2 * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
3 * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
34 #include <net/addrconf.h>
38 MODULE_AUTHOR("Bob Pearson, Frank Zago, John Groves, Kamal Heib");
39 MODULE_DESCRIPTION("Soft RDMA transport");
40 MODULE_LICENSE("Dual BSD/GPL");
42 /* free resources for all ports on a device */
43 static void rxe_cleanup_ports(struct rxe_dev *rxe)
45 kfree(rxe->port.pkey_tbl);
46 rxe->port.pkey_tbl = NULL;
50 /* free resources for a rxe device all objects created for this device must
53 static void rxe_cleanup(struct rxe_dev *rxe)
55 rxe_pool_cleanup(&rxe->uc_pool);
56 rxe_pool_cleanup(&rxe->pd_pool);
57 rxe_pool_cleanup(&rxe->ah_pool);
58 rxe_pool_cleanup(&rxe->srq_pool);
59 rxe_pool_cleanup(&rxe->qp_pool);
60 rxe_pool_cleanup(&rxe->cq_pool);
61 rxe_pool_cleanup(&rxe->mr_pool);
62 rxe_pool_cleanup(&rxe->mw_pool);
63 rxe_pool_cleanup(&rxe->mc_grp_pool);
64 rxe_pool_cleanup(&rxe->mc_elem_pool);
66 rxe_cleanup_ports(rxe);
68 crypto_free_shash(rxe->tfm);
71 /* called when all references have been dropped */
72 void rxe_release(struct kref *kref)
74 struct rxe_dev *rxe = container_of(kref, struct rxe_dev, ref_cnt);
77 ib_dealloc_device(&rxe->ib_dev);
80 void rxe_dev_put(struct rxe_dev *rxe)
82 kref_put(&rxe->ref_cnt, rxe_release);
84 EXPORT_SYMBOL_GPL(rxe_dev_put);
86 /* initialize rxe device parameters */
87 static int rxe_init_device_param(struct rxe_dev *rxe)
89 rxe->max_inline_data = RXE_MAX_INLINE_DATA;
91 rxe->attr.fw_ver = RXE_FW_VER;
92 rxe->attr.max_mr_size = RXE_MAX_MR_SIZE;
93 rxe->attr.page_size_cap = RXE_PAGE_SIZE_CAP;
94 rxe->attr.vendor_id = RXE_VENDOR_ID;
95 rxe->attr.vendor_part_id = RXE_VENDOR_PART_ID;
96 rxe->attr.hw_ver = RXE_HW_VER;
97 rxe->attr.max_qp = RXE_MAX_QP;
98 rxe->attr.max_qp_wr = RXE_MAX_QP_WR;
99 rxe->attr.device_cap_flags = RXE_DEVICE_CAP_FLAGS;
100 rxe->attr.max_sge = RXE_MAX_SGE;
101 rxe->attr.max_sge_rd = RXE_MAX_SGE_RD;
102 rxe->attr.max_cq = RXE_MAX_CQ;
103 rxe->attr.max_cqe = (1 << RXE_MAX_LOG_CQE) - 1;
104 rxe->attr.max_mr = RXE_MAX_MR;
105 rxe->attr.max_pd = RXE_MAX_PD;
106 rxe->attr.max_qp_rd_atom = RXE_MAX_QP_RD_ATOM;
107 rxe->attr.max_ee_rd_atom = RXE_MAX_EE_RD_ATOM;
108 rxe->attr.max_res_rd_atom = RXE_MAX_RES_RD_ATOM;
109 rxe->attr.max_qp_init_rd_atom = RXE_MAX_QP_INIT_RD_ATOM;
110 rxe->attr.max_ee_init_rd_atom = RXE_MAX_EE_INIT_RD_ATOM;
111 rxe->attr.atomic_cap = RXE_ATOMIC_CAP;
112 rxe->attr.max_ee = RXE_MAX_EE;
113 rxe->attr.max_rdd = RXE_MAX_RDD;
114 rxe->attr.max_mw = RXE_MAX_MW;
115 rxe->attr.max_raw_ipv6_qp = RXE_MAX_RAW_IPV6_QP;
116 rxe->attr.max_raw_ethy_qp = RXE_MAX_RAW_ETHY_QP;
117 rxe->attr.max_mcast_grp = RXE_MAX_MCAST_GRP;
118 rxe->attr.max_mcast_qp_attach = RXE_MAX_MCAST_QP_ATTACH;
119 rxe->attr.max_total_mcast_qp_attach = RXE_MAX_TOT_MCAST_QP_ATTACH;
120 rxe->attr.max_ah = RXE_MAX_AH;
121 rxe->attr.max_fmr = RXE_MAX_FMR;
122 rxe->attr.max_map_per_fmr = RXE_MAX_MAP_PER_FMR;
123 rxe->attr.max_srq = RXE_MAX_SRQ;
124 rxe->attr.max_srq_wr = RXE_MAX_SRQ_WR;
125 rxe->attr.max_srq_sge = RXE_MAX_SRQ_SGE;
126 rxe->attr.max_fast_reg_page_list_len = RXE_MAX_FMR_PAGE_LIST_LEN;
127 rxe->attr.max_pkeys = RXE_MAX_PKEYS;
128 rxe->attr.local_ca_ack_delay = RXE_LOCAL_CA_ACK_DELAY;
129 addrconf_addr_eui48((unsigned char *)&rxe->attr.sys_image_guid,
130 rxe->ndev->dev_addr);
132 rxe->max_ucontext = RXE_MAX_UCONTEXT;
137 /* initialize port attributes */
138 static int rxe_init_port_param(struct rxe_port *port)
140 port->attr.state = RXE_PORT_STATE;
141 port->attr.max_mtu = RXE_PORT_MAX_MTU;
142 port->attr.active_mtu = RXE_PORT_ACTIVE_MTU;
143 port->attr.gid_tbl_len = RXE_PORT_GID_TBL_LEN;
144 port->attr.port_cap_flags = RXE_PORT_PORT_CAP_FLAGS;
145 port->attr.max_msg_sz = RXE_PORT_MAX_MSG_SZ;
146 port->attr.bad_pkey_cntr = RXE_PORT_BAD_PKEY_CNTR;
147 port->attr.qkey_viol_cntr = RXE_PORT_QKEY_VIOL_CNTR;
148 port->attr.pkey_tbl_len = RXE_PORT_PKEY_TBL_LEN;
149 port->attr.lid = RXE_PORT_LID;
150 port->attr.sm_lid = RXE_PORT_SM_LID;
151 port->attr.lmc = RXE_PORT_LMC;
152 port->attr.max_vl_num = RXE_PORT_MAX_VL_NUM;
153 port->attr.sm_sl = RXE_PORT_SM_SL;
154 port->attr.subnet_timeout = RXE_PORT_SUBNET_TIMEOUT;
155 port->attr.init_type_reply = RXE_PORT_INIT_TYPE_REPLY;
156 port->attr.active_width = RXE_PORT_ACTIVE_WIDTH;
157 port->attr.active_speed = RXE_PORT_ACTIVE_SPEED;
158 port->attr.phys_state = RXE_PORT_PHYS_STATE;
160 ib_mtu_enum_to_int(RXE_PORT_ACTIVE_MTU);
161 port->subnet_prefix = cpu_to_be64(RXE_PORT_SUBNET_PREFIX);
166 /* initialize port state, note IB convention that HCA ports are always
169 static int rxe_init_ports(struct rxe_dev *rxe)
171 struct rxe_port *port = &rxe->port;
173 rxe_init_port_param(port);
175 port->pkey_tbl = kcalloc(port->attr.pkey_tbl_len,
176 sizeof(*port->pkey_tbl), GFP_KERNEL);
181 port->pkey_tbl[0] = 0xffff;
182 addrconf_addr_eui48((unsigned char *)&port->port_guid,
183 rxe->ndev->dev_addr);
185 spin_lock_init(&port->port_lock);
190 /* init pools of managed objects */
191 static int rxe_init_pools(struct rxe_dev *rxe)
195 err = rxe_pool_init(rxe, &rxe->uc_pool, RXE_TYPE_UC,
200 err = rxe_pool_init(rxe, &rxe->pd_pool, RXE_TYPE_PD,
205 err = rxe_pool_init(rxe, &rxe->ah_pool, RXE_TYPE_AH,
210 err = rxe_pool_init(rxe, &rxe->srq_pool, RXE_TYPE_SRQ,
215 err = rxe_pool_init(rxe, &rxe->qp_pool, RXE_TYPE_QP,
220 err = rxe_pool_init(rxe, &rxe->cq_pool, RXE_TYPE_CQ,
225 err = rxe_pool_init(rxe, &rxe->mr_pool, RXE_TYPE_MR,
230 err = rxe_pool_init(rxe, &rxe->mw_pool, RXE_TYPE_MW,
235 err = rxe_pool_init(rxe, &rxe->mc_grp_pool, RXE_TYPE_MC_GRP,
236 rxe->attr.max_mcast_grp);
240 err = rxe_pool_init(rxe, &rxe->mc_elem_pool, RXE_TYPE_MC_ELEM,
241 rxe->attr.max_total_mcast_qp_attach);
248 rxe_pool_cleanup(&rxe->mc_grp_pool);
250 rxe_pool_cleanup(&rxe->mw_pool);
252 rxe_pool_cleanup(&rxe->mr_pool);
254 rxe_pool_cleanup(&rxe->cq_pool);
256 rxe_pool_cleanup(&rxe->qp_pool);
258 rxe_pool_cleanup(&rxe->srq_pool);
260 rxe_pool_cleanup(&rxe->ah_pool);
262 rxe_pool_cleanup(&rxe->pd_pool);
264 rxe_pool_cleanup(&rxe->uc_pool);
269 /* initialize rxe device state */
270 static int rxe_init(struct rxe_dev *rxe)
274 /* init default device parameters */
275 rxe_init_device_param(rxe);
277 err = rxe_init_ports(rxe);
281 err = rxe_init_pools(rxe);
285 /* init pending mmap list */
286 spin_lock_init(&rxe->mmap_offset_lock);
287 spin_lock_init(&rxe->pending_lock);
288 INIT_LIST_HEAD(&rxe->pending_mmaps);
289 INIT_LIST_HEAD(&rxe->list);
291 mutex_init(&rxe->usdev_lock);
296 rxe_cleanup_ports(rxe);
301 int rxe_set_mtu(struct rxe_dev *rxe, unsigned int ndev_mtu)
303 struct rxe_port *port = &rxe->port;
306 mtu = eth_mtu_int_to_enum(ndev_mtu);
308 /* Make sure that new MTU in range */
309 mtu = mtu ? min_t(enum ib_mtu, mtu, RXE_PORT_MAX_MTU) : IB_MTU_256;
311 port->attr.active_mtu = mtu;
312 port->mtu_cap = ib_mtu_enum_to_int(mtu);
316 EXPORT_SYMBOL(rxe_set_mtu);
318 /* called by ifc layer to create new rxe device.
319 * The caller should allocate memory for rxe by calling ib_alloc_device.
321 int rxe_add(struct rxe_dev *rxe, unsigned int mtu)
325 kref_init(&rxe->ref_cnt);
331 err = rxe_set_mtu(rxe, mtu);
335 err = rxe_register_device(rxe);
345 EXPORT_SYMBOL(rxe_add);
347 /* called by the ifc layer to remove a device */
348 void rxe_remove(struct rxe_dev *rxe)
350 rxe_unregister_device(rxe);
354 EXPORT_SYMBOL(rxe_remove);
356 static int __init rxe_module_init(void)
360 /* initialize slab caches for managed objects */
361 err = rxe_cache_init();
363 pr_err("unable to init object pools\n");
367 err = rxe_net_init();
375 static void __exit rxe_module_exit(void)
381 pr_info("unloaded\n");
384 late_initcall(rxe_module_init);
385 module_exit(rxe_module_exit);