459 lines
13 KiB
C
459 lines
13 KiB
C
/*
|
|
* 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
|
|
#define HFI1_GUIDS_PER_PORT 5
|
|
|
|
/*
|
|
* 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 */
|
|
u8 r_adefered; /* number of acks defered */
|
|
struct iowait s_iowait;
|
|
struct timer_list s_rnr_timer;
|
|
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;
|
|
};
|
|
|
|
#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;
|
|
|
|
__be64 guids[HFI1_GUIDS_PER_PORT - 1]; /* writable GUIDs */
|
|
|
|
/* 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 wait lists */
|
|
seqlock_t iowait_lock;
|
|
struct list_head txwait; /* list for wait verbs_txreq */
|
|
struct list_head memwait; /* list for wait kernel memory */
|
|
struct list_head txreq_free;
|
|
struct kmem_cache *verbs_txreq_cache;
|
|
struct timer_list mem_timer;
|
|
|
|
u64 n_piowait;
|
|
u64 n_piodrain;
|
|
u64 n_txwait;
|
|
u64 n_kmem_wait;
|
|
|
|
#ifdef CONFIG_DEBUG_FS
|
|
/* per HFI debugfs */
|
|
struct dentry *hfi1_ibdev_dbg;
|
|
/* per HFI symlinks to above */
|
|
struct dentry *hfi1_ibdev_link;
|
|
#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 the lower 24 bits of the msn values.
|
|
* Returns an integer <, ==, or > than zero.
|
|
*/
|
|
static inline int cmp_msn(u32 a, u32 b)
|
|
{
|
|
return (((int)a) - ((int)b)) << 8;
|
|
}
|
|
|
|
/*
|
|
* 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,
|
|
int release, int copy_last);
|
|
|
|
void hfi1_skip_sge(struct rvt_sge_state *ss, u32 length, int release);
|
|
|
|
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 ib_ah_attr *ah_attr);
|
|
|
|
struct ib_ah *hfi1_create_qp0_ah(struct hfi1_ibport *ibp, u16 dlid);
|
|
|
|
void hfi1_rc_rnr_retry(unsigned long arg);
|
|
void hfi1_add_rnr_timer(struct rvt_qp *qp, u32 to);
|
|
void hfi1_rc_timeout(unsigned long arg);
|
|
void hfi1_del_timers_sync(struct rvt_qp *qp);
|
|
void hfi1_stop_rc_timers(struct rvt_qp *qp);
|
|
|
|
void hfi1_rc_send_complete(struct rvt_qp *qp, struct ib_header *hdr);
|
|
|
|
void hfi1_rc_error(struct rvt_qp *qp, enum ib_wc_status err);
|
|
|
|
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);
|
|
|
|
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,
|
|
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 */
|