mirror of https://gitee.com/openkylin/linux.git
398 lines
13 KiB
C
398 lines
13 KiB
C
/******************************************************************************
|
|
*
|
|
* 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 - 2011 Intel Corporation. All rights reserved.
|
|
*
|
|
* 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 LICENSE.GPL.
|
|
*
|
|
* 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 - 2011 Intel Corporation. All rights reserved.
|
|
* 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/debugfs.h>
|
|
#include <linux/skbuff.h>
|
|
|
|
#include "iwl-shared.h"
|
|
#include "iwl-commands.h"
|
|
|
|
/*This file includes the declaration that are exported from the transport
|
|
* layer */
|
|
|
|
struct iwl_priv;
|
|
struct iwl_shared;
|
|
|
|
#define SEQ_TO_SN(seq) (((seq) & IEEE80211_SCTL_SEQ) >> 4)
|
|
#define SN_TO_SEQ(ssn) (((ssn) << 4) & IEEE80211_SCTL_SEQ)
|
|
#define MAX_SN ((IEEE80211_SCTL_SEQ) >> 4)
|
|
|
|
enum {
|
|
CMD_SYNC = 0,
|
|
CMD_ASYNC = BIT(0),
|
|
CMD_WANT_SKB = BIT(1),
|
|
CMD_ON_DEMAND = BIT(2),
|
|
};
|
|
|
|
#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))
|
|
|
|
#define IWL_MAX_CMD_TFDS 2
|
|
|
|
enum iwl_hcmd_dataflag {
|
|
IWL_HCMD_DFL_NOCOPY = BIT(0),
|
|
};
|
|
|
|
/**
|
|
* struct iwl_host_cmd - Host command to the uCode
|
|
* @data: array of chunks that composes the data of the host command
|
|
* @reply_page: pointer to the page that holds the response to the host command
|
|
* @handler_status: return value of the handler of the command
|
|
* (put in setup_rx_handlers) - valid for SYNC mode only
|
|
* @callback:
|
|
* @flags: can be CMD_* note CMD_WANT_SKB is incompatible withe CMD_ASYNC
|
|
* @len: array of the lenths of the chunks in data
|
|
* @dataflags:
|
|
* @id: id of the host command
|
|
*/
|
|
struct iwl_host_cmd {
|
|
const void *data[IWL_MAX_CMD_TFDS];
|
|
unsigned long reply_page;
|
|
int handler_status;
|
|
|
|
u32 flags;
|
|
u16 len[IWL_MAX_CMD_TFDS];
|
|
u8 dataflags[IWL_MAX_CMD_TFDS];
|
|
u8 id;
|
|
};
|
|
|
|
/**
|
|
* struct iwl_trans_ops - transport specific operations
|
|
* @alloc: allocates the meta data (not the queues themselves)
|
|
* @request_irq: requests IRQ - will be called before the FW load in probe flow
|
|
* @start_device: allocates and inits all the resources for the transport
|
|
* layer.
|
|
* @prepare_card_hw: claim the ownership on the HW. Will be called during
|
|
* probe.
|
|
* @tx_start: starts and configures all the Tx fifo - usually done once the fw
|
|
* is alive.
|
|
* @wake_any_queue: wake all the queues of a specfic context IWL_RXON_CTX_*
|
|
* @stop_device:stops the whole device (embedded CPU put to reset)
|
|
* @send_cmd:send a host command
|
|
* @tx: send an skb
|
|
* @reclaim: free packet until ssn. Returns a list of freed packets.
|
|
* @tx_agg_alloc: allocate resources for a TX BA session
|
|
* @tx_agg_setup: setup a tx queue for AMPDU - will be called once the HW is
|
|
* ready and a successful ADDBA response has been received.
|
|
* @tx_agg_disable: de-configure a Tx queue to send AMPDUs
|
|
* @kick_nic: remove the RESET from the embedded CPU and let it run
|
|
* @free: release all the ressource for the transport layer itself such as
|
|
* irq, tasklet etc...
|
|
* @stop_queue: stop a specific queue
|
|
* @check_stuck_queue: check if a specific queue is stuck
|
|
* @wait_tx_queue_empty: wait until all tx queues are empty
|
|
* @dbgfs_register: add the dbgfs files under this directory. Files will be
|
|
* automatically deleted.
|
|
* @suspend: stop the device unless WoWLAN is configured
|
|
* @resume: resume activity of the device
|
|
*/
|
|
struct iwl_trans_ops {
|
|
|
|
struct iwl_trans *(*alloc)(struct iwl_shared *shrd);
|
|
int (*request_irq)(struct iwl_trans *iwl_trans);
|
|
int (*start_device)(struct iwl_trans *trans);
|
|
int (*prepare_card_hw)(struct iwl_trans *trans);
|
|
void (*stop_device)(struct iwl_trans *trans);
|
|
void (*tx_start)(struct iwl_trans *trans);
|
|
|
|
void (*wake_any_queue)(struct iwl_trans *trans,
|
|
enum iwl_rxon_context_id ctx,
|
|
const char *msg);
|
|
|
|
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, enum iwl_rxon_context_id ctx,
|
|
u8 sta_id, u8 tid);
|
|
int (*reclaim)(struct iwl_trans *trans, int sta_id, int tid,
|
|
int txq_id, int ssn, u32 status,
|
|
struct sk_buff_head *skbs);
|
|
|
|
int (*tx_agg_disable)(struct iwl_trans *trans,
|
|
int sta_id, int tid);
|
|
int (*tx_agg_alloc)(struct iwl_trans *trans,
|
|
int sta_id, int tid);
|
|
void (*tx_agg_setup)(struct iwl_trans *trans,
|
|
enum iwl_rxon_context_id ctx, int sta_id, int tid,
|
|
int frame_limit, u16 ssn);
|
|
|
|
void (*kick_nic)(struct iwl_trans *trans);
|
|
|
|
void (*free)(struct iwl_trans *trans);
|
|
|
|
void (*stop_queue)(struct iwl_trans *trans, int q, const char *msg);
|
|
|
|
int (*dbgfs_register)(struct iwl_trans *trans, struct dentry* dir);
|
|
int (*check_stuck_queue)(struct iwl_trans *trans, int q);
|
|
int (*wait_tx_queue_empty)(struct iwl_trans *trans);
|
|
#ifdef CONFIG_PM_SLEEP
|
|
int (*suspend)(struct iwl_trans *trans);
|
|
int (*resume)(struct iwl_trans *trans);
|
|
#endif
|
|
};
|
|
|
|
/* one for each uCode image (inst/data, boot/init/runtime) */
|
|
struct fw_desc {
|
|
dma_addr_t p_addr; /* hardware address */
|
|
void *v_addr; /* software address */
|
|
u32 len; /* size in bytes */
|
|
};
|
|
|
|
struct fw_img {
|
|
struct fw_desc code; /* firmware code image */
|
|
struct fw_desc data; /* firmware data image */
|
|
};
|
|
|
|
/* Opaque calibration results */
|
|
struct iwl_calib_result {
|
|
struct list_head list;
|
|
size_t cmd_len;
|
|
struct iwl_calib_hdr hdr;
|
|
/* data follows */
|
|
};
|
|
|
|
/**
|
|
* struct iwl_trans - transport common data
|
|
* @ops - pointer to iwl_trans_ops
|
|
* @shrd - pointer to iwl_shared which holds shared data from the upper layer
|
|
* @hcmd_lock: protects HCMD
|
|
* @ucode_write_complete: indicates that the ucode has been copied.
|
|
* @ucode_rt: run time ucode image
|
|
* @ucode_init: init ucode image
|
|
* @ucode_wowlan: wake on wireless ucode image (optional)
|
|
* @nvm_device_type: indicates OTP or eeprom
|
|
* @calib_results: list head for init calibration results
|
|
*/
|
|
struct iwl_trans {
|
|
const struct iwl_trans_ops *ops;
|
|
struct iwl_shared *shrd;
|
|
spinlock_t hcmd_lock;
|
|
|
|
u8 ucode_write_complete; /* the image write is complete */
|
|
struct fw_img ucode_rt;
|
|
struct fw_img ucode_init;
|
|
struct fw_img ucode_wowlan;
|
|
|
|
/* eeprom related variables */
|
|
int nvm_device_type;
|
|
|
|
/* init calibration results */
|
|
struct list_head calib_results;
|
|
|
|
/* pointer to trans specific struct */
|
|
/*Ensure that this pointer will always be aligned to sizeof pointer */
|
|
char trans_specific[0] __attribute__((__aligned__(sizeof(void *))));
|
|
};
|
|
|
|
static inline int iwl_trans_request_irq(struct iwl_trans *trans)
|
|
{
|
|
return trans->ops->request_irq(trans);
|
|
}
|
|
|
|
static inline int iwl_trans_start_device(struct iwl_trans *trans)
|
|
{
|
|
return trans->ops->start_device(trans);
|
|
}
|
|
|
|
static inline int iwl_trans_prepare_card_hw(struct iwl_trans *trans)
|
|
{
|
|
return trans->ops->prepare_card_hw(trans);
|
|
}
|
|
|
|
static inline void iwl_trans_stop_device(struct iwl_trans *trans)
|
|
{
|
|
trans->ops->stop_device(trans);
|
|
}
|
|
|
|
static inline void iwl_trans_tx_start(struct iwl_trans *trans)
|
|
{
|
|
trans->ops->tx_start(trans);
|
|
}
|
|
|
|
static inline void iwl_trans_wake_any_queue(struct iwl_trans *trans,
|
|
enum iwl_rxon_context_id ctx,
|
|
const char *msg)
|
|
{
|
|
trans->ops->wake_any_queue(trans, ctx, msg);
|
|
}
|
|
|
|
|
|
static inline int iwl_trans_send_cmd(struct iwl_trans *trans,
|
|
struct iwl_host_cmd *cmd)
|
|
{
|
|
return trans->ops->send_cmd(trans, cmd);
|
|
}
|
|
|
|
int iwl_trans_send_cmd_pdu(struct iwl_trans *trans, u8 id,
|
|
u32 flags, u16 len, const void *data);
|
|
|
|
static inline int iwl_trans_tx(struct iwl_trans *trans, struct sk_buff *skb,
|
|
struct iwl_device_cmd *dev_cmd, enum iwl_rxon_context_id ctx,
|
|
u8 sta_id, u8 tid)
|
|
{
|
|
return trans->ops->tx(trans, skb, dev_cmd, ctx, sta_id, tid);
|
|
}
|
|
|
|
static inline int iwl_trans_reclaim(struct iwl_trans *trans, int sta_id,
|
|
int tid, int txq_id, int ssn, u32 status,
|
|
struct sk_buff_head *skbs)
|
|
{
|
|
return trans->ops->reclaim(trans, sta_id, tid, txq_id, ssn,
|
|
status, skbs);
|
|
}
|
|
|
|
static inline int iwl_trans_tx_agg_disable(struct iwl_trans *trans,
|
|
int sta_id, int tid)
|
|
{
|
|
return trans->ops->tx_agg_disable(trans, sta_id, tid);
|
|
}
|
|
|
|
static inline int iwl_trans_tx_agg_alloc(struct iwl_trans *trans,
|
|
int sta_id, int tid)
|
|
{
|
|
return trans->ops->tx_agg_alloc(trans, sta_id, tid);
|
|
}
|
|
|
|
|
|
static inline void iwl_trans_tx_agg_setup(struct iwl_trans *trans,
|
|
enum iwl_rxon_context_id ctx,
|
|
int sta_id, int tid,
|
|
int frame_limit, u16 ssn)
|
|
{
|
|
trans->ops->tx_agg_setup(trans, ctx, sta_id, tid, frame_limit, ssn);
|
|
}
|
|
|
|
static inline void iwl_trans_kick_nic(struct iwl_trans *trans)
|
|
{
|
|
trans->ops->kick_nic(trans);
|
|
}
|
|
|
|
static inline void iwl_trans_free(struct iwl_trans *trans)
|
|
{
|
|
trans->ops->free(trans);
|
|
}
|
|
|
|
static inline void iwl_trans_stop_queue(struct iwl_trans *trans, int q,
|
|
const char *msg)
|
|
{
|
|
trans->ops->stop_queue(trans, q, msg);
|
|
}
|
|
|
|
static inline int iwl_trans_wait_tx_queue_empty(struct iwl_trans *trans)
|
|
{
|
|
return trans->ops->wait_tx_queue_empty(trans);
|
|
}
|
|
|
|
static inline int iwl_trans_check_stuck_queue(struct iwl_trans *trans, int q)
|
|
{
|
|
return trans->ops->check_stuck_queue(trans, q);
|
|
}
|
|
static inline int iwl_trans_dbgfs_register(struct iwl_trans *trans,
|
|
struct dentry *dir)
|
|
{
|
|
return trans->ops->dbgfs_register(trans, dir);
|
|
}
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
static inline int iwl_trans_suspend(struct iwl_trans *trans)
|
|
{
|
|
return trans->ops->suspend(trans);
|
|
}
|
|
|
|
static inline int iwl_trans_resume(struct iwl_trans *trans)
|
|
{
|
|
return trans->ops->resume(trans);
|
|
}
|
|
#endif
|
|
|
|
/*****************************************************
|
|
* Transport layers implementations
|
|
******************************************************/
|
|
extern const struct iwl_trans_ops trans_ops_pcie;
|
|
|
|
int iwl_alloc_fw_desc(struct iwl_bus *bus, struct fw_desc *desc,
|
|
const void *data, size_t len);
|
|
void iwl_dealloc_ucode(struct iwl_trans *trans);
|
|
|
|
int iwl_send_calib_results(struct iwl_trans *trans);
|
|
int iwl_calib_set(struct iwl_trans *trans,
|
|
const struct iwl_calib_hdr *cmd, int len);
|
|
void iwl_calib_free_results(struct iwl_trans *trans);
|
|
|
|
#endif /* __iwl_trans_h__ */
|