drivers/infiniband/hw/ocrdma/ocrdma.h - linux/kernel/git/gregkh/tty - Git at Google

 /*******************************************************************
  * This file is part of the Emulex RoCE Device Driver for          *
  * RoCE (RDMA over Converged Ethernet) adapters.                   *
  * Copyright (C) 2008-2012 Emulex. All rights reserved.            *
  * EMULEX and SLI are trademarks of Emulex.                        *
  * www.emulex.com                                                  *
  *                                                                 *
  * This program is free software; you can redistribute it and/or   *
  * modify it under the terms of version 2 of the GNU General       *
  * Public License as published by the Free Software Foundation.    *
  * This program is distributed in the hope that it will be useful. *
  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  * more details, a copy of which can be found in the file COPYING  *
  * included with this package.                                     *
  *
  * Contact Information:
  * linux-drivers@emulex.com
  *
  * Emulex
  * 3333 Susan Street
  * Costa Mesa, CA 92626
  *******************************************************************/

 #ifndef __OCRDMA_H__
 #define __OCRDMA_H__

 #include <linux/mutex.h>
 #include <linux/list.h>
 #include <linux/spinlock.h>
 #include <linux/pci.h>

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

 #include <be_roce.h>
 #include "ocrdma_sli.h"

 #define OCRDMA_ROCE_DEV_VERSION "1.0.0"
 #define OCRDMA_NODE_DESC "Emulex OneConnect RoCE HCA"

 #define ocrdma_err(format, arg...) printk(KERN_ERR format, ##arg)

 #define OCRDMA_MAX_AH 512

 #define OCRDMA_UVERBS(CMD_NAME) (1ull << IB_USER_VERBS_CMD_##CMD_NAME)

 struct ocrdma_dev_attr {
 	u8 fw_ver[32];
 	u32 vendor_id;
 	u32 device_id;
 	u16 max_pd;
 	u16 max_cq;
 	u16 max_cqe;
 	u16 max_qp;
 	u16 max_wqe;
 	u16 max_rqe;
 	u32 max_inline_data;
 	int max_send_sge;
 	int max_recv_sge;
 	int max_srq_sge;
 	int max_mr;
 	u64 max_mr_size;
 	u32 max_num_mr_pbl;
 	int max_fmr;
 	int max_map_per_fmr;
 	int max_pages_per_frmr;
 	u16 max_ord_per_qp;
 	u16 max_ird_per_qp;

 	int device_cap_flags;
 	u8 cq_overflow_detect;
 	u8 srq_supported;

 	u32 wqe_size;
 	u32 rqe_size;
 	u32 ird_page_size;
 	u8 local_ca_ack_delay;
 	u8 ird;
 	u8 num_ird_pages;
 };

 struct ocrdma_pbl {
 	void *va;
 	dma_addr_t pa;
 };

 struct ocrdma_queue_info {
 	void *va;
 	dma_addr_t dma;
 	u32 size;
 	u16 len;
 	u16 entry_size;		/* Size of an element in the queue */
 	u16 id;			/* qid, where to ring the doorbell. */
 	u16 head, tail;
 	bool created;
 	atomic_t used;		/* Number of valid elements in the queue */
 };

 struct ocrdma_eq {
 	struct ocrdma_queue_info q;
 	u32 vector;
 	int cq_cnt;
 	struct ocrdma_dev *dev;
 	char irq_name[32];
 };

 struct ocrdma_mq {
 	struct ocrdma_queue_info sq;
 	struct ocrdma_queue_info cq;
 	bool rearm_cq;
 };

 struct mqe_ctx {
 	struct mutex lock; /* for serializing mailbox commands on MQ */
 	wait_queue_head_t cmd_wait;
 	u32 tag;
 	u16 cqe_status;
 	u16 ext_status;
 	bool cmd_done;
 };

 struct ocrdma_dev {
 	struct ib_device ibdev;
 	struct ocrdma_dev_attr attr;

 	struct mutex dev_lock; /* provides syncronise access to device data */
 	spinlock_t flush_q_lock ____cacheline_aligned;

 	struct ocrdma_cq **cq_tbl;
 	struct ocrdma_qp **qp_tbl;

 	struct ocrdma_eq meq;
 	struct ocrdma_eq *qp_eq_tbl;
 	int eq_cnt;
 	u16 base_eqid;
 	u16 max_eq;

 	union ib_gid *sgid_tbl;
 	/* provided synchronization to sgid table for
 	 * updating gid entries triggered by notifier.
 	 */
 	spinlock_t sgid_lock;

 	int gsi_qp_created;
 	struct ocrdma_cq *gsi_sqcq;
 	struct ocrdma_cq *gsi_rqcq;

 	struct {
 		struct ocrdma_av *va;
 		dma_addr_t pa;
 		u32 size;
 		u32 num_ah;
 		/* provide synchronization for av
 		 * entry allocations.
 		 */
 		spinlock_t lock;
 		u32 ahid;
 		struct ocrdma_pbl pbl;
 	} av_tbl;

 	void *mbx_cmd;
 	struct ocrdma_mq mq;
 	struct mqe_ctx mqe_ctx;

 	struct be_dev_info nic_info;

 	struct list_head entry;
 	struct rcu_head rcu;
 	int id;
 };

 struct ocrdma_cq {
 	struct ib_cq ibcq;
 	struct ocrdma_dev *dev;
 	struct ocrdma_cqe *va;
 	u32 phase;
 	u32 getp;	/* pointer to pending wrs to
 			 * return to stack, wrap arounds
 			 * at max_hw_cqe
 			 */
 	u32 max_hw_cqe;
 	bool phase_change;
 	bool armed, solicited;
 	bool arm_needed;

 	spinlock_t cq_lock ____cacheline_aligned; /* provide synchronization
 						   * to cq polling
 						   */
 	/* syncronizes cq completion handler invoked from multiple context */
 	spinlock_t comp_handler_lock ____cacheline_aligned;
 	u16 id;
 	u16 eqn;

 	struct ocrdma_ucontext *ucontext;
 	dma_addr_t pa;
 	u32 len;
 	atomic_t use_cnt;

 	/* head of all qp's sq and rq for which cqes need to be flushed
 	 * by the software.
 	 */
 	struct list_head sq_head, rq_head;
 };

 struct ocrdma_pd {
 	struct ib_pd ibpd;
 	struct ocrdma_dev *dev;
 	struct ocrdma_ucontext *uctx;
 	atomic_t use_cnt;
 	u32 id;
 	int num_dpp_qp;
 	u32 dpp_page;
 	bool dpp_enabled;
 };

 struct ocrdma_ah {
 	struct ib_ah ibah;
 	struct ocrdma_dev *dev;
 	struct ocrdma_av *av;
 	u16 sgid_index;
 	u32 id;
 };

 struct ocrdma_qp_hwq_info {
 	u8 *va;			/* virtual address */
 	u32 max_sges;
 	u32 head, tail;
 	u32 entry_size;
 	u32 max_cnt;
 	u32 max_wqe_idx;
 	u16 dbid;		/* qid, where to ring the doorbell. */
 	u32 len;
 	dma_addr_t pa;
 };

 struct ocrdma_srq {
 	struct ib_srq ibsrq;
 	struct ocrdma_dev *dev;
 	u8 __iomem *db;
 	/* provide synchronization to multiple context(s) posting rqe */
 	spinlock_t q_lock ____cacheline_aligned;

 	struct ocrdma_qp_hwq_info rq;
 	struct ocrdma_pd *pd;
 	atomic_t use_cnt;
 	u32 id;
 	u64 *rqe_wr_id_tbl;
 	u32 *idx_bit_fields;
 	u32 bit_fields_len;
 };

 struct ocrdma_qp {
 	struct ib_qp ibqp;
 	struct ocrdma_dev *dev;

 	u8 __iomem *sq_db;
 	/* provide synchronization to multiple context(s) posting wqe, rqe */
 	spinlock_t q_lock ____cacheline_aligned;
 	struct ocrdma_qp_hwq_info sq;
 	struct {
 		uint64_t wrid;
 		uint16_t dpp_wqe_idx;
 		uint16_t dpp_wqe;
 		uint8_t  signaled;
 		uint8_t  rsvd[3];
 	} *wqe_wr_id_tbl;
 	u32 max_inline_data;
 	struct ocrdma_cq *sq_cq;
 	/* list maintained per CQ to flush SQ errors */
 	struct list_head sq_entry;

 	u8 __iomem *rq_db;
 	struct ocrdma_qp_hwq_info rq;
 	u64 *rqe_wr_id_tbl;
 	struct ocrdma_cq *rq_cq;
 	struct ocrdma_srq *srq;
 	/* list maintained per CQ to flush RQ errors */
 	struct list_head rq_entry;

 	enum ocrdma_qp_state state;	/*  QP state */
 	int cap_flags;
 	u32 max_ord, max_ird;

 	u32 id;
 	struct ocrdma_pd *pd;

 	enum ib_qp_type qp_type;

 	int sgid_idx;
 	u32 qkey;
 	bool dpp_enabled;
 	u8 *ird_q_va;
 };

 #define OCRDMA_GET_NUM_POSTED_SHIFT_VAL(qp) \
 	(((qp->dev->nic_info.dev_family == OCRDMA_GEN2_FAMILY) && \
 		(qp->id < 64)) ? 24 : 16)

 struct ocrdma_hw_mr {
 	struct ocrdma_dev *dev;
 	u32 lkey;
 	u8 fr_mr;
 	u8 remote_atomic;
 	u8 remote_rd;
 	u8 remote_wr;
 	u8 local_rd;
 	u8 local_wr;
 	u8 mw_bind;
 	u8 rsvd;
 	u64 len;
 	struct ocrdma_pbl *pbl_table;
 	u32 num_pbls;
 	u32 num_pbes;
 	u32 pbl_size;
 	u32 pbe_size;
 	u64 fbo;
 	u64 va;
 };

 struct ocrdma_mr {
 	struct ib_mr ibmr;
 	struct ib_umem *umem;
 	struct ocrdma_hw_mr hwmr;
 	struct ocrdma_pd *pd;
 };

 struct ocrdma_ucontext {
 	struct ib_ucontext ibucontext;
 	struct ocrdma_dev *dev;

 	struct list_head mm_head;
 	struct mutex mm_list_lock; /* protects list entries of mm type */
 	struct {
 		u32 *va;
 		dma_addr_t pa;
 		u32 len;
 	} ah_tbl;
 };

 struct ocrdma_mm {
 	struct {
 		u64 phy_addr;
 		unsigned long len;
 	} key;
 	struct list_head entry;
 };

 static inline struct ocrdma_dev *get_ocrdma_dev(struct ib_device *ibdev)
 {
 	return container_of(ibdev, struct ocrdma_dev, ibdev);
 }

 static inline struct ocrdma_ucontext *get_ocrdma_ucontext(struct ib_ucontext
 							  *ibucontext)
 {
 	return container_of(ibucontext, struct ocrdma_ucontext, ibucontext);
 }

 static inline struct ocrdma_pd *get_ocrdma_pd(struct ib_pd *ibpd)
 {
 	return container_of(ibpd, struct ocrdma_pd, ibpd);
 }

 static inline struct ocrdma_cq *get_ocrdma_cq(struct ib_cq *ibcq)
 {
 	return container_of(ibcq, struct ocrdma_cq, ibcq);
 }

 static inline struct ocrdma_qp *get_ocrdma_qp(struct ib_qp *ibqp)
 {
 	return container_of(ibqp, struct ocrdma_qp, ibqp);
 }

 static inline struct ocrdma_mr *get_ocrdma_mr(struct ib_mr *ibmr)
 {
 	return container_of(ibmr, struct ocrdma_mr, ibmr);
 }

 static inline struct ocrdma_ah *get_ocrdma_ah(struct ib_ah *ibah)
 {
 	return container_of(ibah, struct ocrdma_ah, ibah);
 }

 static inline struct ocrdma_srq *get_ocrdma_srq(struct ib_srq *ibsrq)
 {
 	return container_of(ibsrq, struct ocrdma_srq, ibsrq);
 }

 #endif
	/*******************************************************************
	* This file is part of the Emulex RoCE Device Driver for *
	* RoCE (RDMA over Converged Ethernet) adapters. *
	* Copyright (C) 2008-2012 Emulex. All rights reserved. *
	* EMULEX and SLI are trademarks of Emulex. *
	* www.emulex.com *
	* *
	* This program is free software; you can redistribute it and/or *
	* modify it under the terms of version 2 of the GNU General *
	* Public License as published by the Free Software Foundation. *
	* This program is distributed in the hope that it will be useful. *
	* ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
	* WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
	* FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
	* DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
	* TO BE LEGALLY INVALID. See the GNU General Public License for *
	* more details, a copy of which can be found in the file COPYING *
	* included with this package. *
	*
	* Contact Information:
	* linux-drivers@emulex.com
	*
	* Emulex
	* 3333 Susan Street
	* Costa Mesa, CA 92626
	*******************************************************************/

	#ifndef __OCRDMA_H__
	#define __OCRDMA_H__

	#include <linux/mutex.h>
	#include <linux/list.h>
	#include <linux/spinlock.h>
	#include <linux/pci.h>

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

	#include <be_roce.h>
	#include "ocrdma_sli.h"

	#define OCRDMA_ROCE_DEV_VERSION "1.0.0"
	#define OCRDMA_NODE_DESC "Emulex OneConnect RoCE HCA"

	#define ocrdma_err(format, arg...) printk(KERN_ERR format, ##arg)

	#define OCRDMA_MAX_AH 512

	#define OCRDMA_UVERBS(CMD_NAME) (1ull << IB_USER_VERBS_CMD_##CMD_NAME)

	struct ocrdma_dev_attr {
	u8 fw_ver[32];
	u32 vendor_id;
	u32 device_id;
	u16 max_pd;
	u16 max_cq;
	u16 max_cqe;
	u16 max_qp;
	u16 max_wqe;
	u16 max_rqe;
	u32 max_inline_data;
	int max_send_sge;
	int max_recv_sge;
	int max_srq_sge;
	int max_mr;
	u64 max_mr_size;
	u32 max_num_mr_pbl;
	int max_fmr;
	int max_map_per_fmr;
	int max_pages_per_frmr;
	u16 max_ord_per_qp;
	u16 max_ird_per_qp;

	int device_cap_flags;
	u8 cq_overflow_detect;
	u8 srq_supported;

	u32 wqe_size;
	u32 rqe_size;
	u32 ird_page_size;
	u8 local_ca_ack_delay;
	u8 ird;
	u8 num_ird_pages;
	};

	struct ocrdma_pbl {
	void *va;
	dma_addr_t pa;
	};

	struct ocrdma_queue_info {
	void *va;
	dma_addr_t dma;
	u32 size;
	u16 len;
	u16 entry_size; /* Size of an element in the queue */
	u16 id; /* qid, where to ring the doorbell. */
	u16 head, tail;
	bool created;
	atomic_t used; /* Number of valid elements in the queue */
	};

	struct ocrdma_eq {
	struct ocrdma_queue_info q;
	u32 vector;
	int cq_cnt;
	struct ocrdma_dev *dev;
	char irq_name[32];
	};

	struct ocrdma_mq {
	struct ocrdma_queue_info sq;
	struct ocrdma_queue_info cq;
	bool rearm_cq;
	};

	struct mqe_ctx {
	struct mutex lock; /* for serializing mailbox commands on MQ */
	wait_queue_head_t cmd_wait;
	u32 tag;
	u16 cqe_status;
	u16 ext_status;
	bool cmd_done;
	};

	struct ocrdma_dev {
	struct ib_device ibdev;
	struct ocrdma_dev_attr attr;

	struct mutex dev_lock; /* provides syncronise access to device data */
	spinlock_t flush_q_lock ____cacheline_aligned;

	struct ocrdma_cq **cq_tbl;
	struct ocrdma_qp **qp_tbl;

	struct ocrdma_eq meq;
	struct ocrdma_eq *qp_eq_tbl;
	int eq_cnt;
	u16 base_eqid;
	u16 max_eq;

	union ib_gid *sgid_tbl;
	/* provided synchronization to sgid table for
	* updating gid entries triggered by notifier.
	*/
	spinlock_t sgid_lock;

	int gsi_qp_created;
	struct ocrdma_cq *gsi_sqcq;
	struct ocrdma_cq *gsi_rqcq;

	struct {
	struct ocrdma_av *va;
	dma_addr_t pa;
	u32 size;
	u32 num_ah;
	/* provide synchronization for av
	* entry allocations.
	*/
	spinlock_t lock;
	u32 ahid;
	struct ocrdma_pbl pbl;
	} av_tbl;

	void *mbx_cmd;
	struct ocrdma_mq mq;
	struct mqe_ctx mqe_ctx;

	struct be_dev_info nic_info;

	struct list_head entry;
	struct rcu_head rcu;
	int id;
	};

	struct ocrdma_cq {
	struct ib_cq ibcq;
	struct ocrdma_dev *dev;
	struct ocrdma_cqe *va;
	u32 phase;
	u32 getp; /* pointer to pending wrs to
	* return to stack, wrap arounds
	* at max_hw_cqe
	*/
	u32 max_hw_cqe;
	bool phase_change;
	bool armed, solicited;
	bool arm_needed;

	spinlock_t cq_lock ____cacheline_aligned; /* provide synchronization
	* to cq polling
	*/
	/* syncronizes cq completion handler invoked from multiple context */
	spinlock_t comp_handler_lock ____cacheline_aligned;
	u16 id;
	u16 eqn;

	struct ocrdma_ucontext *ucontext;
	dma_addr_t pa;
	u32 len;
	atomic_t use_cnt;

	/* head of all qp's sq and rq for which cqes need to be flushed
	* by the software.
	*/
	struct list_head sq_head, rq_head;
	};

	struct ocrdma_pd {
	struct ib_pd ibpd;
	struct ocrdma_dev *dev;
	struct ocrdma_ucontext *uctx;
	atomic_t use_cnt;
	u32 id;
	int num_dpp_qp;
	u32 dpp_page;
	bool dpp_enabled;
	};

	struct ocrdma_ah {
	struct ib_ah ibah;
	struct ocrdma_dev *dev;
	struct ocrdma_av *av;
	u16 sgid_index;
	u32 id;
	};

	struct ocrdma_qp_hwq_info {
	u8 va; / virtual address */
	u32 max_sges;
	u32 head, tail;
	u32 entry_size;
	u32 max_cnt;
	u32 max_wqe_idx;
	u16 dbid; /* qid, where to ring the doorbell. */
	u32 len;
	dma_addr_t pa;
	};

	struct ocrdma_srq {
	struct ib_srq ibsrq;
	struct ocrdma_dev *dev;
	u8 __iomem *db;
	/* provide synchronization to multiple context(s) posting rqe */
	spinlock_t q_lock ____cacheline_aligned;

	struct ocrdma_qp_hwq_info rq;
	struct ocrdma_pd *pd;
	atomic_t use_cnt;
	u32 id;
	u64 *rqe_wr_id_tbl;
	u32 *idx_bit_fields;
	u32 bit_fields_len;
	};

	struct ocrdma_qp {
	struct ib_qp ibqp;
	struct ocrdma_dev *dev;

	u8 __iomem *sq_db;
	/* provide synchronization to multiple context(s) posting wqe, rqe */
	spinlock_t q_lock ____cacheline_aligned;
	struct ocrdma_qp_hwq_info sq;
	struct {
	uint64_t wrid;
	uint16_t dpp_wqe_idx;
	uint16_t dpp_wqe;
	uint8_t signaled;
	uint8_t rsvd[3];
	} *wqe_wr_id_tbl;
	u32 max_inline_data;
	struct ocrdma_cq *sq_cq;
	/* list maintained per CQ to flush SQ errors */
	struct list_head sq_entry;

	u8 __iomem *rq_db;
	struct ocrdma_qp_hwq_info rq;
	u64 *rqe_wr_id_tbl;
	struct ocrdma_cq *rq_cq;
	struct ocrdma_srq *srq;
	/* list maintained per CQ to flush RQ errors */
	struct list_head rq_entry;

	enum ocrdma_qp_state state; /* QP state */
	int cap_flags;
	u32 max_ord, max_ird;

	u32 id;
	struct ocrdma_pd *pd;

	enum ib_qp_type qp_type;

	int sgid_idx;
	u32 qkey;
	bool dpp_enabled;
	u8 *ird_q_va;
	};

	#define OCRDMA_GET_NUM_POSTED_SHIFT_VAL(qp) \
	(((qp->dev->nic_info.dev_family == OCRDMA_GEN2_FAMILY) && \
	(qp->id < 64)) ? 24 : 16)

	struct ocrdma_hw_mr {
	struct ocrdma_dev *dev;
	u32 lkey;
	u8 fr_mr;
	u8 remote_atomic;
	u8 remote_rd;
	u8 remote_wr;
	u8 local_rd;
	u8 local_wr;
	u8 mw_bind;
	u8 rsvd;
	u64 len;
	struct ocrdma_pbl *pbl_table;
	u32 num_pbls;
	u32 num_pbes;
	u32 pbl_size;
	u32 pbe_size;
	u64 fbo;
	u64 va;
	};

	struct ocrdma_mr {
	struct ib_mr ibmr;
	struct ib_umem *umem;
	struct ocrdma_hw_mr hwmr;
	struct ocrdma_pd *pd;
	};

	struct ocrdma_ucontext {
	struct ib_ucontext ibucontext;
	struct ocrdma_dev *dev;

	struct list_head mm_head;
	struct mutex mm_list_lock; /* protects list entries of mm type */
	struct {
	u32 *va;
	dma_addr_t pa;
	u32 len;
	} ah_tbl;
	};

	struct ocrdma_mm {
	struct {
	u64 phy_addr;
	unsigned long len;
	} key;
	struct list_head entry;
	};

	static inline struct ocrdma_dev get_ocrdma_dev(struct ib_device ibdev)
	{
	return container_of(ibdev, struct ocrdma_dev, ibdev);
	}

	static inline struct ocrdma_ucontext *get_ocrdma_ucontext(struct ib_ucontext
	*ibucontext)
	{
	return container_of(ibucontext, struct ocrdma_ucontext, ibucontext);
	}

	static inline struct ocrdma_pd get_ocrdma_pd(struct ib_pd ibpd)
	{
	return container_of(ibpd, struct ocrdma_pd, ibpd);
	}

	static inline struct ocrdma_cq get_ocrdma_cq(struct ib_cq ibcq)
	{
	return container_of(ibcq, struct ocrdma_cq, ibcq);
	}

	static inline struct ocrdma_qp get_ocrdma_qp(struct ib_qp ibqp)
	{
	return container_of(ibqp, struct ocrdma_qp, ibqp);
	}

	static inline struct ocrdma_mr get_ocrdma_mr(struct ib_mr ibmr)
	{
	return container_of(ibmr, struct ocrdma_mr, ibmr);
	}

	static inline struct ocrdma_ah get_ocrdma_ah(struct ib_ah ibah)
	{
	return container_of(ibah, struct ocrdma_ah, ibah);
	}

	static inline struct ocrdma_srq get_ocrdma_srq(struct ib_srq ibsrq)
	{
	return container_of(ibsrq, struct ocrdma_srq, ibsrq);
	}

	#endif