[mirror_ubuntu-artful-kernel.git] / drivers / infiniband / hw / 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;
};

#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_pqkey(struct hfi1_ibport *ibp, __be16 trap_num, 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 ib_header *hdr,
	u32 rcv_flags,
	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 ib_header *hdr,
		       int has_grh, struct rvt_qp *qp, u32 bth0);

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 */
Commit	Line	Data
77241056	1	/*
b6eac931	2	* Copyright(c) 2015 - 2017 Intel Corporation.
77241056 MM	3	*
	4	* This file is provided under a dual BSD/GPLv2 license. When using or
	5	* redistributing this file, you may do so under either license.
	6	*
	7	* GPL LICENSE SUMMARY
	8	*
77241056 MM	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of version 2 of the GNU General Public License as
	11	* published by the Free Software Foundation.
	12	*
	13	* This program is distributed in the hope that it will be useful, but
	14	* WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	16	* General Public License for more details.
	17	*
	18	* BSD LICENSE
	19	*
77241056 MM	20	* Redistribution and use in source and binary forms, with or without
	21	* modification, are permitted provided that the following conditions
	22	* are met:
	23	*
	24	* - Redistributions of source code must retain the above copyright
	25	* notice, this list of conditions and the following disclaimer.
	26	* - Redistributions in binary form must reproduce the above copyright
	27	* notice, this list of conditions and the following disclaimer in
	28	* the documentation and/or other materials provided with the
	29	* distribution.
	30	* - Neither the name of Intel Corporation nor the names of its
	31	* contributors may be used to endorse or promote products derived
	32	* from this software without specific prior written permission.
	33	*
	34	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	35	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	36	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
	37	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	38	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	39	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	40	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	41	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	42	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	43	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	44	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	45	*
	46	*/
	47
	48	#ifndef HFI1_VERBS_H
	49	#define HFI1_VERBS_H
	50
	51	#include <linux/types.h>
	52	#include <linux/seqlock.h>
	53	#include <linux/kernel.h>
	54	#include <linux/interrupt.h>
	55	#include <linux/kref.h>
	56	#include <linux/workqueue.h>
	57	#include <linux/kthread.h>
	58	#include <linux/completion.h>
bb5df5f9	59	#include <linux/slab.h>
77241056 MM	60	#include <rdma/ib_pack.h>
	61	#include <rdma/ib_user_verbs.h>
	62	#include <rdma/ib_mad.h>
261a4351	63	#include <rdma/ib_hdrs.h>
ec3f2c12	64	#include <rdma/rdma_vt.h>
54d10c1e	65	#include <rdma/rdmavt_qp.h>
abd712da	66	#include <rdma/rdmavt_cq.h>
77241056 MM	67
	68	struct hfi1_ctxtdata;
	69	struct hfi1_pportdata;
	70	struct hfi1_devdata;
	71	struct hfi1_packet;
	72
	73	#include "iowait.h"
	74
	75	#define HFI1_MAX_RDMA_ATOMIC 16
77241056 MM	76
	77	/*
	78	* Increment this value if any changes that break userspace ABI
	79	* compatibility are made.
	80	*/
	81	#define HFI1_UVERBS_ABI_VERSION 2
	82
77241056 MM	83	/* IB Performance Manager status values */
	84	#define IB_PMA_SAMPLE_STATUS_DONE 0x00
	85	#define IB_PMA_SAMPLE_STATUS_STARTED 0x01
	86	#define IB_PMA_SAMPLE_STATUS_RUNNING 0x02
	87
	88	/* Mandatory IB performance counter select values. */
	89	#define IB_PMA_PORT_XMIT_DATA cpu_to_be16(0x0001)
	90	#define IB_PMA_PORT_RCV_DATA cpu_to_be16(0x0002)
	91	#define IB_PMA_PORT_XMIT_PKTS cpu_to_be16(0x0003)
	92	#define IB_PMA_PORT_RCV_PKTS cpu_to_be16(0x0004)
	93	#define IB_PMA_PORT_XMIT_WAIT cpu_to_be16(0x0005)
	94
	95	#define HFI1_VENDOR_IPG cpu_to_be16(0xFFA0)
	96
77241056 MM	97	#define IB_DEFAULT_GID_PREFIX cpu_to_be64(0xfe80000000000000ULL)
77241056 MM	98
b374e060 MM	99	#define RC_OP(x) IB_OPCODE_RC_##x
	100	#define UC_OP(x) IB_OPCODE_UC_##x
	101
77241056 MM	102	/* flags passed by hfi1_ib_rcv() */
	103	enum {
	104	HFI1_HAS_GRH = (1 << 0),
	105	};
	106
a9b6b3bc	107	struct hfi1_ahg_info {
77241056 MM	108	u32 ahgdesc[2];
	109	u16 tx_flags;
	110	u8 ahgcount;
	111	u8 ahgidx;
77241056 MM	112	};
77241056 MM	113
d4d602e9	114	struct hfi1_sdma_header {
77241056	115	__le64 pbc;
261a4351	116	struct ib_header hdr;
77241056 MM	117	} __packed;
77241056 MM	118
4c6829c5 DD	119	/*
	120	* hfi1 specific data structures that will be hidden from rvt after the queue
	121	* pair is made common
	122	*/
4c6829c5	123	struct hfi1_qp_priv {
a9b6b3bc	124	struct hfi1_ahg_info s_ahg; / ahg info for next header */
721d0427 JJ	125	struct sdma_engine s_sde; / current sde */
	126	struct send_context s_sendcontext; / current sendcontext */
	127	u8 s_sc; /* SC[0..4] for next packet */
4c6829c5	128	struct iowait s_iowait;
895420dd	129	struct rvt_qp *owner;
77241056 MM	130	};
77241056 MM	131
d46e5144 DD	132	/*
	133	* This structure is used to hold commonly lookedup and computed values during
	134	* the send engine progress.
	135	*/
	136	struct hfi1_pkt_state {
	137	struct hfi1_ibdev *dev;
	138	struct hfi1_ibport *ibp;
	139	struct hfi1_pportdata *ppd;
bb5df5f9	140	struct verbs_txreq *s_txreq;
747f4d7a	141	unsigned long flags;
dd1ed108 MM	142	unsigned long timeout;
	143	unsigned long timeout_int;
	144	int cpu;
	145	bool in_thread;
d46e5144 DD	146	};
d46e5144 DD	147
77241056 MM	148	#define HFI1_PSN_CREDIT 16
77241056 MM	149
77241056 MM	150	struct hfi1_opcode_stats {
	151	u64 n_packets; /* number of packets */
	152	u64 n_bytes; /* total number of bytes */
	153	};
	154
	155	struct hfi1_opcode_stats_perctx {
	156	struct hfi1_opcode_stats stats[256];
	157	};
	158
	159	static inline void inc_opstats(
	160	u32 tlen,
	161	struct hfi1_opcode_stats *stats)
	162	{
	163	#ifdef CONFIG_DEBUG_FS
	164	stats->n_bytes += tlen;
	165	stats->n_packets++;
	166	#endif
	167	}
	168
	169	struct hfi1_ibport {
895420dd	170	struct rvt_qp __rcu *qp[2];
4eb06882	171	struct rvt_ibport rvp;
4eb06882	172
77241056 MM	173	/* the first 16 entries are sl_to_vl for !OPA */
	174	u8 sl_to_sc[32];
	175	u8 sc_to_sl[32];
	176	};
	177
77241056	178	struct hfi1_ibdev {
ec3f2c12	179	struct rvt_dev_info rdi; /* Must be first */
77241056	180
77241056	181	/* QP numbers are shared by all IB ports */
4e045572 MM	182	/* protect txwait list */
4e045572 MM	183	seqlock_t txwait_lock ____cacheline_aligned_in_smp;
77241056 MM	184	struct list_head txwait; /* list for wait verbs_txreq */
77241056 MM	185	struct list_head memwait; /* list for wait kernel memory */
77241056	186	struct kmem_cache *verbs_txreq_cache;
4e045572 MM	187	u64 n_txwait;
4e045572 MM	188	u64 n_kmem_wait;
77241056	189
4e045572 MM	190	/* protect iowait lists */
4e045572 MM	191	seqlock_t iowait_lock ____cacheline_aligned_in_smp;
77241056	192	u64 n_piowait;
14553ca1	193	u64 n_piodrain;
4e045572	194	struct timer_list mem_timer;
77241056	195
77241056 MM	196	#ifdef CONFIG_DEBUG_FS
	197	/* per HFI debugfs */
	198	struct dentry *hfi1_ibdev_dbg;
	199	/* per HFI symlinks to above */
	200	struct dentry *hfi1_ibdev_link;
0181ce31 DH	201	#ifdef CONFIG_FAULT_INJECTION
	202	struct fault_opcode *fault_opcode;
	203	struct fault_packet *fault_packet;
243d9f43	204	bool fault_suppress_err;
0181ce31	205	#endif
77241056 MM	206	#endif
	207	};
	208
77241056 MM	209	static inline struct hfi1_ibdev to_idev(struct ib_device ibdev)
77241056 MM	210	{
ec3f2c12 DD	211	struct rvt_dev_info *rdi;
	212
	213	rdi = container_of(ibdev, struct rvt_dev_info, ibdev);
	214	return container_of(rdi, struct hfi1_ibdev, rdi);
77241056 MM	215	}
77241056 MM	216
895420dd	217	static inline struct rvt_qp iowait_to_qp(struct iowait s_iowait)
4c6829c5 DD	218	{
	219	struct hfi1_qp_priv *priv;
	220
	221	priv = container_of(s_iowait, struct hfi1_qp_priv, s_iowait);
	222	return priv->owner;
	223	}
	224
77241056 MM	225	/*
	226	* Send if not busy or waiting for I/O and either
	227	* a RC response is pending or we can process send work requests.
	228	*/
895420dd	229	static inline int hfi1_send_ok(struct rvt_qp *qp)
77241056	230	{
54d10c1e DD	231	return !(qp->s_flags & (RVT_S_BUSY \| RVT_S_ANY_WAIT_IO)) &&
	232	(qp->s_hdrwords \|\| (qp->s_flags & RVT_S_RESP_PENDING) \|\|
	233	!(qp->s_flags & RVT_S_ANY_WAIT_SEND));
77241056 MM	234	}
	235
	236	/*
	237	* This must be called with s_lock held.
	238	*/
77241056	239	void hfi1_bad_pqkey(struct hfi1_ibport *ibp, __be16 trap_num, u32 key, u32 sl,
5cd24119	240	u32 qp1, u32 qp2, u16 lid1, u16 lid2);
45b59eef	241	void hfi1_cap_mask_chg(struct rvt_dev_info *rdi, u8 port_num);
77241056 MM	242	void hfi1_sys_guid_chg(struct hfi1_ibport *ibp);
	243	void hfi1_node_desc_chg(struct hfi1_ibport *ibp);
	244	int hfi1_process_mad(struct ib_device *ibdev, int mad_flags, u8 port,
	245	const struct ib_wc in_wc, const struct ib_grh in_grh,
	246	const struct ib_mad_hdr *in_mad, size_t in_mad_size,
	247	struct ib_mad_hdr out_mad, size_t out_mad_size,
	248	u16 *out_mad_pkey_index);
77241056 MM	249
	250	/*
	251	* The PSN_MASK and PSN_SHIFT allow for
	252	* 1) comparing two PSNs
	253	* 2) returning the PSN with any upper bits masked
	254	* 3) returning the difference between to PSNs
	255	*
	256	* The number of significant bits in the PSN must
	257	* necessarily be at least one bit less than
	258	* the container holding the PSN.
	259	*/
	260	#ifndef CONFIG_HFI1_VERBS_31BIT_PSN
	261	#define PSN_MASK 0xFFFFFF
	262	#define PSN_SHIFT 8
	263	#else
	264	#define PSN_MASK 0x7FFFFFFF
	265	#define PSN_SHIFT 1
	266	#endif
	267	#define PSN_MODIFY_MASK 0xFFFFFF
	268
77241056 MM	269	/*
	270	* Compare two PSNs
	271	* Returns an integer <, ==, or > than zero.
	272	*/
	273	static inline int cmp_psn(u32 a, u32 b)
	274	{
50e5dcbe	275	return (((int)a) - ((int)b)) << PSN_SHIFT;
77241056 MM	276	}
	277
	278	/*
	279	* Return masked PSN
	280	*/
	281	static inline u32 mask_psn(u32 a)
	282	{
	283	return a & PSN_MASK;
	284	}
	285
	286	/*
	287	* Return delta between two PSNs
	288	*/
	289	static inline u32 delta_psn(u32 a, u32 b)
	290	{
	291	return (((int)a - (int)b) << PSN_SHIFT) >> PSN_SHIFT;
	292	}
	293
77241056 MM	294	struct verbs_txreq;
	295	void hfi1_put_txreq(struct verbs_txreq *tx);
	296
895420dd	297	int hfi1_verbs_send(struct rvt_qp qp, struct hfi1_pkt_state ps);
77241056	298
895420dd	299	void hfi1_copy_sge(struct rvt_sge_state ss, void data, u32 length,
0128fcea	300	bool release, bool copy_last);
77241056	301
77241056 MM	302	void hfi1_cnp_rcv(struct hfi1_packet *packet);
	303
	304	void hfi1_uc_rcv(struct hfi1_packet *packet);
	305
	306	void hfi1_rc_rcv(struct hfi1_packet *packet);
	307
	308	void hfi1_rc_hdrerr(
	309	struct hfi1_ctxtdata *rcd,
261a4351	310	struct ib_header *hdr,
77241056	311	u32 rcv_flags,
895420dd	312	struct rvt_qp *qp);
77241056	313
90898850	314	u8 ah_to_sc(struct ib_device ibdev, struct rdma_ah_attr ah_attr);
77241056	315
77241056 MM	316	struct ib_ah hfi1_create_qp0_ah(struct hfi1_ibport ibp, u16 dlid);
77241056 MM	317
261a4351	318	void hfi1_rc_send_complete(struct rvt_qp qp, struct ib_header hdr);
77241056	319
77241056 MM	320	void hfi1_ud_rcv(struct hfi1_packet *packet);
	321
	322	int hfi1_lookup_pkey_idx(struct hfi1_ibport *ibp, u16 pkey);
	323
ec4274f1	324	int hfi1_rvt_get_rwqe(struct rvt_qp *qp, int wr_id_only);
895420dd DD	325
895420dd DD	326	void hfi1_migrate_qp(struct rvt_qp *qp);
77241056	327
ec4274f1 DD	328	int hfi1_check_modify_qp(struct rvt_qp qp, struct ib_qp_attr attr,
	329	int attr_mask, struct ib_udata *udata);
	330
	331	void hfi1_modify_qp(struct rvt_qp qp, struct ib_qp_attr attr,
	332	int attr_mask, struct ib_udata *udata);
56acbbfb	333	void hfi1_restart_rc(struct rvt_qp *qp, u32 psn, int wait);
46a80d62	334	int hfi1_check_send_wqe(struct rvt_qp qp, struct rvt_swqe wqe);
31e7af1c	335
14553ca1 MM	336	extern const u32 rc_only_opcode;
	337	extern const u32 uc_only_opcode;
	338
261a4351	339	static inline u8 get_opcode(struct ib_header *h)
14553ca1 MM	340	{
	341	u16 lnh = be16_to_cpu(h->lrh[0]) & 3;
	342
	343	if (lnh == IB_LNH_IBA_LOCAL)
	344	return be32_to_cpu(h->u.oth.bth[0]) >> 24;
	345	else
	346	return be32_to_cpu(h->u.l.oth.bth[0]) >> 24;
	347	}
	348
261a4351	349	int hfi1_ruc_check_hdr(struct hfi1_ibport ibp, struct ib_header hdr,
895420dd	350	int has_grh, struct rvt_qp *qp, u32 bth0);
77241056 MM	351
77241056 MM	352	u32 hfi1_make_grh(struct hfi1_ibport ibp, struct ib_grh hdr,
d8966fcd	353	const struct ib_global_route *grh, u32 hwords, u32 nwords);
77241056	354
261a4351	355	void hfi1_make_ruc_header(struct rvt_qp qp, struct ib_other_headers ohdr,
bb5df5f9 DD	356	u32 bth0, u32 bth2, int middle,
bb5df5f9 DD	357	struct hfi1_pkt_state *ps);
77241056	358
83693bd1 DD	359	void _hfi1_do_send(struct work_struct *work);
83693bd1 DD	360
b6eac931 MM	361	void hfi1_do_send_from_rvt(struct rvt_qp *qp);
	362
	363	void hfi1_do_send(struct rvt_qp *qp, bool in_thread);
77241056	364
895420dd	365	void hfi1_send_complete(struct rvt_qp qp, struct rvt_swqe wqe,
77241056 MM	366	enum ib_wc_status status);
77241056 MM	367
895420dd	368	void hfi1_send_rc_ack(struct hfi1_ctxtdata , struct rvt_qp qp, int is_fecn);
77241056	369
bb5df5f9	370	int hfi1_make_rc_req(struct rvt_qp qp, struct hfi1_pkt_state ps);
77241056	371
bb5df5f9	372	int hfi1_make_uc_req(struct rvt_qp qp, struct hfi1_pkt_state ps);
77241056	373
bb5df5f9	374	int hfi1_make_ud_req(struct rvt_qp qp, struct hfi1_pkt_state ps);
77241056 MM	375
	376	int hfi1_register_ib_device(struct hfi1_devdata *);
	377
	378	void hfi1_unregister_ib_device(struct hfi1_devdata *);
	379
	380	void hfi1_ib_rcv(struct hfi1_packet *packet);
	381
	382	unsigned hfi1_get_npkeys(struct hfi1_devdata *);
	383
895420dd	384	int hfi1_verbs_send_dma(struct rvt_qp qp, struct hfi1_pkt_state ps,
d46e5144	385	u64 pbc);
77241056	386
895420dd	387	int hfi1_verbs_send_pio(struct rvt_qp qp, struct hfi1_pkt_state ps,
d46e5144	388	u64 pbc);
77241056	389
528ee9fb DL	390	int hfi1_wss_init(void);
	391	void hfi1_wss_exit(void);
	392
	393	/* platform specific: return the lowest level cache (llc) size, in KiB */
	394	static inline int wss_llc_size(void)
	395	{
	396	/* assume that the boot CPU value is universal for all CPUs */
	397	return boot_cpu_data.x86_cache_size;
	398	}
	399
	400	/* platform specific: cacheless copy */
	401	static inline void cacheless_memcpy(void dst, void src, size_t n)
	402	{
	403	/*
	404	* Use the only available X64 cacheless copy. Add a __user cast
	405	* to quiet sparse. The src agument is already in the kernel so
	406	* there are no security issues. The extra fault recovery machinery
	407	* is not invoked.
	408	*/
	409	__copy_user_nocache(dst, (void __user *)src, n, 0);
	410	}
	411
77241056 MM	412	extern const enum ib_wc_opcode ib_hfi1_wc_opcode[];
	413
	414	extern const u8 hdr_len_by_opcode[];
	415
83693bd1	416	extern const int ib_rvt_state_ops[];
77241056 MM	417
	418	extern __be64 ib_hfi1_sys_image_guid; /* in network order */
	419
77241056 MM	420	extern unsigned int hfi1_max_cqes;
	421
	422	extern unsigned int hfi1_max_cqs;
	423
	424	extern unsigned int hfi1_max_qp_wrs;
	425
	426	extern unsigned int hfi1_max_qps;
	427
	428	extern unsigned int hfi1_max_sges;
	429
	430	extern unsigned int hfi1_max_mcast_grps;
	431
	432	extern unsigned int hfi1_max_mcast_qp_attached;
	433
	434	extern unsigned int hfi1_max_srqs;
	435
	436	extern unsigned int hfi1_max_srq_sges;
	437
	438	extern unsigned int hfi1_max_srq_wrs;
	439
14553ca1 MM	440	extern unsigned short piothreshold;
14553ca1 MM	441
77241056 MM	442	extern const u32 ib_hfi1_rnr_table[];
77241056 MM	443
77241056	444	#endif /* HFI1_VERBS_H */