410 lines
12 KiB
C
410 lines
12 KiB
C
/*
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* Copyright (c) 2012 - 2017 Intel Corporation. All rights reserved.
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* Copyright (c) 2006 - 2012 QLogic Corporation. All rights reserved.
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* Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef QIB_VERBS_H
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#define QIB_VERBS_H
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#include <linux/types.h>
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#include <linux/spinlock.h>
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#include <linux/kernel.h>
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#include <linux/interrupt.h>
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#include <linux/kref.h>
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#include <linux/workqueue.h>
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#include <linux/kthread.h>
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#include <linux/completion.h>
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#include <rdma/ib_pack.h>
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#include <rdma/ib_user_verbs.h>
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#include <rdma/ib_hdrs.h>
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#include <rdma/rdma_vt.h>
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#include <rdma/rdmavt_cq.h>
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struct qib_ctxtdata;
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struct qib_pportdata;
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struct qib_devdata;
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struct qib_verbs_txreq;
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#define QIB_MAX_RDMA_ATOMIC 16
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#define QIB_GUIDS_PER_PORT 5
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#define QIB_PSN_SHIFT 8
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/*
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* Increment this value if any changes that break userspace ABI
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* compatibility are made.
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*/
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#define QIB_UVERBS_ABI_VERSION 2
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/* IB Performance Manager status values */
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#define IB_PMA_SAMPLE_STATUS_DONE 0x00
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#define IB_PMA_SAMPLE_STATUS_STARTED 0x01
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#define IB_PMA_SAMPLE_STATUS_RUNNING 0x02
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/* Mandatory IB performance counter select values. */
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#define IB_PMA_PORT_XMIT_DATA cpu_to_be16(0x0001)
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#define IB_PMA_PORT_RCV_DATA cpu_to_be16(0x0002)
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#define IB_PMA_PORT_XMIT_PKTS cpu_to_be16(0x0003)
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#define IB_PMA_PORT_RCV_PKTS cpu_to_be16(0x0004)
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#define IB_PMA_PORT_XMIT_WAIT cpu_to_be16(0x0005)
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#define QIB_VENDOR_IPG cpu_to_be16(0xFFA0)
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#define IB_DEFAULT_GID_PREFIX cpu_to_be64(0xfe80000000000000ULL)
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/* Values for set/get portinfo VLCap OperationalVLs */
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#define IB_VL_VL0 1
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#define IB_VL_VL0_1 2
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#define IB_VL_VL0_3 3
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#define IB_VL_VL0_7 4
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#define IB_VL_VL0_14 5
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static inline int qib_num_vls(int vls)
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{
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switch (vls) {
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default:
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case IB_VL_VL0:
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return 1;
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case IB_VL_VL0_1:
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return 2;
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case IB_VL_VL0_3:
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return 4;
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case IB_VL_VL0_7:
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return 8;
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case IB_VL_VL0_14:
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return 15;
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}
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}
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struct qib_pio_header {
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__le32 pbc[2];
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struct ib_header hdr;
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} __packed;
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/*
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* qib specific data structure that will be hidden from rvt after the queue pair
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* is made common.
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*/
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struct qib_qp_priv {
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struct ib_header *s_hdr; /* next packet header to send */
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struct list_head iowait; /* link for wait PIO buf */
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atomic_t s_dma_busy;
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struct qib_verbs_txreq *s_tx;
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struct work_struct s_work;
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wait_queue_head_t wait_dma;
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struct rvt_qp *owner;
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};
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#define QIB_PSN_CREDIT 16
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struct qib_opcode_stats {
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u64 n_packets; /* number of packets */
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u64 n_bytes; /* total number of bytes */
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};
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struct qib_opcode_stats_perctx {
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struct qib_opcode_stats stats[128];
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};
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struct qib_pma_counters {
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u64 n_unicast_xmit; /* total unicast packets sent */
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u64 n_unicast_rcv; /* total unicast packets received */
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u64 n_multicast_xmit; /* total multicast packets sent */
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u64 n_multicast_rcv; /* total multicast packets received */
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};
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struct qib_ibport {
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struct rvt_ibport rvp;
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struct rvt_ah *smi_ah;
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__be64 guids[QIB_GUIDS_PER_PORT - 1]; /* writable GUIDs */
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struct qib_pma_counters __percpu *pmastats;
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u64 z_unicast_xmit; /* starting count for PMA */
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u64 z_unicast_rcv; /* starting count for PMA */
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u64 z_multicast_xmit; /* starting count for PMA */
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u64 z_multicast_rcv; /* starting count for PMA */
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u64 z_symbol_error_counter; /* starting count for PMA */
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u64 z_link_error_recovery_counter; /* starting count for PMA */
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u64 z_link_downed_counter; /* starting count for PMA */
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u64 z_port_rcv_errors; /* starting count for PMA */
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u64 z_port_rcv_remphys_errors; /* starting count for PMA */
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u64 z_port_xmit_discards; /* starting count for PMA */
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u64 z_port_xmit_data; /* starting count for PMA */
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u64 z_port_rcv_data; /* starting count for PMA */
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u64 z_port_xmit_packets; /* starting count for PMA */
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u64 z_port_rcv_packets; /* starting count for PMA */
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u32 z_local_link_integrity_errors; /* starting count for PMA */
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u32 z_excessive_buffer_overrun_errors; /* starting count for PMA */
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u32 z_vl15_dropped; /* starting count for PMA */
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u8 sl_to_vl[16];
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};
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struct qib_ibdev {
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struct rvt_dev_info rdi;
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struct list_head piowait; /* list for wait PIO buf */
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struct list_head dmawait; /* list for wait DMA */
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struct list_head txwait; /* list for wait qib_verbs_txreq */
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struct list_head memwait; /* list for wait kernel memory */
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struct list_head txreq_free;
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struct timer_list mem_timer;
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struct qib_pio_header *pio_hdrs;
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dma_addr_t pio_hdrs_phys;
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u32 qp_rnd; /* random bytes for hash */
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u32 n_piowait;
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u32 n_txwait;
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#ifdef CONFIG_DEBUG_FS
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/* per HCA debugfs */
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struct dentry *qib_ibdev_dbg;
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#endif
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};
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struct qib_verbs_counters {
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u64 symbol_error_counter;
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u64 link_error_recovery_counter;
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u64 link_downed_counter;
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u64 port_rcv_errors;
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u64 port_rcv_remphys_errors;
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u64 port_xmit_discards;
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u64 port_xmit_data;
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u64 port_rcv_data;
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u64 port_xmit_packets;
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u64 port_rcv_packets;
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u32 local_link_integrity_errors;
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u32 excessive_buffer_overrun_errors;
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u32 vl15_dropped;
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};
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static inline struct qib_ibdev *to_idev(struct ib_device *ibdev)
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{
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struct rvt_dev_info *rdi;
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rdi = container_of(ibdev, struct rvt_dev_info, ibdev);
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return container_of(rdi, struct qib_ibdev, rdi);
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}
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/*
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* Send if not busy or waiting for I/O and either
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* a RC response is pending or we can process send work requests.
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*/
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static inline int qib_send_ok(struct rvt_qp *qp)
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{
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return !(qp->s_flags & (RVT_S_BUSY | RVT_S_ANY_WAIT_IO)) &&
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(qp->s_hdrwords || (qp->s_flags & RVT_S_RESP_PENDING) ||
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!(qp->s_flags & RVT_S_ANY_WAIT_SEND));
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}
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void _qib_schedule_send(struct rvt_qp *qp);
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void qib_schedule_send(struct rvt_qp *qp);
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static inline int qib_pkey_ok(u16 pkey1, u16 pkey2)
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{
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u16 p1 = pkey1 & 0x7FFF;
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u16 p2 = pkey2 & 0x7FFF;
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/*
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* Low 15 bits must be non-zero and match, and
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* one of the two must be a full member.
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*/
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return p1 && p1 == p2 && ((__s16)pkey1 < 0 || (__s16)pkey2 < 0);
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}
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void qib_bad_pkey(struct qib_ibport *ibp, u32 key, u32 sl,
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u32 qp1, u32 qp2, __be16 lid1, __be16 lid2);
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void qib_cap_mask_chg(struct rvt_dev_info *rdi, u8 port_num);
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void qib_sys_guid_chg(struct qib_ibport *ibp);
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void qib_node_desc_chg(struct qib_ibport *ibp);
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int qib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
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const struct ib_wc *in_wc, const struct ib_grh *in_grh,
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const struct ib_mad_hdr *in, size_t in_mad_size,
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struct ib_mad_hdr *out, size_t *out_mad_size,
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u16 *out_mad_pkey_index);
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void qib_notify_create_mad_agent(struct rvt_dev_info *rdi, int port_idx);
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void qib_notify_free_mad_agent(struct rvt_dev_info *rdi, int port_idx);
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/*
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* Compare the lower 24 bits of the two values.
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* Returns an integer <, ==, or > than zero.
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*/
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static inline int qib_cmp24(u32 a, u32 b)
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{
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return (((int) a) - ((int) b)) << 8;
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}
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int qib_snapshot_counters(struct qib_pportdata *ppd, u64 *swords,
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u64 *rwords, u64 *spkts, u64 *rpkts,
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u64 *xmit_wait);
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int qib_get_counters(struct qib_pportdata *ppd,
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struct qib_verbs_counters *cntrs);
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/*
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* Functions provided by qib driver for rdmavt to use
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*/
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unsigned qib_free_all_qps(struct rvt_dev_info *rdi);
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void *qib_qp_priv_alloc(struct rvt_dev_info *rdi, struct rvt_qp *qp);
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void qib_qp_priv_free(struct rvt_dev_info *rdi, struct rvt_qp *qp);
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void qib_notify_qp_reset(struct rvt_qp *qp);
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int qib_alloc_qpn(struct rvt_dev_info *rdi, struct rvt_qpn_table *qpt,
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enum ib_qp_type type, u8 port);
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void qib_restart_rc(struct rvt_qp *qp, u32 psn, int wait);
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#ifdef CONFIG_DEBUG_FS
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void qib_qp_iter_print(struct seq_file *s, struct rvt_qp_iter *iter);
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#endif
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unsigned qib_pkt_delay(u32 plen, u8 snd_mult, u8 rcv_mult);
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void qib_verbs_sdma_desc_avail(struct qib_pportdata *ppd, unsigned avail);
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void qib_put_txreq(struct qib_verbs_txreq *tx);
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int qib_verbs_send(struct rvt_qp *qp, struct ib_header *hdr,
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u32 hdrwords, struct rvt_sge_state *ss, u32 len);
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void qib_copy_sge(struct rvt_sge_state *ss, void *data, u32 length,
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int release);
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void qib_uc_rcv(struct qib_ibport *ibp, struct ib_header *hdr,
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int has_grh, void *data, u32 tlen, struct rvt_qp *qp);
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void qib_rc_rcv(struct qib_ctxtdata *rcd, struct ib_header *hdr,
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int has_grh, void *data, u32 tlen, struct rvt_qp *qp);
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int qib_check_ah(struct ib_device *ibdev, struct rdma_ah_attr *ah_attr);
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int qib_check_send_wqe(struct rvt_qp *qp, struct rvt_swqe *wqe);
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struct ib_ah *qib_create_qp0_ah(struct qib_ibport *ibp, u16 dlid);
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void qib_rc_rnr_retry(unsigned long arg);
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void qib_rc_send_complete(struct rvt_qp *qp, struct ib_header *hdr);
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int qib_post_ud_send(struct rvt_qp *qp, const struct ib_send_wr *wr);
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void qib_ud_rcv(struct qib_ibport *ibp, struct ib_header *hdr,
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int has_grh, void *data, u32 tlen, struct rvt_qp *qp);
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void mr_rcu_callback(struct rcu_head *list);
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void qib_migrate_qp(struct rvt_qp *qp);
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int qib_ruc_check_hdr(struct qib_ibport *ibp, struct ib_header *hdr,
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int has_grh, struct rvt_qp *qp, u32 bth0);
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u32 qib_make_grh(struct qib_ibport *ibp, struct ib_grh *hdr,
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const struct ib_global_route *grh, u32 hwords, u32 nwords);
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void qib_make_ruc_header(struct rvt_qp *qp, struct ib_other_headers *ohdr,
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u32 bth0, u32 bth2);
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void _qib_do_send(struct work_struct *work);
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void qib_do_send(struct rvt_qp *qp);
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void qib_send_complete(struct rvt_qp *qp, struct rvt_swqe *wqe,
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enum ib_wc_status status);
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void qib_send_rc_ack(struct rvt_qp *qp);
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int qib_make_rc_req(struct rvt_qp *qp, unsigned long *flags);
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int qib_make_uc_req(struct rvt_qp *qp, unsigned long *flags);
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int qib_make_ud_req(struct rvt_qp *qp, unsigned long *flags);
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int qib_register_ib_device(struct qib_devdata *);
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void qib_unregister_ib_device(struct qib_devdata *);
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void qib_ib_rcv(struct qib_ctxtdata *, void *, void *, u32);
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void qib_ib_piobufavail(struct qib_devdata *);
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unsigned qib_get_npkeys(struct qib_devdata *);
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unsigned qib_get_pkey(struct qib_ibport *, unsigned);
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extern const enum ib_wc_opcode ib_qib_wc_opcode[];
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/*
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* Below HCA-independent IB PhysPortState values, returned
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* by the f_ibphys_portstate() routine.
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*/
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#define IB_PHYSPORTSTATE_SLEEP 1
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#define IB_PHYSPORTSTATE_POLL 2
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#define IB_PHYSPORTSTATE_DISABLED 3
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#define IB_PHYSPORTSTATE_CFG_TRAIN 4
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#define IB_PHYSPORTSTATE_LINKUP 5
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#define IB_PHYSPORTSTATE_LINK_ERR_RECOVER 6
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#define IB_PHYSPORTSTATE_CFG_DEBOUNCE 8
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#define IB_PHYSPORTSTATE_CFG_IDLE 0xB
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#define IB_PHYSPORTSTATE_RECOVERY_RETRAIN 0xC
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#define IB_PHYSPORTSTATE_RECOVERY_WAITRMT 0xE
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#define IB_PHYSPORTSTATE_RECOVERY_IDLE 0xF
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#define IB_PHYSPORTSTATE_CFG_ENH 0x10
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#define IB_PHYSPORTSTATE_CFG_WAIT_ENH 0x13
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extern const int ib_rvt_state_ops[];
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extern __be64 ib_qib_sys_image_guid; /* in network order */
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extern unsigned int ib_rvt_lkey_table_size;
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extern unsigned int ib_qib_max_cqes;
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extern unsigned int ib_qib_max_cqs;
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extern unsigned int ib_qib_max_qp_wrs;
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extern unsigned int ib_qib_max_qps;
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extern unsigned int ib_qib_max_sges;
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extern unsigned int ib_qib_max_mcast_grps;
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extern unsigned int ib_qib_max_mcast_qp_attached;
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extern unsigned int ib_qib_max_srqs;
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extern unsigned int ib_qib_max_srq_sges;
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extern unsigned int ib_qib_max_srq_wrs;
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extern const u32 ib_qib_rnr_table[];
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extern const struct rvt_operation_params qib_post_parms[];
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#endif /* QIB_VERBS_H */
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