diff options
Diffstat (limited to 'drivers/infiniband/hw/qib/qib_verbs.h')
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_verbs.h | 402 |
1 files changed, 402 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/qib/qib_verbs.h b/drivers/infiniband/hw/qib/qib_verbs.h new file mode 100644 index 000000000..07548fac1 --- /dev/null +++ b/drivers/infiniband/hw/qib/qib_verbs.h @@ -0,0 +1,402 @@ +/* + * Copyright (c) 2012 - 2018 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/ib_hdrs.h> +#include <rdma/rdmavt_qp.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 + +/* 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_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 qib_pio_header { + __le32 pbc[2]; + struct 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 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 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)); +} + +bool _qib_schedule_send(struct rvt_qp *qp); +bool 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_pkey(struct qib_ibport *ibp, u32 key, u32 sl, + u32 qp1, u32 qp2, __be16 lid1, __be16 lid2); +void qib_cap_mask_chg(struct rvt_dev_info *rdi, u32 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, u32 port_num, + const struct ib_wc *in_wc, const struct ib_grh *in_grh, + const struct ib_mad *in, struct ib_mad *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); + +/* + * 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); +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, u32 port); +void qib_restart_rc(struct rvt_qp *qp, u32 psn, int wait); +#ifdef CONFIG_DEBUG_FS + +void qib_qp_iter_print(struct seq_file *s, struct rvt_qp_iter *iter); + +#endif + +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 ib_header *hdr, + u32 hdrwords, struct rvt_sge_state *ss, u32 len); + +void qib_uc_rcv(struct qib_ibport *ibp, struct ib_header *hdr, + int has_grh, void *data, u32 tlen, struct rvt_qp *qp); + +void qib_rc_rcv(struct qib_ctxtdata *rcd, struct ib_header *hdr, + int has_grh, void *data, u32 tlen, struct rvt_qp *qp); + +int qib_check_ah(struct ib_device *ibdev, struct rdma_ah_attr *ah_attr); + +int qib_check_send_wqe(struct rvt_qp *qp, struct rvt_swqe *wqe, + bool *call_send); + +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 ib_header *hdr); + +int qib_post_ud_send(struct rvt_qp *qp, const struct ib_send_wr *wr); + +void qib_ud_rcv(struct qib_ibport *ibp, struct ib_header *hdr, + int has_grh, void *data, u32 tlen, struct rvt_qp *qp); + +void mr_rcu_callback(struct rcu_head *list); + +void qib_migrate_qp(struct rvt_qp *qp); + +int qib_ruc_check_hdr(struct qib_ibport *ibp, struct ib_header *hdr, + int has_grh, struct rvt_qp *qp, u32 bth0); + +u32 qib_make_grh(struct qib_ibport *ibp, struct ib_grh *hdr, + const struct ib_global_route *grh, u32 hwords, u32 nwords); + +void qib_make_ruc_header(struct rvt_qp *qp, struct ib_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_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[]; + +extern const struct rvt_operation_params qib_post_parms[]; + +#endif /* QIB_VERBS_H */ |