2023-08-30 17:31:07 +02:00
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/*
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* Char device interface.
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*
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* Copyright (C) 2005-2007 Kristian Hoegsberg <krh@bitplanet.net>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#ifndef _LINUX_FIREWIRE_CDEV_H
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#define _LINUX_FIREWIRE_CDEV_H
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#include <linux/ioctl.h>
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#include <linux/types.h>
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#include <linux/firewire-constants.h>
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/* available since kernel version 2.6.22 */
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#define FW_CDEV_EVENT_BUS_RESET 0x00
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#define FW_CDEV_EVENT_RESPONSE 0x01
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#define FW_CDEV_EVENT_REQUEST 0x02
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#define FW_CDEV_EVENT_ISO_INTERRUPT 0x03
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/* available since kernel version 2.6.30 */
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#define FW_CDEV_EVENT_ISO_RESOURCE_ALLOCATED 0x04
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#define FW_CDEV_EVENT_ISO_RESOURCE_DEALLOCATED 0x05
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/* available since kernel version 2.6.36 */
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#define FW_CDEV_EVENT_REQUEST2 0x06
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#define FW_CDEV_EVENT_PHY_PACKET_SENT 0x07
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#define FW_CDEV_EVENT_PHY_PACKET_RECEIVED 0x08
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#define FW_CDEV_EVENT_ISO_INTERRUPT_MULTICHANNEL 0x09
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2023-10-24 12:59:35 +02:00
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/* available since kernel version 6.5 */
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#define FW_CDEV_EVENT_REQUEST3 0x0a
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#define FW_CDEV_EVENT_RESPONSE2 0x0b
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#define FW_CDEV_EVENT_PHY_PACKET_SENT2 0x0c
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#define FW_CDEV_EVENT_PHY_PACKET_RECEIVED2 0x0d
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2023-08-30 17:31:07 +02:00
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/**
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* struct fw_cdev_event_common - Common part of all fw_cdev_event_* types
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* @closure: For arbitrary use by userspace
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* @type: Discriminates the fw_cdev_event_* types
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*
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* This struct may be used to access generic members of all fw_cdev_event_*
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* types regardless of the specific type.
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*
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* Data passed in the @closure field for a request will be returned in the
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* corresponding event. It is big enough to hold a pointer on all platforms.
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* The ioctl used to set @closure depends on the @type of event.
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*/
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struct fw_cdev_event_common {
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__u64 closure;
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__u32 type;
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};
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/**
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* struct fw_cdev_event_bus_reset - Sent when a bus reset occurred
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* @closure: See &fw_cdev_event_common; set by %FW_CDEV_IOC_GET_INFO ioctl
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* @type: See &fw_cdev_event_common; always %FW_CDEV_EVENT_BUS_RESET
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* @node_id: New node ID of this node
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* @local_node_id: Node ID of the local node, i.e. of the controller
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* @bm_node_id: Node ID of the bus manager
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* @irm_node_id: Node ID of the iso resource manager
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* @root_node_id: Node ID of the root node
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* @generation: New bus generation
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*
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* This event is sent when the bus the device belongs to goes through a bus
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* reset. It provides information about the new bus configuration, such as
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* new node ID for this device, new root ID, and others.
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*
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* If @bm_node_id is 0xffff right after bus reset it can be reread by an
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* %FW_CDEV_IOC_GET_INFO ioctl after bus manager selection was finished.
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* Kernels with ABI version < 4 do not set @bm_node_id.
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*/
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struct fw_cdev_event_bus_reset {
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__u64 closure;
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__u32 type;
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__u32 node_id;
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__u32 local_node_id;
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__u32 bm_node_id;
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__u32 irm_node_id;
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__u32 root_node_id;
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__u32 generation;
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};
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/**
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* struct fw_cdev_event_response - Sent when a response packet was received
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* @closure: See &fw_cdev_event_common; set by %FW_CDEV_IOC_SEND_REQUEST
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* or %FW_CDEV_IOC_SEND_BROADCAST_REQUEST
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* or %FW_CDEV_IOC_SEND_STREAM_PACKET ioctl
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* @type: See &fw_cdev_event_common; always %FW_CDEV_EVENT_RESPONSE
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* @rcode: Response code returned by the remote node
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* @length: Data length, i.e. the response's payload size in bytes
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* @data: Payload data, if any
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*
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2023-10-24 12:59:35 +02:00
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* This event is sent instead of &fw_cdev_event_response if the kernel or the client implements
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* ABI version <= 5. It has the lack of time stamp field comparing to &fw_cdev_event_response2.
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*/
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struct fw_cdev_event_response {
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__u64 closure;
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__u32 type;
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__u32 rcode;
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__u32 length;
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__u32 data[];
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};
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/**
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* struct fw_cdev_event_response2 - Sent when a response packet was received
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* @closure: See &fw_cdev_event_common; set by %FW_CDEV_IOC_SEND_REQUEST
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* or %FW_CDEV_IOC_SEND_BROADCAST_REQUEST
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* or %FW_CDEV_IOC_SEND_STREAM_PACKET ioctl
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* @type: See &fw_cdev_event_common; always %FW_CDEV_EVENT_RESPONSE
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* @rcode: Response code returned by the remote node
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* @length: Data length, i.e. the response's payload size in bytes
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* @request_tstamp: The time stamp of isochronous cycle at which the request was sent.
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* @response_tstamp: The time stamp of isochronous cycle at which the response was sent.
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* @padding: Padding to keep the size of structure as multiples of 8 in various architectures
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* since 4 byte alignment is used for 8 byte of object type in System V ABI for i386
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* architecture.
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* @data: Payload data, if any
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*
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* This event is sent when the stack receives a response to an outgoing request
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* sent by %FW_CDEV_IOC_SEND_REQUEST ioctl. The payload data for responses
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* carrying data (read and lock responses) follows immediately and can be
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* accessed through the @data field.
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*
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* The event is also generated after conclusions of transactions that do not
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* involve response packets. This includes unified write transactions,
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* broadcast write transactions, and transmission of asynchronous stream
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* packets. @rcode indicates success or failure of such transmissions.
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*
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* The value of @request_tstamp expresses the isochronous cycle at which the request was sent to
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* initiate the transaction. The value of @response_tstamp expresses the isochronous cycle at which
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* the response arrived to complete the transaction. Each value is unsigned 16 bit integer
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* containing three low order bits of second field and all 13 bits of cycle field in format of
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* CYCLE_TIMER register.
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2023-08-30 17:31:07 +02:00
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*/
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2023-10-24 12:59:35 +02:00
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struct fw_cdev_event_response2 {
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2023-08-30 17:31:07 +02:00
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__u64 closure;
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__u32 type;
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__u32 rcode;
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__u32 length;
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2023-10-24 12:59:35 +02:00
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__u32 request_tstamp;
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__u32 response_tstamp;
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__u32 padding;
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2023-08-30 17:31:07 +02:00
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__u32 data[];
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};
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/**
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* struct fw_cdev_event_request - Old version of &fw_cdev_event_request2
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* @closure: See &fw_cdev_event_common; set by %FW_CDEV_IOC_ALLOCATE ioctl
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* @type: See &fw_cdev_event_common; always %FW_CDEV_EVENT_REQUEST
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* @tcode: Transaction code of the incoming request
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* @offset: The offset into the 48-bit per-node address space
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* @handle: Reference to the kernel-side pending request
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* @length: Data length, i.e. the request's payload size in bytes
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* @data: Incoming data, if any
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*
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* This event is sent instead of &fw_cdev_event_request2 if the kernel or
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* the client implements ABI version <= 3. &fw_cdev_event_request lacks
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* essential information; use &fw_cdev_event_request2 instead.
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*/
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struct fw_cdev_event_request {
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__u64 closure;
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__u32 type;
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__u32 tcode;
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__u64 offset;
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__u32 handle;
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__u32 length;
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__u32 data[];
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};
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/**
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* struct fw_cdev_event_request2 - Sent on incoming request to an address region
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* @closure: See &fw_cdev_event_common; set by %FW_CDEV_IOC_ALLOCATE ioctl
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* @type: See &fw_cdev_event_common; always %FW_CDEV_EVENT_REQUEST2
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* @tcode: Transaction code of the incoming request
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* @offset: The offset into the 48-bit per-node address space
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* @source_node_id: Sender node ID
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* @destination_node_id: Destination node ID
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* @card: The index of the card from which the request came
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* @generation: Bus generation in which the request is valid
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* @handle: Reference to the kernel-side pending request
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* @length: Data length, i.e. the request's payload size in bytes
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* @data: Incoming data, if any
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*
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2023-10-24 12:59:35 +02:00
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* This event is sent instead of &fw_cdev_event_request3 if the kernel or the client implements
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* ABI version <= 5. It has the lack of time stamp field comparing to &fw_cdev_event_request3.
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*/
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struct fw_cdev_event_request2 {
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__u64 closure;
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__u32 type;
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__u32 tcode;
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__u64 offset;
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__u32 source_node_id;
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__u32 destination_node_id;
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__u32 card;
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__u32 generation;
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__u32 handle;
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__u32 length;
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__u32 data[];
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};
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/**
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* struct fw_cdev_event_request3 - Sent on incoming request to an address region
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* @closure: See &fw_cdev_event_common; set by %FW_CDEV_IOC_ALLOCATE ioctl
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* @type: See &fw_cdev_event_common; always %FW_CDEV_EVENT_REQUEST2
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* @tcode: Transaction code of the incoming request
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* @offset: The offset into the 48-bit per-node address space
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* @source_node_id: Sender node ID
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* @destination_node_id: Destination node ID
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* @card: The index of the card from which the request came
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* @generation: Bus generation in which the request is valid
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* @handle: Reference to the kernel-side pending request
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* @length: Data length, i.e. the request's payload size in bytes
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* @tstamp: The time stamp of isochronous cycle at which the request arrived.
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* @padding: Padding to keep the size of structure as multiples of 8 in various architectures
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* since 4 byte alignment is used for 8 byte of object type in System V ABI for i386
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* architecture.
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* @data: Incoming data, if any
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*
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2023-08-30 17:31:07 +02:00
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* This event is sent when the stack receives an incoming request to an address
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* region registered using the %FW_CDEV_IOC_ALLOCATE ioctl. The request is
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* guaranteed to be completely contained in the specified region. Userspace is
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* responsible for sending the response by %FW_CDEV_IOC_SEND_RESPONSE ioctl,
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* using the same @handle.
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*
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* The payload data for requests carrying data (write and lock requests)
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* follows immediately and can be accessed through the @data field.
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*
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* Unlike &fw_cdev_event_request, @tcode of lock requests is one of the
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* firewire-core specific %TCODE_LOCK_MASK_SWAP...%TCODE_LOCK_VENDOR_DEPENDENT,
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* i.e. encodes the extended transaction code.
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*
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* @card may differ from &fw_cdev_get_info.card because requests are received
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* from all cards of the Linux host. @source_node_id, @destination_node_id, and
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* @generation pertain to that card. Destination node ID and bus generation may
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* therefore differ from the corresponding fields of the last
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* &fw_cdev_event_bus_reset.
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*
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* @destination_node_id may also differ from the current node ID because of a
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* non-local bus ID part or in case of a broadcast write request. Note, a
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* client must call an %FW_CDEV_IOC_SEND_RESPONSE ioctl even in case of a
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* broadcast write request; the kernel will then release the kernel-side pending
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* request but will not actually send a response packet.
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*
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* In case of a write request to FCP_REQUEST or FCP_RESPONSE, the kernel already
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* sent a write response immediately after the request was received; in this
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* case the client must still call an %FW_CDEV_IOC_SEND_RESPONSE ioctl to
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* release the kernel-side pending request, though another response won't be
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* sent.
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*
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* If the client subsequently needs to initiate requests to the sender node of
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* an &fw_cdev_event_request3, it needs to use a device file with matching
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2023-08-30 17:31:07 +02:00
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* card index, node ID, and generation for outbound requests.
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2023-10-24 12:59:35 +02:00
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*
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* @tstamp is isochronous cycle at which the request arrived. It is 16 bit integer value and the
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* higher 3 bits expresses three low order bits of second field in the format of CYCLE_TIME
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* register and the rest 13 bits expresses cycle field.
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2023-08-30 17:31:07 +02:00
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*/
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2023-10-24 12:59:35 +02:00
|
|
|
struct fw_cdev_event_request3 {
|
2023-08-30 17:31:07 +02:00
|
|
|
__u64 closure;
|
|
|
|
|
__u32 type;
|
|
|
|
|
__u32 tcode;
|
|
|
|
|
__u64 offset;
|
|
|
|
|
__u32 source_node_id;
|
|
|
|
|
__u32 destination_node_id;
|
|
|
|
|
__u32 card;
|
|
|
|
|
__u32 generation;
|
|
|
|
|
__u32 handle;
|
|
|
|
|
__u32 length;
|
2023-10-24 12:59:35 +02:00
|
|
|
__u32 tstamp;
|
|
|
|
|
__u32 padding;
|
2023-08-30 17:31:07 +02:00
|
|
|
__u32 data[];
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct fw_cdev_event_iso_interrupt - Sent when an iso packet was completed
|
|
|
|
|
* @closure: See &fw_cdev_event_common;
|
|
|
|
|
* set by %FW_CDEV_CREATE_ISO_CONTEXT ioctl
|
|
|
|
|
* @type: See &fw_cdev_event_common; always %FW_CDEV_EVENT_ISO_INTERRUPT
|
|
|
|
|
* @cycle: Cycle counter of the last completed packet
|
|
|
|
|
* @header_length: Total length of following headers, in bytes
|
|
|
|
|
* @header: Stripped headers, if any
|
|
|
|
|
*
|
|
|
|
|
* This event is sent when the controller has completed an &fw_cdev_iso_packet
|
|
|
|
|
* with the %FW_CDEV_ISO_INTERRUPT bit set, when explicitly requested with
|
|
|
|
|
* %FW_CDEV_IOC_FLUSH_ISO, or when there have been so many completed packets
|
|
|
|
|
* without the interrupt bit set that the kernel's internal buffer for @header
|
|
|
|
|
* is about to overflow. (In the last case, ABI versions < 5 drop header data
|
|
|
|
|
* up to the next interrupt packet.)
|
|
|
|
|
*
|
|
|
|
|
* Isochronous transmit events (context type %FW_CDEV_ISO_CONTEXT_TRANSMIT):
|
|
|
|
|
*
|
|
|
|
|
* In version 3 and some implementations of version 2 of the ABI, &header_length
|
|
|
|
|
* is a multiple of 4 and &header contains timestamps of all packets up until
|
|
|
|
|
* the interrupt packet. The format of the timestamps is as described below for
|
|
|
|
|
* isochronous reception. In version 1 of the ABI, &header_length was 0.
|
|
|
|
|
*
|
|
|
|
|
* Isochronous receive events (context type %FW_CDEV_ISO_CONTEXT_RECEIVE):
|
|
|
|
|
*
|
|
|
|
|
* The headers stripped of all packets up until and including the interrupt
|
|
|
|
|
* packet are returned in the @header field. The amount of header data per
|
|
|
|
|
* packet is as specified at iso context creation by
|
|
|
|
|
* &fw_cdev_create_iso_context.header_size.
|
|
|
|
|
*
|
|
|
|
|
* Hence, _interrupt.header_length / _context.header_size is the number of
|
|
|
|
|
* packets received in this interrupt event. The client can now iterate
|
|
|
|
|
* through the mmap()'ed DMA buffer according to this number of packets and
|
|
|
|
|
* to the buffer sizes as the client specified in &fw_cdev_queue_iso.
|
|
|
|
|
*
|
|
|
|
|
* Since version 2 of this ABI, the portion for each packet in _interrupt.header
|
|
|
|
|
* consists of the 1394 isochronous packet header, followed by a timestamp
|
|
|
|
|
* quadlet if &fw_cdev_create_iso_context.header_size > 4, followed by quadlets
|
|
|
|
|
* from the packet payload if &fw_cdev_create_iso_context.header_size > 8.
|
|
|
|
|
*
|
|
|
|
|
* Format of 1394 iso packet header: 16 bits data_length, 2 bits tag, 6 bits
|
|
|
|
|
* channel, 4 bits tcode, 4 bits sy, in big endian byte order.
|
|
|
|
|
* data_length is the actual received size of the packet without the four
|
|
|
|
|
* 1394 iso packet header bytes.
|
|
|
|
|
*
|
|
|
|
|
* Format of timestamp: 16 bits invalid, 3 bits cycleSeconds, 13 bits
|
|
|
|
|
* cycleCount, in big endian byte order.
|
|
|
|
|
*
|
|
|
|
|
* In version 1 of the ABI, no timestamp quadlet was inserted; instead, payload
|
|
|
|
|
* data followed directly after the 1394 is header if header_size > 4.
|
|
|
|
|
* Behaviour of ver. 1 of this ABI is no longer available since ABI ver. 2.
|
|
|
|
|
*/
|
|
|
|
|
struct fw_cdev_event_iso_interrupt {
|
|
|
|
|
__u64 closure;
|
|
|
|
|
__u32 type;
|
|
|
|
|
__u32 cycle;
|
|
|
|
|
__u32 header_length;
|
|
|
|
|
__u32 header[];
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct fw_cdev_event_iso_interrupt_mc - An iso buffer chunk was completed
|
|
|
|
|
* @closure: See &fw_cdev_event_common;
|
|
|
|
|
* set by %FW_CDEV_CREATE_ISO_CONTEXT ioctl
|
|
|
|
|
* @type: %FW_CDEV_EVENT_ISO_INTERRUPT_MULTICHANNEL
|
|
|
|
|
* @completed: Offset into the receive buffer; data before this offset is valid
|
|
|
|
|
*
|
|
|
|
|
* This event is sent in multichannel contexts (context type
|
|
|
|
|
* %FW_CDEV_ISO_CONTEXT_RECEIVE_MULTICHANNEL) for &fw_cdev_iso_packet buffer
|
|
|
|
|
* chunks that have been completely filled and that have the
|
|
|
|
|
* %FW_CDEV_ISO_INTERRUPT bit set, or when explicitly requested with
|
|
|
|
|
* %FW_CDEV_IOC_FLUSH_ISO.
|
|
|
|
|
*
|
|
|
|
|
* The buffer is continuously filled with the following data, per packet:
|
|
|
|
|
* - the 1394 iso packet header as described at &fw_cdev_event_iso_interrupt,
|
|
|
|
|
* but in little endian byte order,
|
|
|
|
|
* - packet payload (as many bytes as specified in the data_length field of
|
|
|
|
|
* the 1394 iso packet header) in big endian byte order,
|
|
|
|
|
* - 0...3 padding bytes as needed to align the following trailer quadlet,
|
|
|
|
|
* - trailer quadlet, containing the reception timestamp as described at
|
|
|
|
|
* &fw_cdev_event_iso_interrupt, but in little endian byte order.
|
|
|
|
|
*
|
|
|
|
|
* Hence the per-packet size is data_length (rounded up to a multiple of 4) + 8.
|
|
|
|
|
* When processing the data, stop before a packet that would cross the
|
|
|
|
|
* @completed offset.
|
|
|
|
|
*
|
|
|
|
|
* A packet near the end of a buffer chunk will typically spill over into the
|
|
|
|
|
* next queued buffer chunk. It is the responsibility of the client to check
|
|
|
|
|
* for this condition, assemble a broken-up packet from its parts, and not to
|
|
|
|
|
* re-queue any buffer chunks in which as yet unread packet parts reside.
|
|
|
|
|
*/
|
|
|
|
|
struct fw_cdev_event_iso_interrupt_mc {
|
|
|
|
|
__u64 closure;
|
|
|
|
|
__u32 type;
|
|
|
|
|
__u32 completed;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct fw_cdev_event_iso_resource - Iso resources were allocated or freed
|
|
|
|
|
* @closure: See &fw_cdev_event_common;
|
|
|
|
|
* set by``FW_CDEV_IOC_(DE)ALLOCATE_ISO_RESOURCE(_ONCE)`` ioctl
|
|
|
|
|
* @type: %FW_CDEV_EVENT_ISO_RESOURCE_ALLOCATED or
|
|
|
|
|
* %FW_CDEV_EVENT_ISO_RESOURCE_DEALLOCATED
|
|
|
|
|
* @handle: Reference by which an allocated resource can be deallocated
|
|
|
|
|
* @channel: Isochronous channel which was (de)allocated, if any
|
|
|
|
|
* @bandwidth: Bandwidth allocation units which were (de)allocated, if any
|
|
|
|
|
*
|
|
|
|
|
* An %FW_CDEV_EVENT_ISO_RESOURCE_ALLOCATED event is sent after an isochronous
|
|
|
|
|
* resource was allocated at the IRM. The client has to check @channel and
|
|
|
|
|
* @bandwidth for whether the allocation actually succeeded.
|
|
|
|
|
*
|
|
|
|
|
* An %FW_CDEV_EVENT_ISO_RESOURCE_DEALLOCATED event is sent after an isochronous
|
|
|
|
|
* resource was deallocated at the IRM. It is also sent when automatic
|
|
|
|
|
* reallocation after a bus reset failed.
|
|
|
|
|
*
|
|
|
|
|
* @channel is <0 if no channel was (de)allocated or if reallocation failed.
|
|
|
|
|
* @bandwidth is 0 if no bandwidth was (de)allocated or if reallocation failed.
|
|
|
|
|
*/
|
|
|
|
|
struct fw_cdev_event_iso_resource {
|
|
|
|
|
__u64 closure;
|
|
|
|
|
__u32 type;
|
|
|
|
|
__u32 handle;
|
|
|
|
|
__s32 channel;
|
|
|
|
|
__s32 bandwidth;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct fw_cdev_event_phy_packet - A PHY packet was transmitted or received
|
|
|
|
|
* @closure: See &fw_cdev_event_common; set by %FW_CDEV_IOC_SEND_PHY_PACKET
|
|
|
|
|
* or %FW_CDEV_IOC_RECEIVE_PHY_PACKETS ioctl
|
|
|
|
|
* @type: %FW_CDEV_EVENT_PHY_PACKET_SENT or %..._RECEIVED
|
|
|
|
|
* @rcode: %RCODE_..., indicates success or failure of transmission
|
|
|
|
|
* @length: Data length in bytes
|
2023-10-24 12:59:35 +02:00
|
|
|
* @data: Incoming data for %FW_CDEV_IOC_RECEIVE_PHY_PACKETS. For %FW_CDEV_IOC_SEND_PHY_PACKET
|
|
|
|
|
* the field has the same data in the request, thus the length of 8 bytes.
|
|
|
|
|
*
|
|
|
|
|
* This event is sent instead of &fw_cdev_event_phy_packet2 if the kernel or
|
|
|
|
|
* the client implements ABI version <= 5. It has the lack of time stamp field comparing to
|
|
|
|
|
* &fw_cdev_event_phy_packet2.
|
|
|
|
|
*/
|
|
|
|
|
struct fw_cdev_event_phy_packet {
|
|
|
|
|
__u64 closure;
|
|
|
|
|
__u32 type;
|
|
|
|
|
__u32 rcode;
|
|
|
|
|
__u32 length;
|
|
|
|
|
__u32 data[];
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct fw_cdev_event_phy_packet2 - A PHY packet was transmitted or received with time stamp.
|
|
|
|
|
* @closure: See &fw_cdev_event_common; set by %FW_CDEV_IOC_SEND_PHY_PACKET
|
|
|
|
|
* or %FW_CDEV_IOC_RECEIVE_PHY_PACKETS ioctl
|
|
|
|
|
* @type: %FW_CDEV_EVENT_PHY_PACKET_SENT2 or %FW_CDEV_EVENT_PHY_PACKET_RECEIVED2
|
|
|
|
|
* @rcode: %RCODE_..., indicates success or failure of transmission
|
|
|
|
|
* @length: Data length in bytes
|
|
|
|
|
* @tstamp: For %FW_CDEV_EVENT_PHY_PACKET_RECEIVED2, the time stamp of isochronous cycle at
|
|
|
|
|
* which the packet arrived. For %FW_CDEV_EVENT_PHY_PACKET_SENT2 and non-ping packet,
|
|
|
|
|
* the time stamp of isochronous cycle at which the packet was sent. For ping packet,
|
|
|
|
|
* the tick count for round-trip time measured by 1394 OHCI controller.
|
|
|
|
|
* The time stamp of isochronous cycle at which either the response was sent for
|
|
|
|
|
* %FW_CDEV_EVENT_PHY_PACKET_SENT2 or the request arrived for
|
|
|
|
|
* %FW_CDEV_EVENT_PHY_PACKET_RECEIVED2.
|
2023-08-30 17:31:07 +02:00
|
|
|
* @data: Incoming data
|
|
|
|
|
*
|
2023-10-24 12:59:35 +02:00
|
|
|
* If @type is %FW_CDEV_EVENT_PHY_PACKET_SENT2, @length is 8 and @data consists of the two PHY
|
|
|
|
|
* packet quadlets to be sent, in host byte order,
|
2023-08-30 17:31:07 +02:00
|
|
|
*
|
2023-10-24 12:59:35 +02:00
|
|
|
* If @type is %FW_CDEV_EVENT_PHY_PACKET_RECEIVED2, @length is 8 and @data consists of the two PHY
|
|
|
|
|
* packet quadlets, in host byte order.
|
|
|
|
|
*
|
|
|
|
|
* For %FW_CDEV_EVENT_PHY_PACKET_RECEIVED2, the @tstamp is the isochronous cycle at which the
|
|
|
|
|
* packet arrived. It is 16 bit integer value and the higher 3 bits expresses three low order bits
|
|
|
|
|
* of second field and the rest 13 bits expresses cycle field in the format of CYCLE_TIME register.
|
|
|
|
|
*
|
|
|
|
|
* For %FW_CDEV_EVENT_PHY_PACKET_SENT2, the @tstamp has different meanings whether to sent the
|
|
|
|
|
* packet for ping or not. If it's not for ping, the @tstamp is the isochronous cycle at which the
|
|
|
|
|
* packet was sent, and use the same format as the case of %FW_CDEV_EVENT_PHY_PACKET_SENT2. If it's
|
|
|
|
|
* for ping, the @tstamp is for round-trip time measured by 1394 OHCI controller with 42.195 MHz
|
|
|
|
|
* resolution.
|
2023-08-30 17:31:07 +02:00
|
|
|
*/
|
2023-10-24 12:59:35 +02:00
|
|
|
struct fw_cdev_event_phy_packet2 {
|
2023-08-30 17:31:07 +02:00
|
|
|
__u64 closure;
|
|
|
|
|
__u32 type;
|
|
|
|
|
__u32 rcode;
|
|
|
|
|
__u32 length;
|
2023-10-24 12:59:35 +02:00
|
|
|
__u32 tstamp;
|
2023-08-30 17:31:07 +02:00
|
|
|
__u32 data[];
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* union fw_cdev_event - Convenience union of fw_cdev_event_* types
|
|
|
|
|
* @common: Valid for all types
|
|
|
|
|
* @bus_reset: Valid if @common.type == %FW_CDEV_EVENT_BUS_RESET
|
|
|
|
|
* @response: Valid if @common.type == %FW_CDEV_EVENT_RESPONSE
|
|
|
|
|
* @request: Valid if @common.type == %FW_CDEV_EVENT_REQUEST
|
|
|
|
|
* @request2: Valid if @common.type == %FW_CDEV_EVENT_REQUEST2
|
|
|
|
|
* @iso_interrupt: Valid if @common.type == %FW_CDEV_EVENT_ISO_INTERRUPT
|
|
|
|
|
* @iso_interrupt_mc: Valid if @common.type ==
|
|
|
|
|
* %FW_CDEV_EVENT_ISO_INTERRUPT_MULTICHANNEL
|
|
|
|
|
* @iso_resource: Valid if @common.type ==
|
|
|
|
|
* %FW_CDEV_EVENT_ISO_RESOURCE_ALLOCATED or
|
|
|
|
|
* %FW_CDEV_EVENT_ISO_RESOURCE_DEALLOCATED
|
|
|
|
|
* @phy_packet: Valid if @common.type ==
|
|
|
|
|
* %FW_CDEV_EVENT_PHY_PACKET_SENT or
|
|
|
|
|
* %FW_CDEV_EVENT_PHY_PACKET_RECEIVED
|
|
|
|
|
*
|
2023-10-24 12:59:35 +02:00
|
|
|
* @request3: Valid if @common.type == %FW_CDEV_EVENT_REQUEST3
|
|
|
|
|
* @response2: Valid if @common.type == %FW_CDEV_EVENT_RESPONSE2
|
|
|
|
|
* @phy_packet2: Valid if @common.type == %FW_CDEV_EVENT_PHY_PACKET_SENT2 or
|
|
|
|
|
* %FW_CDEV_EVENT_PHY_PACKET_RECEIVED2
|
|
|
|
|
*
|
2023-08-30 17:31:07 +02:00
|
|
|
* Convenience union for userspace use. Events could be read(2) into an
|
|
|
|
|
* appropriately aligned char buffer and then cast to this union for further
|
|
|
|
|
* processing. Note that for a request, response or iso_interrupt event,
|
|
|
|
|
* the data[] or header[] may make the size of the full event larger than
|
|
|
|
|
* sizeof(union fw_cdev_event). Also note that if you attempt to read(2)
|
|
|
|
|
* an event into a buffer that is not large enough for it, the data that does
|
|
|
|
|
* not fit will be discarded so that the next read(2) will return a new event.
|
|
|
|
|
*/
|
|
|
|
|
union fw_cdev_event {
|
|
|
|
|
struct fw_cdev_event_common common;
|
|
|
|
|
struct fw_cdev_event_bus_reset bus_reset;
|
|
|
|
|
struct fw_cdev_event_response response;
|
|
|
|
|
struct fw_cdev_event_request request;
|
|
|
|
|
struct fw_cdev_event_request2 request2; /* added in 2.6.36 */
|
|
|
|
|
struct fw_cdev_event_iso_interrupt iso_interrupt;
|
|
|
|
|
struct fw_cdev_event_iso_interrupt_mc iso_interrupt_mc; /* added in 2.6.36 */
|
|
|
|
|
struct fw_cdev_event_iso_resource iso_resource; /* added in 2.6.30 */
|
|
|
|
|
struct fw_cdev_event_phy_packet phy_packet; /* added in 2.6.36 */
|
2023-10-24 12:59:35 +02:00
|
|
|
struct fw_cdev_event_request3 request3; /* added in 6.5 */
|
|
|
|
|
struct fw_cdev_event_response2 response2; /* added in 6.5 */
|
|
|
|
|
struct fw_cdev_event_phy_packet2 phy_packet2; /* added in 6.5 */
|
2023-08-30 17:31:07 +02:00
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/* available since kernel version 2.6.22 */
|
|
|
|
|
#define FW_CDEV_IOC_GET_INFO _IOWR('#', 0x00, struct fw_cdev_get_info)
|
|
|
|
|
#define FW_CDEV_IOC_SEND_REQUEST _IOW('#', 0x01, struct fw_cdev_send_request)
|
|
|
|
|
#define FW_CDEV_IOC_ALLOCATE _IOWR('#', 0x02, struct fw_cdev_allocate)
|
|
|
|
|
#define FW_CDEV_IOC_DEALLOCATE _IOW('#', 0x03, struct fw_cdev_deallocate)
|
|
|
|
|
#define FW_CDEV_IOC_SEND_RESPONSE _IOW('#', 0x04, struct fw_cdev_send_response)
|
|
|
|
|
#define FW_CDEV_IOC_INITIATE_BUS_RESET _IOW('#', 0x05, struct fw_cdev_initiate_bus_reset)
|
|
|
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#define FW_CDEV_IOC_ADD_DESCRIPTOR _IOWR('#', 0x06, struct fw_cdev_add_descriptor)
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#define FW_CDEV_IOC_REMOVE_DESCRIPTOR _IOW('#', 0x07, struct fw_cdev_remove_descriptor)
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#define FW_CDEV_IOC_CREATE_ISO_CONTEXT _IOWR('#', 0x08, struct fw_cdev_create_iso_context)
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#define FW_CDEV_IOC_QUEUE_ISO _IOWR('#', 0x09, struct fw_cdev_queue_iso)
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#define FW_CDEV_IOC_START_ISO _IOW('#', 0x0a, struct fw_cdev_start_iso)
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#define FW_CDEV_IOC_STOP_ISO _IOW('#', 0x0b, struct fw_cdev_stop_iso)
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|
/* available since kernel version 2.6.24 */
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|
#define FW_CDEV_IOC_GET_CYCLE_TIMER _IOR('#', 0x0c, struct fw_cdev_get_cycle_timer)
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/* available since kernel version 2.6.30 */
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#define FW_CDEV_IOC_ALLOCATE_ISO_RESOURCE _IOWR('#', 0x0d, struct fw_cdev_allocate_iso_resource)
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#define FW_CDEV_IOC_DEALLOCATE_ISO_RESOURCE _IOW('#', 0x0e, struct fw_cdev_deallocate)
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#define FW_CDEV_IOC_ALLOCATE_ISO_RESOURCE_ONCE _IOW('#', 0x0f, struct fw_cdev_allocate_iso_resource)
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#define FW_CDEV_IOC_DEALLOCATE_ISO_RESOURCE_ONCE _IOW('#', 0x10, struct fw_cdev_allocate_iso_resource)
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#define FW_CDEV_IOC_GET_SPEED _IO('#', 0x11) /* returns speed code */
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|
#define FW_CDEV_IOC_SEND_BROADCAST_REQUEST _IOW('#', 0x12, struct fw_cdev_send_request)
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#define FW_CDEV_IOC_SEND_STREAM_PACKET _IOW('#', 0x13, struct fw_cdev_send_stream_packet)
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|
/* available since kernel version 2.6.34 */
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|
#define FW_CDEV_IOC_GET_CYCLE_TIMER2 _IOWR('#', 0x14, struct fw_cdev_get_cycle_timer2)
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|
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/* available since kernel version 2.6.36 */
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#define FW_CDEV_IOC_SEND_PHY_PACKET _IOWR('#', 0x15, struct fw_cdev_send_phy_packet)
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#define FW_CDEV_IOC_RECEIVE_PHY_PACKETS _IOW('#', 0x16, struct fw_cdev_receive_phy_packets)
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#define FW_CDEV_IOC_SET_ISO_CHANNELS _IOW('#', 0x17, struct fw_cdev_set_iso_channels)
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|
/* available since kernel version 3.4 */
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|
#define FW_CDEV_IOC_FLUSH_ISO _IOW('#', 0x18, struct fw_cdev_flush_iso)
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/*
|
|
|
|
|
* ABI version history
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|
|
|
* 1 (2.6.22) - initial version
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|
|
* (2.6.24) - added %FW_CDEV_IOC_GET_CYCLE_TIMER
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|
|
* 2 (2.6.30) - changed &fw_cdev_event_iso_interrupt.header if
|
|
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|
|
* &fw_cdev_create_iso_context.header_size is 8 or more
|
|
|
|
|
* - added %FW_CDEV_IOC_*_ISO_RESOURCE*,
|
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|
|
* %FW_CDEV_IOC_GET_SPEED, %FW_CDEV_IOC_SEND_BROADCAST_REQUEST,
|
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|
|
* %FW_CDEV_IOC_SEND_STREAM_PACKET
|
|
|
|
|
* (2.6.32) - added time stamp to xmit &fw_cdev_event_iso_interrupt
|
|
|
|
|
* (2.6.33) - IR has always packet-per-buffer semantics now, not one of
|
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|
|
|
* dual-buffer or packet-per-buffer depending on hardware
|
|
|
|
|
* - shared use and auto-response for FCP registers
|
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|
|
|
* 3 (2.6.34) - made &fw_cdev_get_cycle_timer reliable
|
|
|
|
|
* - added %FW_CDEV_IOC_GET_CYCLE_TIMER2
|
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|
|
|
* 4 (2.6.36) - added %FW_CDEV_EVENT_REQUEST2, %FW_CDEV_EVENT_PHY_PACKET_*,
|
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|
|
|
* and &fw_cdev_allocate.region_end
|
|
|
|
|
* - implemented &fw_cdev_event_bus_reset.bm_node_id
|
|
|
|
|
* - added %FW_CDEV_IOC_SEND_PHY_PACKET, _RECEIVE_PHY_PACKETS
|
|
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|
|
* - added %FW_CDEV_EVENT_ISO_INTERRUPT_MULTICHANNEL,
|
|
|
|
|
* %FW_CDEV_ISO_CONTEXT_RECEIVE_MULTICHANNEL, and
|
|
|
|
|
* %FW_CDEV_IOC_SET_ISO_CHANNELS
|
|
|
|
|
* 5 (3.4) - send %FW_CDEV_EVENT_ISO_INTERRUPT events when needed to
|
|
|
|
|
* avoid dropping data
|
|
|
|
|
* - added %FW_CDEV_IOC_FLUSH_ISO
|
2023-10-24 12:59:35 +02:00
|
|
|
* 6 (6.5) - added some event for subactions of asynchronous transaction with time stamp
|
|
|
|
|
* - %FW_CDEV_EVENT_REQUEST3
|
|
|
|
|
* - %FW_CDEV_EVENT_RESPONSE2
|
|
|
|
|
* - %FW_CDEV_EVENT_PHY_PACKET_SENT2
|
|
|
|
|
* - %FW_CDEV_EVENT_PHY_PACKET_RECEIVED2
|
2023-08-30 17:31:07 +02:00
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct fw_cdev_get_info - General purpose information ioctl
|
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|
|
|
* @version: The version field is just a running serial number. Both an
|
|
|
|
|
* input parameter (ABI version implemented by the client) and
|
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|
|
|
* output parameter (ABI version implemented by the kernel).
|
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|
|
|
* A client shall fill in the ABI @version for which the client
|
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|
|
* was implemented. This is necessary for forward compatibility.
|
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|
|
* @rom_length: If @rom is non-zero, up to @rom_length bytes of Configuration
|
|
|
|
|
* ROM will be copied into that user space address. In either
|
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|
|
|
* case, @rom_length is updated with the actual length of the
|
|
|
|
|
* Configuration ROM.
|
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|
|
|
* @rom: If non-zero, address of a buffer to be filled by a copy of the
|
|
|
|
|
* device's Configuration ROM
|
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|
|
|
* @bus_reset: If non-zero, address of a buffer to be filled by a
|
|
|
|
|
* &struct fw_cdev_event_bus_reset with the current state
|
|
|
|
|
* of the bus. This does not cause a bus reset to happen.
|
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|
|
|
* @bus_reset_closure: Value of &closure in this and subsequent bus reset events
|
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|
|
|
* @card: The index of the card this device belongs to
|
|
|
|
|
*
|
|
|
|
|
* The %FW_CDEV_IOC_GET_INFO ioctl is usually the very first one which a client
|
|
|
|
|
* performs right after it opened a /dev/fw* file.
|
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|
|
|
*
|
|
|
|
|
* As a side effect, reception of %FW_CDEV_EVENT_BUS_RESET events to be read(2)
|
|
|
|
|
* is started by this ioctl.
|
|
|
|
|
*/
|
|
|
|
|
struct fw_cdev_get_info {
|
|
|
|
|
__u32 version;
|
|
|
|
|
__u32 rom_length;
|
|
|
|
|
__u64 rom;
|
|
|
|
|
__u64 bus_reset;
|
|
|
|
|
__u64 bus_reset_closure;
|
|
|
|
|
__u32 card;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct fw_cdev_send_request - Send an asynchronous request packet
|
|
|
|
|
* @tcode: Transaction code of the request
|
|
|
|
|
* @length: Length of outgoing payload, in bytes
|
|
|
|
|
* @offset: 48-bit offset at destination node
|
|
|
|
|
* @closure: Passed back to userspace in the response event
|
|
|
|
|
* @data: Userspace pointer to payload
|
|
|
|
|
* @generation: The bus generation where packet is valid
|
|
|
|
|
*
|
2023-10-24 12:59:35 +02:00
|
|
|
* Send a request to the device. This ioctl implements all outgoing requests. Both quadlet and
|
|
|
|
|
* block request specify the payload as a pointer to the data in the @data field. Once the
|
|
|
|
|
* transaction completes, the kernel writes either &fw_cdev_event_response event or
|
|
|
|
|
* &fw_cdev_event_response event back. The @closure field is passed back to user space in the
|
|
|
|
|
* response event.
|
2023-08-30 17:31:07 +02:00
|
|
|
*/
|
|
|
|
|
struct fw_cdev_send_request {
|
|
|
|
|
__u32 tcode;
|
|
|
|
|
__u32 length;
|
|
|
|
|
__u64 offset;
|
|
|
|
|
__u64 closure;
|
|
|
|
|
__u64 data;
|
|
|
|
|
__u32 generation;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct fw_cdev_send_response - Send an asynchronous response packet
|
|
|
|
|
* @rcode: Response code as determined by the userspace handler
|
|
|
|
|
* @length: Length of outgoing payload, in bytes
|
|
|
|
|
* @data: Userspace pointer to payload
|
|
|
|
|
* @handle: The handle from the &fw_cdev_event_request
|
|
|
|
|
*
|
|
|
|
|
* Send a response to an incoming request. By setting up an address range using
|
|
|
|
|
* the %FW_CDEV_IOC_ALLOCATE ioctl, userspace can listen for incoming requests. An
|
|
|
|
|
* incoming request will generate an %FW_CDEV_EVENT_REQUEST, and userspace must
|
|
|
|
|
* send a reply using this ioctl. The event has a handle to the kernel-side
|
|
|
|
|
* pending transaction, which should be used with this ioctl.
|
|
|
|
|
*/
|
|
|
|
|
struct fw_cdev_send_response {
|
|
|
|
|
__u32 rcode;
|
|
|
|
|
__u32 length;
|
|
|
|
|
__u64 data;
|
|
|
|
|
__u32 handle;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct fw_cdev_allocate - Allocate a CSR in an address range
|
|
|
|
|
* @offset: Start offset of the address range
|
|
|
|
|
* @closure: To be passed back to userspace in request events
|
|
|
|
|
* @length: Length of the CSR, in bytes
|
|
|
|
|
* @handle: Handle to the allocation, written by the kernel
|
|
|
|
|
* @region_end: First address above the address range (added in ABI v4, 2.6.36)
|
|
|
|
|
*
|
|
|
|
|
* Allocate an address range in the 48-bit address space on the local node
|
|
|
|
|
* (the controller). This allows userspace to listen for requests with an
|
|
|
|
|
* offset within that address range. Every time when the kernel receives a
|
|
|
|
|
* request within the range, an &fw_cdev_event_request2 event will be emitted.
|
|
|
|
|
* (If the kernel or the client implements ABI version <= 3, an
|
|
|
|
|
* &fw_cdev_event_request will be generated instead.)
|
|
|
|
|
*
|
|
|
|
|
* The @closure field is passed back to userspace in these request events.
|
|
|
|
|
* The @handle field is an out parameter, returning a handle to the allocated
|
|
|
|
|
* range to be used for later deallocation of the range.
|
|
|
|
|
*
|
|
|
|
|
* The address range is allocated on all local nodes. The address allocation
|
|
|
|
|
* is exclusive except for the FCP command and response registers. If an
|
|
|
|
|
* exclusive address region is already in use, the ioctl fails with errno set
|
|
|
|
|
* to %EBUSY.
|
|
|
|
|
*
|
|
|
|
|
* If kernel and client implement ABI version >= 4, the kernel looks up a free
|
|
|
|
|
* spot of size @length inside [@offset..@region_end) and, if found, writes
|
|
|
|
|
* the start address of the new CSR back in @offset. I.e. @offset is an
|
|
|
|
|
* in and out parameter. If this automatic placement of a CSR in a bigger
|
|
|
|
|
* address range is not desired, the client simply needs to set @region_end
|
|
|
|
|
* = @offset + @length.
|
|
|
|
|
*
|
|
|
|
|
* If the kernel or the client implements ABI version <= 3, @region_end is
|
|
|
|
|
* ignored and effectively assumed to be @offset + @length.
|
|
|
|
|
*
|
|
|
|
|
* @region_end is only present in a kernel header >= 2.6.36. If necessary,
|
|
|
|
|
* this can for example be tested by #ifdef FW_CDEV_EVENT_REQUEST2.
|
|
|
|
|
*/
|
|
|
|
|
struct fw_cdev_allocate {
|
|
|
|
|
__u64 offset;
|
|
|
|
|
__u64 closure;
|
|
|
|
|
__u32 length;
|
|
|
|
|
__u32 handle;
|
|
|
|
|
__u64 region_end; /* available since kernel version 2.6.36 */
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct fw_cdev_deallocate - Free a CSR address range or isochronous resource
|
|
|
|
|
* @handle: Handle to the address range or iso resource, as returned by the
|
|
|
|
|
* kernel when the range or resource was allocated
|
|
|
|
|
*/
|
|
|
|
|
struct fw_cdev_deallocate {
|
|
|
|
|
__u32 handle;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
#define FW_CDEV_LONG_RESET 0
|
|
|
|
|
#define FW_CDEV_SHORT_RESET 1
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct fw_cdev_initiate_bus_reset - Initiate a bus reset
|
|
|
|
|
* @type: %FW_CDEV_SHORT_RESET or %FW_CDEV_LONG_RESET
|
|
|
|
|
*
|
|
|
|
|
* Initiate a bus reset for the bus this device is on. The bus reset can be
|
|
|
|
|
* either the original (long) bus reset or the arbitrated (short) bus reset
|
|
|
|
|
* introduced in 1394a-2000.
|
|
|
|
|
*
|
|
|
|
|
* The ioctl returns immediately. A subsequent &fw_cdev_event_bus_reset
|
|
|
|
|
* indicates when the reset actually happened. Since ABI v4, this may be
|
|
|
|
|
* considerably later than the ioctl because the kernel ensures a grace period
|
|
|
|
|
* between subsequent bus resets as per IEEE 1394 bus management specification.
|
|
|
|
|
*/
|
|
|
|
|
struct fw_cdev_initiate_bus_reset {
|
|
|
|
|
__u32 type;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct fw_cdev_add_descriptor - Add contents to the local node's config ROM
|
|
|
|
|
* @immediate: If non-zero, immediate key to insert before pointer
|
|
|
|
|
* @key: Upper 8 bits of root directory pointer
|
|
|
|
|
* @data: Userspace pointer to contents of descriptor block
|
|
|
|
|
* @length: Length of descriptor block data, in quadlets
|
|
|
|
|
* @handle: Handle to the descriptor, written by the kernel
|
|
|
|
|
*
|
|
|
|
|
* Add a descriptor block and optionally a preceding immediate key to the local
|
|
|
|
|
* node's Configuration ROM.
|
|
|
|
|
*
|
|
|
|
|
* The @key field specifies the upper 8 bits of the descriptor root directory
|
|
|
|
|
* pointer and the @data and @length fields specify the contents. The @key
|
|
|
|
|
* should be of the form 0xXX000000. The offset part of the root directory entry
|
|
|
|
|
* will be filled in by the kernel.
|
|
|
|
|
*
|
|
|
|
|
* If not 0, the @immediate field specifies an immediate key which will be
|
|
|
|
|
* inserted before the root directory pointer.
|
|
|
|
|
*
|
|
|
|
|
* @immediate, @key, and @data array elements are CPU-endian quadlets.
|
|
|
|
|
*
|
|
|
|
|
* If successful, the kernel adds the descriptor and writes back a @handle to
|
|
|
|
|
* the kernel-side object to be used for later removal of the descriptor block
|
|
|
|
|
* and immediate key. The kernel will also generate a bus reset to signal the
|
|
|
|
|
* change of the Configuration ROM to other nodes.
|
|
|
|
|
*
|
|
|
|
|
* This ioctl affects the Configuration ROMs of all local nodes.
|
|
|
|
|
* The ioctl only succeeds on device files which represent a local node.
|
|
|
|
|
*/
|
|
|
|
|
struct fw_cdev_add_descriptor {
|
|
|
|
|
__u32 immediate;
|
|
|
|
|
__u32 key;
|
|
|
|
|
__u64 data;
|
|
|
|
|
__u32 length;
|
|
|
|
|
__u32 handle;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct fw_cdev_remove_descriptor - Remove contents from the Configuration ROM
|
|
|
|
|
* @handle: Handle to the descriptor, as returned by the kernel when the
|
|
|
|
|
* descriptor was added
|
|
|
|
|
*
|
|
|
|
|
* Remove a descriptor block and accompanying immediate key from the local
|
|
|
|
|
* nodes' Configuration ROMs. The kernel will also generate a bus reset to
|
|
|
|
|
* signal the change of the Configuration ROM to other nodes.
|
|
|
|
|
*/
|
|
|
|
|
struct fw_cdev_remove_descriptor {
|
|
|
|
|
__u32 handle;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
#define FW_CDEV_ISO_CONTEXT_TRANSMIT 0
|
|
|
|
|
#define FW_CDEV_ISO_CONTEXT_RECEIVE 1
|
|
|
|
|
#define FW_CDEV_ISO_CONTEXT_RECEIVE_MULTICHANNEL 2 /* added in 2.6.36 */
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct fw_cdev_create_iso_context - Create a context for isochronous I/O
|
|
|
|
|
* @type: %FW_CDEV_ISO_CONTEXT_TRANSMIT or %FW_CDEV_ISO_CONTEXT_RECEIVE or
|
|
|
|
|
* %FW_CDEV_ISO_CONTEXT_RECEIVE_MULTICHANNEL
|
|
|
|
|
* @header_size: Header size to strip in single-channel reception
|
|
|
|
|
* @channel: Channel to bind to in single-channel reception or transmission
|
|
|
|
|
* @speed: Transmission speed
|
|
|
|
|
* @closure: To be returned in &fw_cdev_event_iso_interrupt or
|
|
|
|
|
* &fw_cdev_event_iso_interrupt_multichannel
|
|
|
|
|
* @handle: Handle to context, written back by kernel
|
|
|
|
|
*
|
|
|
|
|
* Prior to sending or receiving isochronous I/O, a context must be created.
|
|
|
|
|
* The context records information about the transmit or receive configuration
|
|
|
|
|
* and typically maps to an underlying hardware resource. A context is set up
|
|
|
|
|
* for either sending or receiving. It is bound to a specific isochronous
|
|
|
|
|
* @channel.
|
|
|
|
|
*
|
|
|
|
|
* In case of multichannel reception, @header_size and @channel are ignored
|
|
|
|
|
* and the channels are selected by %FW_CDEV_IOC_SET_ISO_CHANNELS.
|
|
|
|
|
*
|
|
|
|
|
* For %FW_CDEV_ISO_CONTEXT_RECEIVE contexts, @header_size must be at least 4
|
|
|
|
|
* and must be a multiple of 4. It is ignored in other context types.
|
|
|
|
|
*
|
|
|
|
|
* @speed is ignored in receive context types.
|
|
|
|
|
*
|
|
|
|
|
* If a context was successfully created, the kernel writes back a handle to the
|
|
|
|
|
* context, which must be passed in for subsequent operations on that context.
|
|
|
|
|
*
|
|
|
|
|
* Limitations:
|
|
|
|
|
* No more than one iso context can be created per fd.
|
|
|
|
|
* The total number of contexts that all userspace and kernelspace drivers can
|
|
|
|
|
* create on a card at a time is a hardware limit, typically 4 or 8 contexts per
|
|
|
|
|
* direction, and of them at most one multichannel receive context.
|
|
|
|
|
*/
|
|
|
|
|
struct fw_cdev_create_iso_context {
|
|
|
|
|
__u32 type;
|
|
|
|
|
__u32 header_size;
|
|
|
|
|
__u32 channel;
|
|
|
|
|
__u32 speed;
|
|
|
|
|
__u64 closure;
|
|
|
|
|
__u32 handle;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct fw_cdev_set_iso_channels - Select channels in multichannel reception
|
|
|
|
|
* @channels: Bitmask of channels to listen to
|
|
|
|
|
* @handle: Handle of the mutichannel receive context
|
|
|
|
|
*
|
|
|
|
|
* @channels is the bitwise or of 1ULL << n for each channel n to listen to.
|
|
|
|
|
*
|
|
|
|
|
* The ioctl fails with errno %EBUSY if there is already another receive context
|
|
|
|
|
* on a channel in @channels. In that case, the bitmask of all unoccupied
|
|
|
|
|
* channels is returned in @channels.
|
|
|
|
|
*/
|
|
|
|
|
struct fw_cdev_set_iso_channels {
|
|
|
|
|
__u64 channels;
|
|
|
|
|
__u32 handle;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
#define FW_CDEV_ISO_PAYLOAD_LENGTH(v) (v)
|
|
|
|
|
#define FW_CDEV_ISO_INTERRUPT (1 << 16)
|
|
|
|
|
#define FW_CDEV_ISO_SKIP (1 << 17)
|
|
|
|
|
#define FW_CDEV_ISO_SYNC (1 << 17)
|
|
|
|
|
#define FW_CDEV_ISO_TAG(v) ((v) << 18)
|
|
|
|
|
#define FW_CDEV_ISO_SY(v) ((v) << 20)
|
|
|
|
|
#define FW_CDEV_ISO_HEADER_LENGTH(v) ((v) << 24)
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct fw_cdev_iso_packet - Isochronous packet
|
|
|
|
|
* @control: Contains the header length (8 uppermost bits),
|
|
|
|
|
* the sy field (4 bits), the tag field (2 bits), a sync flag
|
|
|
|
|
* or a skip flag (1 bit), an interrupt flag (1 bit), and the
|
|
|
|
|
* payload length (16 lowermost bits)
|
|
|
|
|
* @header: Header and payload in case of a transmit context.
|
|
|
|
|
*
|
|
|
|
|
* &struct fw_cdev_iso_packet is used to describe isochronous packet queues.
|
|
|
|
|
* Use the FW_CDEV_ISO_* macros to fill in @control.
|
|
|
|
|
* The @header array is empty in case of receive contexts.
|
|
|
|
|
*
|
|
|
|
|
* Context type %FW_CDEV_ISO_CONTEXT_TRANSMIT:
|
|
|
|
|
*
|
|
|
|
|
* @control.HEADER_LENGTH must be a multiple of 4. It specifies the numbers of
|
|
|
|
|
* bytes in @header that will be prepended to the packet's payload. These bytes
|
|
|
|
|
* are copied into the kernel and will not be accessed after the ioctl has
|
|
|
|
|
* returned.
|
|
|
|
|
*
|
|
|
|
|
* The @control.SY and TAG fields are copied to the iso packet header. These
|
|
|
|
|
* fields are specified by IEEE 1394a and IEC 61883-1.
|
|
|
|
|
*
|
|
|
|
|
* The @control.SKIP flag specifies that no packet is to be sent in a frame.
|
|
|
|
|
* When using this, all other fields except @control.INTERRUPT must be zero.
|
|
|
|
|
*
|
|
|
|
|
* When a packet with the @control.INTERRUPT flag set has been completed, an
|
|
|
|
|
* &fw_cdev_event_iso_interrupt event will be sent.
|
|
|
|
|
*
|
|
|
|
|
* Context type %FW_CDEV_ISO_CONTEXT_RECEIVE:
|
|
|
|
|
*
|
|
|
|
|
* @control.HEADER_LENGTH must be a multiple of the context's header_size.
|
|
|
|
|
* If the HEADER_LENGTH is larger than the context's header_size, multiple
|
|
|
|
|
* packets are queued for this entry.
|
|
|
|
|
*
|
|
|
|
|
* The @control.SY and TAG fields are ignored.
|
|
|
|
|
*
|
|
|
|
|
* If the @control.SYNC flag is set, the context drops all packets until a
|
|
|
|
|
* packet with a sy field is received which matches &fw_cdev_start_iso.sync.
|
|
|
|
|
*
|
|
|
|
|
* @control.PAYLOAD_LENGTH defines how many payload bytes can be received for
|
|
|
|
|
* one packet (in addition to payload quadlets that have been defined as headers
|
|
|
|
|
* and are stripped and returned in the &fw_cdev_event_iso_interrupt structure).
|
|
|
|
|
* If more bytes are received, the additional bytes are dropped. If less bytes
|
|
|
|
|
* are received, the remaining bytes in this part of the payload buffer will not
|
|
|
|
|
* be written to, not even by the next packet. I.e., packets received in
|
|
|
|
|
* consecutive frames will not necessarily be consecutive in memory. If an
|
|
|
|
|
* entry has queued multiple packets, the PAYLOAD_LENGTH is divided equally
|
|
|
|
|
* among them.
|
|
|
|
|
*
|
|
|
|
|
* When a packet with the @control.INTERRUPT flag set has been completed, an
|
|
|
|
|
* &fw_cdev_event_iso_interrupt event will be sent. An entry that has queued
|
|
|
|
|
* multiple receive packets is completed when its last packet is completed.
|
|
|
|
|
*
|
|
|
|
|
* Context type %FW_CDEV_ISO_CONTEXT_RECEIVE_MULTICHANNEL:
|
|
|
|
|
*
|
|
|
|
|
* Here, &fw_cdev_iso_packet would be more aptly named _iso_buffer_chunk since
|
|
|
|
|
* it specifies a chunk of the mmap()'ed buffer, while the number and alignment
|
|
|
|
|
* of packets to be placed into the buffer chunk is not known beforehand.
|
|
|
|
|
*
|
|
|
|
|
* @control.PAYLOAD_LENGTH is the size of the buffer chunk and specifies room
|
|
|
|
|
* for header, payload, padding, and trailer bytes of one or more packets.
|
|
|
|
|
* It must be a multiple of 4.
|
|
|
|
|
*
|
|
|
|
|
* @control.HEADER_LENGTH, TAG and SY are ignored. SYNC is treated as described
|
|
|
|
|
* for single-channel reception.
|
|
|
|
|
*
|
|
|
|
|
* When a buffer chunk with the @control.INTERRUPT flag set has been filled
|
|
|
|
|
* entirely, an &fw_cdev_event_iso_interrupt_mc event will be sent.
|
|
|
|
|
*/
|
|
|
|
|
struct fw_cdev_iso_packet {
|
|
|
|
|
__u32 control;
|
|
|
|
|
__u32 header[];
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct fw_cdev_queue_iso - Queue isochronous packets for I/O
|
|
|
|
|
* @packets: Userspace pointer to an array of &fw_cdev_iso_packet
|
|
|
|
|
* @data: Pointer into mmap()'ed payload buffer
|
|
|
|
|
* @size: Size of the @packets array, in bytes
|
|
|
|
|
* @handle: Isochronous context handle
|
|
|
|
|
*
|
|
|
|
|
* Queue a number of isochronous packets for reception or transmission.
|
|
|
|
|
* This ioctl takes a pointer to an array of &fw_cdev_iso_packet structs,
|
|
|
|
|
* which describe how to transmit from or receive into a contiguous region
|
|
|
|
|
* of a mmap()'ed payload buffer. As part of transmit packet descriptors,
|
|
|
|
|
* a series of headers can be supplied, which will be prepended to the
|
|
|
|
|
* payload during DMA.
|
|
|
|
|
*
|
|
|
|
|
* The kernel may or may not queue all packets, but will write back updated
|
|
|
|
|
* values of the @packets, @data and @size fields, so the ioctl can be
|
|
|
|
|
* resubmitted easily.
|
|
|
|
|
*
|
|
|
|
|
* In case of a multichannel receive context, @data must be quadlet-aligned
|
|
|
|
|
* relative to the buffer start.
|
|
|
|
|
*/
|
|
|
|
|
struct fw_cdev_queue_iso {
|
|
|
|
|
__u64 packets;
|
|
|
|
|
__u64 data;
|
|
|
|
|
__u32 size;
|
|
|
|
|
__u32 handle;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
#define FW_CDEV_ISO_CONTEXT_MATCH_TAG0 1
|
|
|
|
|
#define FW_CDEV_ISO_CONTEXT_MATCH_TAG1 2
|
|
|
|
|
#define FW_CDEV_ISO_CONTEXT_MATCH_TAG2 4
|
|
|
|
|
#define FW_CDEV_ISO_CONTEXT_MATCH_TAG3 8
|
|
|
|
|
#define FW_CDEV_ISO_CONTEXT_MATCH_ALL_TAGS 15
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct fw_cdev_start_iso - Start an isochronous transmission or reception
|
|
|
|
|
* @cycle: Cycle in which to start I/O. If @cycle is greater than or
|
|
|
|
|
* equal to 0, the I/O will start on that cycle.
|
|
|
|
|
* @sync: Determines the value to wait for receive packets that have
|
|
|
|
|
* the %FW_CDEV_ISO_SYNC bit set
|
|
|
|
|
* @tags: Tag filter bit mask. Only valid for isochronous reception.
|
|
|
|
|
* Determines the tag values for which packets will be accepted.
|
|
|
|
|
* Use FW_CDEV_ISO_CONTEXT_MATCH_* macros to set @tags.
|
|
|
|
|
* @handle: Isochronous context handle within which to transmit or receive
|
|
|
|
|
*/
|
|
|
|
|
struct fw_cdev_start_iso {
|
|
|
|
|
__s32 cycle;
|
|
|
|
|
__u32 sync;
|
|
|
|
|
__u32 tags;
|
|
|
|
|
__u32 handle;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct fw_cdev_stop_iso - Stop an isochronous transmission or reception
|
|
|
|
|
* @handle: Handle of isochronous context to stop
|
|
|
|
|
*/
|
|
|
|
|
struct fw_cdev_stop_iso {
|
|
|
|
|
__u32 handle;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct fw_cdev_flush_iso - flush completed iso packets
|
|
|
|
|
* @handle: handle of isochronous context to flush
|
|
|
|
|
*
|
|
|
|
|
* For %FW_CDEV_ISO_CONTEXT_TRANSMIT or %FW_CDEV_ISO_CONTEXT_RECEIVE contexts,
|
|
|
|
|
* report any completed packets.
|
|
|
|
|
*
|
|
|
|
|
* For %FW_CDEV_ISO_CONTEXT_RECEIVE_MULTICHANNEL contexts, report the current
|
|
|
|
|
* offset in the receive buffer, if it has changed; this is typically in the
|
|
|
|
|
* middle of some buffer chunk.
|
|
|
|
|
*
|
|
|
|
|
* Any %FW_CDEV_EVENT_ISO_INTERRUPT or %FW_CDEV_EVENT_ISO_INTERRUPT_MULTICHANNEL
|
|
|
|
|
* events generated by this ioctl are sent synchronously, i.e., are available
|
|
|
|
|
* for reading from the file descriptor when this ioctl returns.
|
|
|
|
|
*/
|
|
|
|
|
struct fw_cdev_flush_iso {
|
|
|
|
|
__u32 handle;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct fw_cdev_get_cycle_timer - read cycle timer register
|
|
|
|
|
* @local_time: system time, in microseconds since the Epoch
|
|
|
|
|
* @cycle_timer: Cycle Time register contents
|
|
|
|
|
*
|
|
|
|
|
* Same as %FW_CDEV_IOC_GET_CYCLE_TIMER2, but fixed to use %CLOCK_REALTIME
|
|
|
|
|
* and only with microseconds resolution.
|
|
|
|
|
*
|
|
|
|
|
* In version 1 and 2 of the ABI, this ioctl returned unreliable (non-
|
|
|
|
|
* monotonic) @cycle_timer values on certain controllers.
|
|
|
|
|
*/
|
|
|
|
|
struct fw_cdev_get_cycle_timer {
|
|
|
|
|
__u64 local_time;
|
|
|
|
|
__u32 cycle_timer;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct fw_cdev_get_cycle_timer2 - read cycle timer register
|
|
|
|
|
* @tv_sec: system time, seconds
|
|
|
|
|
* @tv_nsec: system time, sub-seconds part in nanoseconds
|
|
|
|
|
* @clk_id: input parameter, clock from which to get the system time
|
|
|
|
|
* @cycle_timer: Cycle Time register contents
|
|
|
|
|
*
|
|
|
|
|
* The %FW_CDEV_IOC_GET_CYCLE_TIMER2 ioctl reads the isochronous cycle timer
|
|
|
|
|
* and also the system clock. This allows to correlate reception time of
|
|
|
|
|
* isochronous packets with system time.
|
|
|
|
|
*
|
|
|
|
|
* @clk_id lets you choose a clock like with POSIX' clock_gettime function.
|
|
|
|
|
* Supported @clk_id values are POSIX' %CLOCK_REALTIME and %CLOCK_MONOTONIC
|
|
|
|
|
* and Linux' %CLOCK_MONOTONIC_RAW.
|
|
|
|
|
*
|
|
|
|
|
* @cycle_timer consists of 7 bits cycleSeconds, 13 bits cycleCount, and
|
|
|
|
|
* 12 bits cycleOffset, in host byte order. Cf. the Cycle Time register
|
|
|
|
|
* per IEEE 1394 or Isochronous Cycle Timer register per OHCI-1394.
|
|
|
|
|
*/
|
|
|
|
|
struct fw_cdev_get_cycle_timer2 {
|
|
|
|
|
__s64 tv_sec;
|
|
|
|
|
__s32 tv_nsec;
|
|
|
|
|
__s32 clk_id;
|
|
|
|
|
__u32 cycle_timer;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct fw_cdev_allocate_iso_resource - (De)allocate a channel or bandwidth
|
|
|
|
|
* @closure: Passed back to userspace in corresponding iso resource events
|
|
|
|
|
* @channels: Isochronous channels of which one is to be (de)allocated
|
|
|
|
|
* @bandwidth: Isochronous bandwidth units to be (de)allocated
|
|
|
|
|
* @handle: Handle to the allocation, written by the kernel (only valid in
|
|
|
|
|
* case of %FW_CDEV_IOC_ALLOCATE_ISO_RESOURCE ioctls)
|
|
|
|
|
*
|
|
|
|
|
* The %FW_CDEV_IOC_ALLOCATE_ISO_RESOURCE ioctl initiates allocation of an
|
|
|
|
|
* isochronous channel and/or of isochronous bandwidth at the isochronous
|
|
|
|
|
* resource manager (IRM). Only one of the channels specified in @channels is
|
|
|
|
|
* allocated. An %FW_CDEV_EVENT_ISO_RESOURCE_ALLOCATED is sent after
|
|
|
|
|
* communication with the IRM, indicating success or failure in the event data.
|
|
|
|
|
* The kernel will automatically reallocate the resources after bus resets.
|
|
|
|
|
* Should a reallocation fail, an %FW_CDEV_EVENT_ISO_RESOURCE_DEALLOCATED event
|
|
|
|
|
* will be sent. The kernel will also automatically deallocate the resources
|
|
|
|
|
* when the file descriptor is closed.
|
|
|
|
|
*
|
|
|
|
|
* The %FW_CDEV_IOC_DEALLOCATE_ISO_RESOURCE ioctl can be used to initiate
|
|
|
|
|
* deallocation of resources which were allocated as described above.
|
|
|
|
|
* An %FW_CDEV_EVENT_ISO_RESOURCE_DEALLOCATED event concludes this operation.
|
|
|
|
|
*
|
|
|
|
|
* The %FW_CDEV_IOC_ALLOCATE_ISO_RESOURCE_ONCE ioctl is a variant of allocation
|
|
|
|
|
* without automatic re- or deallocation.
|
|
|
|
|
* An %FW_CDEV_EVENT_ISO_RESOURCE_ALLOCATED event concludes this operation,
|
|
|
|
|
* indicating success or failure in its data.
|
|
|
|
|
*
|
|
|
|
|
* The %FW_CDEV_IOC_DEALLOCATE_ISO_RESOURCE_ONCE ioctl works like
|
|
|
|
|
* %FW_CDEV_IOC_ALLOCATE_ISO_RESOURCE_ONCE except that resources are freed
|
|
|
|
|
* instead of allocated.
|
|
|
|
|
* An %FW_CDEV_EVENT_ISO_RESOURCE_DEALLOCATED event concludes this operation.
|
|
|
|
|
*
|
|
|
|
|
* To summarize, %FW_CDEV_IOC_ALLOCATE_ISO_RESOURCE allocates iso resources
|
|
|
|
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* for the lifetime of the fd or @handle.
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* In contrast, %FW_CDEV_IOC_ALLOCATE_ISO_RESOURCE_ONCE allocates iso resources
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* for the duration of a bus generation.
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*
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* @channels is a host-endian bitfield with the least significant bit
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* representing channel 0 and the most significant bit representing channel 63:
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* 1ULL << c for each channel c that is a candidate for (de)allocation.
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*
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* @bandwidth is expressed in bandwidth allocation units, i.e. the time to send
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* one quadlet of data (payload or header data) at speed S1600.
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*/
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struct fw_cdev_allocate_iso_resource {
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__u64 closure;
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__u64 channels;
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__u32 bandwidth;
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__u32 handle;
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};
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|
/**
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* struct fw_cdev_send_stream_packet - send an asynchronous stream packet
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|
* @length: Length of outgoing payload, in bytes
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* @tag: Data format tag
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|
* @channel: Isochronous channel to transmit to
|
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|
* @sy: Synchronization code
|
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|
|
* @closure: Passed back to userspace in the response event
|
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|
|
* @data: Userspace pointer to payload
|
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|
|
* @generation: The bus generation where packet is valid
|
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|
|
* @speed: Speed to transmit at
|
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|
|
*
|
2023-10-24 12:59:35 +02:00
|
|
|
* The %FW_CDEV_IOC_SEND_STREAM_PACKET ioctl sends an asynchronous stream packet to every device
|
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|
|
* which is listening to the specified channel. The kernel writes either &fw_cdev_event_response
|
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|
|
* event or &fw_cdev_event_response2 event which indicates success or failure of the transmission.
|
2023-08-30 17:31:07 +02:00
|
|
|
*/
|
|
|
|
|
struct fw_cdev_send_stream_packet {
|
|
|
|
|
__u32 length;
|
|
|
|
|
__u32 tag;
|
|
|
|
|
__u32 channel;
|
|
|
|
|
__u32 sy;
|
|
|
|
|
__u64 closure;
|
|
|
|
|
__u64 data;
|
|
|
|
|
__u32 generation;
|
|
|
|
|
__u32 speed;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct fw_cdev_send_phy_packet - send a PHY packet
|
|
|
|
|
* @closure: Passed back to userspace in the PHY-packet-sent event
|
|
|
|
|
* @data: First and second quadlet of the PHY packet
|
|
|
|
|
* @generation: The bus generation where packet is valid
|
|
|
|
|
*
|
2023-10-24 12:59:35 +02:00
|
|
|
* The %FW_CDEV_IOC_SEND_PHY_PACKET ioctl sends a PHY packet to all nodes on the same card as this
|
|
|
|
|
* device. After transmission, either %FW_CDEV_EVENT_PHY_PACKET_SENT event or
|
2023-08-30 17:31:07 +02:00
|
|
|
* %FW_CDEV_EVENT_PHY_PACKET_SENT event is generated.
|
|
|
|
|
*
|
|
|
|
|
* The payload @data\[\] shall be specified in host byte order. Usually,
|
|
|
|
|
* @data\[1\] needs to be the bitwise inverse of @data\[0\]. VersaPHY packets
|
|
|
|
|
* are an exception to this rule.
|
|
|
|
|
*
|
|
|
|
|
* The ioctl is only permitted on device files which represent a local node.
|
|
|
|
|
*/
|
|
|
|
|
struct fw_cdev_send_phy_packet {
|
|
|
|
|
__u64 closure;
|
|
|
|
|
__u32 data[2];
|
|
|
|
|
__u32 generation;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* struct fw_cdev_receive_phy_packets - start reception of PHY packets
|
|
|
|
|
* @closure: Passed back to userspace in phy packet events
|
|
|
|
|
*
|
2023-10-24 12:59:35 +02:00
|
|
|
* This ioctl activates issuing of either %FW_CDEV_EVENT_PHY_PACKET_RECEIVED or
|
|
|
|
|
* %FW_CDEV_EVENT_PHY_PACKET_RECEIVED2 due to incoming PHY packets from any node on the same bus
|
|
|
|
|
* as the device.
|
2023-08-30 17:31:07 +02:00
|
|
|
*
|
|
|
|
|
* The ioctl is only permitted on device files which represent a local node.
|
|
|
|
|
*/
|
|
|
|
|
struct fw_cdev_receive_phy_packets {
|
|
|
|
|
__u64 closure;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
#define FW_CDEV_VERSION 3 /* Meaningless legacy macro; don't use it. */
|
|
|
|
|
|
|
|
|
|
#endif /* _LINUX_FIREWIRE_CDEV_H */
|
