1 /* SPDX-License-Identifier: BSD-3-Clause */ 2 /* Copyright (c) 2023, Intel Corporation 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * 3. Neither the name of the Intel Corporation nor the names of its 16 * contributors may be used to endorse or promote products derived from 17 * this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 20 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 23 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /** 33 * @file ice_rdma_internal.h 34 * @brief internal header for the RMDA driver interface setup 35 * 36 * Contains the definitions and functions used by the ice driver to setup the 37 * RDMA driver interface. Functions and definitions in this file are not 38 * shared with the RDMA client driver. 39 */ 40 #ifndef _ICE_RDMA_INTERNAL_H_ 41 #define _ICE_RDMA_INTERNAL_H_ 42 43 #include "ice_rdma.h" 44 45 /* Forward declare the softc structure */ 46 struct ice_softc; 47 48 /* Global sysctl variable indicating if the RDMA client interface is enabled */ 49 extern bool ice_enable_irdma; 50 51 /** 52 * @struct ice_rdma_entry 53 * @brief RDMA peer list node 54 * 55 * Structure used to store peer entries for each PF in a linked list. 56 */ 57 struct ice_rdma_entry { 58 LIST_ENTRY(ice_rdma_entry) node; 59 struct ice_rdma_peer peer; 60 bool attached; 61 bool initiated; 62 }; 63 64 #define ice_rdma_peer_to_entry(p) __containerof(p, struct ice_rdma_entry, peer) 65 #define ice_rdma_entry_to_sc(e) __containerof(e, struct ice_softc, rdma_entry) 66 #define ice_rdma_peer_to_sc(p) ice_rdma_entry_to_sc(ice_rdma_peer_to_entry(p)) 67 68 /** 69 * @struct ice_rdma_peers 70 * @brief Head list structure for the RDMA entry list 71 * 72 * Type defining the head of the linked list of RDMA entries. 73 */ 74 LIST_HEAD(ice_rdma_peers, ice_rdma_entry); 75 76 /** 77 * @struct ice_rdma_state 78 * @brief global driver state for RDMA 79 * 80 * Contains global state shared across all PFs by the device driver, such as 81 * the kobject class of the currently connected peer driver, and the linked 82 * list of peer entries for each PF. 83 */ 84 struct ice_rdma_state { 85 bool registered; 86 kobj_class_t peer_class; 87 struct sx mtx; 88 struct ice_rdma_peers peers; 89 }; 90 91 void ice_rdma_init(void); 92 void ice_rdma_exit(void); 93 94 int ice_rdma_pf_attach(struct ice_softc *sc); 95 void ice_rdma_pf_detach(struct ice_softc *sc); 96 int ice_rdma_pf_init(struct ice_softc *sc); 97 int ice_rdma_pf_stop(struct ice_softc *sc); 98 void ice_rdma_link_change(struct ice_softc *sc, int linkstate, uint64_t baudrate); 99 void ice_rdma_notify_dcb_qos_change(struct ice_softc *sc); 100 void ice_rdma_dcb_qos_update(struct ice_softc *sc, struct ice_port_info *pi); 101 void ice_rdma_notify_pe_intr(struct ice_softc *sc, uint32_t oicr); 102 void ice_rdma_notify_reset(struct ice_softc *sc); 103 #endif 104