drivers/infiniband/hw/qib/qib_verbs.h - kernel/quantenna - Git at Google

 /*
  * Copyright (c) 2012, 2013 Intel Corporation.  All rights reserved.
  * Copyright (c) 2006 - 2012 QLogic Corporation. All rights reserved.
  * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved.
  *
  * This software is available to you under a choice of one of two
  * licenses.  You may choose to be licensed under the terms of the GNU
  * General Public License (GPL) Version 2, available from the file
  * COPYING in the main directory of this source tree, or the
  * OpenIB.org BSD license below:
  *
  *     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.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */

 #ifndef QIB_VERBS_H
 #define QIB_VERBS_H

 #include <linux/types.h>
 #include <linux/spinlock.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 <rdma/ib_pack.h>
 #include <rdma/ib_user_verbs.h>
 #include <rdma/rdma_vt.h>
 #include <rdma/rdmavt_cq.h>

 struct qib_ctxtdata;
 struct qib_pportdata;
 struct qib_devdata;
 struct qib_verbs_txreq;

 #define QIB_MAX_RDMA_ATOMIC     16
 #define QIB_GUIDS_PER_PORT	5
 #define QIB_PSN_SHIFT		8

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

 #define IB_SEQ_NAK	(3 << 29)

 /* AETH NAK opcode values */
 #define IB_RNR_NAK                      0x20
 #define IB_NAK_PSN_ERROR                0x60
 #define IB_NAK_INVALID_REQUEST          0x61
 #define IB_NAK_REMOTE_ACCESS_ERROR      0x62
 #define IB_NAK_REMOTE_OPERATIONAL_ERROR 0x63
 #define IB_NAK_INVALID_RD_REQUEST       0x64

 /* 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 QIB_VENDOR_IPG		cpu_to_be16(0xFFA0)

 #define IB_BTH_REQ_ACK		(1 << 31)
 #define IB_BTH_SOLICITED	(1 << 23)
 #define IB_BTH_MIG_REQ		(1 << 22)

 /* XXX Should be defined in ib_verbs.h enum ib_port_cap_flags */
 #define IB_PORT_OTHER_LOCAL_CHANGES_SUP (1 << 26)

 #define IB_GRH_VERSION		6
 #define IB_GRH_VERSION_MASK	0xF
 #define IB_GRH_VERSION_SHIFT	28
 #define IB_GRH_TCLASS_MASK	0xFF
 #define IB_GRH_TCLASS_SHIFT	20
 #define IB_GRH_FLOW_MASK	0xFFFFF
 #define IB_GRH_FLOW_SHIFT	0
 #define IB_GRH_NEXT_HDR		0x1B

 #define IB_DEFAULT_GID_PREFIX	cpu_to_be64(0xfe80000000000000ULL)

 /* Values for set/get portinfo VLCap OperationalVLs */
 #define IB_VL_VL0       1
 #define IB_VL_VL0_1     2
 #define IB_VL_VL0_3     3
 #define IB_VL_VL0_7     4
 #define IB_VL_VL0_14    5

 static inline int qib_num_vls(int vls)
 {
 	switch (vls) {
 	default:
 	case IB_VL_VL0:
 		return 1;
 	case IB_VL_VL0_1:
 		return 2;
 	case IB_VL_VL0_3:
 		return 4;
 	case IB_VL_VL0_7:
 		return 8;
 	case IB_VL_VL0_14:
 		return 15;
 	}
 }

 struct ib_reth {
 	__be64 vaddr;
 	__be32 rkey;
 	__be32 length;
 } __packed;

 struct ib_atomic_eth {
 	__be32 vaddr[2];        /* unaligned so access as 2 32-bit words */
 	__be32 rkey;
 	__be64 swap_data;
 	__be64 compare_data;
 } __packed;

 struct qib_other_headers {
 	__be32 bth[3];
 	union {
 		struct {
 			__be32 deth[2];
 			__be32 imm_data;
 		} ud;
 		struct {
 			struct ib_reth reth;
 			__be32 imm_data;
 		} rc;
 		struct {
 			__be32 aeth;
 			__be32 atomic_ack_eth[2];
 		} at;
 		__be32 imm_data;
 		__be32 aeth;
 		__be32 ieth;
 		struct ib_atomic_eth atomic_eth;
 	} u;
 } __packed;

 /*
  * Note that UD packets with a GRH header are 8+40+12+8 = 68 bytes
  * long (72 w/ imm_data).  Only the first 56 bytes of the IB header
  * will be in the eager header buffer.  The remaining 12 or 16 bytes
  * are in the data buffer.
  */
 struct qib_ib_header {
 	__be16 lrh[4];
 	union {
 		struct {
 			struct ib_grh grh;
 			struct qib_other_headers oth;
 		} l;
 		struct qib_other_headers oth;
 	} u;
 } __packed;

 struct qib_pio_header {
 	__le32 pbc[2];
 	struct qib_ib_header hdr;
 } __packed;

 /*
  * qib specific data structure that will be hidden from rvt after the queue pair
  * is made common.
  */
 struct qib_qp_priv {
 	struct qib_ib_header *s_hdr;    /* next packet header to send */
 	struct list_head iowait;        /* link for wait PIO buf */
 	atomic_t s_dma_busy;
 	struct qib_verbs_txreq *s_tx;
 	struct work_struct s_work;
 	wait_queue_head_t wait_dma;
 	struct rvt_qp *owner;
 };

 #define QIB_PSN_CREDIT  16

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

 struct qib_opcode_stats_perctx {
 	struct qib_opcode_stats stats[128];
 };

 struct qib_pma_counters {
 	u64 n_unicast_xmit;     /* total unicast packets sent */
 	u64 n_unicast_rcv;      /* total unicast packets received */
 	u64 n_multicast_xmit;   /* total multicast packets sent */
 	u64 n_multicast_rcv;    /* total multicast packets received */
 };

 struct qib_ibport {
 	struct rvt_ibport rvp;
 	struct rvt_ah *smi_ah;
 	__be64 guids[QIB_GUIDS_PER_PORT	- 1];	/* writable GUIDs */
 	struct qib_pma_counters __percpu *pmastats;
 	u64 z_unicast_xmit;     /* starting count for PMA */
 	u64 z_unicast_rcv;      /* starting count for PMA */
 	u64 z_multicast_xmit;   /* starting count for PMA */
 	u64 z_multicast_rcv;    /* starting count for PMA */
 	u64 z_symbol_error_counter;             /* starting count for PMA */
 	u64 z_link_error_recovery_counter;      /* starting count for PMA */
 	u64 z_link_downed_counter;              /* starting count for PMA */
 	u64 z_port_rcv_errors;                  /* starting count for PMA */
 	u64 z_port_rcv_remphys_errors;          /* starting count for PMA */
 	u64 z_port_xmit_discards;               /* starting count for PMA */
 	u64 z_port_xmit_data;                   /* starting count for PMA */
 	u64 z_port_rcv_data;                    /* starting count for PMA */
 	u64 z_port_xmit_packets;                /* starting count for PMA */
 	u64 z_port_rcv_packets;                 /* starting count for PMA */
 	u32 z_local_link_integrity_errors;      /* starting count for PMA */
 	u32 z_excessive_buffer_overrun_errors;  /* starting count for PMA */
 	u32 z_vl15_dropped;                     /* starting count for PMA */
 	u8 sl_to_vl[16];
 };

 struct qib_ibdev {
 	struct rvt_dev_info rdi;

 	struct list_head piowait;       /* list for wait PIO buf */
 	struct list_head dmawait;	/* list for wait DMA */
 	struct list_head txwait;        /* list for wait qib_verbs_txreq */
 	struct list_head memwait;       /* list for wait kernel memory */
 	struct list_head txreq_free;
 	struct timer_list mem_timer;
 	struct qib_pio_header *pio_hdrs;
 	dma_addr_t pio_hdrs_phys;
 	u32 qp_rnd; /* random bytes for hash */

 	u32 n_piowait;
 	u32 n_txwait;

 #ifdef CONFIG_DEBUG_FS
 	/* per HCA debugfs */
 	struct dentry *qib_ibdev_dbg;
 #endif
 };

 struct qib_verbs_counters {
 	u64 symbol_error_counter;
 	u64 link_error_recovery_counter;
 	u64 link_downed_counter;
 	u64 port_rcv_errors;
 	u64 port_rcv_remphys_errors;
 	u64 port_xmit_discards;
 	u64 port_xmit_data;
 	u64 port_rcv_data;
 	u64 port_xmit_packets;
 	u64 port_rcv_packets;
 	u32 local_link_integrity_errors;
 	u32 excessive_buffer_overrun_errors;
 	u32 vl15_dropped;
 };

 static inline struct qib_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 qib_ibdev, rdi);
 }

 /*
  * 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 qib_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));
 }

 void _qib_schedule_send(struct rvt_qp *qp);
 void qib_schedule_send(struct rvt_qp *qp);

 static inline int qib_pkey_ok(u16 pkey1, u16 pkey2)
 {
 	u16 p1 = pkey1 & 0x7FFF;
 	u16 p2 = pkey2 & 0x7FFF;

 	/*
 	 * Low 15 bits must be non-zero and match, and
 	 * one of the two must be a full member.
 	 */
 	return p1 && p1 == p2 && ((__s16)pkey1 < 0 || (__s16)pkey2 < 0);
 }

 void qib_bad_pqkey(struct qib_ibport *ibp, __be16 trap_num, u32 key, u32 sl,
 		   u32 qp1, u32 qp2, __be16 lid1, __be16 lid2);
 void qib_cap_mask_chg(struct rvt_dev_info *rdi, u8 port_num);
 void qib_sys_guid_chg(struct qib_ibport *ibp);
 void qib_node_desc_chg(struct qib_ibport *ibp);
 int qib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
 		    const struct ib_wc *in_wc, const struct ib_grh *in_grh,
 		    const struct ib_mad_hdr *in, size_t in_mad_size,
 		    struct ib_mad_hdr *out, size_t *out_mad_size,
 		    u16 *out_mad_pkey_index);
 void qib_notify_create_mad_agent(struct rvt_dev_info *rdi, int port_idx);
 void qib_notify_free_mad_agent(struct rvt_dev_info *rdi, int port_idx);

 /*
  * Compare the lower 24 bits of the two values.
  * Returns an integer <, ==, or > than zero.
  */
 static inline int qib_cmp24(u32 a, u32 b)
 {
 	return (((int) a) - ((int) b)) << 8;
 }

 int qib_snapshot_counters(struct qib_pportdata *ppd, u64 *swords,
 			  u64 *rwords, u64 *spkts, u64 *rpkts,
 			  u64 *xmit_wait);

 int qib_get_counters(struct qib_pportdata *ppd,
 		     struct qib_verbs_counters *cntrs);

 __be32 qib_compute_aeth(struct rvt_qp *qp);

 /*
  * Functions provided by qib driver for rdmavt to use
  */
 unsigned qib_free_all_qps(struct rvt_dev_info *rdi);
 void *qib_qp_priv_alloc(struct rvt_dev_info *rdi, struct rvt_qp *qp, gfp_t gfp);
 void qib_qp_priv_free(struct rvt_dev_info *rdi, struct rvt_qp *qp);
 void qib_notify_qp_reset(struct rvt_qp *qp);
 int qib_alloc_qpn(struct rvt_dev_info *rdi, struct rvt_qpn_table *qpt,
 		  enum ib_qp_type type, u8 port, gfp_t gfp);

 #ifdef CONFIG_DEBUG_FS

 struct qib_qp_iter;

 struct qib_qp_iter *qib_qp_iter_init(struct qib_ibdev *dev);

 int qib_qp_iter_next(struct qib_qp_iter *iter);

 void qib_qp_iter_print(struct seq_file *s, struct qib_qp_iter *iter);

 #endif

 void qib_get_credit(struct rvt_qp *qp, u32 aeth);

 unsigned qib_pkt_delay(u32 plen, u8 snd_mult, u8 rcv_mult);

 void qib_verbs_sdma_desc_avail(struct qib_pportdata *ppd, unsigned avail);

 void qib_put_txreq(struct qib_verbs_txreq *tx);

 int qib_verbs_send(struct rvt_qp *qp, struct qib_ib_header *hdr,
 		   u32 hdrwords, struct rvt_sge_state *ss, u32 len);

 void qib_copy_sge(struct rvt_sge_state *ss, void *data, u32 length,
 		  int release);

 void qib_skip_sge(struct rvt_sge_state *ss, u32 length, int release);

 void qib_uc_rcv(struct qib_ibport *ibp, struct qib_ib_header *hdr,
 		int has_grh, void *data, u32 tlen, struct rvt_qp *qp);

 void qib_rc_rcv(struct qib_ctxtdata *rcd, struct qib_ib_header *hdr,
 		int has_grh, void *data, u32 tlen, struct rvt_qp *qp);

 int qib_check_ah(struct ib_device *ibdev, struct ib_ah_attr *ah_attr);

 int qib_check_send_wqe(struct rvt_qp *qp, struct rvt_swqe *wqe);

 struct ib_ah *qib_create_qp0_ah(struct qib_ibport *ibp, u16 dlid);

 void qib_rc_rnr_retry(unsigned long arg);

 void qib_rc_send_complete(struct rvt_qp *qp, struct qib_ib_header *hdr);

 void qib_rc_error(struct rvt_qp *qp, enum ib_wc_status err);

 int qib_post_ud_send(struct rvt_qp *qp, struct ib_send_wr *wr);

 void qib_ud_rcv(struct qib_ibport *ibp, struct qib_ib_header *hdr,
 		int has_grh, void *data, u32 tlen, struct rvt_qp *qp);

 void mr_rcu_callback(struct rcu_head *list);

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

 void qib_migrate_qp(struct rvt_qp *qp);

 int qib_ruc_check_hdr(struct qib_ibport *ibp, struct qib_ib_header *hdr,
 		      int has_grh, struct rvt_qp *qp, u32 bth0);

 u32 qib_make_grh(struct qib_ibport *ibp, struct ib_grh *hdr,
 		 struct ib_global_route *grh, u32 hwords, u32 nwords);

 void qib_make_ruc_header(struct rvt_qp *qp, struct qib_other_headers *ohdr,
 			 u32 bth0, u32 bth2);

 void _qib_do_send(struct work_struct *work);

 void qib_do_send(struct rvt_qp *qp);

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

 void qib_send_rc_ack(struct rvt_qp *qp);

 int qib_make_rc_req(struct rvt_qp *qp, unsigned long *flags);

 int qib_make_uc_req(struct rvt_qp *qp, unsigned long *flags);

 int qib_make_ud_req(struct rvt_qp *qp, unsigned long *flags);

 int qib_register_ib_device(struct qib_devdata *);

 void qib_unregister_ib_device(struct qib_devdata *);

 void qib_ib_rcv(struct qib_ctxtdata *, void *, void *, u32);

 void qib_ib_piobufavail(struct qib_devdata *);

 unsigned qib_get_npkeys(struct qib_devdata *);

 unsigned qib_get_pkey(struct qib_ibport *, unsigned);

 extern const enum ib_wc_opcode ib_qib_wc_opcode[];

 /*
  * Below  HCA-independent IB PhysPortState values, returned
  * by the f_ibphys_portstate() routine.
  */
 #define IB_PHYSPORTSTATE_SLEEP 1
 #define IB_PHYSPORTSTATE_POLL 2
 #define IB_PHYSPORTSTATE_DISABLED 3
 #define IB_PHYSPORTSTATE_CFG_TRAIN 4
 #define IB_PHYSPORTSTATE_LINKUP 5
 #define IB_PHYSPORTSTATE_LINK_ERR_RECOVER 6
 #define IB_PHYSPORTSTATE_CFG_DEBOUNCE 8
 #define IB_PHYSPORTSTATE_CFG_IDLE 0xB
 #define IB_PHYSPORTSTATE_RECOVERY_RETRAIN 0xC
 #define IB_PHYSPORTSTATE_RECOVERY_WAITRMT 0xE
 #define IB_PHYSPORTSTATE_RECOVERY_IDLE 0xF
 #define IB_PHYSPORTSTATE_CFG_ENH 0x10
 #define IB_PHYSPORTSTATE_CFG_WAIT_ENH 0x13

 extern const int ib_rvt_state_ops[];

 extern __be64 ib_qib_sys_image_guid;    /* in network order */

 extern unsigned int ib_rvt_lkey_table_size;

 extern unsigned int ib_qib_max_cqes;

 extern unsigned int ib_qib_max_cqs;

 extern unsigned int ib_qib_max_qp_wrs;

 extern unsigned int ib_qib_max_qps;

 extern unsigned int ib_qib_max_sges;

 extern unsigned int ib_qib_max_mcast_grps;

 extern unsigned int ib_qib_max_mcast_qp_attached;

 extern unsigned int ib_qib_max_srqs;

 extern unsigned int ib_qib_max_srq_sges;

 extern unsigned int ib_qib_max_srq_wrs;

 extern const u32 ib_qib_rnr_table[];

 #endif                          /* QIB_VERBS_H */
	/*
	* Copyright (c) 2012, 2013 Intel Corporation. All rights reserved.
	* Copyright (c) 2006 - 2012 QLogic Corporation. All rights reserved.
	* Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved.
	*
	* This software is available to you under a choice of one of two
	* licenses. You may choose to be licensed under the terms of the GNU
	* General Public License (GPL) Version 2, available from the file
	* COPYING in the main directory of this source tree, or the
	* OpenIB.org BSD license below:
	*
	* 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.
	*
	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	* SOFTWARE.
	*/

	#ifndef QIB_VERBS_H
	#define QIB_VERBS_H

	#include <linux/types.h>
	#include <linux/spinlock.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 <rdma/ib_pack.h>
	#include <rdma/ib_user_verbs.h>
	#include <rdma/rdma_vt.h>
	#include <rdma/rdmavt_cq.h>

	struct qib_ctxtdata;
	struct qib_pportdata;
	struct qib_devdata;
	struct qib_verbs_txreq;

	#define QIB_MAX_RDMA_ATOMIC 16
	#define QIB_GUIDS_PER_PORT 5
	#define QIB_PSN_SHIFT 8

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

	#define IB_SEQ_NAK (3 << 29)

	/* AETH NAK opcode values */
	#define IB_RNR_NAK 0x20
	#define IB_NAK_PSN_ERROR 0x60
	#define IB_NAK_INVALID_REQUEST 0x61
	#define IB_NAK_REMOTE_ACCESS_ERROR 0x62
	#define IB_NAK_REMOTE_OPERATIONAL_ERROR 0x63
	#define IB_NAK_INVALID_RD_REQUEST 0x64

	/* 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 QIB_VENDOR_IPG cpu_to_be16(0xFFA0)

	#define IB_BTH_REQ_ACK (1 << 31)
	#define IB_BTH_SOLICITED (1 << 23)
	#define IB_BTH_MIG_REQ (1 << 22)

	/* XXX Should be defined in ib_verbs.h enum ib_port_cap_flags */
	#define IB_PORT_OTHER_LOCAL_CHANGES_SUP (1 << 26)

	#define IB_GRH_VERSION 6
	#define IB_GRH_VERSION_MASK 0xF
	#define IB_GRH_VERSION_SHIFT 28
	#define IB_GRH_TCLASS_MASK 0xFF
	#define IB_GRH_TCLASS_SHIFT 20
	#define IB_GRH_FLOW_MASK 0xFFFFF
	#define IB_GRH_FLOW_SHIFT 0
	#define IB_GRH_NEXT_HDR 0x1B

	#define IB_DEFAULT_GID_PREFIX cpu_to_be64(0xfe80000000000000ULL)

	/* Values for set/get portinfo VLCap OperationalVLs */
	#define IB_VL_VL0 1
	#define IB_VL_VL0_1 2
	#define IB_VL_VL0_3 3
	#define IB_VL_VL0_7 4
	#define IB_VL_VL0_14 5

	static inline int qib_num_vls(int vls)
	{
	switch (vls) {
	default:
	case IB_VL_VL0:
	return 1;
	case IB_VL_VL0_1:
	return 2;
	case IB_VL_VL0_3:
	return 4;
	case IB_VL_VL0_7:
	return 8;
	case IB_VL_VL0_14:
	return 15;
	}
	}

	struct ib_reth {
	__be64 vaddr;
	__be32 rkey;
	__be32 length;
	} __packed;

	struct ib_atomic_eth {
	__be32 vaddr[2]; /* unaligned so access as 2 32-bit words */
	__be32 rkey;
	__be64 swap_data;
	__be64 compare_data;
	} __packed;

	struct qib_other_headers {
	__be32 bth[3];
	union {
	struct {
	__be32 deth[2];
	__be32 imm_data;
	} ud;
	struct {
	struct ib_reth reth;
	__be32 imm_data;
	} rc;
	struct {
	__be32 aeth;
	__be32 atomic_ack_eth[2];
	} at;
	__be32 imm_data;
	__be32 aeth;
	__be32 ieth;
	struct ib_atomic_eth atomic_eth;
	} u;
	} __packed;

	/*
	* Note that UD packets with a GRH header are 8+40+12+8 = 68 bytes
	* long (72 w/ imm_data). Only the first 56 bytes of the IB header
	* will be in the eager header buffer. The remaining 12 or 16 bytes
	* are in the data buffer.
	*/
	struct qib_ib_header {
	__be16 lrh[4];
	union {
	struct {
	struct ib_grh grh;
	struct qib_other_headers oth;
	} l;
	struct qib_other_headers oth;
	} u;
	} __packed;

	struct qib_pio_header {
	__le32 pbc[2];
	struct qib_ib_header hdr;
	} __packed;

	/*
	* qib specific data structure that will be hidden from rvt after the queue pair
	* is made common.
	*/
	struct qib_qp_priv {
	struct qib_ib_header s_hdr; / next packet header to send */
	struct list_head iowait; /* link for wait PIO buf */
	atomic_t s_dma_busy;
	struct qib_verbs_txreq *s_tx;
	struct work_struct s_work;
	wait_queue_head_t wait_dma;
	struct rvt_qp *owner;
	};

	#define QIB_PSN_CREDIT 16

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

	struct qib_opcode_stats_perctx {
	struct qib_opcode_stats stats[128];
	};

	struct qib_pma_counters {
	u64 n_unicast_xmit; /* total unicast packets sent */
	u64 n_unicast_rcv; /* total unicast packets received */
	u64 n_multicast_xmit; /* total multicast packets sent */
	u64 n_multicast_rcv; /* total multicast packets received */
	};

	struct qib_ibport {
	struct rvt_ibport rvp;
	struct rvt_ah *smi_ah;
	__be64 guids[QIB_GUIDS_PER_PORT - 1]; /* writable GUIDs */
	struct qib_pma_counters __percpu *pmastats;
	u64 z_unicast_xmit; /* starting count for PMA */
	u64 z_unicast_rcv; /* starting count for PMA */
	u64 z_multicast_xmit; /* starting count for PMA */
	u64 z_multicast_rcv; /* starting count for PMA */
	u64 z_symbol_error_counter; /* starting count for PMA */
	u64 z_link_error_recovery_counter; /* starting count for PMA */
	u64 z_link_downed_counter; /* starting count for PMA */
	u64 z_port_rcv_errors; /* starting count for PMA */
	u64 z_port_rcv_remphys_errors; /* starting count for PMA */
	u64 z_port_xmit_discards; /* starting count for PMA */
	u64 z_port_xmit_data; /* starting count for PMA */
	u64 z_port_rcv_data; /* starting count for PMA */
	u64 z_port_xmit_packets; /* starting count for PMA */
	u64 z_port_rcv_packets; /* starting count for PMA */
	u32 z_local_link_integrity_errors; /* starting count for PMA */
	u32 z_excessive_buffer_overrun_errors; /* starting count for PMA */
	u32 z_vl15_dropped; /* starting count for PMA */
	u8 sl_to_vl[16];
	};

	struct qib_ibdev {
	struct rvt_dev_info rdi;

	struct list_head piowait; /* list for wait PIO buf */
	struct list_head dmawait; /* list for wait DMA */
	struct list_head txwait; /* list for wait qib_verbs_txreq */
	struct list_head memwait; /* list for wait kernel memory */
	struct list_head txreq_free;
	struct timer_list mem_timer;
	struct qib_pio_header *pio_hdrs;
	dma_addr_t pio_hdrs_phys;
	u32 qp_rnd; /* random bytes for hash */

	u32 n_piowait;
	u32 n_txwait;

	#ifdef CONFIG_DEBUG_FS
	/* per HCA debugfs */
	struct dentry *qib_ibdev_dbg;
	#endif
	};

	struct qib_verbs_counters {
	u64 symbol_error_counter;
	u64 link_error_recovery_counter;
	u64 link_downed_counter;
	u64 port_rcv_errors;
	u64 port_rcv_remphys_errors;
	u64 port_xmit_discards;
	u64 port_xmit_data;
	u64 port_rcv_data;
	u64 port_xmit_packets;
	u64 port_rcv_packets;
	u32 local_link_integrity_errors;
	u32 excessive_buffer_overrun_errors;
	u32 vl15_dropped;
	};

	static inline struct qib_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 qib_ibdev, rdi);
	}

	/*
	* 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 qib_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));
	}

	void _qib_schedule_send(struct rvt_qp *qp);
	void qib_schedule_send(struct rvt_qp *qp);

	static inline int qib_pkey_ok(u16 pkey1, u16 pkey2)
	{
	u16 p1 = pkey1 & 0x7FFF;
	u16 p2 = pkey2 & 0x7FFF;

	/*
	* Low 15 bits must be non-zero and match, and
	* one of the two must be a full member.
	*/
	return p1 && p1 == p2 && ((__s16)pkey1 < 0 \|\| (__s16)pkey2 < 0);
	}

	void qib_bad_pqkey(struct qib_ibport *ibp, __be16 trap_num, u32 key, u32 sl,
	u32 qp1, u32 qp2, __be16 lid1, __be16 lid2);
	void qib_cap_mask_chg(struct rvt_dev_info *rdi, u8 port_num);
	void qib_sys_guid_chg(struct qib_ibport *ibp);
	void qib_node_desc_chg(struct qib_ibport *ibp);
	int qib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
	const struct ib_wc in_wc, const struct ib_grh in_grh,
	const struct ib_mad_hdr *in, size_t in_mad_size,
	struct ib_mad_hdr out, size_t out_mad_size,
	u16 *out_mad_pkey_index);
	void qib_notify_create_mad_agent(struct rvt_dev_info *rdi, int port_idx);
	void qib_notify_free_mad_agent(struct rvt_dev_info *rdi, int port_idx);

	/*
	* Compare the lower 24 bits of the two values.
	* Returns an integer <, ==, or > than zero.
	*/
	static inline int qib_cmp24(u32 a, u32 b)
	{
	return (((int) a) - ((int) b)) << 8;
	}

	int qib_snapshot_counters(struct qib_pportdata ppd, u64 swords,
	u64 rwords, u64 spkts, u64 *rpkts,
	u64 *xmit_wait);

	int qib_get_counters(struct qib_pportdata *ppd,
	struct qib_verbs_counters *cntrs);

	__be32 qib_compute_aeth(struct rvt_qp *qp);

	/*
	* Functions provided by qib driver for rdmavt to use
	*/
	unsigned qib_free_all_qps(struct rvt_dev_info *rdi);
	void qib_qp_priv_alloc(struct rvt_dev_info rdi, struct rvt_qp *qp, gfp_t gfp);
	void qib_qp_priv_free(struct rvt_dev_info rdi, struct rvt_qp qp);
	void qib_notify_qp_reset(struct rvt_qp *qp);
	int qib_alloc_qpn(struct rvt_dev_info rdi, struct rvt_qpn_table qpt,
	enum ib_qp_type type, u8 port, gfp_t gfp);

	#ifdef CONFIG_DEBUG_FS

	struct qib_qp_iter;

	struct qib_qp_iter qib_qp_iter_init(struct qib_ibdev dev);

	int qib_qp_iter_next(struct qib_qp_iter *iter);

	void qib_qp_iter_print(struct seq_file s, struct qib_qp_iter iter);

	#endif

	void qib_get_credit(struct rvt_qp *qp, u32 aeth);

	unsigned qib_pkt_delay(u32 plen, u8 snd_mult, u8 rcv_mult);

	void qib_verbs_sdma_desc_avail(struct qib_pportdata *ppd, unsigned avail);

	void qib_put_txreq(struct qib_verbs_txreq *tx);

	int qib_verbs_send(struct rvt_qp qp, struct qib_ib_header hdr,
	u32 hdrwords, struct rvt_sge_state *ss, u32 len);

	void qib_copy_sge(struct rvt_sge_state ss, void data, u32 length,
	int release);

	void qib_skip_sge(struct rvt_sge_state *ss, u32 length, int release);

	void qib_uc_rcv(struct qib_ibport ibp, struct qib_ib_header hdr,
	int has_grh, void data, u32 tlen, struct rvt_qp qp);

	void qib_rc_rcv(struct qib_ctxtdata rcd, struct qib_ib_header hdr,
	int has_grh, void data, u32 tlen, struct rvt_qp qp);

	int qib_check_ah(struct ib_device ibdev, struct ib_ah_attr ah_attr);

	int qib_check_send_wqe(struct rvt_qp qp, struct rvt_swqe wqe);

	struct ib_ah qib_create_qp0_ah(struct qib_ibport ibp, u16 dlid);

	void qib_rc_rnr_retry(unsigned long arg);

	void qib_rc_send_complete(struct rvt_qp qp, struct qib_ib_header hdr);

	void qib_rc_error(struct rvt_qp *qp, enum ib_wc_status err);

	int qib_post_ud_send(struct rvt_qp qp, struct ib_send_wr wr);

	void qib_ud_rcv(struct qib_ibport ibp, struct qib_ib_header hdr,
	int has_grh, void data, u32 tlen, struct rvt_qp qp);

	void mr_rcu_callback(struct rcu_head *list);

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

	void qib_migrate_qp(struct rvt_qp *qp);

	int qib_ruc_check_hdr(struct qib_ibport ibp, struct qib_ib_header hdr,
	int has_grh, struct rvt_qp *qp, u32 bth0);

	u32 qib_make_grh(struct qib_ibport ibp, struct ib_grh hdr,
	struct ib_global_route *grh, u32 hwords, u32 nwords);

	void qib_make_ruc_header(struct rvt_qp qp, struct qib_other_headers ohdr,
	u32 bth0, u32 bth2);

	void _qib_do_send(struct work_struct *work);

	void qib_do_send(struct rvt_qp *qp);

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

	void qib_send_rc_ack(struct rvt_qp *qp);

	int qib_make_rc_req(struct rvt_qp qp, unsigned long flags);

	int qib_make_uc_req(struct rvt_qp qp, unsigned long flags);

	int qib_make_ud_req(struct rvt_qp qp, unsigned long flags);

	int qib_register_ib_device(struct qib_devdata *);

	void qib_unregister_ib_device(struct qib_devdata *);

	void qib_ib_rcv(struct qib_ctxtdata , void , void *, u32);

	void qib_ib_piobufavail(struct qib_devdata *);

	unsigned qib_get_npkeys(struct qib_devdata *);

	unsigned qib_get_pkey(struct qib_ibport *, unsigned);

	extern const enum ib_wc_opcode ib_qib_wc_opcode[];

	/*
	* Below HCA-independent IB PhysPortState values, returned
	* by the f_ibphys_portstate() routine.
	*/
	#define IB_PHYSPORTSTATE_SLEEP 1
	#define IB_PHYSPORTSTATE_POLL 2
	#define IB_PHYSPORTSTATE_DISABLED 3
	#define IB_PHYSPORTSTATE_CFG_TRAIN 4
	#define IB_PHYSPORTSTATE_LINKUP 5
	#define IB_PHYSPORTSTATE_LINK_ERR_RECOVER 6
	#define IB_PHYSPORTSTATE_CFG_DEBOUNCE 8
	#define IB_PHYSPORTSTATE_CFG_IDLE 0xB
	#define IB_PHYSPORTSTATE_RECOVERY_RETRAIN 0xC
	#define IB_PHYSPORTSTATE_RECOVERY_WAITRMT 0xE
	#define IB_PHYSPORTSTATE_RECOVERY_IDLE 0xF
	#define IB_PHYSPORTSTATE_CFG_ENH 0x10
	#define IB_PHYSPORTSTATE_CFG_WAIT_ENH 0x13

	extern const int ib_rvt_state_ops[];

	extern __be64 ib_qib_sys_image_guid; /* in network order */

	extern unsigned int ib_rvt_lkey_table_size;

	extern unsigned int ib_qib_max_cqes;

	extern unsigned int ib_qib_max_cqs;

	extern unsigned int ib_qib_max_qp_wrs;

	extern unsigned int ib_qib_max_qps;

	extern unsigned int ib_qib_max_sges;

	extern unsigned int ib_qib_max_mcast_grps;

	extern unsigned int ib_qib_max_mcast_qp_attached;

	extern unsigned int ib_qib_max_srqs;

	extern unsigned int ib_qib_max_srq_sges;

	extern unsigned int ib_qib_max_srq_wrs;

	extern const u32 ib_qib_rnr_table[];

	#endif /* QIB_VERBS_H */