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.
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:
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
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.
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
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>
55 struct qib_verbs_txreq;
57 #define QIB_MAX_RDMA_ATOMIC 16
58 #define QIB_GUIDS_PER_PORT 5
59 #define QIB_PSN_SHIFT 8
62 * Increment this value if any changes that break userspace ABI
63 * compatibility are made.
65 #define QIB_UVERBS_ABI_VERSION 2
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
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)
79 #define QIB_VENDOR_IPG cpu_to_be16(0xFFA0)
81 /* XXX Should be defined in ib_verbs.h enum ib_port_cap_flags */
82 #define IB_PORT_OTHER_LOCAL_CHANGES_SUP (1 << 26)
84 #define IB_DEFAULT_GID_PREFIX cpu_to_be64(0xfe80000000000000ULL)
86 /* Values for set/get portinfo VLCap OperationalVLs */
91 #define IB_VL_VL0_14 5
93 static inline int qib_num_vls(int vls)
110 struct qib_pio_header {
112 struct ib_header hdr;
116 * qib specific data structure that will be hidden from rvt after the queue pair
120 struct ib_header *s_hdr; /* next packet header to send */
121 struct list_head iowait; /* link for wait PIO buf */
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;
129 #define QIB_PSN_CREDIT 16
131 struct qib_opcode_stats {
132 u64 n_packets; /* number of packets */
133 u64 n_bytes; /* total number of bytes */
136 struct qib_opcode_stats_perctx {
137 struct qib_opcode_stats stats[128];
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 */
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 */
173 struct rvt_dev_info rdi;
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 */
188 #ifdef CONFIG_DEBUG_FS
189 /* per HCA debugfs */
190 struct dentry *qib_ibdev_dbg;
194 struct qib_verbs_counters {
195 u64 symbol_error_counter;
196 u64 link_error_recovery_counter;
197 u64 link_downed_counter;
199 u64 port_rcv_remphys_errors;
200 u64 port_xmit_discards;
203 u64 port_xmit_packets;
204 u64 port_rcv_packets;
205 u32 local_link_integrity_errors;
206 u32 excessive_buffer_overrun_errors;
210 static inline struct qib_ibdev *to_idev(struct ib_device *ibdev)
212 struct rvt_dev_info *rdi;
214 rdi = container_of(ibdev, struct rvt_dev_info, ibdev);
215 return container_of(rdi, struct qib_ibdev, rdi);
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.
222 static inline int qib_send_ok(struct rvt_qp *qp)
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));
229 void _qib_schedule_send(struct rvt_qp *qp);
230 void qib_schedule_send(struct rvt_qp *qp);
232 static inline int qib_pkey_ok(u16 pkey1, u16 pkey2)
234 u16 p1 = pkey1 & 0x7FFF;
235 u16 p2 = pkey2 & 0x7FFF;
238 * Low 15 bits must be non-zero and match, and
239 * one of the two must be a full member.
241 return p1 && p1 == p2 && ((__s16)pkey1 < 0 || (__s16)pkey2 < 0);
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);
258 * Compare the lower 24 bits of the two values.
259 * Returns an integer <, ==, or > than zero.
261 static inline int qib_cmp24(u32 a, u32 b)
263 return (((int) a) - ((int) b)) << 8;
266 int qib_snapshot_counters(struct qib_pportdata *ppd, u64 *swords,
267 u64 *rwords, u64 *spkts, u64 *rpkts,
270 int qib_get_counters(struct qib_pportdata *ppd,
271 struct qib_verbs_counters *cntrs);
273 __be32 qib_compute_aeth(struct rvt_qp *qp);
276 * Functions provided by qib driver for rdmavt to use
278 unsigned qib_free_all_qps(struct rvt_dev_info *rdi);
279 void *qib_qp_priv_alloc(struct rvt_dev_info *rdi, struct rvt_qp *qp, gfp_t gfp);
280 void qib_qp_priv_free(struct rvt_dev_info *rdi, struct rvt_qp *qp);
281 void qib_notify_qp_reset(struct rvt_qp *qp);
282 int qib_alloc_qpn(struct rvt_dev_info *rdi, struct rvt_qpn_table *qpt,
283 enum ib_qp_type type, u8 port, gfp_t gfp);
285 #ifdef CONFIG_DEBUG_FS
289 struct qib_qp_iter *qib_qp_iter_init(struct qib_ibdev *dev);
291 int qib_qp_iter_next(struct qib_qp_iter *iter);
293 void qib_qp_iter_print(struct seq_file *s, struct qib_qp_iter *iter);
297 void qib_get_credit(struct rvt_qp *qp, u32 aeth);
299 unsigned qib_pkt_delay(u32 plen, u8 snd_mult, u8 rcv_mult);
301 void qib_verbs_sdma_desc_avail(struct qib_pportdata *ppd, unsigned avail);
303 void qib_put_txreq(struct qib_verbs_txreq *tx);
305 int qib_verbs_send(struct rvt_qp *qp, struct ib_header *hdr,
306 u32 hdrwords, struct rvt_sge_state *ss, u32 len);
308 void qib_copy_sge(struct rvt_sge_state *ss, void *data, u32 length,
311 void qib_skip_sge(struct rvt_sge_state *ss, u32 length, int release);
313 void qib_uc_rcv(struct qib_ibport *ibp, struct ib_header *hdr,
314 int has_grh, void *data, u32 tlen, struct rvt_qp *qp);
316 void qib_rc_rcv(struct qib_ctxtdata *rcd, struct ib_header *hdr,
317 int has_grh, void *data, u32 tlen, struct rvt_qp *qp);
319 int qib_check_ah(struct ib_device *ibdev, struct ib_ah_attr *ah_attr);
321 int qib_check_send_wqe(struct rvt_qp *qp, struct rvt_swqe *wqe);
323 struct ib_ah *qib_create_qp0_ah(struct qib_ibport *ibp, u16 dlid);
325 void qib_rc_rnr_retry(unsigned long arg);
327 void qib_rc_send_complete(struct rvt_qp *qp, struct ib_header *hdr);
329 void qib_rc_error(struct rvt_qp *qp, enum ib_wc_status err);
331 int qib_post_ud_send(struct rvt_qp *qp, struct ib_send_wr *wr);
333 void qib_ud_rcv(struct qib_ibport *ibp, struct ib_header *hdr,
334 int has_grh, void *data, u32 tlen, struct rvt_qp *qp);
336 void mr_rcu_callback(struct rcu_head *list);
338 int qib_get_rwqe(struct rvt_qp *qp, int wr_id_only);
340 void qib_migrate_qp(struct rvt_qp *qp);
342 int qib_ruc_check_hdr(struct qib_ibport *ibp, struct ib_header *hdr,
343 int has_grh, struct rvt_qp *qp, u32 bth0);
345 u32 qib_make_grh(struct qib_ibport *ibp, struct ib_grh *hdr,
346 struct ib_global_route *grh, u32 hwords, u32 nwords);
348 void qib_make_ruc_header(struct rvt_qp *qp, struct ib_other_headers *ohdr,
351 void _qib_do_send(struct work_struct *work);
353 void qib_do_send(struct rvt_qp *qp);
355 void qib_send_complete(struct rvt_qp *qp, struct rvt_swqe *wqe,
356 enum ib_wc_status status);
358 void qib_send_rc_ack(struct rvt_qp *qp);
360 int qib_make_rc_req(struct rvt_qp *qp, unsigned long *flags);
362 int qib_make_uc_req(struct rvt_qp *qp, unsigned long *flags);
364 int qib_make_ud_req(struct rvt_qp *qp, unsigned long *flags);
366 int qib_register_ib_device(struct qib_devdata *);
368 void qib_unregister_ib_device(struct qib_devdata *);
370 void qib_ib_rcv(struct qib_ctxtdata *, void *, void *, u32);
372 void qib_ib_piobufavail(struct qib_devdata *);
374 unsigned qib_get_npkeys(struct qib_devdata *);
376 unsigned qib_get_pkey(struct qib_ibport *, unsigned);
378 extern const enum ib_wc_opcode ib_qib_wc_opcode[];
381 * Below HCA-independent IB PhysPortState values, returned
382 * by the f_ibphys_portstate() routine.
384 #define IB_PHYSPORTSTATE_SLEEP 1
385 #define IB_PHYSPORTSTATE_POLL 2
386 #define IB_PHYSPORTSTATE_DISABLED 3
387 #define IB_PHYSPORTSTATE_CFG_TRAIN 4
388 #define IB_PHYSPORTSTATE_LINKUP 5
389 #define IB_PHYSPORTSTATE_LINK_ERR_RECOVER 6
390 #define IB_PHYSPORTSTATE_CFG_DEBOUNCE 8
391 #define IB_PHYSPORTSTATE_CFG_IDLE 0xB
392 #define IB_PHYSPORTSTATE_RECOVERY_RETRAIN 0xC
393 #define IB_PHYSPORTSTATE_RECOVERY_WAITRMT 0xE
394 #define IB_PHYSPORTSTATE_RECOVERY_IDLE 0xF
395 #define IB_PHYSPORTSTATE_CFG_ENH 0x10
396 #define IB_PHYSPORTSTATE_CFG_WAIT_ENH 0x13
398 extern const int ib_rvt_state_ops[];
400 extern __be64 ib_qib_sys_image_guid; /* in network order */
402 extern unsigned int ib_rvt_lkey_table_size;
404 extern unsigned int ib_qib_max_cqes;
406 extern unsigned int ib_qib_max_cqs;
408 extern unsigned int ib_qib_max_qp_wrs;
410 extern unsigned int ib_qib_max_qps;
412 extern unsigned int ib_qib_max_sges;
414 extern unsigned int ib_qib_max_mcast_grps;
416 extern unsigned int ib_qib_max_mcast_qp_attached;
418 extern unsigned int ib_qib_max_srqs;
420 extern unsigned int ib_qib_max_srq_sges;
422 extern unsigned int ib_qib_max_srq_wrs;
424 extern const u32 ib_qib_rnr_table[];
426 extern const struct rvt_operation_params qib_post_parms[];
428 #endif /* QIB_VERBS_H */