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1/*2 * Copyright (c) 2012 - 2018 Intel Corporation. All rights reserved.3 * Copyright (c) 2006 - 2012 QLogic Corporation. All rights reserved.4 * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved.5 *6 * This software is available to you under a choice of one of two7 * licenses. You may choose to be licensed under the terms of the GNU8 * General Public License (GPL) Version 2, available from the file9 * COPYING in the main directory of this source tree, or the10 * OpenIB.org BSD license below:11 *12 * Redistribution and use in source and binary forms, with or13 * without modification, are permitted provided that the following14 * conditions are met:15 *16 * - Redistributions of source code must retain the above17 * copyright notice, this list of conditions and the following18 * disclaimer.19 *20 * - Redistributions in binary form must reproduce the above21 * copyright notice, this list of conditions and the following22 * disclaimer in the documentation and/or other materials23 * provided with the distribution.24 *25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE32 * SOFTWARE.33 */34 35#ifndef QIB_VERBS_H36#define QIB_VERBS_H37 38#include <linux/types.h>39#include <linux/spinlock.h>40#include <linux/kernel.h>41#include <linux/interrupt.h>42#include <linux/kref.h>43#include <linux/workqueue.h>44#include <linux/kthread.h>45#include <linux/completion.h>46#include <rdma/ib_pack.h>47#include <rdma/ib_user_verbs.h>48#include <rdma/ib_hdrs.h>49#include <rdma/rdmavt_qp.h>50#include <rdma/rdmavt_cq.h>51 52struct qib_ctxtdata;53struct qib_pportdata;54struct qib_devdata;55struct qib_verbs_txreq;56 57#define QIB_MAX_RDMA_ATOMIC 1658#define QIB_GUIDS_PER_PORT 559#define QIB_PSN_SHIFT 860 61/*62 * Increment this value if any changes that break userspace ABI63 * compatibility are made.64 */65#define QIB_UVERBS_ABI_VERSION 266 67/* IB Performance Manager status values */68#define IB_PMA_SAMPLE_STATUS_DONE 0x0069#define IB_PMA_SAMPLE_STATUS_STARTED 0x0170#define IB_PMA_SAMPLE_STATUS_RUNNING 0x0271 72/* Mandatory IB performance counter select values. */73#define IB_PMA_PORT_XMIT_DATA cpu_to_be16(0x0001)74#define IB_PMA_PORT_RCV_DATA cpu_to_be16(0x0002)75#define IB_PMA_PORT_XMIT_PKTS cpu_to_be16(0x0003)76#define IB_PMA_PORT_RCV_PKTS cpu_to_be16(0x0004)77#define IB_PMA_PORT_XMIT_WAIT cpu_to_be16(0x0005)78 79#define QIB_VENDOR_IPG cpu_to_be16(0xFFA0)80 81#define IB_DEFAULT_GID_PREFIX cpu_to_be64(0xfe80000000000000ULL)82 83/* Values for set/get portinfo VLCap OperationalVLs */84#define IB_VL_VL0 185#define IB_VL_VL0_1 286#define IB_VL_VL0_3 387#define IB_VL_VL0_7 488#define IB_VL_VL0_14 589 90static inline int qib_num_vls(int vls)91{92 switch (vls) {93 default:94 case IB_VL_VL0:95 return 1;96 case IB_VL_VL0_1:97 return 2;98 case IB_VL_VL0_3:99 return 4;100 case IB_VL_VL0_7:101 return 8;102 case IB_VL_VL0_14:103 return 15;104 }105}106 107struct qib_pio_header {108 __le32 pbc[2];109 struct ib_header hdr;110} __packed;111 112/*113 * qib specific data structure that will be hidden from rvt after the queue pair114 * is made common.115 */116struct qib_qp_priv {117 struct ib_header *s_hdr; /* next packet header to send */118 struct list_head iowait; /* link for wait PIO buf */119 atomic_t s_dma_busy;120 struct qib_verbs_txreq *s_tx;121 struct work_struct s_work;122 wait_queue_head_t wait_dma;123 struct rvt_qp *owner;124};125 126#define QIB_PSN_CREDIT 16127 128struct qib_opcode_stats {129 u64 n_packets; /* number of packets */130 u64 n_bytes; /* total number of bytes */131};132 133struct qib_opcode_stats_perctx {134 struct qib_opcode_stats stats[128];135};136 137struct qib_pma_counters {138 u64 n_unicast_xmit; /* total unicast packets sent */139 u64 n_unicast_rcv; /* total unicast packets received */140 u64 n_multicast_xmit; /* total multicast packets sent */141 u64 n_multicast_rcv; /* total multicast packets received */142};143 144struct qib_ibport {145 struct rvt_ibport rvp;146 struct rvt_ah *smi_ah;147 __be64 guids[QIB_GUIDS_PER_PORT - 1]; /* writable GUIDs */148 struct qib_pma_counters __percpu *pmastats;149 u64 z_unicast_xmit; /* starting count for PMA */150 u64 z_unicast_rcv; /* starting count for PMA */151 u64 z_multicast_xmit; /* starting count for PMA */152 u64 z_multicast_rcv; /* starting count for PMA */153 u64 z_symbol_error_counter; /* starting count for PMA */154 u64 z_link_error_recovery_counter; /* starting count for PMA */155 u64 z_link_downed_counter; /* starting count for PMA */156 u64 z_port_rcv_errors; /* starting count for PMA */157 u64 z_port_rcv_remphys_errors; /* starting count for PMA */158 u64 z_port_xmit_discards; /* starting count for PMA */159 u64 z_port_xmit_data; /* starting count for PMA */160 u64 z_port_rcv_data; /* starting count for PMA */161 u64 z_port_xmit_packets; /* starting count for PMA */162 u64 z_port_rcv_packets; /* starting count for PMA */163 u32 z_local_link_integrity_errors; /* starting count for PMA */164 u32 z_excessive_buffer_overrun_errors; /* starting count for PMA */165 u32 z_vl15_dropped; /* starting count for PMA */166 u8 sl_to_vl[16];167};168 169struct qib_ibdev {170 struct rvt_dev_info rdi;171 172 struct list_head piowait; /* list for wait PIO buf */173 struct list_head dmawait; /* list for wait DMA */174 struct list_head txwait; /* list for wait qib_verbs_txreq */175 struct list_head memwait; /* list for wait kernel memory */176 struct list_head txreq_free;177 struct timer_list mem_timer;178 struct qib_pio_header *pio_hdrs;179 dma_addr_t pio_hdrs_phys;180 181 u32 n_piowait;182 u32 n_txwait;183 184#ifdef CONFIG_DEBUG_FS185 /* per HCA debugfs */186 struct dentry *qib_ibdev_dbg;187#endif188};189 190struct qib_verbs_counters {191 u64 symbol_error_counter;192 u64 link_error_recovery_counter;193 u64 link_downed_counter;194 u64 port_rcv_errors;195 u64 port_rcv_remphys_errors;196 u64 port_xmit_discards;197 u64 port_xmit_data;198 u64 port_rcv_data;199 u64 port_xmit_packets;200 u64 port_rcv_packets;201 u32 local_link_integrity_errors;202 u32 excessive_buffer_overrun_errors;203 u32 vl15_dropped;204};205 206static inline struct qib_ibdev *to_idev(struct ib_device *ibdev)207{208 struct rvt_dev_info *rdi;209 210 rdi = container_of(ibdev, struct rvt_dev_info, ibdev);211 return container_of(rdi, struct qib_ibdev, rdi);212}213 214/*215 * Send if not busy or waiting for I/O and either216 * a RC response is pending or we can process send work requests.217 */218static inline int qib_send_ok(struct rvt_qp *qp)219{220 return !(qp->s_flags & (RVT_S_BUSY | RVT_S_ANY_WAIT_IO)) &&221 (qp->s_hdrwords || (qp->s_flags & RVT_S_RESP_PENDING) ||222 !(qp->s_flags & RVT_S_ANY_WAIT_SEND));223}224 225bool _qib_schedule_send(struct rvt_qp *qp);226bool qib_schedule_send(struct rvt_qp *qp);227 228static inline int qib_pkey_ok(u16 pkey1, u16 pkey2)229{230 u16 p1 = pkey1 & 0x7FFF;231 u16 p2 = pkey2 & 0x7FFF;232 233 /*234 * Low 15 bits must be non-zero and match, and235 * one of the two must be a full member.236 */237 return p1 && p1 == p2 && ((__s16)pkey1 < 0 || (__s16)pkey2 < 0);238}239 240void qib_bad_pkey(struct qib_ibport *ibp, u32 key, u32 sl,241 u32 qp1, u32 qp2, __be16 lid1, __be16 lid2);242void qib_cap_mask_chg(struct rvt_dev_info *rdi, u32 port_num);243void qib_sys_guid_chg(struct qib_ibport *ibp);244void qib_node_desc_chg(struct qib_ibport *ibp);245int qib_process_mad(struct ib_device *ibdev, int mad_flags, u32 port_num,246 const struct ib_wc *in_wc, const struct ib_grh *in_grh,247 const struct ib_mad *in, struct ib_mad *out,248 size_t *out_mad_size, u16 *out_mad_pkey_index);249void qib_notify_create_mad_agent(struct rvt_dev_info *rdi, int port_idx);250void qib_notify_free_mad_agent(struct rvt_dev_info *rdi, int port_idx);251 252/*253 * Compare the lower 24 bits of the two values.254 * Returns an integer <, ==, or > than zero.255 */256static inline int qib_cmp24(u32 a, u32 b)257{258 return (((int) a) - ((int) b)) << 8;259}260 261int qib_snapshot_counters(struct qib_pportdata *ppd, u64 *swords,262 u64 *rwords, u64 *spkts, u64 *rpkts,263 u64 *xmit_wait);264 265int qib_get_counters(struct qib_pportdata *ppd,266 struct qib_verbs_counters *cntrs);267 268/*269 * Functions provided by qib driver for rdmavt to use270 */271unsigned qib_free_all_qps(struct rvt_dev_info *rdi);272void *qib_qp_priv_alloc(struct rvt_dev_info *rdi, struct rvt_qp *qp);273void qib_qp_priv_free(struct rvt_dev_info *rdi, struct rvt_qp *qp);274void qib_notify_qp_reset(struct rvt_qp *qp);275int qib_alloc_qpn(struct rvt_dev_info *rdi, struct rvt_qpn_table *qpt,276 enum ib_qp_type type, u32 port);277void qib_restart_rc(struct rvt_qp *qp, u32 psn, int wait);278#ifdef CONFIG_DEBUG_FS279 280void qib_qp_iter_print(struct seq_file *s, struct rvt_qp_iter *iter);281 282#endif283 284unsigned qib_pkt_delay(u32 plen, u8 snd_mult, u8 rcv_mult);285 286void qib_verbs_sdma_desc_avail(struct qib_pportdata *ppd, unsigned avail);287 288void qib_put_txreq(struct qib_verbs_txreq *tx);289 290int qib_verbs_send(struct rvt_qp *qp, struct ib_header *hdr,291 u32 hdrwords, struct rvt_sge_state *ss, u32 len);292 293void qib_uc_rcv(struct qib_ibport *ibp, struct ib_header *hdr,294 int has_grh, void *data, u32 tlen, struct rvt_qp *qp);295 296void qib_rc_rcv(struct qib_ctxtdata *rcd, struct ib_header *hdr,297 int has_grh, void *data, u32 tlen, struct rvt_qp *qp);298 299int qib_check_ah(struct ib_device *ibdev, struct rdma_ah_attr *ah_attr);300 301int qib_check_send_wqe(struct rvt_qp *qp, struct rvt_swqe *wqe,302 bool *call_send);303 304struct ib_ah *qib_create_qp0_ah(struct qib_ibport *ibp, u16 dlid);305 306void qib_rc_send_complete(struct rvt_qp *qp, struct ib_header *hdr);307 308int qib_post_ud_send(struct rvt_qp *qp, const struct ib_send_wr *wr);309 310void qib_ud_rcv(struct qib_ibport *ibp, struct ib_header *hdr,311 int has_grh, void *data, u32 tlen, struct rvt_qp *qp);312 313void qib_migrate_qp(struct rvt_qp *qp);314 315int qib_ruc_check_hdr(struct qib_ibport *ibp, struct ib_header *hdr,316 int has_grh, struct rvt_qp *qp, u32 bth0);317 318u32 qib_make_grh(struct qib_ibport *ibp, struct ib_grh *hdr,319 const struct ib_global_route *grh, u32 hwords, u32 nwords);320 321void qib_make_ruc_header(struct rvt_qp *qp, struct ib_other_headers *ohdr,322 u32 bth0, u32 bth2);323 324void _qib_do_send(struct work_struct *work);325 326void qib_do_send(struct rvt_qp *qp);327 328void qib_send_rc_ack(struct rvt_qp *qp);329 330int qib_make_rc_req(struct rvt_qp *qp, unsigned long *flags);331 332int qib_make_uc_req(struct rvt_qp *qp, unsigned long *flags);333 334int qib_make_ud_req(struct rvt_qp *qp, unsigned long *flags);335 336int qib_register_ib_device(struct qib_devdata *);337 338void qib_unregister_ib_device(struct qib_devdata *);339 340void qib_ib_rcv(struct qib_ctxtdata *, void *, void *, u32);341 342void qib_ib_piobufavail(struct qib_devdata *);343 344unsigned qib_get_npkeys(struct qib_devdata *);345 346unsigned qib_get_pkey(struct qib_ibport *, unsigned);347 348extern const enum ib_wc_opcode ib_qib_wc_opcode[];349 350/*351 * Below HCA-independent IB PhysPortState values, returned352 * by the f_ibphys_portstate() routine.353 */354#define IB_PHYSPORTSTATE_SLEEP 1355#define IB_PHYSPORTSTATE_POLL 2356#define IB_PHYSPORTSTATE_DISABLED 3357#define IB_PHYSPORTSTATE_CFG_TRAIN 4358#define IB_PHYSPORTSTATE_LINKUP 5359#define IB_PHYSPORTSTATE_LINK_ERR_RECOVER 6360#define IB_PHYSPORTSTATE_CFG_DEBOUNCE 8361#define IB_PHYSPORTSTATE_CFG_IDLE 0xB362#define IB_PHYSPORTSTATE_RECOVERY_RETRAIN 0xC363#define IB_PHYSPORTSTATE_RECOVERY_WAITRMT 0xE364#define IB_PHYSPORTSTATE_RECOVERY_IDLE 0xF365#define IB_PHYSPORTSTATE_CFG_ENH 0x10366#define IB_PHYSPORTSTATE_CFG_WAIT_ENH 0x13367 368extern const int ib_rvt_state_ops[];369 370extern __be64 ib_qib_sys_image_guid; /* in network order */371 372extern unsigned int ib_rvt_lkey_table_size;373 374extern unsigned int ib_qib_max_cqes;375 376extern unsigned int ib_qib_max_cqs;377 378extern unsigned int ib_qib_max_qp_wrs;379 380extern unsigned int ib_qib_max_qps;381 382extern unsigned int ib_qib_max_sges;383 384extern unsigned int ib_qib_max_mcast_grps;385 386extern unsigned int ib_qib_max_mcast_qp_attached;387 388extern unsigned int ib_qib_max_srqs;389 390extern unsigned int ib_qib_max_srq_sges;391 392extern unsigned int ib_qib_max_srq_wrs;393 394extern const u32 ib_qib_rnr_table[];395 396extern const struct rvt_operation_params qib_post_parms[];397 398#endif /* QIB_VERBS_H */399