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5fdda0476c
There's no reason for the transport to call itself through indirect function pointers, inline the (little) code there is and remove the indirection completely. Reviewed-by: Gregory Greenman <gregory.greenman@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
798 lines
25 KiB
C
798 lines
25 KiB
C
/******************************************************************************
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*
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* This file is provided under a dual BSD/GPLv2 license. When using or
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* redistributing this file, you may do so under either license.
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2007 - 2013 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
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* USA
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*
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* The full GNU General Public License is included in this distribution
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* in the file called COPYING.
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*
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* Contact Information:
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* Intel Linux Wireless <ilw@linux.intel.com>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*
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* BSD LICENSE
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*
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* Copyright(c) 2005 - 2013 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*****************************************************************************/
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#ifndef __iwl_trans_h__
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#define __iwl_trans_h__
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#include <linux/ieee80211.h>
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#include <linux/mm.h> /* for page_address */
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#include <linux/lockdep.h>
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#include "iwl-debug.h"
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#include "iwl-config.h"
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#include "iwl-fw.h"
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/**
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* DOC: Transport layer - what is it ?
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*
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* The tranport layer is the layer that deals with the HW directly. It provides
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* an abstraction of the underlying HW to the upper layer. The transport layer
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* doesn't provide any policy, algorithm or anything of this kind, but only
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* mechanisms to make the HW do something.It is not completely stateless but
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* close to it.
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* We will have an implementation for each different supported bus.
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*/
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/**
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* DOC: Life cycle of the transport layer
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*
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* The transport layer has a very precise life cycle.
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*
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* 1) A helper function is called during the module initialization and
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* registers the bus driver's ops with the transport's alloc function.
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* 2) Bus's probe calls to the transport layer's allocation functions.
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* Of course this function is bus specific.
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* 3) This allocation functions will spawn the upper layer which will
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* register mac80211.
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*
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* 4) At some point (i.e. mac80211's start call), the op_mode will call
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* the following sequence:
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* start_hw
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* start_fw
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*
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* 5) Then when finished (or reset):
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* stop_fw (a.k.a. stop device for the moment)
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* stop_hw
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*
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* 6) Eventually, the free function will be called.
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*/
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/**
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* DOC: Host command section
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*
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* A host command is a commaned issued by the upper layer to the fw. There are
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* several versions of fw that have several APIs. The transport layer is
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* completely agnostic to these differences.
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* The transport does provide helper functionnality (i.e. SYNC / ASYNC mode),
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*/
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#define SEQ_TO_QUEUE(s) (((s) >> 8) & 0x1f)
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#define QUEUE_TO_SEQ(q) (((q) & 0x1f) << 8)
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#define SEQ_TO_INDEX(s) ((s) & 0xff)
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#define INDEX_TO_SEQ(i) ((i) & 0xff)
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#define SEQ_RX_FRAME cpu_to_le16(0x8000)
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/**
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* struct iwl_cmd_header
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*
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* This header format appears in the beginning of each command sent from the
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* driver, and each response/notification received from uCode.
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*/
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struct iwl_cmd_header {
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u8 cmd; /* Command ID: REPLY_RXON, etc. */
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u8 flags; /* 0:5 reserved, 6 abort, 7 internal */
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/*
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* The driver sets up the sequence number to values of its choosing.
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* uCode does not use this value, but passes it back to the driver
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* when sending the response to each driver-originated command, so
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* the driver can match the response to the command. Since the values
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* don't get used by uCode, the driver may set up an arbitrary format.
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*
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* There is one exception: uCode sets bit 15 when it originates
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* the response/notification, i.e. when the response/notification
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* is not a direct response to a command sent by the driver. For
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* example, uCode issues REPLY_RX when it sends a received frame
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* to the driver; it is not a direct response to any driver command.
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*
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* The Linux driver uses the following format:
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*
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* 0:7 tfd index - position within TX queue
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* 8:12 TX queue id
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* 13:14 reserved
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* 15 unsolicited RX or uCode-originated notification
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*/
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__le16 sequence;
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} __packed;
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/* iwl_cmd_header flags value */
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#define IWL_CMD_FAILED_MSK 0x40
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#define FH_RSCSR_FRAME_SIZE_MSK 0x00003FFF /* bits 0-13 */
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#define FH_RSCSR_FRAME_INVALID 0x55550000
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#define FH_RSCSR_FRAME_ALIGN 0x40
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struct iwl_rx_packet {
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/*
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* The first 4 bytes of the RX frame header contain both the RX frame
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* size and some flags.
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* Bit fields:
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* 31: flag flush RB request
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* 30: flag ignore TC (terminal counter) request
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* 29: flag fast IRQ request
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* 28-14: Reserved
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* 13-00: RX frame size
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*/
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__le32 len_n_flags;
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struct iwl_cmd_header hdr;
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u8 data[];
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} __packed;
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/**
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* enum CMD_MODE - how to send the host commands ?
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*
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* @CMD_SYNC: The caller will be stalled until the fw responds to the command
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* @CMD_ASYNC: Return right away and don't wait for the response
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* @CMD_WANT_SKB: valid only with CMD_SYNC. The caller needs the buffer of the
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* response. The caller needs to call iwl_free_resp when done.
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*/
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enum CMD_MODE {
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CMD_SYNC = 0,
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CMD_ASYNC = BIT(0),
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CMD_WANT_SKB = BIT(1),
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CMD_SEND_IN_RFKILL = BIT(2),
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};
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#define DEF_CMD_PAYLOAD_SIZE 320
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/**
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* struct iwl_device_cmd
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*
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* For allocation of the command and tx queues, this establishes the overall
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* size of the largest command we send to uCode, except for commands that
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* aren't fully copied and use other TFD space.
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*/
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struct iwl_device_cmd {
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struct iwl_cmd_header hdr; /* uCode API */
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u8 payload[DEF_CMD_PAYLOAD_SIZE];
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} __packed;
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#define TFD_MAX_PAYLOAD_SIZE (sizeof(struct iwl_device_cmd))
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/*
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* number of transfer buffers (fragments) per transmit frame descriptor;
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* this is just the driver's idea, the hardware supports 20
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*/
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#define IWL_MAX_CMD_TBS_PER_TFD 2
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/**
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* struct iwl_hcmd_dataflag - flag for each one of the chunks of the command
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*
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* @IWL_HCMD_DFL_NOCOPY: By default, the command is copied to the host command's
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* ring. The transport layer doesn't map the command's buffer to DMA, but
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* rather copies it to a previously allocated DMA buffer. This flag tells
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* the transport layer not to copy the command, but to map the existing
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* buffer (that is passed in) instead. This saves the memcpy and allows
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* commands that are bigger than the fixed buffer to be submitted.
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* Note that a TFD entry after a NOCOPY one cannot be a normal copied one.
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* @IWL_HCMD_DFL_DUP: Only valid without NOCOPY, duplicate the memory for this
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* chunk internally and free it again after the command completes. This
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* can (currently) be used only once per command.
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* Note that a TFD entry after a DUP one cannot be a normal copied one.
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*/
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enum iwl_hcmd_dataflag {
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IWL_HCMD_DFL_NOCOPY = BIT(0),
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IWL_HCMD_DFL_DUP = BIT(1),
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};
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/**
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* struct iwl_host_cmd - Host command to the uCode
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*
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* @data: array of chunks that composes the data of the host command
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* @resp_pkt: response packet, if %CMD_WANT_SKB was set
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* @_rx_page_order: (internally used to free response packet)
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* @_rx_page_addr: (internally used to free response packet)
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* @handler_status: return value of the handler of the command
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* (put in setup_rx_handlers) - valid for SYNC mode only
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* @flags: can be CMD_*
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* @len: array of the lengths of the chunks in data
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* @dataflags: IWL_HCMD_DFL_*
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* @id: id of the host command
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*/
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struct iwl_host_cmd {
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const void *data[IWL_MAX_CMD_TBS_PER_TFD];
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struct iwl_rx_packet *resp_pkt;
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unsigned long _rx_page_addr;
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u32 _rx_page_order;
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int handler_status;
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u32 flags;
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u16 len[IWL_MAX_CMD_TBS_PER_TFD];
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u8 dataflags[IWL_MAX_CMD_TBS_PER_TFD];
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u8 id;
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};
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static inline void iwl_free_resp(struct iwl_host_cmd *cmd)
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{
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free_pages(cmd->_rx_page_addr, cmd->_rx_page_order);
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}
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struct iwl_rx_cmd_buffer {
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struct page *_page;
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int _offset;
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bool _page_stolen;
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u32 _rx_page_order;
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unsigned int truesize;
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};
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static inline void *rxb_addr(struct iwl_rx_cmd_buffer *r)
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{
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return (void *)((unsigned long)page_address(r->_page) + r->_offset);
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}
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static inline int rxb_offset(struct iwl_rx_cmd_buffer *r)
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{
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return r->_offset;
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}
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static inline struct page *rxb_steal_page(struct iwl_rx_cmd_buffer *r)
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{
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r->_page_stolen = true;
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get_page(r->_page);
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return r->_page;
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}
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static inline void iwl_free_rxb(struct iwl_rx_cmd_buffer *r)
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{
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__free_pages(r->_page, r->_rx_page_order);
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}
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#define MAX_NO_RECLAIM_CMDS 6
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#define IWL_MASK(lo, hi) ((1 << (hi)) | ((1 << (hi)) - (1 << (lo))))
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/*
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* Maximum number of HW queues the transport layer
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* currently supports
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*/
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#define IWL_MAX_HW_QUEUES 32
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#define IWL_MAX_TID_COUNT 8
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#define IWL_FRAME_LIMIT 64
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/**
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* enum iwl_wowlan_status - WoWLAN image/device status
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* @IWL_D3_STATUS_ALIVE: firmware is still running after resume
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* @IWL_D3_STATUS_RESET: device was reset while suspended
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*/
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enum iwl_d3_status {
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IWL_D3_STATUS_ALIVE,
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IWL_D3_STATUS_RESET,
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};
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/**
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* struct iwl_trans_config - transport configuration
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*
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* @op_mode: pointer to the upper layer.
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* @cmd_queue: the index of the command queue.
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* Must be set before start_fw.
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* @cmd_fifo: the fifo for host commands
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* @no_reclaim_cmds: Some devices erroneously don't set the
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* SEQ_RX_FRAME bit on some notifications, this is the
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* list of such notifications to filter. Max length is
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* %MAX_NO_RECLAIM_CMDS.
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* @n_no_reclaim_cmds: # of commands in list
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* @rx_buf_size_8k: 8 kB RX buffer size needed for A-MSDUs,
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* if unset 4k will be the RX buffer size
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* @bc_table_dword: set to true if the BC table expects the byte count to be
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* in DWORD (as opposed to bytes)
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* @queue_watchdog_timeout: time (in ms) after which queues
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* are considered stuck and will trigger device restart
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* @command_names: array of command names, must be 256 entries
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* (one for each command); for debugging only
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*/
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struct iwl_trans_config {
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struct iwl_op_mode *op_mode;
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u8 cmd_queue;
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u8 cmd_fifo;
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const u8 *no_reclaim_cmds;
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int n_no_reclaim_cmds;
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bool rx_buf_size_8k;
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bool bc_table_dword;
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unsigned int queue_watchdog_timeout;
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const char **command_names;
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};
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struct iwl_trans;
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/**
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* struct iwl_trans_ops - transport specific operations
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*
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* All the handlers MUST be implemented
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*
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* @start_hw: starts the HW- from that point on, the HW can send interrupts
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* May sleep
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* @stop_hw: stops the HW- from that point on, the HW will be in low power but
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* will still issue interrupt if the HW RF kill is triggered unless
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* op_mode_leaving is true.
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* May sleep
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* @start_fw: allocates and inits all the resources for the transport
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* layer. Also kick a fw image.
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* May sleep
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* @fw_alive: called when the fw sends alive notification. If the fw provides
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* the SCD base address in SRAM, then provide it here, or 0 otherwise.
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* May sleep
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* @stop_device:stops the whole device (embedded CPU put to reset)
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* May sleep
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* @d3_suspend: put the device into the correct mode for WoWLAN during
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* suspend. This is optional, if not implemented WoWLAN will not be
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* supported. This callback may sleep.
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* @d3_resume: resume the device after WoWLAN, enabling the opmode to
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* talk to the WoWLAN image to get its status. This is optional, if not
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* implemented WoWLAN will not be supported. This callback may sleep.
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* @send_cmd:send a host command. Must return -ERFKILL if RFkill is asserted.
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* If RFkill is asserted in the middle of a SYNC host command, it must
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* return -ERFKILL straight away.
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* May sleep only if CMD_SYNC is set
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* @tx: send an skb
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* Must be atomic
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* @reclaim: free packet until ssn. Returns a list of freed packets.
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* Must be atomic
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* @txq_enable: setup a queue. To setup an AC queue, use the
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* iwl_trans_ac_txq_enable wrapper. fw_alive must have been called before
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* this one. The op_mode must not configure the HCMD queue. May sleep.
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* @txq_disable: de-configure a Tx queue to send AMPDUs
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* Must be atomic
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* @wait_tx_queue_empty: wait until all tx queues are empty
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* May sleep
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* @dbgfs_register: add the dbgfs files under this directory. Files will be
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* automatically deleted.
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* @write8: write a u8 to a register at offset ofs from the BAR
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* @write32: write a u32 to a register at offset ofs from the BAR
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* @read32: read a u32 register at offset ofs from the BAR
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* @read_prph: read a DWORD from a periphery register
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* @write_prph: write a DWORD to a periphery register
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* @read_mem: read device's SRAM in DWORD
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* @write_mem: write device's SRAM in DWORD. If %buf is %NULL, then the memory
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* will be zeroed.
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* @configure: configure parameters required by the transport layer from
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* the op_mode. May be called several times before start_fw, can't be
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* called after that.
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* @set_pmi: set the power pmi state
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* @grab_nic_access: wake the NIC to be able to access non-HBUS regs.
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* Sleeping is not allowed between grab_nic_access and
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* release_nic_access.
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* @release_nic_access: let the NIC go to sleep. The "flags" parameter
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* must be the same one that was sent before to the grab_nic_access.
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* @set_bits_mask - set SRAM register according to value and mask.
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*/
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struct iwl_trans_ops {
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int (*start_hw)(struct iwl_trans *iwl_trans);
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void (*stop_hw)(struct iwl_trans *iwl_trans, bool op_mode_leaving);
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int (*start_fw)(struct iwl_trans *trans, const struct fw_img *fw,
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bool run_in_rfkill);
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void (*fw_alive)(struct iwl_trans *trans, u32 scd_addr);
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void (*stop_device)(struct iwl_trans *trans);
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void (*d3_suspend)(struct iwl_trans *trans, bool test);
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int (*d3_resume)(struct iwl_trans *trans, enum iwl_d3_status *status,
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bool test);
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int (*send_cmd)(struct iwl_trans *trans, struct iwl_host_cmd *cmd);
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int (*tx)(struct iwl_trans *trans, struct sk_buff *skb,
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struct iwl_device_cmd *dev_cmd, int queue);
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void (*reclaim)(struct iwl_trans *trans, int queue, int ssn,
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struct sk_buff_head *skbs);
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void (*txq_enable)(struct iwl_trans *trans, int queue, int fifo,
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int sta_id, int tid, int frame_limit, u16 ssn);
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void (*txq_disable)(struct iwl_trans *trans, int queue);
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int (*dbgfs_register)(struct iwl_trans *trans, struct dentry* dir);
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int (*wait_tx_queue_empty)(struct iwl_trans *trans);
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void (*write8)(struct iwl_trans *trans, u32 ofs, u8 val);
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void (*write32)(struct iwl_trans *trans, u32 ofs, u32 val);
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u32 (*read32)(struct iwl_trans *trans, u32 ofs);
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u32 (*read_prph)(struct iwl_trans *trans, u32 ofs);
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void (*write_prph)(struct iwl_trans *trans, u32 ofs, u32 val);
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int (*read_mem)(struct iwl_trans *trans, u32 addr,
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void *buf, int dwords);
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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);
|
|
};
|
|
|
|
/**
|
|
* 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,
|
|
};
|
|
|
|
/**
|
|
* struct iwl_trans - transport common data
|
|
*
|
|
* @ops - pointer to iwl_trans_ops
|
|
* @op_mode - pointer to the op_mode
|
|
* @cfg - pointer to the configuration
|
|
* @dev - pointer to struct device * that represents the device
|
|
* @hw_id: a u32 with the ID of the device / subdevice.
|
|
* 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
|
|
* @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
|
|
*/
|
|
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;
|
|
|
|
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;
|
|
|
|
/* 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
|
|
|
|
/* 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)
|
|
{
|
|
might_sleep();
|
|
|
|
return trans->ops->start_hw(trans);
|
|
}
|
|
|
|
static inline void iwl_trans_stop_hw(struct iwl_trans *trans,
|
|
bool op_mode_leaving)
|
|
{
|
|
might_sleep();
|
|
|
|
trans->ops->stop_hw(trans, op_mode_leaving);
|
|
|
|
if (op_mode_leaving)
|
|
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);
|
|
|
|
return trans->ops->start_fw(trans, fw, run_in_rfkill);
|
|
}
|
|
|
|
static inline void iwl_trans_stop_device(struct iwl_trans *trans)
|
|
{
|
|
might_sleep();
|
|
|
|
trans->ops->stop_device(trans);
|
|
|
|
trans->state = IWL_TRANS_NO_FW;
|
|
}
|
|
|
|
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 int iwl_trans_send_cmd(struct iwl_trans *trans,
|
|
struct iwl_host_cmd *cmd)
|
|
{
|
|
int ret;
|
|
|
|
WARN_ONCE(trans->state != IWL_TRANS_FW_ALIVE,
|
|
"%s bad state = %d", __func__, trans->state);
|
|
|
|
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)
|
|
{
|
|
WARN_ONCE(trans->state != IWL_TRANS_FW_ALIVE,
|
|
"%s bad state = %d", __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)
|
|
{
|
|
WARN_ONCE(trans->state != IWL_TRANS_FW_ALIVE,
|
|
"%s bad state = %d", __func__, trans->state);
|
|
|
|
trans->ops->reclaim(trans, queue, ssn, skbs);
|
|
}
|
|
|
|
static inline void iwl_trans_txq_disable(struct iwl_trans *trans, int queue)
|
|
{
|
|
WARN_ONCE(trans->state != IWL_TRANS_FW_ALIVE,
|
|
"%s bad state = %d", __func__, trans->state);
|
|
|
|
trans->ops->txq_disable(trans, queue);
|
|
}
|
|
|
|
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)
|
|
{
|
|
might_sleep();
|
|
|
|
WARN_ONCE(trans->state != IWL_TRANS_FW_ALIVE,
|
|
"%s bad state = %d", __func__, trans->state);
|
|
|
|
trans->ops->txq_enable(trans, queue, fifo, sta_id, tid,
|
|
frame_limit, ssn);
|
|
}
|
|
|
|
static inline void iwl_trans_ac_txq_enable(struct iwl_trans *trans, int queue,
|
|
int fifo)
|
|
{
|
|
iwl_trans_txq_enable(trans, queue, fifo, -1,
|
|
IWL_MAX_TID_COUNT, IWL_FRAME_LIMIT, 0);
|
|
}
|
|
|
|
static inline int iwl_trans_wait_tx_queue_empty(struct iwl_trans *trans)
|
|
{
|
|
WARN_ONCE(trans->state != IWL_TRANS_FW_ALIVE,
|
|
"%s bad state = %d", __func__, trans->state);
|
|
|
|
return trans->ops->wait_tx_queue_empty(trans);
|
|
}
|
|
|
|
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)
|
|
{
|
|
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);
|
|
}
|
|
|
|
/*****************************************************
|
|
* 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__ */
|