diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/rio_mport_cdev.h | 271 | ||||
| -rw-r--r-- | include/uapi/linux/Kbuild | 1 |
2 files changed, 272 insertions, 0 deletions
diff --git a/include/linux/rio_mport_cdev.h b/include/linux/rio_mport_cdev.h new file mode 100644 index 0000000..b65d19d --- /dev/null +++ b/include/linux/rio_mport_cdev.h @@ -0,0 +1,271 @@ +/* + * 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_ */ diff --git a/include/uapi/linux/Kbuild b/include/uapi/linux/Kbuild index 0495884..b71fd0b 100644 --- a/include/uapi/linux/Kbuild +++ b/include/uapi/linux/Kbuild @@ -354,6 +354,7 @@ header-y += reiserfs_fs.h header-y += reiserfs_xattr.h header-y += resource.h header-y += rfkill.h +header-y += rio_mport_cdev.h header-y += romfs_fs.h header-y += rose.h header-y += route.h |