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/* -*- c-basic-offset: 8 -*-
*
* fw-device-cdev.h -- Char device interface.
*
* Copyright (C) 2005-2006 Kristian Hoegsberg <krh@bitplanet.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef __fw_cdev_h
#define __fw_cdev_h
#include <asm/ioctl.h>
#include <asm/types.h>
#define TCODE_WRITE_QUADLET_REQUEST 0
#define TCODE_WRITE_BLOCK_REQUEST 1
#define TCODE_WRITE_RESPONSE 2
#define TCODE_READ_QUADLET_REQUEST 4
#define TCODE_READ_BLOCK_REQUEST 5
#define TCODE_READ_QUADLET_RESPONSE 6
#define TCODE_READ_BLOCK_RESPONSE 7
#define TCODE_CYCLE_START 8
#define TCODE_LOCK_REQUEST 9
#define TCODE_STREAM_DATA 10
#define TCODE_LOCK_RESPONSE 11
#define TCODE_LOCK_MASK_SWAP 0x11
#define TCODE_LOCK_COMPARE_SWAP 0x12
#define TCODE_LOCK_FETCH_ADD 0x13
#define TCODE_LOCK_LITTLE_ADD 0x14
#define TCODE_LOCK_BOUNDED_ADD 0x15
#define TCODE_LOCK_WRAP_ADD 0x16
#define TCODE_LOCK_VENDOR_DEPENDENT 0x17
#define RCODE_COMPLETE 0x0
#define RCODE_CONFLICT_ERROR 0x4
#define RCODE_DATA_ERROR 0x5
#define RCODE_TYPE_ERROR 0x6
#define RCODE_ADDRESS_ERROR 0x7
#define RCODE_SEND_ERROR 0x10
#define RCODE_CANCELLED 0x11
#define RCODE_BUSY 0x12
#define RCODE_GENERATION 0x13
#define RCODE_NO_ACK 0x14
#define SCODE_100 0x0
#define SCODE_200 0x1
#define SCODE_400 0x2
#define SCODE_800 0x3
#define SCODE_1600 0x4
#define SCODE_3200 0x5
#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
/* The 'closure' fields are for user space to use. Data passed in the
* 'closure' field for a request will be returned in the corresponding
* event. It's a 64-bit type so that it's a fixed size type big
* enough to hold a pointer on all platforms. */
struct fw_cdev_event_common {
__u64 closure;
__u32 type;
};
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 {
__u64 closure;
__u32 type;
__u32 rcode;
__u32 length;
__u32 data[0];
};
struct fw_cdev_event_request {
__u64 closure;
__u32 type;
__u32 tcode;
__u64 offset;
__u32 serial;
__u32 length;
__u32 data[0];
};
struct fw_cdev_event_iso_interrupt {
__u64 closure;
__u32 type;
__u32 cycle;
__u32 header_length; /* Length in bytes of following headers. */
__u32 header[0];
};
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_iso_interrupt iso_interrupt;
};
#define FW_CDEV_IOC_GET_INFO _IO('#', 0x00)
#define FW_CDEV_IOC_SEND_REQUEST _IO('#', 0x01)
#define FW_CDEV_IOC_ALLOCATE _IO('#', 0x02)
#define FW_CDEV_IOC_DEALLOCATE _IO('#', 0x03)
#define FW_CDEV_IOC_SEND_RESPONSE _IO('#', 0x04)
#define FW_CDEV_IOC_INITIATE_BUS_RESET _IO('#', 0x05)
#define FW_CDEV_IOC_CREATE_ISO_CONTEXT _IO('#', 0x06)
#define FW_CDEV_IOC_QUEUE_ISO _IO('#', 0x07)
#define FW_CDEV_IOC_START_ISO _IO('#', 0x08)
#define FW_CDEV_IOC_STOP_ISO _IO('#', 0x09)
/* FW_CDEV_VERSION History
*
* 1 Feb 18, 2007: Initial version.
*/
#define FW_CDEV_VERSION 1
struct fw_cdev_get_info {
/* The version field is just a running serial number. We
* never break backwards compatibility. Userspace passes in
* the version it expects and the kernel passes back the
* highest version it can provide. Even if the structs in
* this interface are extended in a later version, the kernel
* will not copy back more data than what was present in the
* interface version userspace expects. */
__u32 version;
/* If non-zero, at most rom_length bytes of config rom will be
* copied into that user space address. In either case,
* rom_length is updated with the actual length of the config
* rom. */
__u32 rom_length;
__u64 rom;
/* If non-zero, a fw_cdev_event_bus_reset struct will be
* copied here with the current state of the bus. This does
* not cause a bus reset to happen. The value of closure in
* this and sub-sequent bus reset events is set to
* bus_reset_closure. */
__u64 bus_reset;
__u64 bus_reset_closure;
/* The index of the card this devices belongs to. */
__u32 card;
};
struct fw_cdev_send_request {
__u32 tcode;
__u32 length;
__u64 offset;
__u64 closure;
__u64 data;
__u32 generation;
};
struct fw_cdev_send_response {
__u32 rcode;
__u32 length;
__u64 data;
__u32 serial;
};
struct fw_cdev_allocate {
__u64 offset;
__u64 closure;
__u32 length;
};
struct fw_cdev_deallocate {
__u64 offset;
};
#define FW_CDEV_LONG_RESET 0
#define FW_CDEV_SHORT_RESET 1
struct fw_cdev_initiate_bus_reset {
__u32 type;
};
#define FW_CDEV_ISO_CONTEXT_TRANSMIT 0
#define FW_CDEV_ISO_CONTEXT_RECEIVE 1
#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_create_iso_context {
__u32 type;
__u32 header_size;
__u32 channel;
__u32 speed;
};
struct fw_cdev_iso_packet {
__u16 payload_length; /* Length of indirect payload. */
__u32 interrupt : 1; /* Generate interrupt on this packet */
__u32 skip : 1; /* Set to not send packet at all. */
__u32 tag : 2;
__u32 sy : 4;
__u32 header_length : 8; /* Length of immediate header. */
__u32 header[0];
};
struct fw_cdev_queue_iso {
__u64 packets;
__u64 data;
__u32 size;
};
struct fw_cdev_start_iso {
__s32 cycle;
__u32 sync;
__u32 tags;
};
#endif /* __fw_cdev_h */
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