1 /* QLogic qed NIC Driver
2 * Copyright (c) 2015-2016 QLogic Corporation
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and /or other materials
21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
34 #include <linux/types.h>
35 #include <linux/bitops.h>
36 #include <linux/kernel.h>
37 #include <linux/list.h>
38 #include <linux/slab.h>
39 #include <linux/spinlock.h>
40 #include <linux/qed/qed_if.h>
41 #include <linux/qed/qed_roce_if.h>
43 #include "qed_dev_api.h"
46 #define QED_RDMA_MAX_FMR (RDMA_MAX_TIDS)
47 #define QED_RDMA_MAX_P_KEY (1)
48 #define QED_RDMA_MAX_WQE (0x7FFF)
49 #define QED_RDMA_MAX_SRQ_WQE_ELEM (0x7FFF)
50 #define QED_RDMA_PAGE_SIZE_CAPS (0xFFFFF000)
51 #define QED_RDMA_ACK_DELAY (15)
52 #define QED_RDMA_MAX_MR_SIZE (0x10000000000ULL)
53 #define QED_RDMA_MAX_CQS (RDMA_MAX_CQS)
54 #define QED_RDMA_MAX_MRS (RDMA_MAX_TIDS)
55 /* Add 1 for header element */
56 #define QED_RDMA_MAX_SRQ_ELEM_PER_WQE (RDMA_MAX_SGE_PER_RQ_WQE + 1)
57 #define QED_RDMA_MAX_SGE_PER_SRQ_WQE (RDMA_MAX_SGE_PER_RQ_WQE)
58 #define QED_RDMA_SRQ_WQE_ELEM_SIZE (16)
59 #define QED_RDMA_MAX_SRQS (32 * 1024)
61 #define QED_RDMA_MAX_CQE_32_BIT (0x7FFFFFFF - 1)
62 #define QED_RDMA_MAX_CQE_16_BIT (0x7FFF - 1)
64 enum qed_rdma_toggle_bit {
65 QED_RDMA_TOGGLE_BIT_CLEAR = 0,
66 QED_RDMA_TOGGLE_BIT_SET = 1
70 unsigned long *bitmap;
74 struct qed_rdma_info {
75 /* spin lock to protect bitmaps */
78 struct qed_bmap cq_map;
79 struct qed_bmap pd_map;
80 struct qed_bmap tid_map;
81 struct qed_bmap qp_map;
82 struct qed_bmap srq_map;
83 struct qed_bmap cid_map;
84 struct qed_bmap dpi_map;
85 struct qed_bmap toggle_bits;
86 struct qed_rdma_events events;
87 struct qed_rdma_device *dev;
88 struct qed_rdma_port *port;
94 enum protocol_type proto;
97 struct qed_rdma_resize_cq_in_params {
103 u8 pbl_page_size_log;
106 struct qed_rdma_resize_cq_out_params {
111 struct qed_rdma_resize_cnq_in_params {
113 u32 pbl_page_size_log;
118 struct regpair qp_handle;
119 struct regpair qp_handle_async;
122 enum qed_roce_qp_state cur_state;
125 bool fmr_and_reserved_lkey;
127 bool incoming_rdma_read_en;
128 bool incoming_rdma_write_en;
129 bool incoming_atomic_en;
130 bool e2e_flow_control_en;
137 u8 traffic_class_tos;
146 u8 min_rnr_nak_timer;
150 enum roce_mode roce_mode;
155 u8 max_rd_atomic_req;
159 dma_addr_t sq_pbl_ptr;
161 dma_addr_t orq_phys_addr;
166 u8 max_rd_atomic_resp;
170 dma_addr_t rq_pbl_ptr;
172 dma_addr_t irq_phys_addr;
176 u8 remote_mac_addr[6];
177 u8 local_mac_addr[6];
180 dma_addr_t shared_queue_phys_addr;
184 qed_rdma_add_user(void *rdma_cxt,
185 struct qed_rdma_add_user_out_params *out_params);
186 int qed_rdma_alloc_pd(void *rdma_cxt, u16 *pd);
187 int qed_rdma_alloc_tid(void *rdma_cxt, u32 *tid);
188 int qed_rdma_deregister_tid(void *rdma_cxt, u32 tid);
189 void qed_rdma_free_tid(void *rdma_cxt, u32 tid);
190 struct qed_rdma_device *qed_rdma_query_device(void *rdma_cxt);
191 struct qed_rdma_port *qed_rdma_query_port(void *rdma_cxt);
193 qed_rdma_register_tid(void *rdma_cxt,
194 struct qed_rdma_register_tid_in_params *params);
195 void qed_rdma_remove_user(void *rdma_cxt, u16 dpi);
196 int qed_rdma_start(void *p_hwfn, struct qed_rdma_start_in_params *params);
197 int qed_rdma_stop(void *rdma_cxt);
198 u32 qed_rdma_get_sb_id(void *p_hwfn, u32 rel_sb_id);
199 u32 qed_rdma_query_cau_timer_res(void *p_hwfn);
200 void qed_rdma_cnq_prod_update(void *rdma_cxt, u8 cnq_index, u16 prod);
201 void qed_rdma_resc_free(struct qed_hwfn *p_hwfn);
202 void qed_async_roce_event(struct qed_hwfn *p_hwfn,
203 struct event_ring_entry *p_eqe);
204 int qed_rdma_destroy_qp(void *rdma_cxt, struct qed_rdma_qp *qp);
205 int qed_rdma_modify_qp(void *rdma_cxt, struct qed_rdma_qp *qp,
206 struct qed_rdma_modify_qp_in_params *params);
207 int qed_rdma_query_qp(void *rdma_cxt, struct qed_rdma_qp *qp,
208 struct qed_rdma_query_qp_out_params *out_params);
210 #if IS_ENABLED(CONFIG_INFINIBAND_QEDR)
211 void qed_rdma_dpm_bar(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt);
213 void qed_rdma_dpm_bar(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) {}