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Filename :
hfi1_ioctl.h
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/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) */ /* * * This file is provided under a dual BSD/GPLv2 license. When using or * redistributing this file, you may do so under either license. * * GPL LICENSE SUMMARY * * Copyright(c) 2015 Intel Corporation. * * This program is free software; you can redistribute it and/or modify * it under the terms of version 2 of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * BSD LICENSE * * Copyright(c) 2015 Intel Corporation. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * - 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. * - Neither the name of Intel Corporation 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 * OWNER 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 _LINUX__HFI1_IOCTL_H #define _LINUX__HFI1_IOCTL_H #include <linux/types.h> /* * This structure is passed to the driver to tell it where * user code buffers are, sizes, etc. The offsets and sizes of the * fields must remain unchanged, for binary compatibility. It can * be extended, if userversion is changed so user code can tell, if needed */ struct hfi1_user_info { /* * version of user software, to detect compatibility issues. * Should be set to HFI1_USER_SWVERSION. */ __u32 userversion; __u32 pad; /* * If two or more processes wish to share a context, each process * must set the subcontext_cnt and subcontext_id to the same * values. The only restriction on the subcontext_id is that * it be unique for a given node. */ __u16 subctxt_cnt; __u16 subctxt_id; /* 128bit UUID passed in by PSM. */ __u8 uuid[16]; }; struct hfi1_ctxt_info { __aligned_u64 runtime_flags; /* chip/drv runtime flags (HFI1_CAP_*) */ __u32 rcvegr_size; /* size of each eager buffer */ __u16 num_active; /* number of active units */ __u16 unit; /* unit (chip) assigned to caller */ __u16 ctxt; /* ctxt on unit assigned to caller */ __u16 subctxt; /* subctxt on unit assigned to caller */ __u16 rcvtids; /* number of Rcv TIDs for this context */ __u16 credits; /* number of PIO credits for this context */ __u16 numa_node; /* NUMA node of the assigned device */ __u16 rec_cpu; /* cpu # for affinity (0xffff if none) */ __u16 send_ctxt; /* send context in use by this user context */ __u16 egrtids; /* number of RcvArray entries for Eager Rcvs */ __u16 rcvhdrq_cnt; /* number of RcvHdrQ entries */ __u16 rcvhdrq_entsize; /* size (in bytes) for each RcvHdrQ entry */ __u16 sdma_ring_size; /* number of entries in SDMA request ring */ }; struct hfi1_tid_info { /* virtual address of first page in transfer */ __aligned_u64 vaddr; /* pointer to tid array. this array is big enough */ __aligned_u64 tidlist; /* number of tids programmed by this request */ __u32 tidcnt; /* length of transfer buffer programmed by this request */ __u32 length; }; /* * This structure is returned by the driver immediately after * open to get implementation-specific info, and info specific to this * instance. * * This struct must have explicit pad fields where type sizes * may result in different alignments between 32 and 64 bit * programs, since the 64 bit * bit kernel requires the user code * to have matching offsets */ struct hfi1_base_info { /* version of hardware, for feature checking. */ __u32 hw_version; /* version of software, for feature checking. */ __u32 sw_version; /* Job key */ __u16 jkey; __u16 padding1; /* * The special QP (queue pair) value that identifies PSM * protocol packet from standard IB packets. */ __u32 bthqp; /* PIO credit return address, */ __aligned_u64 sc_credits_addr; /* * Base address of write-only pio buffers for this process. * Each buffer has sendpio_credits*64 bytes. */ __aligned_u64 pio_bufbase_sop; /* * Base address of write-only pio buffers for this process. * Each buffer has sendpio_credits*64 bytes. */ __aligned_u64 pio_bufbase; /* address where receive buffer queue is mapped into */ __aligned_u64 rcvhdr_bufbase; /* base address of Eager receive buffers. */ __aligned_u64 rcvegr_bufbase; /* base address of SDMA completion ring */ __aligned_u64 sdma_comp_bufbase; /* * User register base for init code, not to be used directly by * protocol or applications. Always maps real chip register space. * the register addresses are: * ur_rcvhdrhead, ur_rcvhdrtail, ur_rcvegrhead, ur_rcvegrtail, * ur_rcvtidflow */ __aligned_u64 user_regbase; /* notification events */ __aligned_u64 events_bufbase; /* status page */ __aligned_u64 status_bufbase; /* rcvhdrtail update */ __aligned_u64 rcvhdrtail_base; /* * shared memory pages for subctxts if ctxt is shared; these cover * all the processes in the group sharing a single context. * all have enough space for the num_subcontexts value on this job. */ __aligned_u64 subctxt_uregbase; __aligned_u64 subctxt_rcvegrbuf; __aligned_u64 subctxt_rcvhdrbuf; }; #endif /* _LINIUX__HFI1_IOCTL_H */