[linux-block.git] / drivers / infiniband / core / mad_priv.h

/*
 * Copyright (c) 2004, 2005, Voltaire, Inc. All rights reserved.
 * Copyright (c) 2005 Intel Corporation. All rights reserved.
 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
 * Copyright (c) 2009 HNR Consulting. 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 __IB_MAD_PRIV_H__
#define __IB_MAD_PRIV_H__

#include <linux/completion.h>
#include <linux/err.h>
#include <linux/workqueue.h>
#include <rdma/ib_mad.h>
#include <rdma/ib_smi.h>

#define IB_MAD_QPS_CORE		2 /* Always QP0 and QP1 as a minimum */

/* QP and CQ parameters */
#define IB_MAD_QP_SEND_SIZE	128
#define IB_MAD_QP_RECV_SIZE	512
#define IB_MAD_QP_MIN_SIZE	64
#define IB_MAD_QP_MAX_SIZE	8192
#define IB_MAD_SEND_REQ_MAX_SG	2
#define IB_MAD_RECV_REQ_MAX_SG	1

#define IB_MAD_SEND_Q_PSN	0

/* Registration table sizes */
#define MAX_MGMT_CLASS		80
#define MAX_MGMT_VERSION	8
#define MAX_MGMT_OUI		8
#define MAX_MGMT_VENDOR_RANGE2	(IB_MGMT_CLASS_VENDOR_RANGE2_END - \
				IB_MGMT_CLASS_VENDOR_RANGE2_START + 1)

struct ib_mad_list_head {
	struct list_head list;
	struct ib_mad_queue *mad_queue;
};

struct ib_mad_private_header {
	struct ib_mad_list_head mad_list;
	struct ib_mad_recv_wc recv_wc;
	struct ib_wc wc;
	u64 mapping;
} __attribute__ ((packed));

struct ib_mad_private {
	struct ib_mad_private_header header;
	struct ib_grh grh;
	union {
		struct ib_mad mad;
		struct ib_rmpp_mad rmpp_mad;
		struct ib_smp smp;
	} mad;
} __attribute__ ((packed));

struct ib_rmpp_segment {
	struct list_head list;
	u32 num;
	u8 data[0];
};

struct ib_mad_agent_private {
	struct list_head agent_list;
	struct ib_mad_agent agent;
	struct ib_mad_reg_req *reg_req;
	struct ib_mad_qp_info *qp_info;

	spinlock_t lock;
	struct list_head send_list;
	struct list_head wait_list;
	struct list_head done_list;
	struct delayed_work timed_work;
	unsigned long timeout;
	struct list_head local_list;
	struct work_struct local_work;
	struct list_head rmpp_list;

	atomic_t refcount;
	struct completion comp;
};

struct ib_mad_snoop_private {
	struct ib_mad_agent agent;
	struct ib_mad_qp_info *qp_info;
	int snoop_index;
	int mad_snoop_flags;
	atomic_t refcount;
	struct completion comp;
};

struct ib_mad_send_wr_private {
	struct ib_mad_list_head mad_list;
	struct list_head agent_list;
	struct ib_mad_agent_private *mad_agent_priv;
	struct ib_mad_send_buf send_buf;
	u64 header_mapping;
	u64 payload_mapping;
	struct ib_send_wr send_wr;
	struct ib_sge sg_list[IB_MAD_SEND_REQ_MAX_SG];
	__be64 tid;
	unsigned long timeout;
	int max_retries;
	int retries_left;
	int retry;
	int refcount;
	enum ib_wc_status status;

	/* RMPP control */
	struct list_head rmpp_list;
	struct ib_rmpp_segment *last_ack_seg;
	struct ib_rmpp_segment *cur_seg;
	int last_ack;
	int seg_num;
	int newwin;
	int pad;
};

struct ib_mad_local_private {
	struct list_head completion_list;
	struct ib_mad_private *mad_priv;
	struct ib_mad_agent_private *recv_mad_agent;
	struct ib_mad_send_wr_private *mad_send_wr;
};

struct ib_mad_mgmt_method_table {
	struct ib_mad_agent_private *agent[IB_MGMT_MAX_METHODS];
};

struct ib_mad_mgmt_class_table {
	struct ib_mad_mgmt_method_table *method_table[MAX_MGMT_CLASS];
};

struct ib_mad_mgmt_vendor_class {
	u8	oui[MAX_MGMT_OUI][3];
	struct ib_mad_mgmt_method_table *method_table[MAX_MGMT_OUI];
};

struct ib_mad_mgmt_vendor_class_table {
	struct ib_mad_mgmt_vendor_class *vendor_class[MAX_MGMT_VENDOR_RANGE2];
};

struct ib_mad_mgmt_version_table {
	struct ib_mad_mgmt_class_table *class;
	struct ib_mad_mgmt_vendor_class_table *vendor;
};

struct ib_mad_queue {
	spinlock_t lock;
	struct list_head list;
	int count;
	int max_active;
	struct ib_mad_qp_info *qp_info;
};

struct ib_mad_qp_info {
	struct ib_mad_port_private *port_priv;
	struct ib_qp *qp;
	struct ib_mad_queue send_queue;
	struct ib_mad_queue recv_queue;
	struct list_head overflow_list;
	spinlock_t snoop_lock;
	struct ib_mad_snoop_private **snoop_table;
	int snoop_table_size;
	atomic_t snoop_count;
};

struct ib_mad_port_private {
	struct list_head port_list;
	struct ib_device *device;
	int port_num;
	struct ib_cq *cq;
	struct ib_pd *pd;
	struct ib_mr *mr;

	spinlock_t reg_lock;
	struct ib_mad_mgmt_version_table version[MAX_MGMT_VERSION];
	struct list_head agent_list;
	struct workqueue_struct *wq;
	struct work_struct work;
	struct ib_mad_qp_info qp_info[IB_MAD_QPS_CORE];
};

int ib_send_mad(struct ib_mad_send_wr_private *mad_send_wr);

struct ib_mad_send_wr_private *
ib_find_send_mad(const struct ib_mad_agent_private *mad_agent_priv,
		 const struct ib_mad_recv_wc *mad_recv_wc);

void ib_mad_complete_send_wr(struct ib_mad_send_wr_private *mad_send_wr,
			     struct ib_mad_send_wc *mad_send_wc);

void ib_mark_mad_done(struct ib_mad_send_wr_private *mad_send_wr);

void ib_reset_mad_timeout(struct ib_mad_send_wr_private *mad_send_wr,
			  int timeout_ms);

#endif	/* __IB_MAD_PRIV_H__ */
Commit	Line	Data
1da177e4 LT	1	/*
1da177e4 LT	2	* Copyright (c) 2004, 2005, Voltaire, Inc. All rights reserved.
fa619a77 HR	3	* Copyright (c) 2005 Intel Corporation. All rights reserved.
fa619a77 HR	4	* Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
b76aabc3	5	* Copyright (c) 2009 HNR Consulting. All rights reserved.
1da177e4 LT	6	*
	7	* This software is available to you under a choice of one of two
	8	* licenses. You may choose to be licensed under the terms of the GNU
	9	* General Public License (GPL) Version 2, available from the file
	10	* COPYING in the main directory of this source tree, or the
	11	* OpenIB.org BSD license below:
	12	*
	13	* Redistribution and use in source and binary forms, with or
	14	* without modification, are permitted provided that the following
	15	* conditions are met:
	16	*
	17	* - Redistributions of source code must retain the above
	18	* copyright notice, this list of conditions and the following
	19	* disclaimer.
	20	*
	21	* - Redistributions in binary form must reproduce the above
	22	* copyright notice, this list of conditions and the following
	23	* disclaimer in the documentation and/or other materials
	24	* provided with the distribution.
	25	*
	26	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	27	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	28	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	29	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	30	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	31	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	32	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	33	* SOFTWARE.
1da177e4 LT	34	*/
	35
	36	#ifndef __IB_MAD_PRIV_H__
	37	#define __IB_MAD_PRIV_H__
	38
1b52fa98	39	#include <linux/completion.h>
d7b20045	40	#include <linux/err.h>
1da177e4	41	#include <linux/workqueue.h>
a4d61e84 RD	42	#include <rdma/ib_mad.h>
a4d61e84 RD	43	#include <rdma/ib_smi.h>
1da177e4	44
1da177e4 LT	45	#define IB_MAD_QPS_CORE 2 /* Always QP0 and QP1 as a minimum */
	46
	47	/* QP and CQ parameters */
	48	#define IB_MAD_QP_SEND_SIZE 128
	49	#define IB_MAD_QP_RECV_SIZE 512
b76aabc3 HR	50	#define IB_MAD_QP_MIN_SIZE 64
b76aabc3 HR	51	#define IB_MAD_QP_MAX_SIZE 8192
1da177e4 LT	52	#define IB_MAD_SEND_REQ_MAX_SG 2
	53	#define IB_MAD_RECV_REQ_MAX_SG 1
	54
	55	#define IB_MAD_SEND_Q_PSN 0
	56
	57	/* Registration table sizes */
	58	#define MAX_MGMT_CLASS 80
	59	#define MAX_MGMT_VERSION 8
	60	#define MAX_MGMT_OUI 8
	61	#define MAX_MGMT_VENDOR_RANGE2 (IB_MGMT_CLASS_VENDOR_RANGE2_END - \
	62	IB_MGMT_CLASS_VENDOR_RANGE2_START + 1)
	63
	64	struct ib_mad_list_head {
	65	struct list_head list;
	66	struct ib_mad_queue *mad_queue;
	67	};
	68
	69	struct ib_mad_private_header {
	70	struct ib_mad_list_head mad_list;
	71	struct ib_mad_recv_wc recv_wc;
24239aff	72	struct ib_wc wc;
1527106f	73	u64 mapping;
1da177e4 LT	74	} __attribute__ ((packed));
	75
	76	struct ib_mad_private {
	77	struct ib_mad_private_header header;
	78	struct ib_grh grh;
	79	union {
	80	struct ib_mad mad;
	81	struct ib_rmpp_mad rmpp_mad;
	82	struct ib_smp smp;
	83	} mad;
	84	} __attribute__ ((packed));
	85
f36e1793 JM	86	struct ib_rmpp_segment {
	87	struct list_head list;
	88	u32 num;
	89	u8 data[0];
	90	};
	91
1da177e4 LT	92	struct ib_mad_agent_private {
	93	struct list_head agent_list;
	94	struct ib_mad_agent agent;
	95	struct ib_mad_reg_req *reg_req;
	96	struct ib_mad_qp_info *qp_info;
	97
	98	spinlock_t lock;
	99	struct list_head send_list;
	100	struct list_head wait_list;
6a0c435e	101	struct list_head done_list;
c4028958	102	struct delayed_work timed_work;
1da177e4 LT	103	unsigned long timeout;
	104	struct list_head local_list;
	105	struct work_struct local_work;
fa619a77	106	struct list_head rmpp_list;
1da177e4 LT	107
1da177e4 LT	108	atomic_t refcount;
1b52fa98	109	struct completion comp;
1da177e4 LT	110	};
	111
	112	struct ib_mad_snoop_private {
	113	struct ib_mad_agent agent;
	114	struct ib_mad_qp_info *qp_info;
	115	int snoop_index;
	116	int mad_snoop_flags;
	117	atomic_t refcount;
1b52fa98	118	struct completion comp;
1da177e4 LT	119	};
	120
	121	struct ib_mad_send_wr_private {
	122	struct ib_mad_list_head mad_list;
	123	struct list_head agent_list;
d760ce8f	124	struct ib_mad_agent_private *mad_agent_priv;
34816ad9	125	struct ib_mad_send_buf send_buf;
1527106f RC	126	u64 header_mapping;
1527106f RC	127	u64 payload_mapping;
1da177e4 LT	128	struct ib_send_wr send_wr;
1da177e4 LT	129	struct ib_sge sg_list[IB_MAD_SEND_REQ_MAX_SG];
97f52eb4	130	__be64 tid;
1da177e4	131	unsigned long timeout;
4fc8cd49 SH	132	int max_retries;
4fc8cd49 SH	133	int retries_left;
1da177e4 LT	134	int retry;
	135	int refcount;
	136	enum ib_wc_status status;
fa619a77 HR	137
fa619a77 HR	138	/* RMPP control */
f36e1793 JM	139	struct list_head rmpp_list;
	140	struct ib_rmpp_segment *last_ack_seg;
	141	struct ib_rmpp_segment *cur_seg;
fa619a77 HR	142	int last_ack;
	143	int seg_num;
	144	int newwin;
fa619a77	145	int pad;
1da177e4 LT	146	};
	147
	148	struct ib_mad_local_private {
	149	struct list_head completion_list;
	150	struct ib_mad_private *mad_priv;
	151	struct ib_mad_agent_private *recv_mad_agent;
34816ad9	152	struct ib_mad_send_wr_private *mad_send_wr;
1da177e4 LT	153	};
	154
	155	struct ib_mad_mgmt_method_table {
	156	struct ib_mad_agent_private *agent[IB_MGMT_MAX_METHODS];
	157	};
	158
	159	struct ib_mad_mgmt_class_table {
	160	struct ib_mad_mgmt_method_table *method_table[MAX_MGMT_CLASS];
	161	};
	162
	163	struct ib_mad_mgmt_vendor_class {
	164	u8 oui[MAX_MGMT_OUI][3];
	165	struct ib_mad_mgmt_method_table *method_table[MAX_MGMT_OUI];
	166	};
	167
	168	struct ib_mad_mgmt_vendor_class_table {
	169	struct ib_mad_mgmt_vendor_class *vendor_class[MAX_MGMT_VENDOR_RANGE2];
	170	};
	171
	172	struct ib_mad_mgmt_version_table {
	173	struct ib_mad_mgmt_class_table *class;
	174	struct ib_mad_mgmt_vendor_class_table *vendor;
	175	};
	176
	177	struct ib_mad_queue {
	178	spinlock_t lock;
	179	struct list_head list;
	180	int count;
	181	int max_active;
	182	struct ib_mad_qp_info *qp_info;
	183	};
	184
	185	struct ib_mad_qp_info {
	186	struct ib_mad_port_private *port_priv;
	187	struct ib_qp *qp;
	188	struct ib_mad_queue send_queue;
	189	struct ib_mad_queue recv_queue;
	190	struct list_head overflow_list;
	191	spinlock_t snoop_lock;
	192	struct ib_mad_snoop_private **snoop_table;
	193	int snoop_table_size;
	194	atomic_t snoop_count;
	195	};
	196
	197	struct ib_mad_port_private {
	198	struct list_head port_list;
	199	struct ib_device *device;
	200	int port_num;
	201	struct ib_cq *cq;
	202	struct ib_pd *pd;
	203	struct ib_mr *mr;
	204
	205	spinlock_t reg_lock;
	206	struct ib_mad_mgmt_version_table version[MAX_MGMT_VERSION];
	207	struct list_head agent_list;
	208	struct workqueue_struct *wq;
	209	struct work_struct work;
	210	struct ib_mad_qp_info qp_info[IB_MAD_QPS_CORE];
	211	};
	212
fa619a77 HR	213	int ib_send_mad(struct ib_mad_send_wr_private *mad_send_wr);
	214
	215	struct ib_mad_send_wr_private *
f766c58f IW	216	ib_find_send_mad(const struct ib_mad_agent_private *mad_agent_priv,
f766c58f IW	217	const struct ib_mad_recv_wc *mad_recv_wc);
fa619a77 HR	218
	219	void ib_mad_complete_send_wr(struct ib_mad_send_wr_private *mad_send_wr,
	220	struct ib_mad_send_wc *mad_send_wc);
	221
	222	void ib_mark_mad_done(struct ib_mad_send_wr_private *mad_send_wr);
	223
	224	void ib_reset_mad_timeout(struct ib_mad_send_wr_private *mad_send_wr,
	225	int timeout_ms);
	226
1da177e4	227	#endif /* __IB_MAD_PRIV_H__ */