1 /* 2 * Copyright (c) 2012, 2013 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/rdma_vt.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 /* XXX Should be defined in ib_verbs.h enum ib_port_cap_flags */ 82 #define IB_PORT_OTHER_LOCAL_CHANGES_SUP (1 << 26) 83 84 #define IB_DEFAULT_GID_PREFIX cpu_to_be64(0xfe80000000000000ULL) 85 86 /* Values for set/get portinfo VLCap OperationalVLs */ 87 #define IB_VL_VL0 1 88 #define IB_VL_VL0_1 2 89 #define IB_VL_VL0_3 3 90 #define IB_VL_VL0_7 4 91 #define IB_VL_VL0_14 5 92 93 static inline int qib_num_vls(int vls) 94 { 95 switch (vls) { 96 default: 97 case IB_VL_VL0: 98 return 1; 99 case IB_VL_VL0_1: 100 return 2; 101 case IB_VL_VL0_3: 102 return 4; 103 case IB_VL_VL0_7: 104 return 8; 105 case IB_VL_VL0_14: 106 return 15; 107 } 108 } 109 110 struct qib_pio_header { 111 __le32 pbc[2]; 112 struct ib_header hdr; 113 } __packed; 114 115 /* 116 * qib specific data structure that will be hidden from rvt after the queue pair 117 * is made common. 118 */ 119 struct qib_qp_priv { 120 struct ib_header *s_hdr; /* next packet header to send */ 121 struct list_head iowait; /* link for wait PIO buf */ 122 atomic_t s_dma_busy; 123 struct qib_verbs_txreq *s_tx; 124 struct work_struct s_work; 125 wait_queue_head_t wait_dma; 126 struct rvt_qp *owner; 127 }; 128 129 #define QIB_PSN_CREDIT 16 130 131 struct qib_opcode_stats { 132 u64 n_packets; /* number of packets */ 133 u64 n_bytes; /* total number of bytes */ 134 }; 135 136 struct qib_opcode_stats_perctx { 137 struct qib_opcode_stats stats[128]; 138 }; 139 140 struct qib_pma_counters { 141 u64 n_unicast_xmit; /* total unicast packets sent */ 142 u64 n_unicast_rcv; /* total unicast packets received */ 143 u64 n_multicast_xmit; /* total multicast packets sent */ 144 u64 n_multicast_rcv; /* total multicast packets received */ 145 }; 146 147 struct qib_ibport { 148 struct rvt_ibport rvp; 149 struct rvt_ah *smi_ah; 150 __be64 guids[QIB_GUIDS_PER_PORT - 1]; /* writable GUIDs */ 151 struct qib_pma_counters __percpu *pmastats; 152 u64 z_unicast_xmit; /* starting count for PMA */ 153 u64 z_unicast_rcv; /* starting count for PMA */ 154 u64 z_multicast_xmit; /* starting count for PMA */ 155 u64 z_multicast_rcv; /* starting count for PMA */ 156 u64 z_symbol_error_counter; /* starting count for PMA */ 157 u64 z_link_error_recovery_counter; /* starting count for PMA */ 158 u64 z_link_downed_counter; /* starting count for PMA */ 159 u64 z_port_rcv_errors; /* starting count for PMA */ 160 u64 z_port_rcv_remphys_errors; /* starting count for PMA */ 161 u64 z_port_xmit_discards; /* starting count for PMA */ 162 u64 z_port_xmit_data; /* starting count for PMA */ 163 u64 z_port_rcv_data; /* starting count for PMA */ 164 u64 z_port_xmit_packets; /* starting count for PMA */ 165 u64 z_port_rcv_packets; /* starting count for PMA */ 166 u32 z_local_link_integrity_errors; /* starting count for PMA */ 167 u32 z_excessive_buffer_overrun_errors; /* starting count for PMA */ 168 u32 z_vl15_dropped; /* starting count for PMA */ 169 u8 sl_to_vl[16]; 170 }; 171 172 struct qib_ibdev { 173 struct rvt_dev_info rdi; 174 175 struct list_head piowait; /* list for wait PIO buf */ 176 struct list_head dmawait; /* list for wait DMA */ 177 struct list_head txwait; /* list for wait qib_verbs_txreq */ 178 struct list_head memwait; /* list for wait kernel memory */ 179 struct list_head txreq_free; 180 struct timer_list mem_timer; 181 struct qib_pio_header *pio_hdrs; 182 dma_addr_t pio_hdrs_phys; 183 u32 qp_rnd; /* random bytes for hash */ 184 185 u32 n_piowait; 186 u32 n_txwait; 187 188 #ifdef CONFIG_DEBUG_FS 189 /* per HCA debugfs */ 190 struct dentry *qib_ibdev_dbg; 191 #endif 192 }; 193 194 struct qib_verbs_counters { 195 u64 symbol_error_counter; 196 u64 link_error_recovery_counter; 197 u64 link_downed_counter; 198 u64 port_rcv_errors; 199 u64 port_rcv_remphys_errors; 200 u64 port_xmit_discards; 201 u64 port_xmit_data; 202 u64 port_rcv_data; 203 u64 port_xmit_packets; 204 u64 port_rcv_packets; 205 u32 local_link_integrity_errors; 206 u32 excessive_buffer_overrun_errors; 207 u32 vl15_dropped; 208 }; 209 210 static inline struct qib_ibdev *to_idev(struct ib_device *ibdev) 211 { 212 struct rvt_dev_info *rdi; 213 214 rdi = container_of(ibdev, struct rvt_dev_info, ibdev); 215 return container_of(rdi, struct qib_ibdev, rdi); 216 } 217 218 /* 219 * Send if not busy or waiting for I/O and either 220 * a RC response is pending or we can process send work requests. 221 */ 222 static inline int qib_send_ok(struct rvt_qp *qp) 223 { 224 return !(qp->s_flags & (RVT_S_BUSY | RVT_S_ANY_WAIT_IO)) && 225 (qp->s_hdrwords || (qp->s_flags & RVT_S_RESP_PENDING) || 226 !(qp->s_flags & RVT_S_ANY_WAIT_SEND)); 227 } 228 229 void _qib_schedule_send(struct rvt_qp *qp); 230 void qib_schedule_send(struct rvt_qp *qp); 231 232 static inline int qib_pkey_ok(u16 pkey1, u16 pkey2) 233 { 234 u16 p1 = pkey1 & 0x7FFF; 235 u16 p2 = pkey2 & 0x7FFF; 236 237 /* 238 * Low 15 bits must be non-zero and match, and 239 * one of the two must be a full member. 240 */ 241 return p1 && p1 == p2 && ((__s16)pkey1 < 0 || (__s16)pkey2 < 0); 242 } 243 244 void qib_bad_pqkey(struct qib_ibport *ibp, __be16 trap_num, u32 key, u32 sl, 245 u32 qp1, u32 qp2, __be16 lid1, __be16 lid2); 246 void qib_cap_mask_chg(struct rvt_dev_info *rdi, u8 port_num); 247 void qib_sys_guid_chg(struct qib_ibport *ibp); 248 void qib_node_desc_chg(struct qib_ibport *ibp); 249 int qib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num, 250 const struct ib_wc *in_wc, const struct ib_grh *in_grh, 251 const struct ib_mad_hdr *in, size_t in_mad_size, 252 struct ib_mad_hdr *out, size_t *out_mad_size, 253 u16 *out_mad_pkey_index); 254 void qib_notify_create_mad_agent(struct rvt_dev_info *rdi, int port_idx); 255 void qib_notify_free_mad_agent(struct rvt_dev_info *rdi, int port_idx); 256 257 /* 258 * Compare the lower 24 bits of the two values. 259 * Returns an integer <, ==, or > than zero. 260 */ 261 static inline int qib_cmp24(u32 a, u32 b) 262 { 263 return (((int) a) - ((int) b)) << 8; 264 } 265 266 int qib_snapshot_counters(struct qib_pportdata *ppd, u64 *swords, 267 u64 *rwords, u64 *spkts, u64 *rpkts, 268 u64 *xmit_wait); 269 270 int qib_get_counters(struct qib_pportdata *ppd, 271 struct qib_verbs_counters *cntrs); 272 273 /* 274 * Functions provided by qib driver for rdmavt to use 275 */ 276 unsigned qib_free_all_qps(struct rvt_dev_info *rdi); 277 void *qib_qp_priv_alloc(struct rvt_dev_info *rdi, struct rvt_qp *qp, gfp_t gfp); 278 void qib_qp_priv_free(struct rvt_dev_info *rdi, struct rvt_qp *qp); 279 void qib_notify_qp_reset(struct rvt_qp *qp); 280 int qib_alloc_qpn(struct rvt_dev_info *rdi, struct rvt_qpn_table *qpt, 281 enum ib_qp_type type, u8 port, gfp_t gfp); 282 void qib_restart_rc(struct rvt_qp *qp, u32 psn, int wait); 283 #ifdef CONFIG_DEBUG_FS 284 285 struct qib_qp_iter; 286 287 struct qib_qp_iter *qib_qp_iter_init(struct qib_ibdev *dev); 288 289 int qib_qp_iter_next(struct qib_qp_iter *iter); 290 291 void qib_qp_iter_print(struct seq_file *s, struct qib_qp_iter *iter); 292 293 #endif 294 295 unsigned qib_pkt_delay(u32 plen, u8 snd_mult, u8 rcv_mult); 296 297 void qib_verbs_sdma_desc_avail(struct qib_pportdata *ppd, unsigned avail); 298 299 void qib_put_txreq(struct qib_verbs_txreq *tx); 300 301 int qib_verbs_send(struct rvt_qp *qp, struct ib_header *hdr, 302 u32 hdrwords, struct rvt_sge_state *ss, u32 len); 303 304 void qib_copy_sge(struct rvt_sge_state *ss, void *data, u32 length, 305 int release); 306 307 void qib_uc_rcv(struct qib_ibport *ibp, struct ib_header *hdr, 308 int has_grh, void *data, u32 tlen, struct rvt_qp *qp); 309 310 void qib_rc_rcv(struct qib_ctxtdata *rcd, struct ib_header *hdr, 311 int has_grh, void *data, u32 tlen, struct rvt_qp *qp); 312 313 int qib_check_ah(struct ib_device *ibdev, struct ib_ah_attr *ah_attr); 314 315 int qib_check_send_wqe(struct rvt_qp *qp, struct rvt_swqe *wqe); 316 317 struct ib_ah *qib_create_qp0_ah(struct qib_ibport *ibp, u16 dlid); 318 319 void qib_rc_rnr_retry(unsigned long arg); 320 321 void qib_rc_send_complete(struct rvt_qp *qp, struct ib_header *hdr); 322 323 int qib_post_ud_send(struct rvt_qp *qp, struct ib_send_wr *wr); 324 325 void qib_ud_rcv(struct qib_ibport *ibp, struct ib_header *hdr, 326 int has_grh, void *data, u32 tlen, struct rvt_qp *qp); 327 328 void mr_rcu_callback(struct rcu_head *list); 329 330 int qib_get_rwqe(struct rvt_qp *qp, int wr_id_only); 331 332 void qib_migrate_qp(struct rvt_qp *qp); 333 334 int qib_ruc_check_hdr(struct qib_ibport *ibp, struct ib_header *hdr, 335 int has_grh, struct rvt_qp *qp, u32 bth0); 336 337 u32 qib_make_grh(struct qib_ibport *ibp, struct ib_grh *hdr, 338 struct ib_global_route *grh, u32 hwords, u32 nwords); 339 340 void qib_make_ruc_header(struct rvt_qp *qp, struct ib_other_headers *ohdr, 341 u32 bth0, u32 bth2); 342 343 void _qib_do_send(struct work_struct *work); 344 345 void qib_do_send(struct rvt_qp *qp); 346 347 void qib_send_complete(struct rvt_qp *qp, struct rvt_swqe *wqe, 348 enum ib_wc_status status); 349 350 void qib_send_rc_ack(struct rvt_qp *qp); 351 352 int qib_make_rc_req(struct rvt_qp *qp, unsigned long *flags); 353 354 int qib_make_uc_req(struct rvt_qp *qp, unsigned long *flags); 355 356 int qib_make_ud_req(struct rvt_qp *qp, unsigned long *flags); 357 358 int qib_register_ib_device(struct qib_devdata *); 359 360 void qib_unregister_ib_device(struct qib_devdata *); 361 362 void qib_ib_rcv(struct qib_ctxtdata *, void *, void *, u32); 363 364 void qib_ib_piobufavail(struct qib_devdata *); 365 366 unsigned qib_get_npkeys(struct qib_devdata *); 367 368 unsigned qib_get_pkey(struct qib_ibport *, unsigned); 369 370 extern const enum ib_wc_opcode ib_qib_wc_opcode[]; 371 372 /* 373 * Below HCA-independent IB PhysPortState values, returned 374 * by the f_ibphys_portstate() routine. 375 */ 376 #define IB_PHYSPORTSTATE_SLEEP 1 377 #define IB_PHYSPORTSTATE_POLL 2 378 #define IB_PHYSPORTSTATE_DISABLED 3 379 #define IB_PHYSPORTSTATE_CFG_TRAIN 4 380 #define IB_PHYSPORTSTATE_LINKUP 5 381 #define IB_PHYSPORTSTATE_LINK_ERR_RECOVER 6 382 #define IB_PHYSPORTSTATE_CFG_DEBOUNCE 8 383 #define IB_PHYSPORTSTATE_CFG_IDLE 0xB 384 #define IB_PHYSPORTSTATE_RECOVERY_RETRAIN 0xC 385 #define IB_PHYSPORTSTATE_RECOVERY_WAITRMT 0xE 386 #define IB_PHYSPORTSTATE_RECOVERY_IDLE 0xF 387 #define IB_PHYSPORTSTATE_CFG_ENH 0x10 388 #define IB_PHYSPORTSTATE_CFG_WAIT_ENH 0x13 389 390 extern const int ib_rvt_state_ops[]; 391 392 extern __be64 ib_qib_sys_image_guid; /* in network order */ 393 394 extern unsigned int ib_rvt_lkey_table_size; 395 396 extern unsigned int ib_qib_max_cqes; 397 398 extern unsigned int ib_qib_max_cqs; 399 400 extern unsigned int ib_qib_max_qp_wrs; 401 402 extern unsigned int ib_qib_max_qps; 403 404 extern unsigned int ib_qib_max_sges; 405 406 extern unsigned int ib_qib_max_mcast_grps; 407 408 extern unsigned int ib_qib_max_mcast_qp_attached; 409 410 extern unsigned int ib_qib_max_srqs; 411 412 extern unsigned int ib_qib_max_srq_sges; 413 414 extern unsigned int ib_qib_max_srq_wrs; 415 416 extern const u32 ib_qib_rnr_table[]; 417 418 extern const struct rvt_operation_params qib_post_parms[]; 419 420 #endif /* QIB_VERBS_H */ 421