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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
47#define MLX4_IB_DRV_NAME "mlx4_ib"
48
49#ifdef pr_fmt
50#undef pr_fmt
51#endif
52#define pr_fmt(fmt) "<" MLX4_IB_DRV_NAME "> %s: " fmt, __func__
53
54#define mlx4_ib_warn(ibdev, format, arg...) \
55 dev_warn((ibdev)->dma_device, MLX4_IB_DRV_NAME ": " format, ## arg)
56
57enum {
58 MLX4_IB_SQ_MIN_WQE_SHIFT = 6,
59 MLX4_IB_MAX_HEADROOM = 2048
60};
61
62#define MLX4_IB_SQ_HEADROOM(shift) ((MLX4_IB_MAX_HEADROOM >> (shift)) + 1)
63#define MLX4_IB_SQ_MAX_SPARE (MLX4_IB_SQ_HEADROOM(MLX4_IB_SQ_MIN_WQE_SHIFT))
64
65struct mlx4_ib_ucontext {
66 struct ib_ucontext ibucontext;
67 struct mlx4_uar uar;
68 struct list_head db_page_list;
69 struct mutex db_page_mutex;
70};
71
72struct mlx4_ib_pd {
73 struct ib_pd ibpd;
74 u32 pdn;
75};
76
77struct mlx4_ib_xrcd {
78 struct ib_xrcd ibxrcd;
79 u32 xrcdn;
80 struct ib_pd *pd;
81 struct ib_cq *cq;
82};
83
84struct mlx4_ib_cq_buf {
85 struct mlx4_buf buf;
86 struct mlx4_mtt mtt;
87};
88
89struct mlx4_ib_cq_resize {
90 struct mlx4_ib_cq_buf buf;
91 int cqe;
92};
93
94struct mlx4_ib_cq {
95 struct ib_cq ibcq;
96 struct mlx4_cq mcq;
97 struct mlx4_ib_cq_buf buf;
98 struct mlx4_ib_cq_resize *resize_buf;
99 struct mlx4_db db;
100 spinlock_t lock;
101 struct mutex resize_mutex;
102 struct ib_umem *umem;
103 struct ib_umem *resize_umem;
104};
105
106struct mlx4_ib_mr {
107 struct ib_mr ibmr;
108 struct mlx4_mr mmr;
109 struct ib_umem *umem;
110};
111
112struct mlx4_ib_fast_reg_page_list {
113 struct ib_fast_reg_page_list ibfrpl;
114 __be64 *mapped_page_list;
115 dma_addr_t map;
116};
117
118struct mlx4_ib_fmr {
119 struct ib_fmr ibfmr;
120 struct mlx4_fmr mfmr;
121};
122
123struct mlx4_ib_wq {
124 u64 *wrid;
125 spinlock_t lock;
126 int wqe_cnt;
127 int max_post;
128 int max_gs;
129 int offset;
130 int wqe_shift;
131 unsigned head;
132 unsigned tail;
133};
134
135enum mlx4_ib_qp_flags {
136 MLX4_IB_QP_LSO = 1 << 0,
137 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK = 1 << 1,
138};
139
140struct mlx4_ib_gid_entry {
141 struct list_head list;
142 union ib_gid gid;
143 int added;
144 u8 port;
145};
146
147struct mlx4_ib_qp {
148 struct ib_qp ibqp;
149 struct mlx4_qp mqp;
150 struct mlx4_buf buf;
151
152 struct mlx4_db db;
153 struct mlx4_ib_wq rq;
154
155 u32 doorbell_qpn;
156 __be32 sq_signal_bits;
157 unsigned sq_next_wqe;
158 int sq_max_wqes_per_wr;
159 int sq_spare_wqes;
160 struct mlx4_ib_wq sq;
161
162 struct ib_umem *umem;
163 struct mlx4_mtt mtt;
164 int buf_size;
165 struct mutex mutex;
166 u16 xrcdn;
167 u32 flags;
168 u8 port;
169 u8 alt_port;
170 u8 atomic_rd_en;
171 u8 resp_depth;
172 u8 sq_no_prefetch;
173 u8 state;
174 int mlx_type;
175 struct list_head gid_list;
176 struct list_head steering_rules;
177};
178
179struct mlx4_ib_srq {
180 struct ib_srq ibsrq;
181 struct mlx4_srq msrq;
182 struct mlx4_buf buf;
183 struct mlx4_db db;
184 u64 *wrid;
185 spinlock_t lock;
186 int head;
187 int tail;
188 u16 wqe_ctr;
189 struct ib_umem *umem;
190 struct mlx4_mtt mtt;
191 struct mutex mutex;
192};
193
194struct mlx4_ib_ah {
195 struct ib_ah ibah;
196 union mlx4_ext_av av;
197};
198
199struct mlx4_ib_iboe {
200 spinlock_t lock;
201 struct net_device *netdevs[MLX4_MAX_PORTS];
202 struct notifier_block nb;
203 union ib_gid gid_table[MLX4_MAX_PORTS][128];
204};
205
206struct mlx4_ib_dev {
207 struct ib_device ib_dev;
208 struct mlx4_dev *dev;
209 int num_ports;
210 void __iomem *uar_map;
211
212 struct mlx4_uar priv_uar;
213 u32 priv_pdn;
214 MLX4_DECLARE_DOORBELL_LOCK(uar_lock);
215
216 struct ib_mad_agent *send_agent[MLX4_MAX_PORTS][2];
217 struct ib_ah *sm_ah[MLX4_MAX_PORTS];
218 spinlock_t sm_lock;
219
220 struct mutex cap_mask_mutex;
221 bool ib_active;
222 struct mlx4_ib_iboe iboe;
223 int counters[MLX4_MAX_PORTS];
224 int *eq_table;
225 int eq_added;
226};
227
228struct ib_event_work {
229 struct work_struct work;
230 struct mlx4_ib_dev *ib_dev;
231 struct mlx4_eqe ib_eqe;
232};
233
234static inline struct mlx4_ib_dev *to_mdev(struct ib_device *ibdev)
235{
236 return container_of(ibdev, struct mlx4_ib_dev, ib_dev);
237}
238
239static inline struct mlx4_ib_ucontext *to_mucontext(struct ib_ucontext *ibucontext)
240{
241 return container_of(ibucontext, struct mlx4_ib_ucontext, ibucontext);
242}
243
244static inline struct mlx4_ib_pd *to_mpd(struct ib_pd *ibpd)
245{
246 return container_of(ibpd, struct mlx4_ib_pd, ibpd);
247}
248
249static inline struct mlx4_ib_xrcd *to_mxrcd(struct ib_xrcd *ibxrcd)
250{
251 return container_of(ibxrcd, struct mlx4_ib_xrcd, ibxrcd);
252}
253
254static inline struct mlx4_ib_cq *to_mcq(struct ib_cq *ibcq)
255{
256 return container_of(ibcq, struct mlx4_ib_cq, ibcq);
257}
258
259static inline struct mlx4_ib_cq *to_mibcq(struct mlx4_cq *mcq)
260{
261 return container_of(mcq, struct mlx4_ib_cq, mcq);
262}
263
264static inline struct mlx4_ib_mr *to_mmr(struct ib_mr *ibmr)
265{
266 return container_of(ibmr, struct mlx4_ib_mr, ibmr);
267}
268
269static inline struct mlx4_ib_fast_reg_page_list *to_mfrpl(struct ib_fast_reg_page_list *ibfrpl)
270{
271 return container_of(ibfrpl, struct mlx4_ib_fast_reg_page_list, ibfrpl);
272}
273
274static inline struct mlx4_ib_fmr *to_mfmr(struct ib_fmr *ibfmr)
275{
276 return container_of(ibfmr, struct mlx4_ib_fmr, ibfmr);
277}
278static inline struct mlx4_ib_qp *to_mqp(struct ib_qp *ibqp)
279{
280 return container_of(ibqp, struct mlx4_ib_qp, ibqp);
281}
282
283static inline struct mlx4_ib_qp *to_mibqp(struct mlx4_qp *mqp)
284{
285 return container_of(mqp, struct mlx4_ib_qp, mqp);
286}
287
288static inline struct mlx4_ib_srq *to_msrq(struct ib_srq *ibsrq)
289{
290 return container_of(ibsrq, struct mlx4_ib_srq, ibsrq);
291}
292
293static inline struct mlx4_ib_srq *to_mibsrq(struct mlx4_srq *msrq)
294{
295 return container_of(msrq, struct mlx4_ib_srq, msrq);
296}
297
298static inline struct mlx4_ib_ah *to_mah(struct ib_ah *ibah)
299{
300 return container_of(ibah, struct mlx4_ib_ah, ibah);
301}
302
303int mlx4_ib_db_map_user(struct mlx4_ib_ucontext *context, unsigned long virt,
304 struct mlx4_db *db);
305void mlx4_ib_db_unmap_user(struct mlx4_ib_ucontext *context, struct mlx4_db *db);
306
307struct ib_mr *mlx4_ib_get_dma_mr(struct ib_pd *pd, int acc);
308int mlx4_ib_umem_write_mtt(struct mlx4_ib_dev *dev, struct mlx4_mtt *mtt,
309 struct ib_umem *umem);
310struct ib_mr *mlx4_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
311 u64 virt_addr, int access_flags,
312 struct ib_udata *udata);
313int mlx4_ib_dereg_mr(struct ib_mr *mr);
314struct ib_mr *mlx4_ib_alloc_fast_reg_mr(struct ib_pd *pd,
315 int max_page_list_len);
316struct ib_fast_reg_page_list *mlx4_ib_alloc_fast_reg_page_list(struct ib_device *ibdev,
317 int page_list_len);
318void mlx4_ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list);
319
320int mlx4_ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period);
321int mlx4_ib_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata);
322struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev, int entries, int vector,
323 struct ib_ucontext *context,
324 struct ib_udata *udata);
325int mlx4_ib_destroy_cq(struct ib_cq *cq);
326int mlx4_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
327int mlx4_ib_arm_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags);
328void __mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);
329void mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);
330
331struct ib_ah *mlx4_ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
332int mlx4_ib_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr);
333int mlx4_ib_destroy_ah(struct ib_ah *ah);
334
335struct ib_srq *mlx4_ib_create_srq(struct ib_pd *pd,
336 struct ib_srq_init_attr *init_attr,
337 struct ib_udata *udata);
338int mlx4_ib_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
339 enum ib_srq_attr_mask attr_mask, struct ib_udata *udata);
340int mlx4_ib_query_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr);
341int mlx4_ib_destroy_srq(struct ib_srq *srq);
342void mlx4_ib_free_srq_wqe(struct mlx4_ib_srq *srq, int wqe_index);
343int mlx4_ib_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
344 struct ib_recv_wr **bad_wr);
345
346struct ib_qp *mlx4_ib_create_qp(struct ib_pd *pd,
347 struct ib_qp_init_attr *init_attr,
348 struct ib_udata *udata);
349int mlx4_ib_destroy_qp(struct ib_qp *qp);
350int mlx4_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
351 int attr_mask, struct ib_udata *udata);
352int mlx4_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask,
353 struct ib_qp_init_attr *qp_init_attr);
354int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
355 struct ib_send_wr **bad_wr);
356int mlx4_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
357 struct ib_recv_wr **bad_wr);
358
359int mlx4_MAD_IFC(struct mlx4_ib_dev *dev, int ignore_mkey, int ignore_bkey,
360 int port, struct ib_wc *in_wc, struct ib_grh *in_grh,
361 void *in_mad, void *response_mad);
362int mlx4_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
363 struct ib_wc *in_wc, struct ib_grh *in_grh,
364 struct ib_mad *in_mad, struct ib_mad *out_mad);
365int mlx4_ib_mad_init(struct mlx4_ib_dev *dev);
366void mlx4_ib_mad_cleanup(struct mlx4_ib_dev *dev);
367
368struct ib_fmr *mlx4_ib_fmr_alloc(struct ib_pd *pd, int mr_access_flags,
369 struct ib_fmr_attr *fmr_attr);
370int mlx4_ib_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list, int npages,
371 u64 iova);
372int mlx4_ib_unmap_fmr(struct list_head *fmr_list);
373int mlx4_ib_fmr_dealloc(struct ib_fmr *fmr);
374
375int mlx4_ib_resolve_grh(struct mlx4_ib_dev *dev, const struct ib_ah_attr *ah_attr,
376 u8 *mac, int *is_mcast, u8 port);
377
378static inline int mlx4_ib_ah_grh_present(struct mlx4_ib_ah *ah)
379{
380 u8 port = be32_to_cpu(ah->av.ib.port_pd) >> 24 & 3;
381
382 if (rdma_port_get_link_layer(ah->ibah.device, port) == IB_LINK_LAYER_ETHERNET)
383 return 1;
384
385 return !!(ah->av.ib.g_slid & 0x80);
386}
387
388int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
389 union ib_gid *gid);
390
391void mlx4_ib_dispatch_event(struct mlx4_ib_dev *dev, u8 port_num,
392 enum ib_event_type type);
393
394#endif
395
