iwl_rx_cmd_buffer *r)
+{
+	return r->_offset;
+}
+
+static inline struct page *rxb_steal_page(struct iwl_rx_cmd_buffer *r)
+{
+	r->_page_stolen = true;
+	get_page(r->_page);
+	return r->_page;
+}
+
+static inline void iwl_free_rxb(struct iwl_rx_cmd_buffer *r)
+{
+	__free_pages(r->_page, r->_rx_page_order);
+}
+
+#define MAX_NO_RECLAIM_CMDS	6
+
+#define IWL_MASK(lo, hi) ((1 << (hi)) | ((1 << (hi)) - (1 << (lo))))
+
+/*
+ * Maximum number of HW queues the transport layer
+ * currently supports
+ */
+#define IWL_MAX_HW_QUEUES		32
+#define IWL_MAX_TID_COUNT	8
+#define IWL_FRAME_LIMIT	64
+
+/**
+ * enum iwl_wowlan_status - WoWLAN image/device status
+ * @IWL_D3_STATUS_ALIVE: firmware is still running after resume
+ * @IWL_D3_STATUS_RESET: device was reset while suspended
+ */
+enum iwl_d3_status {
+	IWL_D3_STATUS_ALIVE,
+	IWL_D3_STATUS_RESET,
+};
+
+/**
+ * enum iwl_trans_status: transport status flags
+ * @STATUS_SYNC_HCMD_ACTIVE: a SYNC command is being processed
+ * @STATUS_DEVICE_ENABLED: APM is enabled
+ * @STATUS_TPOWER_PMI: the device might be asleep (need to wake it up)
+ * @STATUS_INT_ENABLED: interrupts are enabled
+ * @STATUS_RFKILL: the HW RFkill switch is in KILL position
+ * @STATUS_FW_ERROR: the fw is in error state
+ * @STATUS_TRANS_GOING_IDLE: shutting down the trans, only special commands
+ *	are sent
+ * @STATUS_TRANS_IDLE: the trans is idle - general commands are not to be sent
+ */
+enum iwl_trans_status {
+	STATUS_SYNC_HCMD_ACTIVE,
+	STATUS_DEVICE_ENABLED,
+	STATUS_TPOWER_PMI,
+	STATUS_INT_ENABLED,
+	STATUS_RFKILL,
+	STATUS_FW_ERROR,
+	STATUS_TRANS_GOING_IDLE,
+	STATUS_TRANS_IDLE,
+};
+
+/**
+ * struct iwl_trans_config - transport configuration
+ *
+ * @op_mode: pointer to the upper layer.
+ * @cmd_queue: the index of the command queue.
+ *	Must be set before start_fw.
+ * @cmd_fifo: the fifo for host commands
+ * @cmd_q_wdg_timeout: the timeout of the watchdog timer for the command queue.
+ * @no_reclaim_cmds: Some devices erroneously don't set the
+ *	SEQ_RX_FRAME bit on some notifications, this is the
+ *	list of such notifications to filter. Max length is
+ *	%MAX_NO_RECLAIM_CMDS.
+ * @n_no_reclaim_cmds: # of commands in list
+ * @rx_buf_size_8k: 8 kB RX buffer size needed for A-MSDUs,
+ *	if unset 4k will be the RX buffer size
+ * @bc_table_dword: set to true if the BC table expects the byte count to be
+ *	in DWORD (as opposed to bytes)
+ * @scd_set_active: should the transport configure the SCD for HCMD queue
+ * @command_names: array of command names, must be 256 entries
+ *	(one for each command); for debugging only
+ * @sdio_adma_addr: the default address to set for the ADMA in SDIO mode until
+ *	we get the ALIVE from the uCode
+ */
+struct iwl_trans_config {
+	struct iwl_op_mode *op_mode;
+
+	u8 cmd_queue;
+	u8 cmd_fifo;
+	unsigned int cmd_q_wdg_timeout;
+	const u8 *no_reclaim_cmds;
+	unsigned int n_no_reclaim_cmds;
+
+	bool rx_buf_size_8k;
+	bool bc_table_dword;
+	bool scd_set_active;
+	const char *const *command_names;
+
+	u32 sdio_adma_addr;
+};
+
+struct iwl_trans_dump_data {
+	u32 len;
+	u8 data[];
+};
+
+struct iwl_trans;
+
+struct iwl_trans_txq_scd_cfg {
+	u8 fifo;
+	s8 sta_id;
+	u8 tid;
+	bool aggregate;
+	int frame_limit;
+};
+
+/**
+ * struct iwl_trans_ops - transport specific operations
+ *
+ * All the handlers MUST be implemented
+ *
+ * @start_hw: starts the HW. If low_power is true, the NIC needs to be taken
+ *	out of a low power state. From that point on, the HW can send
+ *	interrupts. May sleep.
+ * @op_mode_leave: Turn off the HW RF kill indication if on
+ *	May sleep
+ * @start_fw: allocates and inits all the resources for the transport
+ *	layer. Also kick a fw image.
+ *	May sleep
+ * @fw_alive: called when the fw sends alive notification. If the fw provides
+ *	the SCD base address in SRAM, then provide it here, or 0 otherwise.
+ *	May sleep
+ * @stop_device: stops the whole device (embedded CPU put to reset) and stops
+ *	the HW. If low_power is true, the NIC will be put in low power state.
+ *	From that point on, the HW will be stopped but will still issue an
+ *	interrupt if the HW RF kill switch is triggered.
+ *	This callback must do the right thing and not crash even if %start_hw()
+ *	was called but not &start_fw(). May sleep.
+ * @d3_suspend: put the device into the correct mode for WoWLAN during
+ *	suspend. This is optional, if not implemented WoWLAN will not be
+ *	supported. This callback may sleep.
+ * @d3_resume: resume the device after WoWLAN, enabling the opmode to
+ *	talk to the WoWLAN image to get its status. This is optional, if not
+ *	implemented WoWLAN will not be supported. This callback may sleep.
+ * @send_cmd:send a host command. Must return -ERFKILL if RFkill is asserted.
+ *	If RFkill is asserted in the middle of a SYNC host command, it must
+ *	return -ERFKILL straight away.
+ *	May sleep only if CMD_ASYNC is not set
+ * @tx: send an skb
+ *	Must be atomic
+ * @reclaim: free packet until ssn. Returns a list of freed packets.
+ *	Must be atomic
+ * @txq_enable: setup a queue. To setup an AC queue, use the
+ *	iwl_trans_ac_txq_enable wrapper. fw_alive must have been called before
+ *	this one. The op_mode must not configure the HCMD queue. The scheduler
+ *	configuration may be %NULL, in which case the hardware will not be
+ *	configured. May sleep.
+ * @txq_disable: de-configure a Tx queue to send AMPDUs
+ *	Must be atomic
+ * @wait_tx_queue_empty: wait until tx queues are empty. May sleep.
+ * @freeze_txq_timer: prevents the timer of the queue from firing until the
+ *	queue is set to awake. Must be atomic.
+ * @dbgfs_register: add the dbgfs files under this directory. Files will be
+ *	automatically deleted.
+ * @write8: write a u8 to a register at offset ofs from the BAR
+ * @write32: write a u32 to a register at offset ofs from the BAR
+ * @read32: read a u32 register at offset ofs from the BAR
+ * @read_prph: read a DWORD from a periphery register
+ * @write_prph: write a DWORD to a periphery register
+ * @read_mem: read device's SRAM in DWORD
+ * @write_mem: write device's SRAM in DWORD. If %buf is %NULL, then the memory
+ *	will be zeroed.
+ * @configure: configure parameters required by the transport layer from
+ *	the op_mode. May be called several times before start_fw, can't be
+ *	called after that.
+ * @set_pmi: set the power pmi state
+ * @grab_nic_access: wake the NIC to be able to access non-HBUS regs.
+ *	Sleeping is not allowed between grab_nic_access and
+ *	release_nic_access.
+ * @release_nic_access: let the NIC go to sleep. The "flags" parameter
+ *	must be the same one that was sent before to the grab_nic_access.
+ * @set_bits_mask - set SRAM register according to value and mask.
+ * @ref: grab a reference to the transport/FW layers, disallowing
+ *	certain low power states
+ * @unref: release a reference previously taken with @ref. Note that
+ *	initially the reference count is 1, making an initial @unref
+ *	necessary to allow low power states.
+ * @dump_data: return a vmalloc'ed buffer with debug data, maybe containing last
+ *	TX'ed commands and similar. The buffer will be vfree'd by the caller.
+ *	Note that the transport must fill in the proper file headers.
+ */
+struct iwl_trans_ops {
+
+	int (*start_hw)(struct iwl_trans *iwl_trans, bool low_power);
+	void (*op_mode_leave)(struct iwl_trans *iwl_trans);
+	int (*start_fw)(struct iwl_trans *trans, const struct fw_img *fw,
+			bool run_in_rfkill);
+	int (*update_sf)(struct iwl_trans *trans,
+			 struct iwl_sf_region *st_fwrd_space);
+	void (*fw_alive)(struct iwl_trans *trans, u32 scd_addr);
+	void (*stop_device)(struct iwl_trans *trans, bool low_power);
+
+	void (*d3_suspend)(struct iwl_trans *trans, bool test);
+	int (*d3_resume)(struct iwl_trans *trans, enum iwl_d3_status *status,
+			 bool test);
+
+	int (*send_cmd)(struct iwl_trans *trans, struct iwl_host_cmd *cmd);
+
+	int (*tx)(struct iwl_trans *trans, struct sk_buff *skb,
+		  struct iwl_device_cmd *dev_cmd, int queue);
+	void (*reclaim)(struct iwl_trans *trans, int queue, int ssn,
+			struct sk_buff_head *skbs);
+
+	void (*txq_enable)(struct iwl_trans *trans, int queue, u16 ssn,
+			   const struct iwl_trans_txq_scd_cfg *cfg,
+			   unsigned int queue_wdg_timeout);
+	void (*txq_disable)(struct iwl_trans *trans, int queue,
+			    bool configure_scd);
+
+	int (*dbgfs_register)(struct iwl_trans *trans, struct dentry* dir);
+	int (*wait_tx_queue_empty)(struct iwl_trans *trans, u32 txq_bm);
+	void (*freeze_txq_timer)(struct iwl_trans *trans, unsigned long txqs,
+				 bool freeze);
+
+	void (*write8)(struct iwl_trans *trans, u32 ofs, u8 val);
+	void (*write32)(struct iwl_trans *trans, u32 ofs, u32 val);
+	u32 (*read32)(struct iwl_trans *trans, u32 ofs);
+	u32 (*read_prph)(struct iwl_trans *trans, u32 ofs);
+	void (*write_prph)(struct iwl_trans *trans, u32 ofs, u32 val);
+	int (*read_mem)(struct iwl_trans *trans, u32 addr,
+			void *buf, int dwords);
+	int (*write_mem)(struct iwl_trans *trans, u32 addr,
+			 const void *buf, int dwords);
+	void (*configure)(struct iwl_trans *trans,
+			  const struct iwl_trans_config *trans_cfg);
+	void (*set_pmi)(struct iwl_trans *trans, bool state);
+	bool (*grab_nic_access)(struct iwl_trans *trans, bool silent,
+				unsigned long *flags);
+	void (*release_nic_access)(struct iwl_trans *trans,
+				   unsigned long *flags);
+	void (*set_bits_mask)(struct iwl_trans *trans, u32 reg, u32 mask,
+			      u32 value);
+	void (*ref)(struct iwl_trans *trans);
+	void (*unref)(struct iwl_trans *trans);
+	void (*suspend)(struct iwl_trans *trans);
+	void (*resume)(struct iwl_trans *trans);
+
+	struct iwl_trans_dump_data *(*dump_data)(struct iwl_trans *trans);
+};
+
+/**
+ * enum iwl_trans_state - state of the transport layer
+ *
+ * @IWL_TRANS_NO_FW: no fw has sent an alive response
+ * @IWL_TRANS_FW_ALIVE: a fw has sent an alive response
+ */
+enum iwl_trans_state {
+	IWL_TRANS_NO_FW = 0,
+	IWL_TRANS_FW_ALIVE	= 1,
+};
+
+/**
+ * enum iwl_d0i3_mode - d0i3 mode
+ *
+ * @IWL_D0I3_MODE_OFF - d0i3 is disabled
+ * @IWL_D0I3_MODE_ON_IDLE - enter d0i3 when device is idle
+ *	(e.g. no active references)
+ * @IWL_D0I3_MODE_ON_SUSPEND - enter d0i3 only on suspend
+ *	(in case of 'any' trigger)
+ */
+enum iwl_d0i3_mode {
+	IWL_D0I3_MODE_OFF = 0,
+	IWL_D0I3_MODE_ON_IDLE,
+	IWL_D0I3_MODE_ON_SUSPEND,
+};
+
+/**
+ * struct iwl_trans - transport common data
+ *
+ * @ops - pointer to iwl_trans_ops
+ * @op_mode - pointer to the op_mode
+ * @cfg - pointer to the configuration
+ * @status: a bit-mask of transport status flags
+ * @dev - pointer to struct device * that represents the device
+ * @hw_id: a u32 with the ID of the device / sub-device.
+ *	Set during transport allocation.
+ * @hw_id_str: a string with info about HW ID. Set during transport allocation.
+ * @pm_support: set to true in start_hw if link pm is supported
+ * @ltr_enabled: set to true if the LTR is enabled
+ * @dev_cmd_pool: pool for Tx cmd allocation - for internal use only.
+ *	The user should use iwl_trans_{alloc,free}_tx_cmd.
+ * @dev_cmd_headroom: room needed for the transport's private use before the
+ *	device_cmd for Tx - for internal use only
+ *	The user should use iwl_trans_{alloc,free}_tx_cmd.
+ * @rx_mpdu_cmd: MPDU RX command ID, must be assigned by opmode before
+ *	starting the firmware, used for tracing
+ * @rx_mpdu_cmd_hdr_size: used for tracing, amount of data before the
+ *	start of the 802.11 header in the @rx_mpdu_cmd
+ * @dflt_pwr_limit: default power limit fetched from the platform (ACPI)
+ * @dbg_dest_tlv: points to the destination TLV for debug
+ * @dbg_conf_tlv: array of pointers to configuration TLVs for debug
+ * @dbg_trigger_tlv: array of pointers to triggers TLVs for debug
+ * @dbg_dest_reg_num: num of reg_ops in %dbg_dest_tlv
+ */
+struct iwl_trans {
+	const struct iwl_trans_ops *ops;
+	struct iwl_op_mode *op_mode;
+	const struct iwl_cfg *cfg;
+	enum iwl_trans_state state;
+	unsigned long status;
+
+	struct device *dev;
+	u32 hw_rev;
+	u32 hw_id;
+	char hw_id_str[52];
+
+	u8 rx_mpdu_cmd, rx_mpdu_cmd_hdr_size;
+
+	bool pm_support;
+	bool ltr_enabled;
+
+	/* The following fields are internal only */
+	struct kmem_cache *dev_cmd_pool;
+	size_t dev_cmd_headroom;
+	char dev_cmd_pool_name[50];
+
+	struct dentry *dbgfs_dir;
+
+#ifdef CONFIG_LOCKDEP
+	struct lockdep_map sync_cmd_lockdep_map;
+#endif
+
+	u64 dflt_pwr_limit;
+
+	const struct iwl_fw_dbg_dest_tlv *dbg_dest_tlv;
+	const struct iwl_fw_dbg_conf_tlv *dbg_conf_tlv[FW_DBG_CONF_MAX];
+	struct iwl_fw_dbg_trigger_tlv * const *dbg_trigger_tlv;
+	u8 dbg_dest_reg_num;
+
+	enum iwl_d0i3_mode d0i3_mode;
+
+	/* pointer to trans specific struct */
+	/*Ensure that this pointer will always be aligned to sizeof pointer */
+	char trans_specific[0] __aligned(sizeof(void *));
+};
+
+static inline void iwl_trans_configure(struct iwl_trans *trans,
+				       const struct iwl_trans_config *trans_cfg)
+{
+	trans->op_mode = trans_cfg->op_mode;
+
+	trans->ops->configure(trans, trans_cfg);
+}
+
+static inline int _iwl_trans_start_hw(struct iwl_trans *trans, bool low_power)
+{
+	might_sleep();
+
+	return trans->ops->start_hw(trans, low_power);
+}
+
+static inline int iwl_trans_start_hw(struct iwl_trans *trans)
+{
+	return trans->ops->start_hw(trans, true);
+}
+
+static inline void iwl_trans_op_mode_leave(struct iwl_trans *trans)
+{
+	might_sleep();
+
+	if (trans->ops->op_mode_leave)
+		trans->ops->op_mode_leave(trans);
+
+	trans->op_mode = NULL;
+
+	trans->state = IWL_TRANS_NO_FW;
+}
+
+static inline void iwl_trans_fw_alive(struct iwl_trans *trans, u32 scd_addr)
+{
+	might_sleep();
+
+	trans->state = IWL_TRANS_FW_ALIVE;
+
+	trans->ops->fw_alive(trans, scd_addr);
+}
+
+static inline int iwl_trans_start_fw(struct iwl_trans *trans,
+				     const struct fw_img *fw,
+				     bool run_in_rfkill)
+{
+	might_sleep();
+
+	WARN_ON_ONCE(!trans->rx_mpdu_cmd);
+
+	clear_bit(STATUS_FW_ERROR, &trans->status);
+	return trans->ops->start_fw(trans, fw, run_in_rfkill);
+}
+
+static inline int iwl_trans_update_sf(struct iwl_trans *trans,
+				      struct iwl_sf_region *st_fwrd_space)
+{
+	might_sleep();
+
+	if (trans->ops->update_sf)
+		return trans->ops->update_sf(trans, st_fwrd_space);
+
+	return 0;
+}
+
+static inline void _iwl_trans_stop_device(struct iwl_trans *trans,
+					  bool low_power)
+{
+	might_sleep();
+
+	trans->ops->stop_device(trans, low_power);
+
+	trans->state = IWL_TRANS_NO_FW;
+}
+
+static inline void iwl_trans_stop_device(struct iwl_trans *trans)
+{
+	_iwl_trans_stop_device(trans, true);
+}
+
+static inline void iwl_trans_d3_suspend(struct iwl_trans *trans, bool test)
+{
+	might_sleep();
+	trans->ops->d3_suspend(trans, test);
+}
+
+static inline int iwl_trans_d3_resume(struct iwl_trans *trans,
+				      enum iwl_d3_status *status,
+				      bool test)
+{
+	might_sleep();
+	return trans->ops->d3_resume(trans, status, test);
+}
+
+static inline void iwl_trans_ref(struct iwl_trans *trans)
+{
+	if (trans->ops->ref)
+		trans->ops->ref(trans);
+}
+
+static inline void iwl_trans_unref(struct iwl_trans *trans)
+{
+	if (trans->ops->unref)
+		trans->ops->unref(trans);
+}
+
+static inline void iwl_trans_suspend(struct iwl_trans *trans)
+{
+	if (trans->ops->suspend)
+		trans->ops->suspend(trans);
+}
+
+static inline void iwl_trans_resume(struct iwl_trans *trans)
+{
+	if (trans->ops->resume)
+		trans->ops->resume(trans);
+}
+
+static inline struct iwl_trans_dump_data *
+iwl_trans_dump_data(struct iwl_trans *trans)
+{
+	if (!trans->ops->dump_data)
+		return NULL;
+	return trans->ops->dump_data(trans);
+}
+
+static inline int iwl_trans_send_cmd(struct iwl_trans *trans,
+				     struct iwl_host_cmd *cmd)
+{
+	int ret;
+
+	if (unlikely(!(cmd->flags & CMD_SEND_IN_RFKILL) &&
+		     test_bit(STATUS_RFKILL, &trans->status)))
+		return -ERFKILL;
+
+	if (unlikely(test_bit(STATUS_FW_ERROR, &trans->status)))
+		return -EIO;
+
+	if (unlikely(trans->state != IWL_TRANS_FW_ALIVE)) {
+		IWL_ERR(trans, "%s bad state = %d\n", __func__, trans->state);
+		return -EIO;
+	}
+
+	if (!(cmd->flags & CMD_ASYNC))
+		lock_map_acquire_read(&trans->sync_cmd_lockdep_map);
+
+	ret = trans->ops->send_cmd(trans, cmd);
+
+	if (!(cmd->flags & CMD_ASYNC))
+		lock_map_release(&trans->sync_cmd_lockdep_map);
+
+	return ret;
+}
+
+static inline struct iwl_device_cmd *
+iwl_trans_alloc_tx_cmd(struct iwl_trans *trans)
+{
+	u8 *dev_cmd_ptr = kmem_cache_alloc(trans->dev_cmd_pool, GFP_ATOMIC);
+
+	if (unlikely(dev_cmd_ptr == NULL))
+		return NULL;
+
+	return (struct iwl_device_cmd *)
+			(dev_cmd_ptr + trans->dev_cmd_headroom);
+}
+
+static inline void iwl_trans_free_tx_cmd(struct iwl_trans *trans,
+					 struct iwl_device_cmd *dev_cmd)
+{
+	u8 *dev_cmd_ptr = (u8 *)dev_cmd - trans->dev_cmd_headroom;
+
+	kmem_cache_free(trans->dev_cmd_pool, dev_cmd_ptr);
+}
+
+static inline int iwl_trans_tx(struct iwl_trans *trans, struct sk_buff *skb,
+			       struct iwl_device_cmd *dev_cmd, int queue)
+{
+	if (unlikely(test_bit(STATUS_FW_ERROR, &trans->status)))
+		return -EIO;
+
+	if (unlikely(trans->state != IWL_TRANS_FW_ALIVE))
+		IWL_ERR(trans, "%s bad state = %d\n", __func__, trans->state);
+
+	return trans->ops->tx(trans, skb, dev_cmd, queue);
+}
+
+static inline void iwl_trans_reclaim(struct iwl_trans *trans, int queue,
+				     int ssn, struct sk_buff_head *skbs)
+{
+	if (unlikely(trans->state != IWL_TRANS_FW_ALIVE))
+		IWL_ERR(trans, "%s bad state = %d\n", __func__, trans->state);
+
+	trans->ops->reclaim(trans, queue, ssn, skbs);
+}
+
+static inline void iwl_trans_txq_disable(struct iwl_trans *trans, int queue,
+					 bool configure_scd)
+{
+	trans->ops->txq_disable(trans, queue, configure_scd);
+}
+
+static inline void
+iwl_trans_txq_enable_cfg(struct iwl_trans *trans, int queue, u16 ssn,
+			 const struct iwl_trans_txq_scd_cfg *cfg,
+			 unsigned int queue_wdg_timeout)
+{
+	might_sleep();
+
+	if (unlikely((trans->state != IWL_TRANS_FW_ALIVE)))
+		IWL_ERR(trans, "%s bad state = %d\n", __func__, trans->state);
+
+	trans->ops->txq_enable(trans, queue, ssn, cfg, queue_wdg_timeout);
+}
+
+static inline void iwl_trans_txq_enable(struct iwl_trans *trans, int queue,
+					int fifo, int sta_id, int tid,
+					int frame_limit, u16 ssn,
+					unsigned int queue_wdg_timeout)
+{
+	struct iwl_trans_txq_scd_cfg cfg = {
+		.fifo = fifo,
+		.sta_id = sta_id,
+		.tid = tid,
+		.frame_limit = frame_limit,
+		.aggregate = sta_id >= 0,
+	};
+
+	iwl_trans_txq_enable_cfg(trans, queue, ssn, &cfg, queue_wdg_timeout);
+}
+
+static inline
+void iwl_trans_ac_txq_enable(struct iwl_trans *trans, int queue, int fifo,
+			     unsigned int queue_wdg_timeout)
+{
+	struct iwl_trans_txq_scd_cfg cfg = {
+		.fifo = fifo,
+		.sta_id = -1,
+		.tid = IWL_MAX_TID_COUNT,
+		.frame_limit = IWL_FRAME_LIMIT,
+		.aggregate = false,
+	};
+
+	iwl_trans_txq_enable_cfg(trans, queue, 0, &cfg, queue_wdg_timeout);
+}
+
+static inline void iwl_trans_freeze_txq_timer(struct iwl_trans *trans,
+					      unsigned long txqs,
+					      bool freeze)
+{
+	if (unlikely(trans->state != IWL_TRANS_FW_ALIVE))
+		IWL_ERR(trans, "%s bad state = %d\n", __func__, trans->state);
+
+	if (trans->ops->freeze_txq_timer)
+		trans->ops->freeze_txq_timer(trans, txqs, freeze);
+}
+
+static inline int iwl_trans_wait_tx_queue_empty(struct iwl_trans *trans,
+						u32 txqs)
+{
+	if (unlikely(trans->state != IWL_TRANS_FW_ALIVE))
+		IWL_ERR(trans, "%s bad state = %d\n", __func__, trans->state);
+
+	return trans->ops->wait_tx_queue_empty(trans, txqs);
+}
+
+static inline int iwl_trans_dbgfs_register(struct iwl_trans *trans,
+					   struct dentry *dir)
+{
+	return trans->ops->dbgfs_register(trans, dir);
+}
+
+static inline void iwl_trans_write8(struct iwl_trans *trans, u32 ofs, u8 val)
+{
+	trans->ops->write8(trans, ofs, val);
+}
+
+static inline void iwl_trans_write32(struct iwl_trans *trans, u32 ofs, u32 val)
+{
+	trans->ops->write32(trans, ofs, val);
+}
+
+static inline u32 iwl_trans_read32(struct iwl_trans *trans, u32 ofs)
+{
+	return trans->ops->read32(trans, ofs);
+}
+
+static inline u32 iwl_trans_read_prph(struct iwl_trans *trans, u32 ofs)
+{
+	return trans->ops->read_prph(trans, ofs);
+}
+
+static inline void iwl_trans_write_prph(struct iwl_trans *trans, u32 ofs,
+					u32 val)
+{
+	return trans->ops->write_prph(trans, ofs, val);
+}
+
+static inline int iwl_trans_read_mem(struct iwl_trans *trans, u32 addr,
+				     void *buf, int dwords)
+{
+	return trans->ops->read_mem(trans, addr, buf, dwords);
+}
+
+#define iwl_trans_read_mem_bytes(trans, addr, buf, bufsize)		      \
+	do {								      \
+		if (__builtin_constant_p(bufsize))			      \
+			BUILD_BUG_ON((bufsize) % sizeof(u32));		      \
+		iwl_trans_read_mem(trans, addr, buf, (bufsize) / sizeof(u32));\
+	} while (0)
+
+static inline u32 iwl_trans_read_mem32(struct iwl_trans *trans, u32 addr)
+{
+	u32 value;
+
+	if (WARN_ON(iwl_trans_read_mem(trans, addr, &value, 1)))
+		return 0xa5a5a5a5;
+
+	return value;
+}
+
+static inline int iwl_trans_write_mem(struct iwl_trans *trans, u32 addr,
+				      const void *buf, int dwords)
+{
+	return trans->ops->write_mem(trans, addr, buf, dwords);
+}
+
+static inline u32 iwl_trans_write_mem32(struct iwl_trans *trans, u32 addr,
+					u32 val)
+{
+	return iwl_trans_write_mem(trans, addr, &val, 1);
+}
+
+static inline void iwl_trans_set_pmi(struct iwl_trans *trans, bool state)
+{
+	if (trans->ops->set_pmi)
+		trans->ops->set_pmi(trans, state);
+}
+
+static inline void
+iwl_trans_set_bits_mask(struct iwl_trans *trans, u32 reg, u32 mask, u32 value)
+{
+	trans->ops->set_bits_mask(trans, reg, mask, value);
+}
+
+#define iwl_trans_grab_nic_access(trans, silent, flags)	\
+	__cond_lock(nic_access,				\
+		    likely((trans)->ops->grab_nic_access(trans, silent, flags)))
+
+static inline void __releases(nic_access)
+iwl_trans_release_nic_access(struct iwl_trans *trans, unsigned long *flags)
+{
+	trans->ops->release_nic_access(trans, flags);
+	__release(nic_access);
+}
+
+static inline void iwl_trans_fw_error(struct iwl_trans *trans)
+{
+	if (WARN_ON_ONCE(!trans->op_mode))
+		return;
+
+	/* prevent double restarts due to the same erroneous FW */
+	if (!test_and_set_bit(STATUS_FW_ERROR, &trans->status))
+		iwl_op_mode_nic_error(trans->op_mode);
+}
+
+/*****************************************************
+* driver (transport) register/unregister functions
+******************************************************/
+int __must_check iwl_pci_register_driver(void);
+void iwl_pci_unregister_driver(void);
+
+static inline void trans_lockdep_init(struct iwl_trans *trans)
+{
+#ifdef CONFIG_LOCKDEP
+	static struct lock_class_key __key;
+
+	lockdep_init_map(&trans->sync_cmd_lockdep_map, "sync_cmd_lockdep_map",
+			 &__key, 0);
+#endif
+}
+
+#endif /* __iwl_trans_h__ */