2 * Copyright (c) 2006, 2007 Cisco Systems. All rights reserved.
3 * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
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:
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
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.
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
37 #include <linux/compiler.h>
38 #include <linux/list.h>
39 #include <linux/mutex.h>
41 #include <rdma/ib_verbs.h>
42 #include <rdma/ib_umem.h>
44 #include <linux/mlx4/device.h>
45 #include <linux/mlx4/doorbell.h>
47 #define MLX4_IB_DRV_NAME "mlx4_ib"
52 #define pr_fmt(fmt) "<" MLX4_IB_DRV_NAME "> %s: " fmt, __func__
54 #define mlx4_ib_warn(ibdev, format, arg...) \
55 dev_warn((ibdev)->dma_device, MLX4_IB_DRV_NAME ": " format, ## arg)
58 MLX4_IB_SQ_MIN_WQE_SHIFT = 6,
59 MLX4_IB_MAX_HEADROOM = 2048
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))
65 struct mlx4_ib_ucontext {
66 struct ib_ucontext ibucontext;
68 struct list_head db_page_list;
69 struct mutex db_page_mutex;
78 struct ib_xrcd ibxrcd;
84 struct mlx4_ib_cq_buf {
89 struct mlx4_ib_cq_resize {
90 struct mlx4_ib_cq_buf buf;
97 struct mlx4_ib_cq_buf buf;
98 struct mlx4_ib_cq_resize *resize_buf;
101 struct mutex resize_mutex;
102 struct ib_umem *umem;
103 struct ib_umem *resize_umem;
109 struct ib_umem *umem;
112 struct mlx4_ib_fast_reg_page_list {
113 struct ib_fast_reg_page_list ibfrpl;
114 __be64 *mapped_page_list;
120 struct mlx4_fmr mfmr;
135 enum mlx4_ib_qp_flags {
136 MLX4_IB_QP_LSO = 1 << 0,
137 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK = 1 << 1,
140 struct mlx4_ib_gid_entry {
141 struct list_head list;
153 struct mlx4_ib_wq rq;
156 __be32 sq_signal_bits;
157 unsigned sq_next_wqe;
158 int sq_max_wqes_per_wr;
160 struct mlx4_ib_wq sq;
162 struct ib_umem *umem;
175 struct list_head gid_list;
180 struct mlx4_srq msrq;
188 struct ib_umem *umem;
195 union mlx4_ext_av av;
198 struct mlx4_ib_iboe {
200 struct net_device *netdevs[MLX4_MAX_PORTS];
201 struct notifier_block nb;
202 union ib_gid gid_table[MLX4_MAX_PORTS][128];
206 struct ib_device ib_dev;
207 struct mlx4_dev *dev;
209 void __iomem *uar_map;
211 struct mlx4_uar priv_uar;
213 MLX4_DECLARE_DOORBELL_LOCK(uar_lock);
215 struct ib_mad_agent *send_agent[MLX4_MAX_PORTS][2];
216 struct ib_ah *sm_ah[MLX4_MAX_PORTS];
219 struct mutex cap_mask_mutex;
221 struct mlx4_ib_iboe iboe;
222 int counters[MLX4_MAX_PORTS];
227 struct ib_event_work {
228 struct work_struct work;
229 struct mlx4_ib_dev *ib_dev;
230 struct mlx4_eqe ib_eqe;
233 static inline struct mlx4_ib_dev *to_mdev(struct ib_device *ibdev)
235 return container_of(ibdev, struct mlx4_ib_dev, ib_dev);
238 static inline struct mlx4_ib_ucontext *to_mucontext(struct ib_ucontext *ibucontext)
240 return container_of(ibucontext, struct mlx4_ib_ucontext, ibucontext);
243 static inline struct mlx4_ib_pd *to_mpd(struct ib_pd *ibpd)
245 return container_of(ibpd, struct mlx4_ib_pd, ibpd);
248 static inline struct mlx4_ib_xrcd *to_mxrcd(struct ib_xrcd *ibxrcd)
250 return container_of(ibxrcd, struct mlx4_ib_xrcd, ibxrcd);
253 static inline struct mlx4_ib_cq *to_mcq(struct ib_cq *ibcq)
255 return container_of(ibcq, struct mlx4_ib_cq, ibcq);
258 static inline struct mlx4_ib_cq *to_mibcq(struct mlx4_cq *mcq)
260 return container_of(mcq, struct mlx4_ib_cq, mcq);
263 static inline struct mlx4_ib_mr *to_mmr(struct ib_mr *ibmr)
265 return container_of(ibmr, struct mlx4_ib_mr, ibmr);
268 static inline struct mlx4_ib_fast_reg_page_list *to_mfrpl(struct ib_fast_reg_page_list *ibfrpl)
270 return container_of(ibfrpl, struct mlx4_ib_fast_reg_page_list, ibfrpl);
273 static inline struct mlx4_ib_fmr *to_mfmr(struct ib_fmr *ibfmr)
275 return container_of(ibfmr, struct mlx4_ib_fmr, ibfmr);
277 static inline struct mlx4_ib_qp *to_mqp(struct ib_qp *ibqp)
279 return container_of(ibqp, struct mlx4_ib_qp, ibqp);
282 static inline struct mlx4_ib_qp *to_mibqp(struct mlx4_qp *mqp)
284 return container_of(mqp, struct mlx4_ib_qp, mqp);
287 static inline struct mlx4_ib_srq *to_msrq(struct ib_srq *ibsrq)
289 return container_of(ibsrq, struct mlx4_ib_srq, ibsrq);
292 static inline struct mlx4_ib_srq *to_mibsrq(struct mlx4_srq *msrq)
294 return container_of(msrq, struct mlx4_ib_srq, msrq);
297 static inline struct mlx4_ib_ah *to_mah(struct ib_ah *ibah)
299 return container_of(ibah, struct mlx4_ib_ah, ibah);
302 int mlx4_ib_db_map_user(struct mlx4_ib_ucontext *context, unsigned long virt,
304 void mlx4_ib_db_unmap_user(struct mlx4_ib_ucontext *context, struct mlx4_db *db);
306 struct ib_mr *mlx4_ib_get_dma_mr(struct ib_pd *pd, int acc);
307 int mlx4_ib_umem_write_mtt(struct mlx4_ib_dev *dev, struct mlx4_mtt *mtt,
308 struct ib_umem *umem);
309 struct ib_mr *mlx4_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
310 u64 virt_addr, int access_flags,
311 struct ib_udata *udata);
312 int mlx4_ib_dereg_mr(struct ib_mr *mr);
313 struct ib_mr *mlx4_ib_alloc_fast_reg_mr(struct ib_pd *pd,
314 int max_page_list_len);
315 struct ib_fast_reg_page_list *mlx4_ib_alloc_fast_reg_page_list(struct ib_device *ibdev,
317 void mlx4_ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list);
319 int mlx4_ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period);
320 int mlx4_ib_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata);
321 struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev, int entries, int vector,
322 struct ib_ucontext *context,
323 struct ib_udata *udata);
324 int mlx4_ib_destroy_cq(struct ib_cq *cq);
325 int mlx4_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
326 int mlx4_ib_arm_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags);
327 void __mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);
328 void mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);
330 struct ib_ah *mlx4_ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
331 int mlx4_ib_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr);
332 int mlx4_ib_destroy_ah(struct ib_ah *ah);
334 struct ib_srq *mlx4_ib_create_srq(struct ib_pd *pd,
335 struct ib_srq_init_attr *init_attr,
336 struct ib_udata *udata);
337 int mlx4_ib_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
338 enum ib_srq_attr_mask attr_mask, struct ib_udata *udata);
339 int mlx4_ib_query_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr);
340 int mlx4_ib_destroy_srq(struct ib_srq *srq);
341 void mlx4_ib_free_srq_wqe(struct mlx4_ib_srq *srq, int wqe_index);
342 int mlx4_ib_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
343 struct ib_recv_wr **bad_wr);
345 struct ib_qp *mlx4_ib_create_qp(struct ib_pd *pd,
346 struct ib_qp_init_attr *init_attr,
347 struct ib_udata *udata);
348 int mlx4_ib_destroy_qp(struct ib_qp *qp);
349 int mlx4_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
350 int attr_mask, struct ib_udata *udata);
351 int mlx4_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask,
352 struct ib_qp_init_attr *qp_init_attr);
353 int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
354 struct ib_send_wr **bad_wr);
355 int mlx4_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
356 struct ib_recv_wr **bad_wr);
358 int mlx4_MAD_IFC(struct mlx4_ib_dev *dev, int ignore_mkey, int ignore_bkey,
359 int port, struct ib_wc *in_wc, struct ib_grh *in_grh,
360 void *in_mad, void *response_mad);
361 int mlx4_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
362 struct ib_wc *in_wc, struct ib_grh *in_grh,
363 struct ib_mad *in_mad, struct ib_mad *out_mad);
364 int mlx4_ib_mad_init(struct mlx4_ib_dev *dev);
365 void mlx4_ib_mad_cleanup(struct mlx4_ib_dev *dev);
367 struct ib_fmr *mlx4_ib_fmr_alloc(struct ib_pd *pd, int mr_access_flags,
368 struct ib_fmr_attr *fmr_attr);
369 int mlx4_ib_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list, int npages,
371 int mlx4_ib_unmap_fmr(struct list_head *fmr_list);
372 int mlx4_ib_fmr_dealloc(struct ib_fmr *fmr);
374 int mlx4_ib_resolve_grh(struct mlx4_ib_dev *dev, const struct ib_ah_attr *ah_attr,
375 u8 *mac, int *is_mcast, u8 port);
377 static inline int mlx4_ib_ah_grh_present(struct mlx4_ib_ah *ah)
379 u8 port = be32_to_cpu(ah->av.ib.port_pd) >> 24 & 3;
381 if (rdma_port_get_link_layer(ah->ibah.device, port) == IB_LINK_LAYER_ETHERNET)
384 return !!(ah->av.ib.g_slid & 0x80);
387 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
390 void mlx4_ib_dispatch_event(struct mlx4_ib_dev *dev, u8 port_num,
391 enum ib_event_type type);
393 #endif /* MLX4_IB_H */