/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) */
/*
* Copyright (c) 2015-2016, Integrated Device Technology Inc.
* Copyright (c) 2015, Prodrive Technologies
* Copyright (c) 2015, Texas Instruments Incorporated
* Copyright (c) 2015, RapidIO Trade Association
* All rights reserved.
*
* This software is available to you under a choice of one of two licenses.
* You may choose to be licensed under the terms of the GNU General Public
* License(GPL) Version 2, or the BSD-3 Clause license below:
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its contributors
* may be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _RIO_MPORT_CDEV_H_
#define _RIO_MPORT_CDEV_H_
#include <linux/ioctl.h>
#include <linux/types.h>
struct rio_mport_maint_io {
__u16 rioid; /* destID of remote device */
__u8 hopcount; /* hopcount to remote device */
__u8 pad0[5];
__u32 offset; /* offset in register space */
__u32 length; /* length in bytes */
__u64 buffer; /* pointer to data buffer */
};
/*
* Definitions for RapidIO data transfers:
* - memory mapped (MAPPED)
* - packet generation from memory (TRANSFER)
*/
#define RIO_TRANSFER_MODE_MAPPED (1 << 0)
#define RIO_TRANSFER_MODE_TRANSFER (1 << 1)
#define RIO_CAP_DBL_SEND (1 << 2)
#define RIO_CAP_DBL_RECV (1 << 3)
#define RIO_CAP_PW_SEND (1 << 4)
#define RIO_CAP_PW_RECV (1 << 5)
#define RIO_CAP_MAP_OUTB (1 << 6)
#define RIO_CAP_MAP_INB (1 << 7)
struct rio_mport_properties {
__u16 hdid;
__u8 id; /* Physical port ID */
__u8 index;
__u32 flags;
__u32 sys_size; /* Default addressing size */
__u8 port_ok;
__u8 link_speed;
__u8 link_width;
__u8 pad0;
__u32 dma_max_sge;
__u32 dma_max_size;
__u32 dma_align;
__u32 transfer_mode; /* Default transfer mode */
__u32 cap_sys_size; /* Capable system sizes */
__u32 cap_addr_size; /* Capable addressing sizes */
__u32 cap_transfer_mode; /* Capable transfer modes */
__u32 cap_mport; /* Mport capabilities */
};
/*
* Definitions for RapidIO events;
* - incoming port-writes
* - incoming doorbells
*/
#define RIO_DOORBELL (1 << 0)
#define RIO_PORTWRITE (1 << 1)
struct rio_doorbell {
__u16 rioid;
__u16 payload;
};
struct rio_doorbell_filter {
__u16 rioid; /* Use RIO_INVALID_DESTID to match all ids */
__u16 low;
__u16 high;
__u16 pad0;
};
struct rio_portwrite {
__u32 payload[16];
};
struct rio_pw_filter {
__u32 mask;
__u32 low;
__u32 high;
__u32 pad0;
};
/* RapidIO base address for inbound requests set to value defined below
* indicates that no specific RIO-to-local address translation is requested
* and driver should use direct (one-to-one) address mapping.
*/
#define RIO_MAP_ANY_ADDR (__u64)(~((__u64) 0))
struct rio_mmap {
__u16 rioid;
__u16 pad0[3];
__u64 rio_addr;
__u64 length;
__u64 handle;
__u64 address;
};
struct rio_dma_mem {
__u64 length; /* length of DMA memory */
__u64 dma_handle; /* handle associated with this memory */
__u64 address;
};
struct rio_event {
__u32 header; /* event type RIO_DOORBELL or RIO_PORTWRITE */
union {
struct rio_doorbell doorbell; /* header for RIO_DOORBELL */
struct rio_portwrite portwrite; /* header for RIO_PORTWRITE */
} u;
__u32 pad0;
};
enum rio_transfer_sync {
RIO_TRANSFER_SYNC, /* synchronous transfer */
RIO_TRANSFER_ASYNC, /* asynchronous transfer */
RIO_TRANSFER_FAF, /* fire-and-forget transfer */
};
enum rio_transfer_dir {
RIO_TRANSFER_DIR_READ, /* Read operation */
RIO_TRANSFER_DIR_WRITE, /* Write operation */
};
/*
* RapidIO data exchange transactions are lists of individual transfers. Each
* transfer exchanges data between two RapidIO devices by remote direct memory
* access and has its own completion code.
*
* The RapidIO specification defines four types of data exchange requests:
* NREAD, NWRITE, SWRITE and NWRITE_R. The RapidIO DMA channel interface allows
* to specify the required type of write operation or combination of them when
* only the last data packet requires response.
*
* NREAD: read up to 256 bytes from remote device memory into local memory
* NWRITE: write up to 256 bytes from local memory to remote device memory
* without confirmation
* SWRITE: as NWRITE, but all addresses and payloads must be 64-bit aligned
* NWRITE_R: as NWRITE, but expect acknowledgment from remote device.
*
* The default exchange is chosen from NREAD and any of the WRITE modes as the
* driver sees fit. For write requests the user can explicitly choose between
* any of the write modes for each transaction.
*/
enum rio_exchange {
RIO_EXCHANGE_DEFAULT, /* Default method */
RIO_EXCHANGE_NWRITE, /* All packets using NWRITE */
RIO_EXCHANGE_SWRITE, /* All packets using SWRITE */
RIO_EXCHANGE_NWRITE_R, /* Last packet NWRITE_R, others NWRITE */
RIO_EXCHANGE_SWRITE_R, /* Last packet NWRITE_R, others SWRITE */
RIO_EXCHANGE_NWRITE_R_ALL, /* All packets using NWRITE_R */
};
struct rio_transfer_io {
__u64 rio_addr; /* Address in target's RIO mem space */
__u64 loc_addr;
__u64 handle;
__u64 offset; /* Offset in buffer */
__u64 length; /* Length in bytes */
__u16 rioid; /* Target destID */
__u16 method; /* Data exchange method, one of rio_exchange enum */
__u32 completion_code; /* Completion code for this transfer */
};
struct rio_transaction {
__u64 block; /* Pointer to array of <count> transfers */
__u32 count; /* Number of transfers */
__u32 transfer_mode; /* Data transfer mode */
__u16 sync; /* Synch method, one of rio_transfer_sync enum */
__u16 dir; /* Transfer direction, one of rio_transfer_dir enum */
__u32 pad0;
};
struct rio_async_tx_wait {
__u32 token; /* DMA transaction ID token */
__u32 timeout; /* Wait timeout in msec, if 0 use default TO */
};
#define RIO_MAX_DEVNAME_SZ 20
struct rio_rdev_info {
__u16 destid;
__u8 hopcount;
__u8 pad0;
__u32 comptag;
char name[RIO_MAX_DEVNAME_SZ + 1];
};
/* Driver IOCTL codes */
#define RIO_MPORT_DRV_MAGIC 'm'
#define RIO_MPORT_MAINT_HDID_SET \
_IOW(RIO_MPORT_DRV_MAGIC, 1, __u16)
#define RIO_MPORT_MAINT_COMPTAG_SET \
_IOW(RIO_MPORT_DRV_MAGIC, 2, __u32)
#define RIO_MPORT_MAINT_PORT_IDX_GET \
_IOR(RIO_MPORT_DRV_MAGIC, 3, __u32)
#define RIO_MPORT_GET_PROPERTIES \
_IOR(RIO_MPORT_DRV_MAGIC, 4, struct rio_mport_properties)
#define RIO_MPORT_MAINT_READ_LOCAL \
_IOR(RIO_MPORT_DRV_MAGIC, 5, struct rio_mport_maint_io)
#define RIO_MPORT_MAINT_WRITE_LOCAL \
_IOW(RIO_MPORT_DRV_MAGIC, 6, struct rio_mport_maint_io)
#define RIO_MPORT_MAINT_READ_REMOTE \
_IOR(RIO_MPORT_DRV_MAGIC, 7, struct rio_mport_maint_io)
#define RIO_MPORT_MAINT_WRITE_REMOTE \
_IOW(RIO_MPORT_DRV_MAGIC, 8, struct rio_mport_maint_io)
#define RIO_ENABLE_DOORBELL_RANGE \
_IOW(RIO_MPORT_DRV_MAGIC, 9, struct rio_doorbell_filter)
#define RIO_DISABLE_DOORBELL_RANGE \
_IOW(RIO_MPORT_DRV_MAGIC, 10, struct rio_doorbell_filter)
#define RIO_ENABLE_PORTWRITE_RANGE \
_IOW(RIO_MPORT_DRV_MAGIC, 11, struct rio_pw_filter)
#define RIO_DISABLE_PORTWRITE_RANGE \
_IOW(RIO_MPORT_DRV_MAGIC, 12, struct rio_pw_filter)
#define RIO_SET_EVENT_MASK \
_IOW(RIO_MPORT_DRV_MAGIC, 13, __u32)
#define RIO_GET_EVENT_MASK \
_IOR(RIO_MPORT_DRV_MAGIC, 14, __u32)
#define RIO_MAP_OUTBOUND \
_IOWR(RIO_MPORT_DRV_MAGIC, 15, struct rio_mmap)
#define RIO_UNMAP_OUTBOUND \
_IOW(RIO_MPORT_DRV_MAGIC, 16, struct rio_mmap)
#define RIO_MAP_INBOUND \
_IOWR(RIO_MPORT_DRV_MAGIC, 17, struct rio_mmap)
#define RIO_UNMAP_INBOUND \
_IOW(RIO_MPORT_DRV_MAGIC, 18, __u64)
#define RIO_ALLOC_DMA \
_IOWR(RIO_MPORT_DRV_MAGIC, 19, struct rio_dma_mem)
#define RIO_FREE_DMA \
_IOW(RIO_MPORT_DRV_MAGIC, 20, __u64)
#define RIO_TRANSFER \
_IOWR(RIO_MPORT_DRV_MAGIC, 21, struct rio_transaction)
#define RIO_WAIT_FOR_ASYNC \
_IOW(RIO_MPORT_DRV_MAGIC, 22, struct rio_async_tx_wait)
#define RIO_DEV_ADD \
_IOW(RIO_MPORT_DRV_MAGIC, 23, struct rio_rdev_info)
#define RIO_DEV_DEL \
_IOW(RIO_MPORT_DRV_MAGIC, 24, struct rio_rdev_info)
#endif /* _RIO_MPORT_CDEV_H_ */