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