348 lines
8.9 KiB
C
348 lines
8.9 KiB
C
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/*
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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_PROVIDER_H__
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#define __IWCH_PROVIDER_H__
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#include <linux/list.h>
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#include <linux/spinlock.h>
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#include <rdma/ib_verbs.h>
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#include <asm/types.h>
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#include "t3cdev.h"
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#include "iwch.h"
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#include "cxio_wr.h"
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#include "cxio_hal.h"
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struct iwch_pd {
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struct ib_pd ibpd;
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u32 pdid;
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struct iwch_dev *rhp;
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};
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static inline struct iwch_pd *to_iwch_pd(struct ib_pd *ibpd)
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{
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return container_of(ibpd, struct iwch_pd, ibpd);
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}
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struct tpt_attributes {
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u32 stag;
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u32 state:1;
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u32 type:2;
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u32 rsvd:1;
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enum tpt_mem_perm perms;
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u32 remote_invaliate_disable:1;
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u32 zbva:1;
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u32 mw_bind_enable:1;
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u32 page_size:5;
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u32 pdid;
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u32 qpid;
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u32 pbl_addr;
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u32 len;
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u64 va_fbo;
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u32 pbl_size;
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};
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struct iwch_mr {
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struct ib_mr ibmr;
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struct ib_umem *umem;
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struct iwch_dev *rhp;
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u64 kva;
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struct tpt_attributes attr;
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u64 *pages;
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u32 npages;
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};
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typedef struct iwch_mw iwch_mw_handle;
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static inline struct iwch_mr *to_iwch_mr(struct ib_mr *ibmr)
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{
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return container_of(ibmr, struct iwch_mr, ibmr);
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}
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struct iwch_mw {
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struct ib_mw ibmw;
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struct iwch_dev *rhp;
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u64 kva;
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struct tpt_attributes attr;
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};
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static inline struct iwch_mw *to_iwch_mw(struct ib_mw *ibmw)
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{
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return container_of(ibmw, struct iwch_mw, ibmw);
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}
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struct iwch_cq {
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struct ib_cq ibcq;
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struct iwch_dev *rhp;
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struct t3_cq cq;
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spinlock_t lock;
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spinlock_t comp_handler_lock;
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atomic_t refcnt;
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wait_queue_head_t wait;
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u32 __user *user_rptr_addr;
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};
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static inline struct iwch_cq *to_iwch_cq(struct ib_cq *ibcq)
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{
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return container_of(ibcq, struct iwch_cq, ibcq);
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}
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enum IWCH_QP_FLAGS {
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QP_QUIESCED = 0x01
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};
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struct iwch_mpa_attributes {
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u8 initiator;
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u8 recv_marker_enabled;
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u8 xmit_marker_enabled; /* iWARP: enable inbound Read Resp. */
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u8 crc_enabled;
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u8 version; /* 0 or 1 */
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};
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struct iwch_qp_attributes {
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u32 scq;
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u32 rcq;
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u32 sq_num_entries;
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u32 rq_num_entries;
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u32 sq_max_sges;
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u32 sq_max_sges_rdma_write;
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u32 rq_max_sges;
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u32 state;
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u8 enable_rdma_read;
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u8 enable_rdma_write; /* enable inbound Read Resp. */
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u8 enable_bind;
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u8 enable_mmid0_fastreg; /* Enable STAG0 + Fast-register */
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/*
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* Next QP state. If specify the current state, only the
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* QP attributes will be modified.
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*/
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u32 max_ord;
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u32 max_ird;
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u32 pd; /* IN */
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u32 next_state;
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char terminate_buffer[52];
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u32 terminate_msg_len;
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u8 is_terminate_local;
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struct iwch_mpa_attributes mpa_attr; /* IN-OUT */
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struct iwch_ep *llp_stream_handle;
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char *stream_msg_buf; /* Last stream msg. before Idle -> RTS */
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u32 stream_msg_buf_len; /* Only on Idle -> RTS */
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};
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struct iwch_qp {
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struct ib_qp ibqp;
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struct iwch_dev *rhp;
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struct iwch_ep *ep;
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struct iwch_qp_attributes attr;
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struct t3_wq wq;
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spinlock_t lock;
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atomic_t refcnt;
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wait_queue_head_t wait;
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enum IWCH_QP_FLAGS flags;
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struct timer_list timer;
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};
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static inline int qp_quiesced(struct iwch_qp *qhp)
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{
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return qhp->flags & QP_QUIESCED;
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}
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static inline struct iwch_qp *to_iwch_qp(struct ib_qp *ibqp)
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{
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return container_of(ibqp, struct iwch_qp, ibqp);
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}
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void iwch_qp_add_ref(struct ib_qp *qp);
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void iwch_qp_rem_ref(struct ib_qp *qp);
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struct iwch_ucontext {
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struct ib_ucontext ibucontext;
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struct cxio_ucontext uctx;
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u32 key;
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spinlock_t mmap_lock;
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struct list_head mmaps;
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};
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static inline struct iwch_ucontext *to_iwch_ucontext(struct ib_ucontext *c)
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{
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return container_of(c, struct iwch_ucontext, ibucontext);
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}
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struct iwch_mm_entry {
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struct list_head entry;
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u64 addr;
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u32 key;
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unsigned len;
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};
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static inline struct iwch_mm_entry *remove_mmap(struct iwch_ucontext *ucontext,
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u32 key, unsigned len)
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{
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struct list_head *pos, *nxt;
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struct iwch_mm_entry *mm;
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spin_lock(&ucontext->mmap_lock);
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list_for_each_safe(pos, nxt, &ucontext->mmaps) {
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mm = list_entry(pos, struct iwch_mm_entry, entry);
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if (mm->key == key && mm->len == len) {
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list_del_init(&mm->entry);
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spin_unlock(&ucontext->mmap_lock);
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PDBG("%s key 0x%x addr 0x%llx len %d\n", __func__,
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key, (unsigned long long) mm->addr, mm->len);
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return mm;
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}
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}
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spin_unlock(&ucontext->mmap_lock);
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return NULL;
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}
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static inline void insert_mmap(struct iwch_ucontext *ucontext,
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struct iwch_mm_entry *mm)
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{
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spin_lock(&ucontext->mmap_lock);
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PDBG("%s key 0x%x addr 0x%llx len %d\n", __func__,
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mm->key, (unsigned long long) mm->addr, mm->len);
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list_add_tail(&mm->entry, &ucontext->mmaps);
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spin_unlock(&ucontext->mmap_lock);
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}
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enum iwch_qp_attr_mask {
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IWCH_QP_ATTR_NEXT_STATE = 1 << 0,
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IWCH_QP_ATTR_ENABLE_RDMA_READ = 1 << 7,
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IWCH_QP_ATTR_ENABLE_RDMA_WRITE = 1 << 8,
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IWCH_QP_ATTR_ENABLE_RDMA_BIND = 1 << 9,
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IWCH_QP_ATTR_MAX_ORD = 1 << 11,
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IWCH_QP_ATTR_MAX_IRD = 1 << 12,
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IWCH_QP_ATTR_LLP_STREAM_HANDLE = 1 << 22,
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IWCH_QP_ATTR_STREAM_MSG_BUFFER = 1 << 23,
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IWCH_QP_ATTR_MPA_ATTR = 1 << 24,
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IWCH_QP_ATTR_QP_CONTEXT_ACTIVATE = 1 << 25,
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IWCH_QP_ATTR_VALID_MODIFY = (IWCH_QP_ATTR_ENABLE_RDMA_READ |
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IWCH_QP_ATTR_ENABLE_RDMA_WRITE |
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IWCH_QP_ATTR_MAX_ORD |
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IWCH_QP_ATTR_MAX_IRD |
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IWCH_QP_ATTR_LLP_STREAM_HANDLE |
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IWCH_QP_ATTR_STREAM_MSG_BUFFER |
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IWCH_QP_ATTR_MPA_ATTR |
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IWCH_QP_ATTR_QP_CONTEXT_ACTIVATE)
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};
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int iwch_modify_qp(struct iwch_dev *rhp,
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struct iwch_qp *qhp,
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enum iwch_qp_attr_mask mask,
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struct iwch_qp_attributes *attrs,
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int internal);
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enum iwch_qp_state {
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IWCH_QP_STATE_IDLE,
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IWCH_QP_STATE_RTS,
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IWCH_QP_STATE_ERROR,
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IWCH_QP_STATE_TERMINATE,
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IWCH_QP_STATE_CLOSING,
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IWCH_QP_STATE_TOT
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};
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static inline int iwch_convert_state(enum ib_qp_state ib_state)
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{
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switch (ib_state) {
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case IB_QPS_RESET:
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case IB_QPS_INIT:
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return IWCH_QP_STATE_IDLE;
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case IB_QPS_RTS:
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return IWCH_QP_STATE_RTS;
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case IB_QPS_SQD:
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return IWCH_QP_STATE_CLOSING;
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case IB_QPS_SQE:
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return IWCH_QP_STATE_TERMINATE;
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case IB_QPS_ERR:
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return IWCH_QP_STATE_ERROR;
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default:
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return -1;
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}
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}
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static inline u32 iwch_ib_to_tpt_access(int acc)
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{
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return (acc & IB_ACCESS_REMOTE_WRITE ? TPT_REMOTE_WRITE : 0) |
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(acc & IB_ACCESS_REMOTE_READ ? TPT_REMOTE_READ : 0) |
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(acc & IB_ACCESS_LOCAL_WRITE ? TPT_LOCAL_WRITE : 0) |
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(acc & IB_ACCESS_MW_BIND ? TPT_MW_BIND : 0) |
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TPT_LOCAL_READ;
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}
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static inline u32 iwch_ib_to_tpt_bind_access(int acc)
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{
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return (acc & IB_ACCESS_REMOTE_WRITE ? TPT_REMOTE_WRITE : 0) |
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(acc & IB_ACCESS_REMOTE_READ ? TPT_REMOTE_READ : 0);
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}
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enum iwch_mmid_state {
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IWCH_STAG_STATE_VALID,
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IWCH_STAG_STATE_INVALID
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};
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enum iwch_qp_query_flags {
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IWCH_QP_QUERY_CONTEXT_NONE = 0x0, /* No ctx; Only attrs */
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IWCH_QP_QUERY_CONTEXT_GET = 0x1, /* Get ctx + attrs */
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IWCH_QP_QUERY_CONTEXT_SUSPEND = 0x2, /* Not Supported */
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/*
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* Quiesce QP context; Consumer
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* will NOT replay outstanding WR
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*/
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IWCH_QP_QUERY_CONTEXT_QUIESCE = 0x4,
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IWCH_QP_QUERY_CONTEXT_REMOVE = 0x8,
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IWCH_QP_QUERY_TEST_USERWRITE = 0x32 /* Test special */
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};
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u16 iwch_rqes_posted(struct iwch_qp *qhp);
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int iwch_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
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struct ib_send_wr **bad_wr);
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int iwch_post_receive(struct ib_qp *ibqp, struct ib_recv_wr *wr,
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struct ib_recv_wr **bad_wr);
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int iwch_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
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int iwch_post_terminate(struct iwch_qp *qhp, struct respQ_msg_t *rsp_msg);
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int iwch_post_zb_read(struct iwch_ep *ep);
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int iwch_register_device(struct iwch_dev *dev);
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void iwch_unregister_device(struct iwch_dev *dev);
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void stop_read_rep_timer(struct iwch_qp *qhp);
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int iwch_register_mem(struct iwch_dev *rhp, struct iwch_pd *php,
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struct iwch_mr *mhp, int shift);
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int iwch_alloc_pbl(struct iwch_mr *mhp, int npages);
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void iwch_free_pbl(struct iwch_mr *mhp);
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int iwch_write_pbl(struct iwch_mr *mhp, __be64 *pages, int npages, int offset);
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#define IWCH_NODE_DESC "cxgb3 Chelsio Communications"
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#endif
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