drivers/infiniband/hw/hfi1/verbs.h - kernel/msm-4.19 - Gitiles

 /*
  * Copyright(c) 2015 - 2017 Intel Corporation.
  *
  * 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
  *
  * 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
  *
  * 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 HFI1_VERBS_H
 #define HFI1_VERBS_H

 #include <linux/types.h>
 #include <linux/seqlock.h>
 #include <linux/kernel.h>
 #include <linux/interrupt.h>
 #include <linux/kref.h>
 #include <linux/workqueue.h>
 #include <linux/kthread.h>
 #include <linux/completion.h>
 #include <linux/slab.h>
 #include <rdma/ib_pack.h>
 #include <rdma/ib_user_verbs.h>
 #include <rdma/ib_mad.h>
 #include <rdma/ib_hdrs.h>
 #include <rdma/rdma_vt.h>
 #include <rdma/rdmavt_qp.h>
 #include <rdma/rdmavt_cq.h>

 struct hfi1_ctxtdata;
 struct hfi1_pportdata;
 struct hfi1_devdata;
 struct hfi1_packet;

 #include "iowait.h"

 #define HFI1_MAX_RDMA_ATOMIC     16

 /*
  * Increment this value if any changes that break userspace ABI
  * compatibility are made.
  */
 #define HFI1_UVERBS_ABI_VERSION       2

 /* IB Performance Manager status values */
 #define IB_PMA_SAMPLE_STATUS_DONE       0x00
 #define IB_PMA_SAMPLE_STATUS_STARTED    0x01
 #define IB_PMA_SAMPLE_STATUS_RUNNING    0x02

 /* Mandatory IB performance counter select values. */
 #define IB_PMA_PORT_XMIT_DATA   cpu_to_be16(0x0001)
 #define IB_PMA_PORT_RCV_DATA    cpu_to_be16(0x0002)
 #define IB_PMA_PORT_XMIT_PKTS   cpu_to_be16(0x0003)
 #define IB_PMA_PORT_RCV_PKTS    cpu_to_be16(0x0004)
 #define IB_PMA_PORT_XMIT_WAIT   cpu_to_be16(0x0005)

 #define HFI1_VENDOR_IPG		cpu_to_be16(0xFFA0)

 #define IB_DEFAULT_GID_PREFIX	cpu_to_be64(0xfe80000000000000ULL)

 #define RC_OP(x) IB_OPCODE_RC_##x
 #define UC_OP(x) IB_OPCODE_UC_##x

 /* flags passed by hfi1_ib_rcv() */
 enum {
 	HFI1_HAS_GRH = (1 << 0),
 };

 struct hfi1_ahg_info {
 	u32 ahgdesc[2];
 	u16 tx_flags;
 	u8 ahgcount;
 	u8 ahgidx;
 };

 struct hfi1_sdma_header {
 	__le64 pbc;
 	struct ib_header hdr;
 } __packed;

 /*
  * hfi1 specific data structures that will be hidden from rvt after the queue
  * pair is made common
  */
 struct hfi1_qp_priv {
 	struct hfi1_ahg_info *s_ahg;              /* ahg info for next header */
 	struct sdma_engine *s_sde;                /* current sde */
 	struct send_context *s_sendcontext;       /* current sendcontext */
 	u8 s_sc;		                  /* SC[0..4] for next packet */
 	struct iowait s_iowait;
 	struct rvt_qp *owner;
 };

 /*
  * This structure is used to hold commonly lookedup and computed values during
  * the send engine progress.
  */
 struct hfi1_pkt_state {
 	struct hfi1_ibdev *dev;
 	struct hfi1_ibport *ibp;
 	struct hfi1_pportdata *ppd;
 	struct verbs_txreq *s_txreq;
 	unsigned long flags;
 	unsigned long timeout;
 	unsigned long timeout_int;
 	int cpu;
 	bool in_thread;
 	bool pkts_sent;
 };

 #define HFI1_PSN_CREDIT  16

 struct hfi1_opcode_stats {
 	u64 n_packets;          /* number of packets */
 	u64 n_bytes;            /* total number of bytes */
 };

 struct hfi1_opcode_stats_perctx {
 	struct hfi1_opcode_stats stats[256];
 };

 static inline void inc_opstats(
 	u32 tlen,
 	struct hfi1_opcode_stats *stats)
 {
 #ifdef CONFIG_DEBUG_FS
 	stats->n_bytes += tlen;
 	stats->n_packets++;
 #endif
 }

 struct hfi1_ibport {
 	struct rvt_qp __rcu *qp[2];
 	struct rvt_ibport rvp;

 	/* the first 16 entries are sl_to_vl for !OPA */
 	u8 sl_to_sc[32];
 	u8 sc_to_sl[32];
 };

 struct hfi1_ibdev {
 	struct rvt_dev_info rdi; /* Must be first */

 	/* QP numbers are shared by all IB ports */
 	/* protect txwait list */
 	seqlock_t txwait_lock ____cacheline_aligned_in_smp;
 	struct list_head txwait;        /* list for wait verbs_txreq */
 	struct list_head memwait;       /* list for wait kernel memory */
 	struct kmem_cache *verbs_txreq_cache;
 	u64 n_txwait;
 	u64 n_kmem_wait;

 	/* protect iowait lists */
 	seqlock_t iowait_lock ____cacheline_aligned_in_smp;
 	u64 n_piowait;
 	u64 n_piodrain;
 	struct timer_list mem_timer;

 #ifdef CONFIG_DEBUG_FS
 	/* per HFI debugfs */
 	struct dentry *hfi1_ibdev_dbg;
 	/* per HFI symlinks to above */
 	struct dentry *hfi1_ibdev_link;
 #ifdef CONFIG_FAULT_INJECTION
 	struct fault_opcode *fault_opcode;
 	struct fault_packet *fault_packet;
 	bool fault_suppress_err;
 #endif
 #endif
 };

 static inline struct hfi1_ibdev *to_idev(struct ib_device *ibdev)
 {
 	struct rvt_dev_info *rdi;

 	rdi = container_of(ibdev, struct rvt_dev_info, ibdev);
 	return container_of(rdi, struct hfi1_ibdev, rdi);
 }

 static inline struct rvt_qp *iowait_to_qp(struct  iowait *s_iowait)
 {
 	struct hfi1_qp_priv *priv;

 	priv = container_of(s_iowait, struct hfi1_qp_priv, s_iowait);
 	return priv->owner;
 }

 /*
  * Send if not busy or waiting for I/O and either
  * a RC response is pending or we can process send work requests.
  */
 static inline int hfi1_send_ok(struct rvt_qp *qp)
 {
 	return !(qp->s_flags & (RVT_S_BUSY | RVT_S_ANY_WAIT_IO)) &&
 		(qp->s_hdrwords || (qp->s_flags & RVT_S_RESP_PENDING) ||
 		 !(qp->s_flags & RVT_S_ANY_WAIT_SEND));
 }

 /*
  * This must be called with s_lock held.
  */
 void hfi1_bad_pkey(struct hfi1_ibport *ibp, u32 key, u32 sl,
 		   u32 qp1, u32 qp2, u16 lid1, u16 lid2);
 void hfi1_cap_mask_chg(struct rvt_dev_info *rdi, u8 port_num);
 void hfi1_sys_guid_chg(struct hfi1_ibport *ibp);
 void hfi1_node_desc_chg(struct hfi1_ibport *ibp);
 int hfi1_process_mad(struct ib_device *ibdev, int mad_flags, u8 port,
 		     const struct ib_wc *in_wc, const struct ib_grh *in_grh,
 		     const struct ib_mad_hdr *in_mad, size_t in_mad_size,
 		     struct ib_mad_hdr *out_mad, size_t *out_mad_size,
 		     u16 *out_mad_pkey_index);

 /*
  * The PSN_MASK and PSN_SHIFT allow for
  * 1) comparing two PSNs
  * 2) returning the PSN with any upper bits masked
  * 3) returning the difference between to PSNs
  *
  * The number of significant bits in the PSN must
  * necessarily be at least one bit less than
  * the container holding the PSN.
  */
 #ifndef CONFIG_HFI1_VERBS_31BIT_PSN
 #define PSN_MASK 0xFFFFFF
 #define PSN_SHIFT 8
 #else
 #define PSN_MASK 0x7FFFFFFF
 #define PSN_SHIFT 1
 #endif
 #define PSN_MODIFY_MASK 0xFFFFFF

 /*
  * Compare two PSNs
  * Returns an integer <, ==, or > than zero.
  */
 static inline int cmp_psn(u32 a, u32 b)
 {
 	return (((int)a) - ((int)b)) << PSN_SHIFT;
 }

 /*
  * Return masked PSN
  */
 static inline u32 mask_psn(u32 a)
 {
 	return a & PSN_MASK;
 }

 /*
  * Return delta between two PSNs
  */
 static inline u32 delta_psn(u32 a, u32 b)
 {
 	return (((int)a - (int)b) << PSN_SHIFT) >> PSN_SHIFT;
 }

 struct verbs_txreq;
 void hfi1_put_txreq(struct verbs_txreq *tx);

 int hfi1_verbs_send(struct rvt_qp *qp, struct hfi1_pkt_state *ps);

 void hfi1_copy_sge(struct rvt_sge_state *ss, void *data, u32 length,
 		   bool release, bool copy_last);

 void hfi1_cnp_rcv(struct hfi1_packet *packet);

 void hfi1_uc_rcv(struct hfi1_packet *packet);

 void hfi1_rc_rcv(struct hfi1_packet *packet);

 void hfi1_rc_hdrerr(
 	struct hfi1_ctxtdata *rcd,
 	struct hfi1_packet *packet,
 	struct rvt_qp *qp);

 u8 ah_to_sc(struct ib_device *ibdev, struct rdma_ah_attr *ah_attr);

 struct ib_ah *hfi1_create_qp0_ah(struct hfi1_ibport *ibp, u16 dlid);

 void hfi1_rc_send_complete(struct rvt_qp *qp, struct ib_header *hdr);

 void hfi1_ud_rcv(struct hfi1_packet *packet);

 int hfi1_lookup_pkey_idx(struct hfi1_ibport *ibp, u16 pkey);

 int hfi1_rvt_get_rwqe(struct rvt_qp *qp, int wr_id_only);

 void hfi1_migrate_qp(struct rvt_qp *qp);

 int hfi1_check_modify_qp(struct rvt_qp *qp, struct ib_qp_attr *attr,
 			 int attr_mask, struct ib_udata *udata);

 void hfi1_modify_qp(struct rvt_qp *qp, struct ib_qp_attr *attr,
 		    int attr_mask, struct ib_udata *udata);
 void hfi1_restart_rc(struct rvt_qp *qp, u32 psn, int wait);
 int hfi1_check_send_wqe(struct rvt_qp *qp, struct rvt_swqe *wqe);

 extern const u32 rc_only_opcode;
 extern const u32 uc_only_opcode;

 static inline u8 get_opcode(struct ib_header *h)
 {
 	u16 lnh = be16_to_cpu(h->lrh[0]) & 3;

 	if (lnh == IB_LNH_IBA_LOCAL)
 		return be32_to_cpu(h->u.oth.bth[0]) >> 24;
 	else
 		return be32_to_cpu(h->u.l.oth.bth[0]) >> 24;
 }

 int hfi1_ruc_check_hdr(struct hfi1_ibport *ibp, struct hfi1_packet *packet);

 u32 hfi1_make_grh(struct hfi1_ibport *ibp, struct ib_grh *hdr,
 		  const struct ib_global_route *grh, u32 hwords, u32 nwords);

 void hfi1_make_ruc_header(struct rvt_qp *qp, struct ib_other_headers *ohdr,
 			  u32 bth0, u32 bth2, int middle,
 			  struct hfi1_pkt_state *ps);

 void _hfi1_do_send(struct work_struct *work);

 void hfi1_do_send_from_rvt(struct rvt_qp *qp);

 void hfi1_do_send(struct rvt_qp *qp, bool in_thread);

 void hfi1_send_complete(struct rvt_qp *qp, struct rvt_swqe *wqe,
 			enum ib_wc_status status);

 void hfi1_send_rc_ack(struct hfi1_ctxtdata *, struct rvt_qp *qp, int is_fecn);

 int hfi1_make_rc_req(struct rvt_qp *qp, struct hfi1_pkt_state *ps);

 int hfi1_make_uc_req(struct rvt_qp *qp, struct hfi1_pkt_state *ps);

 int hfi1_make_ud_req(struct rvt_qp *qp, struct hfi1_pkt_state *ps);

 int hfi1_register_ib_device(struct hfi1_devdata *);

 void hfi1_unregister_ib_device(struct hfi1_devdata *);

 void hfi1_ib_rcv(struct hfi1_packet *packet);

 unsigned hfi1_get_npkeys(struct hfi1_devdata *);

 int hfi1_verbs_send_dma(struct rvt_qp *qp, struct hfi1_pkt_state *ps,
 			u64 pbc);

 int hfi1_verbs_send_pio(struct rvt_qp *qp, struct hfi1_pkt_state *ps,
 			u64 pbc);

 int hfi1_wss_init(void);
 void hfi1_wss_exit(void);

 /* platform specific: return the lowest level cache (llc) size, in KiB */
 static inline int wss_llc_size(void)
 {
 	/* assume that the boot CPU value is universal for all CPUs */
 	return boot_cpu_data.x86_cache_size;
 }

 /* platform specific: cacheless copy */
 static inline void cacheless_memcpy(void *dst, void *src, size_t n)
 {
 	/*
 	 * Use the only available X64 cacheless copy.  Add a __user cast
 	 * to quiet sparse.  The src agument is already in the kernel so
 	 * there are no security issues.  The extra fault recovery machinery
 	 * is not invoked.
 	 */
 	__copy_user_nocache(dst, (void __user *)src, n, 0);
 }

 extern const enum ib_wc_opcode ib_hfi1_wc_opcode[];

 extern const u8 hdr_len_by_opcode[];

 extern const int ib_rvt_state_ops[];

 extern __be64 ib_hfi1_sys_image_guid;    /* in network order */

 extern unsigned int hfi1_max_cqes;

 extern unsigned int hfi1_max_cqs;

 extern unsigned int hfi1_max_qp_wrs;

 extern unsigned int hfi1_max_qps;

 extern unsigned int hfi1_max_sges;

 extern unsigned int hfi1_max_mcast_grps;

 extern unsigned int hfi1_max_mcast_qp_attached;

 extern unsigned int hfi1_max_srqs;

 extern unsigned int hfi1_max_srq_sges;

 extern unsigned int hfi1_max_srq_wrs;

 extern unsigned short piothreshold;

 extern const u32 ib_hfi1_rnr_table[];

 #endif                          /* HFI1_VERBS_H */
	/*
	* Copyright(c) 2015 - 2017 Intel Corporation.
	*
	* 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
	*
	* 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
	*
	* 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 HFI1_VERBS_H
	#define HFI1_VERBS_H

	#include <linux/types.h>
	#include <linux/seqlock.h>
	#include <linux/kernel.h>
	#include <linux/interrupt.h>
	#include <linux/kref.h>
	#include <linux/workqueue.h>
	#include <linux/kthread.h>
	#include <linux/completion.h>
	#include <linux/slab.h>
	#include <rdma/ib_pack.h>
	#include <rdma/ib_user_verbs.h>
	#include <rdma/ib_mad.h>
	#include <rdma/ib_hdrs.h>
	#include <rdma/rdma_vt.h>
	#include <rdma/rdmavt_qp.h>
	#include <rdma/rdmavt_cq.h>

	struct hfi1_ctxtdata;
	struct hfi1_pportdata;
	struct hfi1_devdata;
	struct hfi1_packet;

	#include "iowait.h"

	#define HFI1_MAX_RDMA_ATOMIC 16

	/*
	* Increment this value if any changes that break userspace ABI
	* compatibility are made.
	*/
	#define HFI1_UVERBS_ABI_VERSION 2

	/* IB Performance Manager status values */
	#define IB_PMA_SAMPLE_STATUS_DONE 0x00
	#define IB_PMA_SAMPLE_STATUS_STARTED 0x01
	#define IB_PMA_SAMPLE_STATUS_RUNNING 0x02

	/* Mandatory IB performance counter select values. */
	#define IB_PMA_PORT_XMIT_DATA cpu_to_be16(0x0001)
	#define IB_PMA_PORT_RCV_DATA cpu_to_be16(0x0002)
	#define IB_PMA_PORT_XMIT_PKTS cpu_to_be16(0x0003)
	#define IB_PMA_PORT_RCV_PKTS cpu_to_be16(0x0004)
	#define IB_PMA_PORT_XMIT_WAIT cpu_to_be16(0x0005)

	#define HFI1_VENDOR_IPG cpu_to_be16(0xFFA0)

	#define IB_DEFAULT_GID_PREFIX cpu_to_be64(0xfe80000000000000ULL)

	#define RC_OP(x) IB_OPCODE_RC_##x
	#define UC_OP(x) IB_OPCODE_UC_##x

	/* flags passed by hfi1_ib_rcv() */
	enum {
	HFI1_HAS_GRH = (1 << 0),
	};

	struct hfi1_ahg_info {
	u32 ahgdesc[2];
	u16 tx_flags;
	u8 ahgcount;
	u8 ahgidx;
	};

	struct hfi1_sdma_header {
	__le64 pbc;
	struct ib_header hdr;
	} __packed;

	/*
	* hfi1 specific data structures that will be hidden from rvt after the queue
	* pair is made common
	*/
	struct hfi1_qp_priv {
	struct hfi1_ahg_info s_ahg; / ahg info for next header */
	struct sdma_engine s_sde; / current sde */
	struct send_context s_sendcontext; / current sendcontext */
	u8 s_sc; /* SC[0..4] for next packet */
	struct iowait s_iowait;
	struct rvt_qp *owner;
	};

	/*
	* This structure is used to hold commonly lookedup and computed values during
	* the send engine progress.
	*/
	struct hfi1_pkt_state {
	struct hfi1_ibdev *dev;
	struct hfi1_ibport *ibp;
	struct hfi1_pportdata *ppd;
	struct verbs_txreq *s_txreq;
	unsigned long flags;
	unsigned long timeout;
	unsigned long timeout_int;
	int cpu;
	bool in_thread;
	bool pkts_sent;
	};

	#define HFI1_PSN_CREDIT 16

	struct hfi1_opcode_stats {
	u64 n_packets; /* number of packets */
	u64 n_bytes; /* total number of bytes */
	};

	struct hfi1_opcode_stats_perctx {
	struct hfi1_opcode_stats stats[256];
	};

	static inline void inc_opstats(
	u32 tlen,
	struct hfi1_opcode_stats *stats)
	{
	#ifdef CONFIG_DEBUG_FS
	stats->n_bytes += tlen;
	stats->n_packets++;
	#endif
	}

	struct hfi1_ibport {
	struct rvt_qp __rcu *qp[2];
	struct rvt_ibport rvp;

	/* the first 16 entries are sl_to_vl for !OPA */
	u8 sl_to_sc[32];
	u8 sc_to_sl[32];
	};

	struct hfi1_ibdev {
	struct rvt_dev_info rdi; /* Must be first */

	/* QP numbers are shared by all IB ports */
	/* protect txwait list */
	seqlock_t txwait_lock ____cacheline_aligned_in_smp;
	struct list_head txwait; /* list for wait verbs_txreq */
	struct list_head memwait; /* list for wait kernel memory */
	struct kmem_cache *verbs_txreq_cache;
	u64 n_txwait;
	u64 n_kmem_wait;

	/* protect iowait lists */
	seqlock_t iowait_lock ____cacheline_aligned_in_smp;
	u64 n_piowait;
	u64 n_piodrain;
	struct timer_list mem_timer;

	#ifdef CONFIG_DEBUG_FS
	/* per HFI debugfs */
	struct dentry *hfi1_ibdev_dbg;
	/* per HFI symlinks to above */
	struct dentry *hfi1_ibdev_link;
	#ifdef CONFIG_FAULT_INJECTION
	struct fault_opcode *fault_opcode;
	struct fault_packet *fault_packet;
	bool fault_suppress_err;
	#endif
	#endif
	};

	static inline struct hfi1_ibdev to_idev(struct ib_device ibdev)
	{
	struct rvt_dev_info *rdi;

	rdi = container_of(ibdev, struct rvt_dev_info, ibdev);
	return container_of(rdi, struct hfi1_ibdev, rdi);
	}

	static inline struct rvt_qp iowait_to_qp(struct iowait s_iowait)
	{
	struct hfi1_qp_priv *priv;

	priv = container_of(s_iowait, struct hfi1_qp_priv, s_iowait);
	return priv->owner;
	}

	/*
	* Send if not busy or waiting for I/O and either
	* a RC response is pending or we can process send work requests.
	*/
	static inline int hfi1_send_ok(struct rvt_qp *qp)
	{
	return !(qp->s_flags & (RVT_S_BUSY \| RVT_S_ANY_WAIT_IO)) &&
	(qp->s_hdrwords \|\| (qp->s_flags & RVT_S_RESP_PENDING) \|\|
	!(qp->s_flags & RVT_S_ANY_WAIT_SEND));
	}

	/*
	* This must be called with s_lock held.
	*/
	void hfi1_bad_pkey(struct hfi1_ibport *ibp, u32 key, u32 sl,
	u32 qp1, u32 qp2, u16 lid1, u16 lid2);
	void hfi1_cap_mask_chg(struct rvt_dev_info *rdi, u8 port_num);
	void hfi1_sys_guid_chg(struct hfi1_ibport *ibp);
	void hfi1_node_desc_chg(struct hfi1_ibport *ibp);
	int hfi1_process_mad(struct ib_device *ibdev, int mad_flags, u8 port,
	const struct ib_wc in_wc, const struct ib_grh in_grh,
	const struct ib_mad_hdr *in_mad, size_t in_mad_size,
	struct ib_mad_hdr out_mad, size_t out_mad_size,
	u16 *out_mad_pkey_index);

	/*
	* The PSN_MASK and PSN_SHIFT allow for
	* 1) comparing two PSNs
	* 2) returning the PSN with any upper bits masked
	* 3) returning the difference between to PSNs
	*
	* The number of significant bits in the PSN must
	* necessarily be at least one bit less than
	* the container holding the PSN.
	*/
	#ifndef CONFIG_HFI1_VERBS_31BIT_PSN
	#define PSN_MASK 0xFFFFFF
	#define PSN_SHIFT 8
	#else
	#define PSN_MASK 0x7FFFFFFF
	#define PSN_SHIFT 1
	#endif
	#define PSN_MODIFY_MASK 0xFFFFFF

	/*
	* Compare two PSNs
	* Returns an integer <, ==, or > than zero.
	*/
	static inline int cmp_psn(u32 a, u32 b)
	{
	return (((int)a) - ((int)b)) << PSN_SHIFT;
	}

	/*
	* Return masked PSN
	*/
	static inline u32 mask_psn(u32 a)
	{
	return a & PSN_MASK;
	}

	/*
	* Return delta between two PSNs
	*/
	static inline u32 delta_psn(u32 a, u32 b)
	{
	return (((int)a - (int)b) << PSN_SHIFT) >> PSN_SHIFT;
	}

	struct verbs_txreq;
	void hfi1_put_txreq(struct verbs_txreq *tx);

	int hfi1_verbs_send(struct rvt_qp qp, struct hfi1_pkt_state ps);

	void hfi1_copy_sge(struct rvt_sge_state ss, void data, u32 length,
	bool release, bool copy_last);

	void hfi1_cnp_rcv(struct hfi1_packet *packet);

	void hfi1_uc_rcv(struct hfi1_packet *packet);

	void hfi1_rc_rcv(struct hfi1_packet *packet);

	void hfi1_rc_hdrerr(
	struct hfi1_ctxtdata *rcd,
	struct hfi1_packet *packet,
	struct rvt_qp *qp);

	u8 ah_to_sc(struct ib_device ibdev, struct rdma_ah_attr ah_attr);

	struct ib_ah hfi1_create_qp0_ah(struct hfi1_ibport ibp, u16 dlid);

	void hfi1_rc_send_complete(struct rvt_qp qp, struct ib_header hdr);

	void hfi1_ud_rcv(struct hfi1_packet *packet);

	int hfi1_lookup_pkey_idx(struct hfi1_ibport *ibp, u16 pkey);

	int hfi1_rvt_get_rwqe(struct rvt_qp *qp, int wr_id_only);

	void hfi1_migrate_qp(struct rvt_qp *qp);

	int hfi1_check_modify_qp(struct rvt_qp qp, struct ib_qp_attr attr,
	int attr_mask, struct ib_udata *udata);

	void hfi1_modify_qp(struct rvt_qp qp, struct ib_qp_attr attr,
	int attr_mask, struct ib_udata *udata);
	void hfi1_restart_rc(struct rvt_qp *qp, u32 psn, int wait);
	int hfi1_check_send_wqe(struct rvt_qp qp, struct rvt_swqe wqe);

	extern const u32 rc_only_opcode;
	extern const u32 uc_only_opcode;

	static inline u8 get_opcode(struct ib_header *h)
	{
	u16 lnh = be16_to_cpu(h->lrh[0]) & 3;

	if (lnh == IB_LNH_IBA_LOCAL)
	return be32_to_cpu(h->u.oth.bth[0]) >> 24;
	else
	return be32_to_cpu(h->u.l.oth.bth[0]) >> 24;
	}

	int hfi1_ruc_check_hdr(struct hfi1_ibport ibp, struct hfi1_packet packet);

	u32 hfi1_make_grh(struct hfi1_ibport ibp, struct ib_grh hdr,
	const struct ib_global_route *grh, u32 hwords, u32 nwords);

	void hfi1_make_ruc_header(struct rvt_qp qp, struct ib_other_headers ohdr,
	u32 bth0, u32 bth2, int middle,
	struct hfi1_pkt_state *ps);

	void _hfi1_do_send(struct work_struct *work);

	void hfi1_do_send_from_rvt(struct rvt_qp *qp);

	void hfi1_do_send(struct rvt_qp *qp, bool in_thread);

	void hfi1_send_complete(struct rvt_qp qp, struct rvt_swqe wqe,
	enum ib_wc_status status);

	void hfi1_send_rc_ack(struct hfi1_ctxtdata , struct rvt_qp qp, int is_fecn);

	int hfi1_make_rc_req(struct rvt_qp qp, struct hfi1_pkt_state ps);

	int hfi1_make_uc_req(struct rvt_qp qp, struct hfi1_pkt_state ps);

	int hfi1_make_ud_req(struct rvt_qp qp, struct hfi1_pkt_state ps);

	int hfi1_register_ib_device(struct hfi1_devdata *);

	void hfi1_unregister_ib_device(struct hfi1_devdata *);

	void hfi1_ib_rcv(struct hfi1_packet *packet);

	unsigned hfi1_get_npkeys(struct hfi1_devdata *);

	int hfi1_verbs_send_dma(struct rvt_qp qp, struct hfi1_pkt_state ps,
	u64 pbc);

	int hfi1_verbs_send_pio(struct rvt_qp qp, struct hfi1_pkt_state ps,
	u64 pbc);

	int hfi1_wss_init(void);
	void hfi1_wss_exit(void);

	/* platform specific: return the lowest level cache (llc) size, in KiB */
	static inline int wss_llc_size(void)
	{
	/* assume that the boot CPU value is universal for all CPUs */
	return boot_cpu_data.x86_cache_size;
	}

	/* platform specific: cacheless copy */
	static inline void cacheless_memcpy(void dst, void src, size_t n)
	{
	/*
	* Use the only available X64 cacheless copy. Add a __user cast
	* to quiet sparse. The src agument is already in the kernel so
	* there are no security issues. The extra fault recovery machinery
	* is not invoked.
	*/
	__copy_user_nocache(dst, (void __user *)src, n, 0);
	}

	extern const enum ib_wc_opcode ib_hfi1_wc_opcode[];

	extern const u8 hdr_len_by_opcode[];

	extern const int ib_rvt_state_ops[];

	extern __be64 ib_hfi1_sys_image_guid; /* in network order */

	extern unsigned int hfi1_max_cqes;

	extern unsigned int hfi1_max_cqs;

	extern unsigned int hfi1_max_qp_wrs;

	extern unsigned int hfi1_max_qps;

	extern unsigned int hfi1_max_sges;

	extern unsigned int hfi1_max_mcast_grps;

	extern unsigned int hfi1_max_mcast_qp_attached;

	extern unsigned int hfi1_max_srqs;

	extern unsigned int hfi1_max_srq_sges;

	extern unsigned int hfi1_max_srq_wrs;

	extern unsigned short piothreshold;

	extern const u32 ib_hfi1_rnr_table[];

	#endif /* HFI1_VERBS_H */