mlx4_ib.h revision 012a8ff577f95211c6ffd3b77a94c34ebae009b6 
1/*
2 * Copyright (c) 2006, 2007 Cisco Systems.  All rights reserved.
3 * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
4 *
5 * This software is available to you under a choice of one of two
6 * licenses.  You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
10 *
11 *     Redistribution and use in source and binary forms, with or
12 *     without modification, are permitted provided that the following
13 *     conditions are met:
14 *
15 *      - Redistributions of source code must retain the above
16 *        copyright notice, this list of conditions and the following
17 *        disclaimer.
18 *
19 *      - Redistributions in binary form must reproduce the above
20 *        copyright notice, this list of conditions and the following
21 *        disclaimer in the documentation and/or other materials
22 *        provided with the distribution.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31 * SOFTWARE.
32 */
33
34#ifndef MLX4_IB_H
35#define MLX4_IB_H
36
37#include <linux/compiler.h>
38#include <linux/list.h>
39#include <linux/mutex.h>
40
41#include <rdma/ib_verbs.h>
42#include <rdma/ib_umem.h>
43
44#include <linux/mlx4/device.h>
45#include <linux/mlx4/doorbell.h>
46
47struct mlx4_ib_ucontext {
48	struct ib_ucontext	ibucontext;
49	struct mlx4_uar		uar;
50	struct list_head	db_page_list;
51	struct mutex		db_page_mutex;
52};
53
54struct mlx4_ib_pd {
55	struct ib_pd		ibpd;
56	u32			pdn;
57};
58
59struct mlx4_ib_xrcd {
60	struct ib_xrcd		ibxrcd;
61	u32			xrcdn;
62	struct ib_pd	       *pd;
63	struct ib_cq	       *cq;
64};
65
66struct mlx4_ib_cq_buf {
67	struct mlx4_buf		buf;
68	struct mlx4_mtt		mtt;
69};
70
71struct mlx4_ib_cq_resize {
72	struct mlx4_ib_cq_buf	buf;
73	int			cqe;
74};
75
76struct mlx4_ib_cq {
77	struct ib_cq		ibcq;
78	struct mlx4_cq		mcq;
79	struct mlx4_ib_cq_buf	buf;
80	struct mlx4_ib_cq_resize *resize_buf;
81	struct mlx4_db		db;
82	spinlock_t		lock;
83	struct mutex		resize_mutex;
84	struct ib_umem	       *umem;
85	struct ib_umem	       *resize_umem;
86};
87
88struct mlx4_ib_mr {
89	struct ib_mr		ibmr;
90	struct mlx4_mr		mmr;
91	struct ib_umem	       *umem;
92};
93
94struct mlx4_ib_fast_reg_page_list {
95	struct ib_fast_reg_page_list	ibfrpl;
96	__be64			       *mapped_page_list;
97	dma_addr_t			map;
98};
99
100struct mlx4_ib_fmr {
101	struct ib_fmr           ibfmr;
102	struct mlx4_fmr         mfmr;
103};
104
105struct mlx4_ib_wq {
106	u64		       *wrid;
107	spinlock_t		lock;
108	int			wqe_cnt;
109	int			max_post;
110	int			max_gs;
111	int			offset;
112	int			wqe_shift;
113	unsigned		head;
114	unsigned		tail;
115};
116
117enum mlx4_ib_qp_flags {
118	MLX4_IB_QP_LSO				= 1 << 0,
119	MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK	= 1 << 1,
120};
121
122struct mlx4_ib_gid_entry {
123	struct list_head	list;
124	union ib_gid		gid;
125	int			added;
126	u8			port;
127};
128
129struct mlx4_ib_qp {
130	struct ib_qp		ibqp;
131	struct mlx4_qp		mqp;
132	struct mlx4_buf		buf;
133
134	struct mlx4_db		db;
135	struct mlx4_ib_wq	rq;
136
137	u32			doorbell_qpn;
138	__be32			sq_signal_bits;
139	unsigned		sq_next_wqe;
140	int			sq_max_wqes_per_wr;
141	int			sq_spare_wqes;
142	struct mlx4_ib_wq	sq;
143
144	struct ib_umem	       *umem;
145	struct mlx4_mtt		mtt;
146	int			buf_size;
147	struct mutex		mutex;
148	u32			flags;
149	u8			port;
150	u8			alt_port;
151	u8			atomic_rd_en;
152	u8			resp_depth;
153	u8			sq_no_prefetch;
154	u8			state;
155	int			mlx_type;
156	struct list_head	gid_list;
157};
158
159struct mlx4_ib_srq {
160	struct ib_srq		ibsrq;
161	struct mlx4_srq		msrq;
162	struct mlx4_buf		buf;
163	struct mlx4_db		db;
164	u64		       *wrid;
165	spinlock_t		lock;
166	int			head;
167	int			tail;
168	u16			wqe_ctr;
169	struct ib_umem	       *umem;
170	struct mlx4_mtt		mtt;
171	struct mutex		mutex;
172};
173
174struct mlx4_ib_ah {
175	struct ib_ah		ibah;
176	union mlx4_ext_av       av;
177};
178
179struct mlx4_ib_iboe {
180	spinlock_t		lock;
181	struct net_device      *netdevs[MLX4_MAX_PORTS];
182	struct notifier_block 	nb;
183	union ib_gid		gid_table[MLX4_MAX_PORTS][128];
184};
185
186struct mlx4_ib_dev {
187	struct ib_device	ib_dev;
188	struct mlx4_dev	       *dev;
189	int			num_ports;
190	void __iomem	       *uar_map;
191
192	struct mlx4_uar		priv_uar;
193	u32			priv_pdn;
194	MLX4_DECLARE_DOORBELL_LOCK(uar_lock);
195
196	struct ib_mad_agent    *send_agent[MLX4_MAX_PORTS][2];
197	struct ib_ah	       *sm_ah[MLX4_MAX_PORTS];
198	spinlock_t		sm_lock;
199
200	struct mutex		cap_mask_mutex;
201	bool			ib_active;
202	struct mlx4_ib_iboe	iboe;
203	int			counters[MLX4_MAX_PORTS];
204};
205
206static inline struct mlx4_ib_dev *to_mdev(struct ib_device *ibdev)
207{
208	return container_of(ibdev, struct mlx4_ib_dev, ib_dev);
209}
210
211static inline struct mlx4_ib_ucontext *to_mucontext(struct ib_ucontext *ibucontext)
212{
213	return container_of(ibucontext, struct mlx4_ib_ucontext, ibucontext);
214}
215
216static inline struct mlx4_ib_pd *to_mpd(struct ib_pd *ibpd)
217{
218	return container_of(ibpd, struct mlx4_ib_pd, ibpd);
219}
220
221static inline struct mlx4_ib_xrcd *to_mxrcd(struct ib_xrcd *ibxrcd)
222{
223	return container_of(ibxrcd, struct mlx4_ib_xrcd, ibxrcd);
224}
225
226static inline struct mlx4_ib_cq *to_mcq(struct ib_cq *ibcq)
227{
228	return container_of(ibcq, struct mlx4_ib_cq, ibcq);
229}
230
231static inline struct mlx4_ib_cq *to_mibcq(struct mlx4_cq *mcq)
232{
233	return container_of(mcq, struct mlx4_ib_cq, mcq);
234}
235
236static inline struct mlx4_ib_mr *to_mmr(struct ib_mr *ibmr)
237{
238	return container_of(ibmr, struct mlx4_ib_mr, ibmr);
239}
240
241static inline struct mlx4_ib_fast_reg_page_list *to_mfrpl(struct ib_fast_reg_page_list *ibfrpl)
242{
243	return container_of(ibfrpl, struct mlx4_ib_fast_reg_page_list, ibfrpl);
244}
245
246static inline struct mlx4_ib_fmr *to_mfmr(struct ib_fmr *ibfmr)
247{
248	return container_of(ibfmr, struct mlx4_ib_fmr, ibfmr);
249}
250static inline struct mlx4_ib_qp *to_mqp(struct ib_qp *ibqp)
251{
252	return container_of(ibqp, struct mlx4_ib_qp, ibqp);
253}
254
255static inline struct mlx4_ib_qp *to_mibqp(struct mlx4_qp *mqp)
256{
257	return container_of(mqp, struct mlx4_ib_qp, mqp);
258}
259
260static inline struct mlx4_ib_srq *to_msrq(struct ib_srq *ibsrq)
261{
262	return container_of(ibsrq, struct mlx4_ib_srq, ibsrq);
263}
264
265static inline struct mlx4_ib_srq *to_mibsrq(struct mlx4_srq *msrq)
266{
267	return container_of(msrq, struct mlx4_ib_srq, msrq);
268}
269
270static inline struct mlx4_ib_ah *to_mah(struct ib_ah *ibah)
271{
272	return container_of(ibah, struct mlx4_ib_ah, ibah);
273}
274
275int mlx4_ib_db_map_user(struct mlx4_ib_ucontext *context, unsigned long virt,
276			struct mlx4_db *db);
277void mlx4_ib_db_unmap_user(struct mlx4_ib_ucontext *context, struct mlx4_db *db);
278
279struct ib_mr *mlx4_ib_get_dma_mr(struct ib_pd *pd, int acc);
280int mlx4_ib_umem_write_mtt(struct mlx4_ib_dev *dev, struct mlx4_mtt *mtt,
281			   struct ib_umem *umem);
282struct ib_mr *mlx4_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
283				  u64 virt_addr, int access_flags,
284				  struct ib_udata *udata);
285int mlx4_ib_dereg_mr(struct ib_mr *mr);
286struct ib_mr *mlx4_ib_alloc_fast_reg_mr(struct ib_pd *pd,
287					int max_page_list_len);
288struct ib_fast_reg_page_list *mlx4_ib_alloc_fast_reg_page_list(struct ib_device *ibdev,
289							       int page_list_len);
290void mlx4_ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list);
291
292int mlx4_ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period);
293int mlx4_ib_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata);
294struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev, int entries, int vector,
295				struct ib_ucontext *context,
296				struct ib_udata *udata);
297int mlx4_ib_destroy_cq(struct ib_cq *cq);
298int mlx4_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
299int mlx4_ib_arm_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags);
300void __mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);
301void mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);
302
303struct ib_ah *mlx4_ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
304int mlx4_ib_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr);
305int mlx4_ib_destroy_ah(struct ib_ah *ah);
306
307struct ib_srq *mlx4_ib_create_srq(struct ib_pd *pd,
308				  struct ib_srq_init_attr *init_attr,
309				  struct ib_udata *udata);
310int mlx4_ib_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
311		       enum ib_srq_attr_mask attr_mask, struct ib_udata *udata);
312int mlx4_ib_query_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr);
313int mlx4_ib_destroy_srq(struct ib_srq *srq);
314void mlx4_ib_free_srq_wqe(struct mlx4_ib_srq *srq, int wqe_index);
315int mlx4_ib_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
316			  struct ib_recv_wr **bad_wr);
317
318struct ib_qp *mlx4_ib_create_qp(struct ib_pd *pd,
319				struct ib_qp_init_attr *init_attr,
320				struct ib_udata *udata);
321int mlx4_ib_destroy_qp(struct ib_qp *qp);
322int mlx4_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
323		      int attr_mask, struct ib_udata *udata);
324int mlx4_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask,
325		     struct ib_qp_init_attr *qp_init_attr);
326int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
327		      struct ib_send_wr **bad_wr);
328int mlx4_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
329		      struct ib_recv_wr **bad_wr);
330
331int mlx4_MAD_IFC(struct mlx4_ib_dev *dev, int ignore_mkey, int ignore_bkey,
332		 int port, struct ib_wc *in_wc, struct ib_grh *in_grh,
333		 void *in_mad, void *response_mad);
334int mlx4_ib_process_mad(struct ib_device *ibdev, int mad_flags,	u8 port_num,
335			struct ib_wc *in_wc, struct ib_grh *in_grh,
336			struct ib_mad *in_mad, struct ib_mad *out_mad);
337int mlx4_ib_mad_init(struct mlx4_ib_dev *dev);
338void mlx4_ib_mad_cleanup(struct mlx4_ib_dev *dev);
339
340struct ib_fmr *mlx4_ib_fmr_alloc(struct ib_pd *pd, int mr_access_flags,
341				  struct ib_fmr_attr *fmr_attr);
342int mlx4_ib_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list, int npages,
343			 u64 iova);
344int mlx4_ib_unmap_fmr(struct list_head *fmr_list);
345int mlx4_ib_fmr_dealloc(struct ib_fmr *fmr);
346
347int mlx4_ib_resolve_grh(struct mlx4_ib_dev *dev, const struct ib_ah_attr *ah_attr,
348			u8 *mac, int *is_mcast, u8 port);
349
350static inline int mlx4_ib_ah_grh_present(struct mlx4_ib_ah *ah)
351{
352	u8 port = be32_to_cpu(ah->av.ib.port_pd) >> 24 & 3;
353
354	if (rdma_port_get_link_layer(ah->ibah.device, port) == IB_LINK_LAYER_ETHERNET)
355		return 1;
356
357	return !!(ah->av.ib.g_slid & 0x80);
358}
359
360int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
361		   union ib_gid *gid);
362
363#endif /* MLX4_IB_H */
364