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rio_mport_cdev.h
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/* 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_ */