272 lines
9.1 KiB
C
272 lines
9.1 KiB
C
/*
|
|
* 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_
|
|
|
|
#ifndef __user
|
|
#define __user
|
|
#endif
|
|
|
|
struct rio_mport_maint_io {
|
|
uint32_t rioid; /* destID of remote device */
|
|
uint32_t hopcount; /* hopcount to remote device */
|
|
uint32_t offset; /* offset in register space */
|
|
size_t length; /* length in bytes */
|
|
void __user *buffer; /* 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 {
|
|
uint16_t hdid;
|
|
uint8_t id; /* Physical port ID */
|
|
uint8_t index;
|
|
uint32_t flags;
|
|
uint32_t sys_size; /* Default addressing size */
|
|
uint8_t port_ok;
|
|
uint8_t link_speed;
|
|
uint8_t link_width;
|
|
uint32_t dma_max_sge;
|
|
uint32_t dma_max_size;
|
|
uint32_t dma_align;
|
|
uint32_t transfer_mode; /* Default transfer mode */
|
|
uint32_t cap_sys_size; /* Capable system sizes */
|
|
uint32_t cap_addr_size; /* Capable addressing sizes */
|
|
uint32_t cap_transfer_mode; /* Capable transfer modes */
|
|
uint32_t 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 {
|
|
uint32_t rioid;
|
|
uint16_t payload;
|
|
};
|
|
|
|
struct rio_doorbell_filter {
|
|
uint32_t rioid; /* 0xffffffff to match all ids */
|
|
uint16_t low;
|
|
uint16_t high;
|
|
};
|
|
|
|
|
|
struct rio_portwrite {
|
|
uint32_t payload[16];
|
|
};
|
|
|
|
struct rio_pw_filter {
|
|
uint32_t mask;
|
|
uint32_t low;
|
|
uint32_t high;
|
|
};
|
|
|
|
/* 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 (uint64_t)(~((uint64_t) 0))
|
|
|
|
struct rio_mmap {
|
|
uint32_t rioid;
|
|
uint64_t rio_addr;
|
|
uint64_t length;
|
|
uint64_t handle;
|
|
void *address;
|
|
};
|
|
|
|
struct rio_dma_mem {
|
|
uint64_t length; /* length of DMA memory */
|
|
uint64_t dma_handle; /* handle associated with this memory */
|
|
void *buffer; /* pointer to this memory */
|
|
};
|
|
|
|
|
|
struct rio_event {
|
|
unsigned int 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;
|
|
};
|
|
|
|
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 {
|
|
uint32_t rioid; /* Target destID */
|
|
uint64_t rio_addr; /* Address in target's RIO mem space */
|
|
enum rio_exchange method; /* Data exchange method */
|
|
void __user *loc_addr;
|
|
uint64_t handle;
|
|
uint64_t offset; /* Offset in buffer */
|
|
uint64_t length; /* Length in bytes */
|
|
uint32_t completion_code; /* Completion code for this transfer */
|
|
};
|
|
|
|
struct rio_transaction {
|
|
uint32_t transfer_mode; /* Data transfer mode */
|
|
enum rio_transfer_sync sync; /* Synchronization method */
|
|
enum rio_transfer_dir dir; /* Transfer direction */
|
|
size_t count; /* Number of transfers */
|
|
struct rio_transfer_io __user *block; /* Array of <count> transfers */
|
|
};
|
|
|
|
struct rio_async_tx_wait {
|
|
uint32_t token; /* DMA transaction ID token */
|
|
uint32_t timeout; /* Wait timeout in msec, if 0 use default TO */
|
|
};
|
|
|
|
#define RIO_MAX_DEVNAME_SZ 20
|
|
|
|
struct rio_rdev_info {
|
|
uint32_t destid;
|
|
uint8_t hopcount;
|
|
uint32_t 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, uint16_t)
|
|
#define RIO_MPORT_MAINT_COMPTAG_SET \
|
|
_IOW(RIO_MPORT_DRV_MAGIC, 2, uint32_t)
|
|
#define RIO_MPORT_MAINT_PORT_IDX_GET \
|
|
_IOR(RIO_MPORT_DRV_MAGIC, 3, uint32_t)
|
|
#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, unsigned int)
|
|
#define RIO_GET_EVENT_MASK \
|
|
_IOR(RIO_MPORT_DRV_MAGIC, 14, unsigned int)
|
|
#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, uint64_t)
|
|
#define RIO_ALLOC_DMA \
|
|
_IOWR(RIO_MPORT_DRV_MAGIC, 19, struct rio_dma_mem)
|
|
#define RIO_FREE_DMA \
|
|
_IOW(RIO_MPORT_DRV_MAGIC, 20, uint64_t)
|
|
#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_ */
|