drivers/infiniband/hw/mlx4/mlx4_ib.h - maze/linux - Git at Google

 /*
  * 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 <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			max;
 	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;
 	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			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_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 */
	/*
	* 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 <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 max;
	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;
	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 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_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 */