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 two 7 * licenses. You may choose to be licensed under the terms of the GNU 8 * General Public License (GPL) Version 2, available from the file 9 * COPYING in the main directory of this source tree, or the 10 * OpenIB.org BSD license below: 11 * 12 * Redistribution and use in source and binary forms, with or 13 * without modification, are permitted provided that the following 14 * conditions are met: 15 * 16 * - Redistributions of source code must retain the above 17 * copyright notice, this list of conditions and the following 18 * disclaimer. 19 * 20 * - Redistributions in binary form must reproduce the above 21 * copyright notice, this list of conditions and the following 22 * disclaimer in the documentation and/or other materials 23 * 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 OF 27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 32 * SOFTWARE. 33 */ 34 35 #ifndef QIB_VERBS_H 36 #define QIB_VERBS_H 37 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 52 struct qib_ctxtdata; 53 struct qib_pportdata; 54 struct qib_devdata; 55 struct qib_verbs_txreq; 56 57 #define QIB_MAX_RDMA_ATOMIC 16 58 #define QIB_GUIDS_PER_PORT 5 59 #define QIB_PSN_SHIFT 8 60 61 /* 62 * Increment this value if any changes that break userspace ABI 63 * compatibility are made. 64 */ 65 #define QIB_UVERBS_ABI_VERSION 2 66 67 /* IB Performance Manager status values */ 68 #define IB_PMA_SAMPLE_STATUS_DONE 0x00 69 #define IB_PMA_SAMPLE_STATUS_STARTED 0x01 70 #define IB_PMA_SAMPLE_STATUS_RUNNING 0x02 71 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 1 85 #define IB_VL_VL0_1 2 86 #define IB_VL_VL0_3 3 87 #define IB_VL_VL0_7 4 88 #define IB_VL_VL0_14 5 89 qib_num_vls(int vls)90 static 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 } 106 107 struct 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 pair 114 * is made common. 115 */ 116 struct 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 16 127 128 struct qib_opcode_stats { 129 u64 n_packets; /* number of packets */ 130 u64 n_bytes; /* total number of bytes */ 131 }; 132 133 struct qib_opcode_stats_perctx { 134 struct qib_opcode_stats stats[128]; 135 }; 136 137 struct 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 }; 143 144 struct 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 }; 168 169 struct 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_FS 185 /* per HCA debugfs */ 186 struct dentry *qib_ibdev_dbg; 187 #endif 188 }; 189 190 struct 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 to_idev(struct ib_device * ibdev)206 static 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 either 216 * a RC response is pending or we can process send work requests. 217 */ qib_send_ok(struct rvt_qp * qp)218 static 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 } 224 225 bool _qib_schedule_send(struct rvt_qp *qp); 226 bool qib_schedule_send(struct rvt_qp *qp); 227 qib_pkey_ok(u16 pkey1,u16 pkey2)228 static 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, and 235 * one of the two must be a full member. 236 */ 237 return p1 && p1 == p2 && ((__s16)pkey1 < 0 || (__s16)pkey2 < 0); 238 } 239 240 void qib_bad_pkey(struct qib_ibport *ibp, u32 key, u32 sl, 241 u32 qp1, u32 qp2, __be16 lid1, __be16 lid2); 242 void qib_cap_mask_chg(struct rvt_dev_info *rdi, u32 port_num); 243 void qib_sys_guid_chg(struct qib_ibport *ibp); 244 void qib_node_desc_chg(struct qib_ibport *ibp); 245 int 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); 249 void qib_notify_create_mad_agent(struct rvt_dev_info *rdi, int port_idx); 250 void 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 */ qib_cmp24(u32 a,u32 b)256 static inline int qib_cmp24(u32 a, u32 b) 257 { 258 return (((int) a) - ((int) b)) << 8; 259 } 260 261 int qib_snapshot_counters(struct qib_pportdata *ppd, u64 *swords, 262 u64 *rwords, u64 *spkts, u64 *rpkts, 263 u64 *xmit_wait); 264 265 int qib_get_counters(struct qib_pportdata *ppd, 266 struct qib_verbs_counters *cntrs); 267 268 /* 269 * Functions provided by qib driver for rdmavt to use 270 */ 271 unsigned qib_free_all_qps(struct rvt_dev_info *rdi); 272 void *qib_qp_priv_alloc(struct rvt_dev_info *rdi, struct rvt_qp *qp); 273 void qib_qp_priv_free(struct rvt_dev_info *rdi, struct rvt_qp *qp); 274 void qib_notify_qp_reset(struct rvt_qp *qp); 275 int qib_alloc_qpn(struct rvt_dev_info *rdi, struct rvt_qpn_table *qpt, 276 enum ib_qp_type type, u32 port); 277 void qib_restart_rc(struct rvt_qp *qp, u32 psn, int wait); 278 #ifdef CONFIG_DEBUG_FS 279 280 void qib_qp_iter_print(struct seq_file *s, struct rvt_qp_iter *iter); 281 282 #endif 283 284 unsigned qib_pkt_delay(u32 plen, u8 snd_mult, u8 rcv_mult); 285 286 void qib_verbs_sdma_desc_avail(struct qib_pportdata *ppd, unsigned avail); 287 288 void qib_put_txreq(struct qib_verbs_txreq *tx); 289 290 int qib_verbs_send(struct rvt_qp *qp, struct ib_header *hdr, 291 u32 hdrwords, struct rvt_sge_state *ss, u32 len); 292 293 void qib_uc_rcv(struct qib_ibport *ibp, struct ib_header *hdr, 294 int has_grh, void *data, u32 tlen, struct rvt_qp *qp); 295 296 void qib_rc_rcv(struct qib_ctxtdata *rcd, struct ib_header *hdr, 297 int has_grh, void *data, u32 tlen, struct rvt_qp *qp); 298 299 int qib_check_ah(struct ib_device *ibdev, struct rdma_ah_attr *ah_attr); 300 301 int qib_check_send_wqe(struct rvt_qp *qp, struct rvt_swqe *wqe, 302 bool *call_send); 303 304 struct ib_ah *qib_create_qp0_ah(struct qib_ibport *ibp, u16 dlid); 305 306 void qib_rc_send_complete(struct rvt_qp *qp, struct ib_header *hdr); 307 308 int qib_post_ud_send(struct rvt_qp *qp, const struct ib_send_wr *wr); 309 310 void qib_ud_rcv(struct qib_ibport *ibp, struct ib_header *hdr, 311 int has_grh, void *data, u32 tlen, struct rvt_qp *qp); 312 313 void qib_migrate_qp(struct rvt_qp *qp); 314 315 int qib_ruc_check_hdr(struct qib_ibport *ibp, struct ib_header *hdr, 316 int has_grh, struct rvt_qp *qp, u32 bth0); 317 318 u32 qib_make_grh(struct qib_ibport *ibp, struct ib_grh *hdr, 319 const struct ib_global_route *grh, u32 hwords, u32 nwords); 320 321 void qib_make_ruc_header(struct rvt_qp *qp, struct ib_other_headers *ohdr, 322 u32 bth0, u32 bth2); 323 324 void _qib_do_send(struct work_struct *work); 325 326 void qib_do_send(struct rvt_qp *qp); 327 328 void qib_send_rc_ack(struct rvt_qp *qp); 329 330 int qib_make_rc_req(struct rvt_qp *qp, unsigned long *flags); 331 332 int qib_make_uc_req(struct rvt_qp *qp, unsigned long *flags); 333 334 int qib_make_ud_req(struct rvt_qp *qp, unsigned long *flags); 335 336 int qib_register_ib_device(struct qib_devdata *); 337 338 void qib_unregister_ib_device(struct qib_devdata *); 339 340 void qib_ib_rcv(struct qib_ctxtdata *, void *, void *, u32); 341 342 void qib_ib_piobufavail(struct qib_devdata *); 343 344 unsigned qib_get_npkeys(struct qib_devdata *); 345 346 unsigned qib_get_pkey(struct qib_ibport *, unsigned); 347 348 extern const enum ib_wc_opcode ib_qib_wc_opcode[]; 349 350 /* 351 * Below HCA-independent IB PhysPortState values, returned 352 * by the f_ibphys_portstate() routine. 353 */ 354 #define IB_PHYSPORTSTATE_SLEEP 1 355 #define IB_PHYSPORTSTATE_POLL 2 356 #define IB_PHYSPORTSTATE_DISABLED 3 357 #define IB_PHYSPORTSTATE_CFG_TRAIN 4 358 #define IB_PHYSPORTSTATE_LINKUP 5 359 #define IB_PHYSPORTSTATE_LINK_ERR_RECOVER 6 360 #define IB_PHYSPORTSTATE_CFG_DEBOUNCE 8 361 #define IB_PHYSPORTSTATE_CFG_IDLE 0xB 362 #define IB_PHYSPORTSTATE_RECOVERY_RETRAIN 0xC 363 #define IB_PHYSPORTSTATE_RECOVERY_WAITRMT 0xE 364 #define IB_PHYSPORTSTATE_RECOVERY_IDLE 0xF 365 #define IB_PHYSPORTSTATE_CFG_ENH 0x10 366 #define IB_PHYSPORTSTATE_CFG_WAIT_ENH 0x13 367 368 extern const int ib_rvt_state_ops[]; 369 370 extern __be64 ib_qib_sys_image_guid; /* in network order */ 371 372 extern unsigned int ib_rvt_lkey_table_size; 373 374 extern unsigned int ib_qib_max_cqes; 375 376 extern unsigned int ib_qib_max_cqs; 377 378 extern unsigned int ib_qib_max_qp_wrs; 379 380 extern unsigned int ib_qib_max_qps; 381 382 extern unsigned int ib_qib_max_sges; 383 384 extern unsigned int ib_qib_max_mcast_grps; 385 386 extern unsigned int ib_qib_max_mcast_qp_attached; 387 388 extern unsigned int ib_qib_max_srqs; 389 390 extern unsigned int ib_qib_max_srq_sges; 391 392 extern unsigned int ib_qib_max_srq_wrs; 393 394 extern const u32 ib_qib_rnr_table[]; 395 396 extern const struct rvt_operation_params qib_post_parms[]; 397 398 #endif /* QIB_VERBS_H */ 399