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 u32 qp_rnd; /* random bytes for hash */
181
182 u32 n_piowait;
183 u32 n_txwait;
184
185 #ifdef CONFIG_DEBUG_FS
186 /* per HCA debugfs */
187 struct dentry *qib_ibdev_dbg;
188 #endif
189 };
190
191 struct qib_verbs_counters {
192 u64 symbol_error_counter;
193 u64 link_error_recovery_counter;
194 u64 link_downed_counter;
195 u64 port_rcv_errors;
196 u64 port_rcv_remphys_errors;
197 u64 port_xmit_discards;
198 u64 port_xmit_data;
199 u64 port_rcv_data;
200 u64 port_xmit_packets;
201 u64 port_rcv_packets;
202 u32 local_link_integrity_errors;
203 u32 excessive_buffer_overrun_errors;
204 u32 vl15_dropped;
205 };
206
to_idev(struct ib_device * ibdev)207 static inline struct qib_ibdev *to_idev(struct ib_device *ibdev)
208 {
209 struct rvt_dev_info *rdi;
210
211 rdi = container_of(ibdev, struct rvt_dev_info, ibdev);
212 return container_of(rdi, struct qib_ibdev, rdi);
213 }
214
215 /*
216 * Send if not busy or waiting for I/O and either
217 * a RC response is pending or we can process send work requests.
218 */
qib_send_ok(struct rvt_qp * qp)219 static inline int qib_send_ok(struct rvt_qp *qp)
220 {
221 return !(qp->s_flags & (RVT_S_BUSY | RVT_S_ANY_WAIT_IO)) &&
222 (qp->s_hdrwords || (qp->s_flags & RVT_S_RESP_PENDING) ||
223 !(qp->s_flags & RVT_S_ANY_WAIT_SEND));
224 }
225
226 bool _qib_schedule_send(struct rvt_qp *qp);
227 bool qib_schedule_send(struct rvt_qp *qp);
228
qib_pkey_ok(u16 pkey1,u16 pkey2)229 static inline int qib_pkey_ok(u16 pkey1, u16 pkey2)
230 {
231 u16 p1 = pkey1 & 0x7FFF;
232 u16 p2 = pkey2 & 0x7FFF;
233
234 /*
235 * Low 15 bits must be non-zero and match, and
236 * one of the two must be a full member.
237 */
238 return p1 && p1 == p2 && ((__s16)pkey1 < 0 || (__s16)pkey2 < 0);
239 }
240
241 void qib_bad_pkey(struct qib_ibport *ibp, u32 key, u32 sl,
242 u32 qp1, u32 qp2, __be16 lid1, __be16 lid2);
243 void qib_cap_mask_chg(struct rvt_dev_info *rdi, u8 port_num);
244 void qib_sys_guid_chg(struct qib_ibport *ibp);
245 void qib_node_desc_chg(struct qib_ibport *ibp);
246 int qib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
247 const struct ib_wc *in_wc, const struct ib_grh *in_grh,
248 const struct ib_mad_hdr *in, size_t in_mad_size,
249 struct ib_mad_hdr *out, size_t *out_mad_size,
250 u16 *out_mad_pkey_index);
251 void qib_notify_create_mad_agent(struct rvt_dev_info *rdi, int port_idx);
252 void qib_notify_free_mad_agent(struct rvt_dev_info *rdi, int port_idx);
253
254 /*
255 * Compare the lower 24 bits of the two values.
256 * Returns an integer <, ==, or > than zero.
257 */
qib_cmp24(u32 a,u32 b)258 static inline int qib_cmp24(u32 a, u32 b)
259 {
260 return (((int) a) - ((int) b)) << 8;
261 }
262
263 int qib_snapshot_counters(struct qib_pportdata *ppd, u64 *swords,
264 u64 *rwords, u64 *spkts, u64 *rpkts,
265 u64 *xmit_wait);
266
267 int qib_get_counters(struct qib_pportdata *ppd,
268 struct qib_verbs_counters *cntrs);
269
270 /*
271 * Functions provided by qib driver for rdmavt to use
272 */
273 unsigned qib_free_all_qps(struct rvt_dev_info *rdi);
274 void *qib_qp_priv_alloc(struct rvt_dev_info *rdi, struct rvt_qp *qp);
275 void qib_qp_priv_free(struct rvt_dev_info *rdi, struct rvt_qp *qp);
276 void qib_notify_qp_reset(struct rvt_qp *qp);
277 int qib_alloc_qpn(struct rvt_dev_info *rdi, struct rvt_qpn_table *qpt,
278 enum ib_qp_type type, u8 port);
279 void qib_restart_rc(struct rvt_qp *qp, u32 psn, int wait);
280 #ifdef CONFIG_DEBUG_FS
281
282 void qib_qp_iter_print(struct seq_file *s, struct rvt_qp_iter *iter);
283
284 #endif
285
286 unsigned qib_pkt_delay(u32 plen, u8 snd_mult, u8 rcv_mult);
287
288 void qib_verbs_sdma_desc_avail(struct qib_pportdata *ppd, unsigned avail);
289
290 void qib_put_txreq(struct qib_verbs_txreq *tx);
291
292 int qib_verbs_send(struct rvt_qp *qp, struct ib_header *hdr,
293 u32 hdrwords, struct rvt_sge_state *ss, u32 len);
294
295 void qib_uc_rcv(struct qib_ibport *ibp, struct ib_header *hdr,
296 int has_grh, void *data, u32 tlen, struct rvt_qp *qp);
297
298 void qib_rc_rcv(struct qib_ctxtdata *rcd, struct ib_header *hdr,
299 int has_grh, void *data, u32 tlen, struct rvt_qp *qp);
300
301 int qib_check_ah(struct ib_device *ibdev, struct rdma_ah_attr *ah_attr);
302
303 int qib_check_send_wqe(struct rvt_qp *qp, struct rvt_swqe *wqe,
304 bool *call_send);
305
306 struct ib_ah *qib_create_qp0_ah(struct qib_ibport *ibp, u16 dlid);
307
308 void qib_rc_rnr_retry(unsigned long arg);
309
310 void qib_rc_send_complete(struct rvt_qp *qp, struct ib_header *hdr);
311
312 int qib_post_ud_send(struct rvt_qp *qp, const struct ib_send_wr *wr);
313
314 void qib_ud_rcv(struct qib_ibport *ibp, struct ib_header *hdr,
315 int has_grh, void *data, u32 tlen, struct rvt_qp *qp);
316
317 void mr_rcu_callback(struct rcu_head *list);
318
319 void qib_migrate_qp(struct rvt_qp *qp);
320
321 int qib_ruc_check_hdr(struct qib_ibport *ibp, struct ib_header *hdr,
322 int has_grh, struct rvt_qp *qp, u32 bth0);
323
324 u32 qib_make_grh(struct qib_ibport *ibp, struct ib_grh *hdr,
325 const struct ib_global_route *grh, u32 hwords, u32 nwords);
326
327 void qib_make_ruc_header(struct rvt_qp *qp, struct ib_other_headers *ohdr,
328 u32 bth0, u32 bth2);
329
330 void _qib_do_send(struct work_struct *work);
331
332 void qib_do_send(struct rvt_qp *qp);
333
334 void qib_send_rc_ack(struct rvt_qp *qp);
335
336 int qib_make_rc_req(struct rvt_qp *qp, unsigned long *flags);
337
338 int qib_make_uc_req(struct rvt_qp *qp, unsigned long *flags);
339
340 int qib_make_ud_req(struct rvt_qp *qp, unsigned long *flags);
341
342 int qib_register_ib_device(struct qib_devdata *);
343
344 void qib_unregister_ib_device(struct qib_devdata *);
345
346 void qib_ib_rcv(struct qib_ctxtdata *, void *, void *, u32);
347
348 void qib_ib_piobufavail(struct qib_devdata *);
349
350 unsigned qib_get_npkeys(struct qib_devdata *);
351
352 unsigned qib_get_pkey(struct qib_ibport *, unsigned);
353
354 extern const enum ib_wc_opcode ib_qib_wc_opcode[];
355
356 /*
357 * Below HCA-independent IB PhysPortState values, returned
358 * by the f_ibphys_portstate() routine.
359 */
360 #define IB_PHYSPORTSTATE_SLEEP 1
361 #define IB_PHYSPORTSTATE_POLL 2
362 #define IB_PHYSPORTSTATE_DISABLED 3
363 #define IB_PHYSPORTSTATE_CFG_TRAIN 4
364 #define IB_PHYSPORTSTATE_LINKUP 5
365 #define IB_PHYSPORTSTATE_LINK_ERR_RECOVER 6
366 #define IB_PHYSPORTSTATE_CFG_DEBOUNCE 8
367 #define IB_PHYSPORTSTATE_CFG_IDLE 0xB
368 #define IB_PHYSPORTSTATE_RECOVERY_RETRAIN 0xC
369 #define IB_PHYSPORTSTATE_RECOVERY_WAITRMT 0xE
370 #define IB_PHYSPORTSTATE_RECOVERY_IDLE 0xF
371 #define IB_PHYSPORTSTATE_CFG_ENH 0x10
372 #define IB_PHYSPORTSTATE_CFG_WAIT_ENH 0x13
373
374 extern const int ib_rvt_state_ops[];
375
376 extern __be64 ib_qib_sys_image_guid; /* in network order */
377
378 extern unsigned int ib_rvt_lkey_table_size;
379
380 extern unsigned int ib_qib_max_cqes;
381
382 extern unsigned int ib_qib_max_cqs;
383
384 extern unsigned int ib_qib_max_qp_wrs;
385
386 extern unsigned int ib_qib_max_qps;
387
388 extern unsigned int ib_qib_max_sges;
389
390 extern unsigned int ib_qib_max_mcast_grps;
391
392 extern unsigned int ib_qib_max_mcast_qp_attached;
393
394 extern unsigned int ib_qib_max_srqs;
395
396 extern unsigned int ib_qib_max_srq_sges;
397
398 extern unsigned int ib_qib_max_srq_wrs;
399
400 extern const u32 ib_qib_rnr_table[];
401
402 extern const struct rvt_operation_params qib_post_parms[];
403
404 #endif /* QIB_VERBS_H */
405
