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i40iw: add files for iwarp interface
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i40iw_verbs.[ch] are to handle iwarp interface.

Changes since v2:
        Made infiniband interface changes for 4.5
        removed i40iw_reg_phys_mr() for 4.5
        made changes as made by Christoph Hellwig made for nes
        in i40iw_get_dma_mr().

Changes since v1:
        Following modification based on Christoph Hellwig's feedback
         -remove kmap() calls and moved to i40iw_cm.c.
         -cleanup some of casts

Acked-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Acked-by: Shannon Nelson <shannon.nelson@intel.com>
Signed-off-by: Faisal Latif <faisal.latif@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Faisal Latif authored and Doug Ledford committed Feb 29, 2016
1 parent 4e9042e commit d374984
Showing 3 changed files with 2,714 additions and 0 deletions.
107 changes: 107 additions & 0 deletions drivers/infiniband/hw/i40iw/i40iw_ucontext.h
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/*
* Copyright (c) 2006 - 2016 Intel Corporation. All rights reserved.
* Copyright (c) 2005 Topspin Communications. All rights reserved.
* Copyright (c) 2005 Cisco Systems. All rights reserved.
* Copyright (c) 2005 Open Grid Computing, 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.
*
*/

#ifndef I40IW_USER_CONTEXT_H
#define I40IW_USER_CONTEXT_H

#include <linux/types.h>

#define I40IW_ABI_USERSPACE_VER 4
#define I40IW_ABI_KERNEL_VER 4
struct i40iw_alloc_ucontext_req {
__u32 reserved32;
__u8 userspace_ver;
__u8 reserved8[3];
};

struct i40iw_alloc_ucontext_resp {
__u32 max_pds; /* maximum pds allowed for this user process */
__u32 max_qps; /* maximum qps allowed for this user process */
__u32 wq_size; /* size of the WQs (sq+rq) allocated to the mmaped area */
__u8 kernel_ver;
__u8 reserved[3];
};

struct i40iw_alloc_pd_resp {
__u32 pd_id;
__u8 reserved[4];
};

struct i40iw_create_cq_req {
__u64 user_cq_buffer;
__u64 user_shadow_area;
};

struct i40iw_create_qp_req {
__u64 user_wqe_buffers;
__u64 user_compl_ctx;

/* UDA QP PHB */
__u64 user_sq_phb; /* place for VA of the sq phb buff */
__u64 user_rq_phb; /* place for VA of the rq phb buff */
};

enum i40iw_memreg_type {
IW_MEMREG_TYPE_MEM = 0x0000,
IW_MEMREG_TYPE_QP = 0x0001,
IW_MEMREG_TYPE_CQ = 0x0002,
};

struct i40iw_mem_reg_req {
__u16 reg_type; /* Memory, QP or CQ */
__u16 cq_pages;
__u16 rq_pages;
__u16 sq_pages;
};

struct i40iw_create_cq_resp {
__u32 cq_id;
__u32 cq_size;
__u32 mmap_db_index;
__u32 reserved;
};

struct i40iw_create_qp_resp {
__u32 qp_id;
__u32 actual_sq_size;
__u32 actual_rq_size;
__u32 i40iw_drv_opt;
__u16 push_idx;
__u8 lsmm;
__u8 rsvd2;
};

#endif
2,434 changes: 2,434 additions & 0 deletions drivers/infiniband/hw/i40iw/i40iw_verbs.c
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173 changes: 173 additions & 0 deletions drivers/infiniband/hw/i40iw/i40iw_verbs.h
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/*******************************************************************************
*
* Copyright (c) 2015-2016 Intel Corporation. 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
* OpenFabrics.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 I40IW_VERBS_H
#define I40IW_VERBS_H

struct i40iw_ucontext {
struct ib_ucontext ibucontext;
struct i40iw_device *iwdev;
struct list_head cq_reg_mem_list;
spinlock_t cq_reg_mem_list_lock; /* memory list for cq's */
struct list_head qp_reg_mem_list;
spinlock_t qp_reg_mem_list_lock; /* memory list for qp's */
};

struct i40iw_pd {
struct ib_pd ibpd;
struct i40iw_sc_pd sc_pd;
atomic_t usecount;
};

struct i40iw_hmc_pble {
union {
u32 idx;
dma_addr_t addr;
};
};

struct i40iw_cq_mr {
struct i40iw_hmc_pble cq_pbl;
dma_addr_t shadow;
};

struct i40iw_qp_mr {
struct i40iw_hmc_pble sq_pbl;
struct i40iw_hmc_pble rq_pbl;
dma_addr_t shadow;
struct page *sq_page;
};

struct i40iw_pbl {
struct list_head list;
union {
struct i40iw_qp_mr qp_mr;
struct i40iw_cq_mr cq_mr;
};

bool pbl_allocated;
u64 user_base;
struct i40iw_pble_alloc pble_alloc;
struct i40iw_mr *iwmr;
};

#define MAX_SAVE_PAGE_ADDRS 4
struct i40iw_mr {
union {
struct ib_mr ibmr;
struct ib_mw ibmw;
struct ib_fmr ibfmr;
};
struct ib_umem *region;
u16 type;
u32 page_cnt;
u32 stag;
u64 length;
u64 pgaddrmem[MAX_SAVE_PAGE_ADDRS];
struct i40iw_pbl iwpbl;
};

struct i40iw_cq {
struct ib_cq ibcq;
struct i40iw_sc_cq sc_cq;
u16 cq_head;
u16 cq_size;
u16 cq_number;
bool user_mode;
u32 polled_completions;
u32 cq_mem_size;
struct i40iw_dma_mem kmem;
spinlock_t lock; /* for poll cq */
struct i40iw_pbl *iwpbl;
};

struct disconn_work {
struct work_struct work;
struct i40iw_qp *iwqp;
};

struct iw_cm_id;
struct ietf_mpa_frame;
struct i40iw_ud_file;

struct i40iw_qp_kmode {
struct i40iw_dma_mem dma_mem;
u64 *wrid_mem;
};

struct i40iw_qp {
struct ib_qp ibqp;
struct i40iw_sc_qp sc_qp;
struct i40iw_device *iwdev;
struct i40iw_cq *iwscq;
struct i40iw_cq *iwrcq;
struct i40iw_pd *iwpd;
struct i40iw_qp_host_ctx_info ctx_info;
struct i40iwarp_offload_info iwarp_info;
void *allocated_buffer;
atomic_t refcount;
struct iw_cm_id *cm_id;
void *cm_node;
struct ib_mr *lsmm_mr;
struct work_struct work;
enum ib_qp_state ibqp_state;
u32 iwarp_state;
u32 qp_mem_size;
u32 last_aeq;
atomic_t close_timer_started;
spinlock_t lock; /* for post work requests */
struct i40iw_qp_context *iwqp_context;
void *pbl_vbase;
dma_addr_t pbl_pbase;
struct page *page;
u8 active_conn:1;
u8 user_mode:1;
u8 hte_added:1;
u8 flush_issued:1;
u8 destroyed:1;
u8 sig_all:1;
u8 pau_mode:1;
u8 rsvd:1;
u16 term_sq_flush_code;
u16 term_rq_flush_code;
u8 hw_iwarp_state;
u8 hw_tcp_state;
struct i40iw_qp_kmode kqp;
struct i40iw_dma_mem host_ctx;
struct timer_list terminate_timer;
struct i40iw_pbl *iwpbl;
struct i40iw_dma_mem q2_ctx_mem;
struct i40iw_dma_mem ietf_mem;
};
#endif

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