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>
48 #define MLX4_IB_DRV_NAME "mlx4_ib"
50 #ifdef CONFIG_MLX4_DEBUG
51 extern int mlx4_ib_debug_level;
53 #define mlx4_ib_dbg(format, arg...) \
55 if (mlx4_ib_debug_level) \
56 printk(KERN_DEBUG "<" MLX4_IB_DRV_NAME "> %s: " format "\n",\
60 #else /* CONFIG_MLX4_DEBUG */
62 #define mlx4_ib_dbg(format, arg...) do {} while (0)
64 #endif /* CONFIG_MLX4_DEBUG */
67 MLX4_IB_SQ_MIN_WQE_SHIFT = 6
70 #define MLX4_IB_SQ_HEADROOM(shift) ((2048 >> (shift)) + 1)
71 #define MLX4_IB_SQ_MAX_SPARE (MLX4_IB_SQ_HEADROOM(MLX4_IB_SQ_MIN_WQE_SHIFT))
73 struct mlx4_ib_ucontext {
74 struct ib_ucontext ibucontext;
76 struct list_head db_page_list;
77 struct mutex db_page_mutex;
86 struct ib_xrcd ibxrcd;
92 struct mlx4_ib_cq_buf {
97 struct mlx4_ib_cq_resize {
98 struct mlx4_ib_cq_buf buf;
105 struct mlx4_ib_cq_buf buf;
106 struct mlx4_ib_cq_resize *resize_buf;
109 struct mutex resize_mutex;
110 struct ib_umem *umem;
111 struct ib_umem *resize_umem;
117 struct ib_umem *umem;
120 struct mlx4_ib_fast_reg_page_list {
121 struct ib_fast_reg_page_list ibfrpl;
122 __be64 *mapped_page_list;
128 struct mlx4_fmr mfmr;
143 enum mlx4_ib_qp_flags {
144 MLX4_IB_QP_LSO = 1 << 0,
145 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK = 1 << 1,
146 MLX4_IB_XRC_RCV = 1 << 2,
150 struct list_head list;
162 struct mlx4_ib_wq rq;
165 __be32 sq_signal_bits;
166 unsigned sq_next_wqe;
167 int sq_max_wqes_per_wr;
169 struct mlx4_ib_wq sq;
171 struct ib_umem *umem;
176 struct list_head xrc_reg_list;
177 spinlock_t xrc_reg_list_lock;
186 struct list_head gid_list;
193 struct mlx4_srq msrq;
201 struct ib_umem *umem;
208 union mlx4_ext_av av;
211 struct mlx4_ib_iboe {
213 struct net_device *netdevs[MLX4_MAX_PORTS];
214 struct notifier_block nb;
215 union ib_gid gid_table[MLX4_MAX_PORTS][128];
219 struct ib_device ib_dev;
220 struct mlx4_dev *dev;
222 struct mlx4_uar priv_uar;
224 MLX4_DECLARE_DOORBELL_LOCK(uar_lock);
226 struct ib_mad_agent *send_agent[MLX4_MAX_PORTS][2];
227 struct ib_ah *sm_ah[MLX4_MAX_PORTS];
230 struct mutex cap_mask_mutex;
231 struct mutex xrc_reg_mutex;
233 struct mlx4_ib_iboe iboe;
234 int counters[MLX4_MAX_PORTS];
237 static inline struct mlx4_ib_dev *to_mdev(struct ib_device *ibdev)
239 return container_of(ibdev, struct mlx4_ib_dev, ib_dev);
242 static inline struct mlx4_ib_ucontext *to_mucontext(struct ib_ucontext *ibucontext)
244 return container_of(ibucontext, struct mlx4_ib_ucontext, ibucontext);
247 static inline struct mlx4_ib_pd *to_mpd(struct ib_pd *ibpd)
249 return container_of(ibpd, struct mlx4_ib_pd, ibpd);
252 static inline struct mlx4_ib_xrcd *to_mxrcd(struct ib_xrcd *ibxrcd)
254 return container_of(ibxrcd, struct mlx4_ib_xrcd, ibxrcd);
257 static inline struct mlx4_ib_cq *to_mcq(struct ib_cq *ibcq)
259 return container_of(ibcq, struct mlx4_ib_cq, ibcq);
262 static inline struct mlx4_ib_cq *to_mibcq(struct mlx4_cq *mcq)
264 return container_of(mcq, struct mlx4_ib_cq, mcq);
267 static inline struct mlx4_ib_mr *to_mmr(struct ib_mr *ibmr)
269 return container_of(ibmr, struct mlx4_ib_mr, ibmr);
272 static inline struct mlx4_ib_fast_reg_page_list *to_mfrpl(struct ib_fast_reg_page_list *ibfrpl)
274 return container_of(ibfrpl, struct mlx4_ib_fast_reg_page_list, ibfrpl);
277 static inline struct mlx4_ib_fmr *to_mfmr(struct ib_fmr *ibfmr)
279 return container_of(ibfmr, struct mlx4_ib_fmr, ibfmr);
281 static inline struct mlx4_ib_qp *to_mqp(struct ib_qp *ibqp)
283 return container_of(ibqp, struct mlx4_ib_qp, ibqp);
286 static inline struct mlx4_ib_qp *to_mibqp(struct mlx4_qp *mqp)
288 return container_of(mqp, struct mlx4_ib_qp, mqp);
291 static inline struct mlx4_ib_srq *to_msrq(struct ib_srq *ibsrq)
293 return container_of(ibsrq, struct mlx4_ib_srq, ibsrq);
296 static inline struct mlx4_ib_srq *to_mibsrq(struct mlx4_srq *msrq)
298 return container_of(msrq, struct mlx4_ib_srq, msrq);
301 static inline struct mlx4_ib_ah *to_mah(struct ib_ah *ibah)
303 return container_of(ibah, struct mlx4_ib_ah, ibah);
306 int mlx4_ib_db_map_user(struct mlx4_ib_ucontext *context, unsigned long virt,
308 void mlx4_ib_db_unmap_user(struct mlx4_ib_ucontext *context, struct mlx4_db *db);
310 struct ib_mr *mlx4_ib_get_dma_mr(struct ib_pd *pd, int acc);
311 int mlx4_ib_umem_write_mtt(struct mlx4_ib_dev *dev, struct mlx4_mtt *mtt,
312 struct ib_umem *umem);
313 struct ib_mr *mlx4_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
314 u64 virt_addr, int access_flags,
315 struct ib_udata *udata);
316 int mlx4_ib_dereg_mr(struct ib_mr *mr);
317 struct ib_mr *mlx4_ib_alloc_fast_reg_mr(struct ib_pd *pd,
318 int max_page_list_len);
319 struct ib_fast_reg_page_list *mlx4_ib_alloc_fast_reg_page_list(struct ib_device *ibdev,
321 void mlx4_ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list);
323 int mlx4_ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period);
324 int mlx4_ib_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata);
325 struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev, int entries, int vector,
326 struct ib_ucontext *context,
327 struct ib_udata *udata);
328 int mlx4_ib_destroy_cq(struct ib_cq *cq);
329 int mlx4_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
330 int mlx4_ib_arm_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags);
331 void __mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);
332 void mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);
334 struct ib_ah *mlx4_ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
335 int mlx4_ib_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr);
336 int mlx4_ib_destroy_ah(struct ib_ah *ah);
338 struct ib_srq *mlx4_ib_create_srq(struct ib_pd *pd,
339 struct ib_srq_init_attr *init_attr,
340 struct ib_udata *udata);
341 struct ib_srq *mlx4_ib_create_xrc_srq(struct ib_pd *pd,
342 struct ib_cq *xrc_cq,
343 struct ib_xrcd *xrcd,
344 struct ib_srq_init_attr *init_attr,
345 struct ib_udata *udata);
346 int mlx4_ib_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
347 enum ib_srq_attr_mask attr_mask, struct ib_udata *udata);
348 int mlx4_ib_query_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr);
349 int mlx4_ib_destroy_srq(struct ib_srq *srq);
350 void mlx4_ib_free_srq_wqe(struct mlx4_ib_srq *srq, int wqe_index);
351 int mlx4_ib_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
352 struct ib_recv_wr **bad_wr);
354 struct ib_qp *mlx4_ib_create_qp(struct ib_pd *pd,
355 struct ib_qp_init_attr *init_attr,
356 struct ib_udata *udata);
357 int mlx4_ib_destroy_qp(struct ib_qp *qp);
358 int mlx4_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
359 int attr_mask, struct ib_udata *udata);
360 int mlx4_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask,
361 struct ib_qp_init_attr *qp_init_attr);
362 int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
363 struct ib_send_wr **bad_wr);
364 int mlx4_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
365 struct ib_recv_wr **bad_wr);
367 int mlx4_MAD_IFC(struct mlx4_ib_dev *dev, int ignore_mkey, int ignore_bkey,
368 int port, struct ib_wc *in_wc, struct ib_grh *in_grh,
369 void *in_mad, void *response_mad);
370 int mlx4_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
371 struct ib_wc *in_wc, struct ib_grh *in_grh,
372 struct ib_mad *in_mad, struct ib_mad *out_mad);
373 int mlx4_ib_mad_init(struct mlx4_ib_dev *dev);
374 void mlx4_ib_mad_cleanup(struct mlx4_ib_dev *dev);
376 struct ib_fmr *mlx4_ib_fmr_alloc(struct ib_pd *pd, int mr_access_flags,
377 struct ib_fmr_attr *fmr_attr);
378 int mlx4_ib_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list, int npages,
380 int mlx4_ib_unmap_fmr(struct list_head *fmr_list);
381 int mlx4_ib_fmr_dealloc(struct ib_fmr *fmr);
382 int mlx4_ib_create_xrc_rcv_qp(struct ib_qp_init_attr *init_attr,
384 int mlx4_ib_modify_xrc_rcv_qp(struct ib_xrcd *xrcd, u32 qp_num,
385 struct ib_qp_attr *attr, int attr_mask);
386 int mlx4_ib_query_xrc_rcv_qp(struct ib_xrcd *xrcd, u32 qp_num,
387 struct ib_qp_attr *attr, int attr_mask,
388 struct ib_qp_init_attr *init_attr);
389 int mlx4_ib_reg_xrc_rcv_qp(struct ib_xrcd *xrcd, void *context, u32 qp_num);
390 int mlx4_ib_unreg_xrc_rcv_qp(struct ib_xrcd *xrcd, void *context, u32 qp_num);
393 int mlx4_ib_resolve_grh(struct mlx4_ib_dev *dev, const struct ib_ah_attr *ah_attr,
394 u8 *mac, int *is_mcast, u8 port);
396 static inline int mlx4_ib_ah_grh_present(struct mlx4_ib_ah *ah)
398 u8 port = be32_to_cpu(ah->av.ib.port_pd) >> 24 & 3;
400 if (rdma_port_get_link_layer(ah->ibah.device, port) == IB_LINK_LAYER_ETHERNET)
403 return !!(ah->av.ib.g_slid & 0x80);
406 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
409 #endif /* MLX4_IB_H */