mthca_qp.c | Explore in Territory

/*
 * Copyright (c) 2004 Topspin Communications.  All rights reserved.
 * Copyright (c) 2005 Cisco Systems. All rights reserved.
 * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
 * Copyright (c) 2004 Voltaire, Inc. 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.
 */

#include <linux/string.h>
#include <linux/slab.h>
#include <linux/sched.h>

#include <asm/io.h>

#include <rdma/ib_verbs.h>
#include <rdma/ib_cache.h>
#include <rdma/ib_pack.h>
#include <rdma/uverbs_ioctl.h>

#include "mthca_dev.h"
#include "mthca_cmd.h"
#include "mthca_memfree.h"
#include "mthca_wqe.h"

enum { … };

enum { … };

enum { … };

enum { … };

enum { … };

enum { … };

struct mthca_qp_path { … } __packed;

struct mthca_qp_context { … } __packed;

struct mthca_qp_param { … } __packed;

enum { … };

static const u8 mthca_opcode[] = …;

static int is_sqp(struct mthca_dev *dev, struct mthca_qp *qp)
{ … }

static int is_qp0(struct mthca_dev *dev, struct mthca_qp *qp)
{ … }

static void *get_recv_wqe(struct mthca_qp *qp, int n)
{ … }

static void *get_send_wqe(struct mthca_qp *qp, int n)
{ … }

static void mthca_wq_reset(struct mthca_wq *wq)
{ … }

void mthca_qp_event(struct mthca_dev *dev, u32 qpn,
		    enum ib_event_type event_type)
{ … }

static int to_mthca_state(enum ib_qp_state ib_state)
{ … }

enum { … };

static int to_mthca_st(int transport)
{ … }

static void store_attrs(struct mthca_sqp *sqp, const struct ib_qp_attr *attr,
			int attr_mask)
{ … }

static void init_port(struct mthca_dev *dev, int port)
{ … }

static __be32 get_hw_access_flags(struct mthca_qp *qp, const struct ib_qp_attr *attr,
				  int attr_mask)
{ … }

static inline enum ib_qp_state to_ib_qp_state(int mthca_state)
{ … }

static inline enum ib_mig_state to_ib_mig_state(int mthca_mig_state)
{ … }

static int to_ib_qp_access_flags(int mthca_flags)
{ … }

static void to_rdma_ah_attr(struct mthca_dev *dev,
			    struct rdma_ah_attr *ah_attr,
			    struct mthca_qp_path *path)
{ … }

int mthca_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask,
		   struct ib_qp_init_attr *qp_init_attr)
{ … }

static int mthca_path_set(struct mthca_dev *dev, const struct rdma_ah_attr *ah,
			  struct mthca_qp_path *path, u8 port)
{ … }

static int __mthca_modify_qp(struct ib_qp *ibqp,
			     const struct ib_qp_attr *attr, int attr_mask,
			     enum ib_qp_state cur_state,
			     enum ib_qp_state new_state,
			     struct ib_udata *udata)
{ … }

int mthca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask,
		    struct ib_udata *udata)
{ … }

static int mthca_max_data_size(struct mthca_dev *dev, struct mthca_qp *qp, int desc_sz)
{ … }

static inline int mthca_max_inline_data(struct mthca_pd *pd, int max_data_size)
{ … }

static void mthca_adjust_qp_caps(struct mthca_dev *dev,
				 struct mthca_pd *pd,
				 struct mthca_qp *qp)
{ … }

/*
 * Allocate and register buffer for WQEs.  qp->rq.max, sq.max,
 * rq.max_gs and sq.max_gs must all be assigned.
 * mthca_alloc_wqe_buf will calculate rq.wqe_shift and
 * sq.wqe_shift (as well as send_wqe_offset, is_direct, and
 * queue)
 */
static int mthca_alloc_wqe_buf(struct mthca_dev *dev,
			       struct mthca_pd *pd,
			       struct mthca_qp *qp,
			       struct ib_udata *udata)
{ … }

static void mthca_free_wqe_buf(struct mthca_dev *dev,
			       struct mthca_qp *qp)
{ … }

static int mthca_map_memfree(struct mthca_dev *dev,
			     struct mthca_qp *qp)
{ … }

static void mthca_unmap_memfree(struct mthca_dev *dev,
				struct mthca_qp *qp)
{ … }

static int mthca_alloc_memfree(struct mthca_dev *dev,
			       struct mthca_qp *qp)
{ … }

static void mthca_free_memfree(struct mthca_dev *dev,
			       struct mthca_qp *qp)
{ … }

static int mthca_alloc_qp_common(struct mthca_dev *dev,
				 struct mthca_pd *pd,
				 struct mthca_cq *send_cq,
				 struct mthca_cq *recv_cq,
				 enum ib_sig_type send_policy,
				 struct mthca_qp *qp,
				 struct ib_udata *udata)
{ … }

static int mthca_set_qp_size(struct mthca_dev *dev, struct ib_qp_cap *cap,
			     struct mthca_pd *pd, struct mthca_qp *qp)
{ … }

int mthca_alloc_qp(struct mthca_dev *dev,
		   struct mthca_pd *pd,
		   struct mthca_cq *send_cq,
		   struct mthca_cq *recv_cq,
		   enum ib_qp_type type,
		   enum ib_sig_type send_policy,
		   struct ib_qp_cap *cap,
		   struct mthca_qp *qp,
		   struct ib_udata *udata)
{ … }

static void mthca_lock_cqs(struct mthca_cq *send_cq, struct mthca_cq *recv_cq)
	__acquires(&send_cq->lock) __acquires(&recv_cq->lock)
{ … }

static void mthca_unlock_cqs(struct mthca_cq *send_cq, struct mthca_cq *recv_cq)
	__releases(&send_cq->lock) __releases(&recv_cq->lock)
{ … }

int mthca_alloc_sqp(struct mthca_dev *dev,
		    struct mthca_pd *pd,
		    struct mthca_cq *send_cq,
		    struct mthca_cq *recv_cq,
		    enum ib_sig_type send_policy,
		    struct ib_qp_cap *cap,
		    int qpn,
		    u32 port,
		    struct mthca_qp *qp,
		    struct ib_udata *udata)
{ … }

static inline int get_qp_refcount(struct mthca_dev *dev, struct mthca_qp *qp)
{ … }

void mthca_free_qp(struct mthca_dev *dev,
		   struct mthca_qp *qp)
{ … }

/* Create UD header for an MLX send and build a data segment for it */
static int build_mlx_header(struct mthca_dev *dev, struct mthca_qp *qp, int ind,
			    const struct ib_ud_wr *wr,
			    struct mthca_mlx_seg *mlx,
			    struct mthca_data_seg *data)
{ … }

static inline int mthca_wq_overflow(struct mthca_wq *wq, int nreq,
				    struct ib_cq *ib_cq)
{ … }

static __always_inline void set_raddr_seg(struct mthca_raddr_seg *rseg,
					  u64 remote_addr, u32 rkey)
{ … }

static __always_inline void set_atomic_seg(struct mthca_atomic_seg *aseg,
					   const struct ib_atomic_wr *wr)
{ … }

static void set_tavor_ud_seg(struct mthca_tavor_ud_seg *useg,
			     const struct ib_ud_wr *wr)
{ … }

static void set_arbel_ud_seg(struct mthca_arbel_ud_seg *useg,
			     const struct ib_ud_wr *wr)
{ … }

int mthca_tavor_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr,
			  const struct ib_send_wr **bad_wr)
{ … }

int mthca_tavor_post_receive(struct ib_qp *ibqp, const struct ib_recv_wr *wr,
			     const struct ib_recv_wr **bad_wr)
{ … }

int mthca_arbel_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr,
			  const struct ib_send_wr **bad_wr)
{ … }

int mthca_arbel_post_receive(struct ib_qp *ibqp, const struct ib_recv_wr *wr,
			     const struct ib_recv_wr **bad_wr)
{ … }

void mthca_free_err_wqe(struct mthca_dev *dev, struct mthca_qp *qp, int is_send,
			int index, int *dbd, __be32 *new_wqe)
{ … }

int mthca_init_qp_table(struct mthca_dev *dev)
{ … }

void mthca_cleanup_qp_table(struct mthca_dev *dev)
{ … }
linux/drivers/infiniband/hw/mthca/mthca_qp.c
