[linux-block.git] / drivers / infiniband / hw / mlx4 / mlx4_ib.h

/*
 * Copyright (c) 2006, 2007 Cisco Systems.  All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#ifndef MLX4_IB_H
#define MLX4_IB_H

#include <linux/compiler.h>
#include <linux/list.h>
#include <linux/mutex.h>

#include <rdma/ib_verbs.h>
#include <rdma/ib_umem.h>

#include <linux/mlx4/device.h>
#include <linux/mlx4/doorbell.h>

enum {
	MLX4_IB_DB_PER_PAGE	= PAGE_SIZE / 4
};

struct mlx4_ib_db_pgdir;
struct mlx4_ib_user_db_page;

struct mlx4_ib_db {
	__be32		       *db;
	union {
		struct mlx4_ib_db_pgdir	       *pgdir;
		struct mlx4_ib_user_db_page    *user_page;
	}			u;
	dma_addr_t		dma;
	int			index;
	int			order;
};

struct mlx4_ib_ucontext {
	struct ib_ucontext	ibucontext;
	struct mlx4_uar		uar;
	struct list_head	db_page_list;
	struct mutex		db_page_mutex;
};

struct mlx4_ib_pd {
	struct ib_pd		ibpd;
	u32			pdn;
};

struct mlx4_ib_cq_buf {
	struct mlx4_buf		buf;
	struct mlx4_mtt		mtt;
};

struct mlx4_ib_cq {
	struct ib_cq		ibcq;
	struct mlx4_cq		mcq;
	struct mlx4_ib_cq_buf	buf;
	struct mlx4_ib_db	db;
	spinlock_t		lock;
	struct ib_umem	       *umem;
};

struct mlx4_ib_mr {
	struct ib_mr		ibmr;
	struct mlx4_mr		mmr;
	struct ib_umem	       *umem;
};

struct mlx4_ib_wq {
	u64		       *wrid;
	spinlock_t		lock;
	int			wqe_cnt;
	int			max_post;
	int			max_gs;
	int			offset;
	int			wqe_shift;
	unsigned		head;
	unsigned		tail;
};

struct mlx4_ib_qp {
	struct ib_qp		ibqp;
	struct mlx4_qp		mqp;
	struct mlx4_buf		buf;

	struct mlx4_ib_db	db;
	struct mlx4_ib_wq	rq;

	u32			doorbell_qpn;
	__be32			sq_signal_bits;
	int			sq_spare_wqes;
	struct mlx4_ib_wq	sq;

	struct ib_umem	       *umem;
	struct mlx4_mtt		mtt;
	int			buf_size;
	struct mutex		mutex;
	u8			port;
	u8			alt_port;
	u8			atomic_rd_en;
	u8			resp_depth;
	u8			sq_no_prefetch;
	u8			state;
};

struct mlx4_ib_srq {
	struct ib_srq		ibsrq;
	struct mlx4_srq		msrq;
	struct mlx4_buf		buf;
	struct mlx4_ib_db	db;
	u64		       *wrid;
	spinlock_t		lock;
	int			head;
	int			tail;
	u16			wqe_ctr;
	struct ib_umem	       *umem;
	struct mlx4_mtt		mtt;
	struct mutex		mutex;
};

struct mlx4_ib_ah {
	struct ib_ah		ibah;
	struct mlx4_av		av;
};

struct mlx4_ib_dev {
	struct ib_device	ib_dev;
	struct mlx4_dev	       *dev;
	void __iomem	       *uar_map;

	struct list_head	pgdir_list;
	struct mutex		pgdir_mutex;

	struct mlx4_uar		priv_uar;
	u32			priv_pdn;
	MLX4_DECLARE_DOORBELL_LOCK(uar_lock);

	struct ib_mad_agent    *send_agent[MLX4_MAX_PORTS][2];
	struct ib_ah	       *sm_ah[MLX4_MAX_PORTS];
	spinlock_t		sm_lock;

	struct mutex		cap_mask_mutex;
};

static inline struct mlx4_ib_dev *to_mdev(struct ib_device *ibdev)
{
	return container_of(ibdev, struct mlx4_ib_dev, ib_dev);
}

static inline struct mlx4_ib_ucontext *to_mucontext(struct ib_ucontext *ibucontext)
{
	return container_of(ibucontext, struct mlx4_ib_ucontext, ibucontext);
}

static inline struct mlx4_ib_pd *to_mpd(struct ib_pd *ibpd)
{
	return container_of(ibpd, struct mlx4_ib_pd, ibpd);
}

static inline struct mlx4_ib_cq *to_mcq(struct ib_cq *ibcq)
{
	return container_of(ibcq, struct mlx4_ib_cq, ibcq);
}

static inline struct mlx4_ib_cq *to_mibcq(struct mlx4_cq *mcq)
{
	return container_of(mcq, struct mlx4_ib_cq, mcq);
}

static inline struct mlx4_ib_mr *to_mmr(struct ib_mr *ibmr)
{
	return container_of(ibmr, struct mlx4_ib_mr, ibmr);
}

static inline struct mlx4_ib_qp *to_mqp(struct ib_qp *ibqp)
{
	return container_of(ibqp, struct mlx4_ib_qp, ibqp);
}

static inline struct mlx4_ib_qp *to_mibqp(struct mlx4_qp *mqp)
{
	return container_of(mqp, struct mlx4_ib_qp, mqp);
}

static inline struct mlx4_ib_srq *to_msrq(struct ib_srq *ibsrq)
{
	return container_of(ibsrq, struct mlx4_ib_srq, ibsrq);
}

static inline struct mlx4_ib_srq *to_mibsrq(struct mlx4_srq *msrq)
{
	return container_of(msrq, struct mlx4_ib_srq, msrq);
}

static inline struct mlx4_ib_ah *to_mah(struct ib_ah *ibah)
{
	return container_of(ibah, struct mlx4_ib_ah, ibah);
}

int mlx4_ib_db_alloc(struct mlx4_ib_dev *dev, struct mlx4_ib_db *db, int order);
void mlx4_ib_db_free(struct mlx4_ib_dev *dev, struct mlx4_ib_db *db);
int mlx4_ib_db_map_user(struct mlx4_ib_ucontext *context, unsigned long virt,
			struct mlx4_ib_db *db);
void mlx4_ib_db_unmap_user(struct mlx4_ib_ucontext *context, struct mlx4_ib_db *db);

struct ib_mr *mlx4_ib_get_dma_mr(struct ib_pd *pd, int acc);
int mlx4_ib_umem_write_mtt(struct mlx4_ib_dev *dev, struct mlx4_mtt *mtt,
			   struct ib_umem *umem);
struct ib_mr *mlx4_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
				  u64 virt_addr, int access_flags,
				  struct ib_udata *udata);
int mlx4_ib_dereg_mr(struct ib_mr *mr);

struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev, int entries, int vector,
				struct ib_ucontext *context,
				struct ib_udata *udata);
int mlx4_ib_destroy_cq(struct ib_cq *cq);
int mlx4_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
int mlx4_ib_arm_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags);
void __mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);
void mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);

struct ib_ah *mlx4_ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
int mlx4_ib_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr);
int mlx4_ib_destroy_ah(struct ib_ah *ah);

struct ib_srq *mlx4_ib_create_srq(struct ib_pd *pd,
				  struct ib_srq_init_attr *init_attr,
				  struct ib_udata *udata);
int mlx4_ib_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
		       enum ib_srq_attr_mask attr_mask, struct ib_udata *udata);
int mlx4_ib_destroy_srq(struct ib_srq *srq);
void mlx4_ib_free_srq_wqe(struct mlx4_ib_srq *srq, int wqe_index);
int mlx4_ib_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
			  struct ib_recv_wr **bad_wr);

struct ib_qp *mlx4_ib_create_qp(struct ib_pd *pd,
				struct ib_qp_init_attr *init_attr,
				struct ib_udata *udata);
int mlx4_ib_destroy_qp(struct ib_qp *qp);
int mlx4_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
		      int attr_mask, struct ib_udata *udata);
int mlx4_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask,
		     struct ib_qp_init_attr *qp_init_attr);
int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
		      struct ib_send_wr **bad_wr);
int mlx4_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
		      struct ib_recv_wr **bad_wr);

int mlx4_MAD_IFC(struct mlx4_ib_dev *dev, int ignore_mkey, int ignore_bkey,
		 int port, struct ib_wc *in_wc, struct ib_grh *in_grh,
		 void *in_mad, void *response_mad);
int mlx4_ib_process_mad(struct ib_device *ibdev, int mad_flags,	u8 port_num,
			struct ib_wc *in_wc, struct ib_grh *in_grh,
			struct ib_mad *in_mad, struct ib_mad *out_mad);
int mlx4_ib_mad_init(struct mlx4_ib_dev *dev);
void mlx4_ib_mad_cleanup(struct mlx4_ib_dev *dev);

static inline int mlx4_ib_ah_grh_present(struct mlx4_ib_ah *ah)
{
	return !!(ah->av.g_slid & 0x80);
}

#endif /* MLX4_IB_H */
Commit	Line	Data
225c7b1f RD	1	/*
	2	* Copyright (c) 2006, 2007 Cisco Systems. All rights reserved.
	3	*
	4	* This software is available to you under a choice of one of two
	5	* licenses. You may choose to be licensed under the terms of the GNU
	6	* General Public License (GPL) Version 2, available from the file
	7	* COPYING in the main directory of this source tree, or the
	8	* OpenIB.org BSD license below:
	9	*
	10	* Redistribution and use in source and binary forms, with or
	11	* without modification, are permitted provided that the following
	12	* conditions are met:
	13	*
	14	* - Redistributions of source code must retain the above
	15	* copyright notice, this list of conditions and the following
	16	* disclaimer.
	17	*
	18	* - Redistributions in binary form must reproduce the above
	19	* copyright notice, this list of conditions and the following
	20	* disclaimer in the documentation and/or other materials
	21	* provided with the distribution.
	22	*
	23	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	24	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	25	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	26	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	27	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	28	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	29	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	30	* SOFTWARE.
	31	*/
	32
	33	#ifndef MLX4_IB_H
	34	#define MLX4_IB_H
	35
	36	#include <linux/compiler.h>
	37	#include <linux/list.h>
63019d93	38	#include <linux/mutex.h>
225c7b1f RD	39
	40	#include <rdma/ib_verbs.h>
	41	#include <rdma/ib_umem.h>
	42
	43	#include <linux/mlx4/device.h>
	44	#include <linux/mlx4/doorbell.h>
	45
	46	enum {
	47	MLX4_IB_DB_PER_PAGE = PAGE_SIZE / 4
	48	};
	49
	50	struct mlx4_ib_db_pgdir;
	51	struct mlx4_ib_user_db_page;
	52
	53	struct mlx4_ib_db {
	54	__be32 *db;
	55	union {
	56	struct mlx4_ib_db_pgdir *pgdir;
	57	struct mlx4_ib_user_db_page *user_page;
	58	} u;
	59	dma_addr_t dma;
	60	int index;
	61	int order;
	62	};
	63
	64	struct mlx4_ib_ucontext {
	65	struct ib_ucontext ibucontext;
	66	struct mlx4_uar uar;
	67	struct list_head db_page_list;
	68	struct mutex db_page_mutex;
	69	};
	70
	71	struct mlx4_ib_pd {
	72	struct ib_pd ibpd;
	73	u32 pdn;
	74	};
	75
	76	struct mlx4_ib_cq_buf {
	77	struct mlx4_buf buf;
	78	struct mlx4_mtt mtt;
	79	};
	80
	81	struct mlx4_ib_cq {
	82	struct ib_cq ibcq;
	83	struct mlx4_cq mcq;
	84	struct mlx4_ib_cq_buf buf;
	85	struct mlx4_ib_db db;
	86	spinlock_t lock;
	87	struct ib_umem *umem;
	88	};
	89
	90	struct mlx4_ib_mr {
	91	struct ib_mr ibmr;
	92	struct mlx4_mr mmr;
	93	struct ib_umem *umem;
	94	};
	95
	96	struct mlx4_ib_wq {
	97	u64 *wrid;
	98	spinlock_t lock;
0e6e7416 RD	99	int wqe_cnt;
0e6e7416 RD	100	int max_post;
225c7b1f RD	101	int max_gs;
	102	int offset;
	103	int wqe_shift;
	104	unsigned head;
	105	unsigned tail;
	106	};
	107
	108	struct mlx4_ib_qp {
	109	struct ib_qp ibqp;
	110	struct mlx4_qp mqp;
	111	struct mlx4_buf buf;
	112
	113	struct mlx4_ib_db db;
	114	struct mlx4_ib_wq rq;
	115
	116	u32 doorbell_qpn;
	117	__be32 sq_signal_bits;
0e6e7416	118	int sq_spare_wqes;
225c7b1f RD	119	struct mlx4_ib_wq sq;
	120
	121	struct ib_umem *umem;
	122	struct mlx4_mtt mtt;
	123	int buf_size;
	124	struct mutex mutex;
	125	u8 port;
	126	u8 alt_port;
	127	u8 atomic_rd_en;
	128	u8 resp_depth;
0e6e7416	129	u8 sq_no_prefetch;
225c7b1f RD	130	u8 state;
	131	};
	132
	133	struct mlx4_ib_srq {
	134	struct ib_srq ibsrq;
	135	struct mlx4_srq msrq;
	136	struct mlx4_buf buf;
	137	struct mlx4_ib_db db;
	138	u64 *wrid;
	139	spinlock_t lock;
	140	int head;
	141	int tail;
	142	u16 wqe_ctr;
	143	struct ib_umem *umem;
	144	struct mlx4_mtt mtt;
	145	struct mutex mutex;
	146	};
	147
	148	struct mlx4_ib_ah {
	149	struct ib_ah ibah;
	150	struct mlx4_av av;
	151	};
	152
	153	struct mlx4_ib_dev {
	154	struct ib_device ib_dev;
	155	struct mlx4_dev *dev;
	156	void __iomem *uar_map;
	157
	158	struct list_head pgdir_list;
	159	struct mutex pgdir_mutex;
	160
	161	struct mlx4_uar priv_uar;
	162	u32 priv_pdn;
	163	MLX4_DECLARE_DOORBELL_LOCK(uar_lock);
	164
	165	struct ib_mad_agent *send_agent[MLX4_MAX_PORTS][2];
	166	struct ib_ah *sm_ah[MLX4_MAX_PORTS];
	167	spinlock_t sm_lock;
	168
	169	struct mutex cap_mask_mutex;
	170	};
	171
	172	static inline struct mlx4_ib_dev to_mdev(struct ib_device ibdev)
	173	{
	174	return container_of(ibdev, struct mlx4_ib_dev, ib_dev);
	175	}
	176
	177	static inline struct mlx4_ib_ucontext to_mucontext(struct ib_ucontext ibucontext)
	178	{
	179	return container_of(ibucontext, struct mlx4_ib_ucontext, ibucontext);
	180	}
	181
	182	static inline struct mlx4_ib_pd to_mpd(struct ib_pd ibpd)
	183	{
	184	return container_of(ibpd, struct mlx4_ib_pd, ibpd);
	185	}
	186
	187	static inline struct mlx4_ib_cq to_mcq(struct ib_cq ibcq)
	188	{
	189	return container_of(ibcq, struct mlx4_ib_cq, ibcq);
	190	}
	191
	192	static inline struct mlx4_ib_cq to_mibcq(struct mlx4_cq mcq)
	193	{
194	return container_of(mcq, struct mlx4_ib_cq, mcq);
195	}
196
197	static inline struct mlx4_ib_mr to_mmr(struct ib_mr ibmr)
198	{
199	return container_of(ibmr, struct mlx4_ib_mr, ibmr);
200	}
201
202	static inline struct mlx4_ib_qp to_mqp(struct ib_qp ibqp)
203	{
204	return container_of(ibqp, struct mlx4_ib_qp, ibqp);
205	}
206
207	static inline struct mlx4_ib_qp to_mibqp(struct mlx4_qp mqp)
208	{
209	return container_of(mqp, struct mlx4_ib_qp, mqp);
210	}
211
212	static inline struct mlx4_ib_srq to_msrq(struct ib_srq ibsrq)
213	{
214	return container_of(ibsrq, struct mlx4_ib_srq, ibsrq);
215	}
216
217	static inline struct mlx4_ib_srq to_mibsrq(struct mlx4_srq msrq)
218	{
219	return container_of(msrq, struct mlx4_ib_srq, msrq);
220	}
221
222	static inline struct mlx4_ib_ah to_mah(struct ib_ah ibah)
223	{
224	return container_of(ibah, struct mlx4_ib_ah, ibah);
225	}
226
227	int mlx4_ib_db_alloc(struct mlx4_ib_dev dev, struct mlx4_ib_db db, int order);
228	void mlx4_ib_db_free(struct mlx4_ib_dev dev, struct mlx4_ib_db db);
229	int mlx4_ib_db_map_user(struct mlx4_ib_ucontext *context, unsigned long virt,
230	struct mlx4_ib_db *db);
231	void mlx4_ib_db_unmap_user(struct mlx4_ib_ucontext context, struct mlx4_ib_db db);
232
233	struct ib_mr mlx4_ib_get_dma_mr(struct ib_pd pd, int acc);
234	int mlx4_ib_umem_write_mtt(struct mlx4_ib_dev dev, struct mlx4_mtt mtt,
235	struct ib_umem *umem);
236	struct ib_mr mlx4_ib_reg_user_mr(struct ib_pd pd, u64 start, u64 length,
237	u64 virt_addr, int access_flags,
238	struct ib_udata *udata);
239	int mlx4_ib_dereg_mr(struct ib_mr *mr);
240
241	struct ib_cq mlx4_ib_create_cq(struct ib_device ibdev, int entries, int vector,
242	struct ib_ucontext *context,
243	struct ib_udata *udata);
244	int mlx4_ib_destroy_cq(struct ib_cq *cq);
245	int mlx4_ib_poll_cq(struct ib_cq ibcq, int num_entries, struct ib_wc wc);
246	int mlx4_ib_arm_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags);
247	void __mlx4_ib_cq_clean(struct mlx4_ib_cq cq, u32 qpn, struct mlx4_ib_srq srq);
248	void mlx4_ib_cq_clean(struct mlx4_ib_cq cq, u32 qpn, struct mlx4_ib_srq srq);
249
250	struct ib_ah mlx4_ib_create_ah(struct ib_pd pd, struct ib_ah_attr *ah_attr);
251	int mlx4_ib_query_ah(struct ib_ah ibah, struct ib_ah_attr ah_attr);
252	int mlx4_ib_destroy_ah(struct ib_ah *ah);
253
254	struct ib_srq mlx4_ib_create_srq(struct ib_pd pd,
255	struct ib_srq_init_attr *init_attr,
256	struct ib_udata *udata);
257	int mlx4_ib_modify_srq(struct ib_srq ibsrq, struct ib_srq_attr attr,
258	enum ib_srq_attr_mask attr_mask, struct ib_udata *udata);
259	int mlx4_ib_destroy_srq(struct ib_srq *srq);
260	void mlx4_ib_free_srq_wqe(struct mlx4_ib_srq *srq, int wqe_index);
261	int mlx4_ib_post_srq_recv(struct ib_srq ibsrq, struct ib_recv_wr wr,
262	struct ib_recv_wr **bad_wr);
263
264	struct ib_qp mlx4_ib_create_qp(struct ib_pd pd,
265	struct ib_qp_init_attr *init_attr,
266	struct ib_udata *udata);
267	int mlx4_ib_destroy_qp(struct ib_qp *qp);
268	int mlx4_ib_modify_qp(struct ib_qp ibqp, struct ib_qp_attr attr,
269	int attr_mask, struct ib_udata *udata);
6a775e2b JM	270	int mlx4_ib_query_qp(struct ib_qp ibqp, struct ib_qp_attr qp_attr, int qp_attr_mask,
6a775e2b JM	271	struct ib_qp_init_attr *qp_init_attr);
225c7b1f RD	272	int mlx4_ib_post_send(struct ib_qp ibqp, struct ib_send_wr wr,
	273	struct ib_send_wr **bad_wr);
	274	int mlx4_ib_post_recv(struct ib_qp ibqp, struct ib_recv_wr wr,
	275	struct ib_recv_wr **bad_wr);
	276
	277	int mlx4_MAD_IFC(struct mlx4_ib_dev *dev, int ignore_mkey, int ignore_bkey,
	278	int port, struct ib_wc in_wc, struct ib_grh in_grh,
	279	void in_mad, void response_mad);
	280	int mlx4_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
	281	struct ib_wc in_wc, struct ib_grh in_grh,
	282	struct ib_mad in_mad, struct ib_mad out_mad);
	283	int mlx4_ib_mad_init(struct mlx4_ib_dev *dev);
	284	void mlx4_ib_mad_cleanup(struct mlx4_ib_dev *dev);
	285
	286	static inline int mlx4_ib_ah_grh_present(struct mlx4_ib_ah *ah)
	287	{
	288	return !!(ah->av.g_slid & 0x80);
	289	}
	290
	291	#endif /* MLX4_IB_H */