180 lines
4.5 KiB
C
Executable file
180 lines
4.5 KiB
C
Executable file
/*
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* Copyright (c) 2006 Chelsio, Inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef __IWCH_H__
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#define __IWCH_H__
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#include <linux/mutex.h>
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#include <linux/list.h>
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#include <linux/spinlock.h>
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#include <linux/idr.h>
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#include <linux/workqueue.h>
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#include <rdma/ib_verbs.h>
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#include "cxio_hal.h"
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#include "cxgb3_offload.h"
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struct iwch_pd;
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struct iwch_cq;
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struct iwch_qp;
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struct iwch_mr;
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struct iwch_rnic_attributes {
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u32 max_qps;
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u32 max_wrs; /* Max for any SQ/RQ */
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u32 max_sge_per_wr;
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u32 max_sge_per_rdma_write_wr; /* for RDMA Write WR */
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u32 max_cqs;
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u32 max_cqes_per_cq;
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u32 max_mem_regs;
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u32 max_phys_buf_entries; /* for phys buf list */
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u32 max_pds;
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/*
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* The memory page sizes supported by this RNIC.
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* Bit position i in bitmap indicates page of
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* size (4k)^i. Phys block list mode unsupported.
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*/
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u32 mem_pgsizes_bitmask;
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u64 max_mr_size;
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u8 can_resize_wq;
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/*
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* The maximum number of RDMA Reads that can be outstanding
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* per QP with this RNIC as the target.
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*/
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u32 max_rdma_reads_per_qp;
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/*
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* The maximum number of resources used for RDMA Reads
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* by this RNIC with this RNIC as the target.
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*/
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u32 max_rdma_read_resources;
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/*
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* The max depth per QP for initiation of RDMA Read
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* by this RNIC.
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*/
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u32 max_rdma_read_qp_depth;
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/*
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* The maximum depth for initiation of RDMA Read
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* operations by this RNIC on all QPs
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*/
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u32 max_rdma_read_depth;
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u8 rq_overflow_handled;
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u32 can_modify_ird;
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u32 can_modify_ord;
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u32 max_mem_windows;
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u32 stag0_value;
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u8 zbva_support;
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u8 local_invalidate_fence;
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u32 cq_overflow_detection;
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};
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struct iwch_dev {
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struct ib_device ibdev;
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struct cxio_rdev rdev;
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u32 device_cap_flags;
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struct iwch_rnic_attributes attr;
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struct idr cqidr;
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struct idr qpidr;
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struct idr mmidr;
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spinlock_t lock;
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struct list_head entry;
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struct delayed_work db_drop_task;
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};
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static inline struct iwch_dev *to_iwch_dev(struct ib_device *ibdev)
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{
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return container_of(ibdev, struct iwch_dev, ibdev);
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}
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static inline struct iwch_dev *rdev_to_iwch_dev(struct cxio_rdev *rdev)
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{
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return container_of(rdev, struct iwch_dev, rdev);
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}
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static inline int t3b_device(const struct iwch_dev *rhp)
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{
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return rhp->rdev.t3cdev_p->type == T3B;
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}
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static inline int t3a_device(const struct iwch_dev *rhp)
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{
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return rhp->rdev.t3cdev_p->type == T3A;
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}
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static inline struct iwch_cq *get_chp(struct iwch_dev *rhp, u32 cqid)
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{
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return idr_find(&rhp->cqidr, cqid);
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}
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static inline struct iwch_qp *get_qhp(struct iwch_dev *rhp, u32 qpid)
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{
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return idr_find(&rhp->qpidr, qpid);
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}
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static inline struct iwch_mr *get_mhp(struct iwch_dev *rhp, u32 mmid)
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{
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return idr_find(&rhp->mmidr, mmid);
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}
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static inline int insert_handle(struct iwch_dev *rhp, struct idr *idr,
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void *handle, u32 id)
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{
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int ret;
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idr_preload(GFP_KERNEL);
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spin_lock_irq(&rhp->lock);
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ret = idr_alloc(idr, handle, id, id + 1, GFP_NOWAIT);
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spin_unlock_irq(&rhp->lock);
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idr_preload_end();
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return ret < 0 ? ret : 0;
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}
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static inline void remove_handle(struct iwch_dev *rhp, struct idr *idr, u32 id)
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{
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spin_lock_irq(&rhp->lock);
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idr_remove(idr, id);
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spin_unlock_irq(&rhp->lock);
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}
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extern struct cxgb3_client t3c_client;
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extern cxgb3_cpl_handler_func t3c_handlers[NUM_CPL_CMDS];
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extern void iwch_ev_dispatch(struct cxio_rdev *rdev_p, struct sk_buff *skb);
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#endif
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