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-rw-r--r--include/linux/firewire-cdev.h1039
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diff --git a/include/linux/firewire-cdev.h b/include/linux/firewire-cdev.h
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--- a/include/linux/firewire-cdev.h
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@@ -1,1039 +0,0 @@
-/*
- * Char device interface.
- *
- * Copyright (C) 2005-2007 Kristian Hoegsberg <krh@bitplanet.net>
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
- * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- */
-
-#ifndef _LINUX_FIREWIRE_CDEV_H
-#define _LINUX_FIREWIRE_CDEV_H
-
-#include <linux/ioctl.h>
-#include <linux/types.h>
-#include <linux/firewire-constants.h>
-
-/* available since kernel version 2.6.22 */
-#define FW_CDEV_EVENT_BUS_RESET 0x00
-#define FW_CDEV_EVENT_RESPONSE 0x01
-#define FW_CDEV_EVENT_REQUEST 0x02
-#define FW_CDEV_EVENT_ISO_INTERRUPT 0x03
-
-/* available since kernel version 2.6.30 */
-#define FW_CDEV_EVENT_ISO_RESOURCE_ALLOCATED 0x04
-#define FW_CDEV_EVENT_ISO_RESOURCE_DEALLOCATED 0x05
-
-/* available since kernel version 2.6.36 */
-#define FW_CDEV_EVENT_REQUEST2 0x06
-#define FW_CDEV_EVENT_PHY_PACKET_SENT 0x07
-#define FW_CDEV_EVENT_PHY_PACKET_RECEIVED 0x08
-#define FW_CDEV_EVENT_ISO_INTERRUPT_MULTICHANNEL 0x09
-
-/**
- * struct fw_cdev_event_common - Common part of all fw_cdev_event_ types
- * @closure: For arbitrary use by userspace
- * @type: Discriminates the fw_cdev_event_ types
- *
- * This struct may be used to access generic members of all fw_cdev_event_
- * types regardless of the specific type.
- *
- * Data passed in the @closure field for a request will be returned in the
- * corresponding event. It is big enough to hold a pointer on all platforms.
- * The ioctl used to set @closure depends on the @type of event.
- */
-struct fw_cdev_event_common {
- __u64 closure;
- __u32 type;
-};
-
-/**
- * struct fw_cdev_event_bus_reset - Sent when a bus reset occurred
- * @closure: See &fw_cdev_event_common; set by %FW_CDEV_IOC_GET_INFO ioctl
- * @type: See &fw_cdev_event_common; always %FW_CDEV_EVENT_BUS_RESET
- * @node_id: New node ID of this node
- * @local_node_id: Node ID of the local node, i.e. of the controller
- * @bm_node_id: Node ID of the bus manager
- * @irm_node_id: Node ID of the iso resource manager
- * @root_node_id: Node ID of the root node
- * @generation: New bus generation
- *
- * This event is sent when the bus the device belongs to goes through a bus
- * reset. It provides information about the new bus configuration, such as
- * new node ID for this device, new root ID, and others.
- *
- * If @bm_node_id is 0xffff right after bus reset it can be reread by an
- * %FW_CDEV_IOC_GET_INFO ioctl after bus manager selection was finished.
- * Kernels with ABI version < 4 do not set @bm_node_id.
- */
-struct fw_cdev_event_bus_reset {
- __u64 closure;
- __u32 type;
- __u32 node_id;
- __u32 local_node_id;
- __u32 bm_node_id;
- __u32 irm_node_id;
- __u32 root_node_id;
- __u32 generation;
-};
-
-/**
- * struct fw_cdev_event_response - Sent when a response packet was received
- * @closure: See &fw_cdev_event_common; set by %FW_CDEV_IOC_SEND_REQUEST
- * or %FW_CDEV_IOC_SEND_BROADCAST_REQUEST
- * or %FW_CDEV_IOC_SEND_STREAM_PACKET ioctl
- * @type: See &fw_cdev_event_common; always %FW_CDEV_EVENT_RESPONSE
- * @rcode: Response code returned by the remote node
- * @length: Data length, i.e. the response's payload size in bytes
- * @data: Payload data, if any
- *
- * This event is sent when the stack receives a response to an outgoing request
- * sent by %FW_CDEV_IOC_SEND_REQUEST ioctl. The payload data for responses
- * carrying data (read and lock responses) follows immediately and can be
- * accessed through the @data field.
- *
- * The event is also generated after conclusions of transactions that do not
- * involve response packets. This includes unified write transactions,
- * broadcast write transactions, and transmission of asynchronous stream
- * packets. @rcode indicates success or failure of such transmissions.
- */
-struct fw_cdev_event_response {
- __u64 closure;
- __u32 type;
- __u32 rcode;
- __u32 length;
- __u32 data[0];
-};
-
-/**
- * struct fw_cdev_event_request - Old version of &fw_cdev_event_request2
- * @type: See &fw_cdev_event_common; always %FW_CDEV_EVENT_REQUEST
- *
- * This event is sent instead of &fw_cdev_event_request2 if the kernel or
- * the client implements ABI version <= 3. &fw_cdev_event_request lacks
- * essential information; use &fw_cdev_event_request2 instead.
- */
-struct fw_cdev_event_request {
- __u64 closure;
- __u32 type;
- __u32 tcode;
- __u64 offset;
- __u32 handle;
- __u32 length;
- __u32 data[0];
-};
-
-/**
- * struct fw_cdev_event_request2 - Sent on incoming request to an address region
- * @closure: See &fw_cdev_event_common; set by %FW_CDEV_IOC_ALLOCATE ioctl
- * @type: See &fw_cdev_event_common; always %FW_CDEV_EVENT_REQUEST2
- * @tcode: Transaction code of the incoming request
- * @offset: The offset into the 48-bit per-node address space
- * @source_node_id: Sender node ID
- * @destination_node_id: Destination node ID
- * @card: The index of the card from which the request came
- * @generation: Bus generation in which the request is valid
- * @handle: Reference to the kernel-side pending request
- * @length: Data length, i.e. the request's payload size in bytes
- * @data: Incoming data, if any
- *
- * This event is sent when the stack receives an incoming request to an address
- * region registered using the %FW_CDEV_IOC_ALLOCATE ioctl. The request is
- * guaranteed to be completely contained in the specified region. Userspace is
- * responsible for sending the response by %FW_CDEV_IOC_SEND_RESPONSE ioctl,
- * using the same @handle.
- *
- * The payload data for requests carrying data (write and lock requests)
- * follows immediately and can be accessed through the @data field.
- *
- * Unlike &fw_cdev_event_request, @tcode of lock requests is one of the
- * firewire-core specific %TCODE_LOCK_MASK_SWAP...%TCODE_LOCK_VENDOR_DEPENDENT,
- * i.e. encodes the extended transaction code.
- *
- * @card may differ from &fw_cdev_get_info.card because requests are received
- * from all cards of the Linux host. @source_node_id, @destination_node_id, and
- * @generation pertain to that card. Destination node ID and bus generation may
- * therefore differ from the corresponding fields of the last
- * &fw_cdev_event_bus_reset.
- *
- * @destination_node_id may also differ from the current node ID because of a
- * non-local bus ID part or in case of a broadcast write request. Note, a
- * client must call an %FW_CDEV_IOC_SEND_RESPONSE ioctl even in case of a
- * broadcast write request; the kernel will then release the kernel-side pending
- * request but will not actually send a response packet.
- *
- * In case of a write request to FCP_REQUEST or FCP_RESPONSE, the kernel already
- * sent a write response immediately after the request was received; in this
- * case the client must still call an %FW_CDEV_IOC_SEND_RESPONSE ioctl to
- * release the kernel-side pending request, though another response won't be
- * sent.
- *
- * If the client subsequently needs to initiate requests to the sender node of
- * an &fw_cdev_event_request2, it needs to use a device file with matching
- * card index, node ID, and generation for outbound requests.
- */
-struct fw_cdev_event_request2 {
- __u64 closure;
- __u32 type;
- __u32 tcode;
- __u64 offset;
- __u32 source_node_id;
- __u32 destination_node_id;
- __u32 card;
- __u32 generation;
- __u32 handle;
- __u32 length;
- __u32 data[0];
-};
-
-/**
- * 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, kernels with ABI version < 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[0];
-};
-
-/**
- * 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
- * @data: Incoming data
- *
- * If @type is %FW_CDEV_EVENT_PHY_PACKET_SENT, @length is 0 and @data empty,
- * except in case of a ping packet: Then, @length is 4, and @data[0] is the
- * ping time in 49.152MHz clocks if @rcode is %RCODE_COMPLETE.
- *
- * If @type is %FW_CDEV_EVENT_PHY_PACKET_RECEIVED, @length is 8 and @data
- * consists of the two PHY packet quadlets, in host byte order.
- */
-struct fw_cdev_event_phy_packet {
- __u64 closure;
- __u32 type;
- __u32 rcode;
- __u32 length;
- __u32 data[0];
-};
-
-/**
- * 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
- *
- * 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 */
-};
-
-/* 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)
-#define FW_CDEV_IOC_ADD_DESCRIPTOR _IOWR('#', 0x06, struct fw_cdev_add_descriptor)
-#define FW_CDEV_IOC_REMOVE_DESCRIPTOR _IOW('#', 0x07, struct fw_cdev_remove_descriptor)
-#define FW_CDEV_IOC_CREATE_ISO_CONTEXT _IOWR('#', 0x08, struct fw_cdev_create_iso_context)
-#define FW_CDEV_IOC_QUEUE_ISO _IOWR('#', 0x09, struct fw_cdev_queue_iso)
-#define FW_CDEV_IOC_START_ISO _IOW('#', 0x0a, struct fw_cdev_start_iso)
-#define FW_CDEV_IOC_STOP_ISO _IOW('#', 0x0b, struct fw_cdev_stop_iso)
-
-/* available since kernel version 2.6.24 */
-#define FW_CDEV_IOC_GET_CYCLE_TIMER _IOR('#', 0x0c, struct fw_cdev_get_cycle_timer)
-
-/* available since kernel version 2.6.30 */
-#define FW_CDEV_IOC_ALLOCATE_ISO_RESOURCE _IOWR('#', 0x0d, struct fw_cdev_allocate_iso_resource)
-#define FW_CDEV_IOC_DEALLOCATE_ISO_RESOURCE _IOW('#', 0x0e, struct fw_cdev_deallocate)
-#define FW_CDEV_IOC_ALLOCATE_ISO_RESOURCE_ONCE _IOW('#', 0x0f, struct fw_cdev_allocate_iso_resource)
-#define FW_CDEV_IOC_DEALLOCATE_ISO_RESOURCE_ONCE _IOW('#', 0x10, struct fw_cdev_allocate_iso_resource)
-#define FW_CDEV_IOC_GET_SPEED _IO('#', 0x11) /* returns speed code */
-#define FW_CDEV_IOC_SEND_BROADCAST_REQUEST _IOW('#', 0x12, struct fw_cdev_send_request)
-#define FW_CDEV_IOC_SEND_STREAM_PACKET _IOW('#', 0x13, struct fw_cdev_send_stream_packet)
-
-/* available since kernel version 2.6.34 */
-#define FW_CDEV_IOC_GET_CYCLE_TIMER2 _IOWR('#', 0x14, struct fw_cdev_get_cycle_timer2)
-
-/* available since kernel version 2.6.36 */
-#define FW_CDEV_IOC_SEND_PHY_PACKET _IOWR('#', 0x15, struct fw_cdev_send_phy_packet)
-#define FW_CDEV_IOC_RECEIVE_PHY_PACKETS _IOW('#', 0x16, struct fw_cdev_receive_phy_packets)
-#define FW_CDEV_IOC_SET_ISO_CHANNELS _IOW('#', 0x17, struct fw_cdev_set_iso_channels)
-
-/* available since kernel version 3.4 */
-#define FW_CDEV_IOC_FLUSH_ISO _IOW('#', 0x18, struct fw_cdev_flush_iso)
-
-/*
- * ABI version history
- * 1 (2.6.22) - initial version
- * (2.6.24) - added %FW_CDEV_IOC_GET_CYCLE_TIMER
- * 2 (2.6.30) - changed &fw_cdev_event_iso_interrupt.header if
- * &fw_cdev_create_iso_context.header_size is 8 or more
- * - added %FW_CDEV_IOC_*_ISO_RESOURCE*,
- * %FW_CDEV_IOC_GET_SPEED, %FW_CDEV_IOC_SEND_BROADCAST_REQUEST,
- * %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
- * dual-buffer or packet-per-buffer depending on hardware
- * - shared use and auto-response for FCP registers
- * 3 (2.6.34) - made &fw_cdev_get_cycle_timer reliable
- * - added %FW_CDEV_IOC_GET_CYCLE_TIMER2
- * 4 (2.6.36) - added %FW_CDEV_EVENT_REQUEST2, %FW_CDEV_EVENT_PHY_PACKET_*,
- * 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
- * - 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
- */
-
-/**
- * struct fw_cdev_get_info - General purpose information ioctl
- * @version: The version field is just a running serial number. Both an
- * input parameter (ABI version implemented by the client) and
- * output parameter (ABI version implemented by the kernel).
- * A client shall fill in the ABI @version for which the client
- * was implemented. This is necessary for forward compatibility.
- * @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
- * case, @rom_length is updated with the actual length of the
- * Configuration ROM.
- * @rom: If non-zero, address of a buffer to be filled by a copy of the
- * device's Configuration ROM
- * @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.
- * @bus_reset_closure: Value of &closure in this and subsequent bus reset events
- * @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.
- *
- * 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
- *
- * 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 an
- * &fw_cdev_event_response event back. The @closure field is passed back to
- * user space in the response event.
- */
-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[0];
-};
-
-/**
- * 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 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
- * for the lifetime of the fd or @handle.
- * In contrast, %FW_CDEV_IOC_ALLOCATE_ISO_RESOURCE_ONCE allocates iso resources
- * for the duration of a bus generation.
- *
- * @channels is a host-endian bitfield with the least significant bit
- * representing channel 0 and the most significant bit representing channel 63:
- * 1ULL << c for each channel c that is a candidate for (de)allocation.
- *
- * @bandwidth is expressed in bandwidth allocation units, i.e. the time to send
- * one quadlet of data (payload or header data) at speed S1600.
- */
-struct fw_cdev_allocate_iso_resource {
- __u64 closure;
- __u64 channels;
- __u32 bandwidth;
- __u32 handle;
-};
-
-/**
- * struct fw_cdev_send_stream_packet - send an asynchronous stream packet
- * @length: Length of outgoing payload, in bytes
- * @tag: Data format tag
- * @channel: Isochronous channel to transmit to
- * @sy: Synchronization code
- * @closure: Passed back to userspace in the response event
- * @data: Userspace pointer to payload
- * @generation: The bus generation where packet is valid
- * @speed: Speed to transmit at
- *
- * The %FW_CDEV_IOC_SEND_STREAM_PACKET ioctl sends an asynchronous stream packet
- * to every device which is listening to the specified channel. The kernel
- * writes an &fw_cdev_event_response event which indicates success or failure of
- * the transmission.
- */
-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
- *
- * The %FW_CDEV_IOC_SEND_PHY_PACKET ioctl sends a PHY packet to all nodes
- * on the same card as this device. After transmission, an
- * %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
- *
- * This ioctl activates issuing of %FW_CDEV_EVENT_PHY_PACKET_RECEIVED due to
- * incoming PHY packets from any node on the same bus as the device.
- *
- * 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 */