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"
47 #define QED_RDMA_MAX_FMR (RDMA_MAX_TIDS)
48 #define QED_RDMA_MAX_P_KEY (1)
49 #define QED_RDMA_MAX_WQE (0x7FFF)
50 #define QED_RDMA_MAX_SRQ_WQE_ELEM (0x7FFF)
51 #define QED_RDMA_PAGE_SIZE_CAPS (0xFFFFF000)
52 #define QED_RDMA_ACK_DELAY (15)
53 #define QED_RDMA_MAX_MR_SIZE (0x10000000000ULL)
54 #define QED_RDMA_MAX_CQS (RDMA_MAX_CQS)
55 #define QED_RDMA_MAX_MRS (RDMA_MAX_TIDS)
56 /* Add 1 for header element */
57 #define QED_RDMA_MAX_SRQ_ELEM_PER_WQE (RDMA_MAX_SGE_PER_RQ_WQE + 1)
58 #define QED_RDMA_MAX_SGE_PER_SRQ_WQE (RDMA_MAX_SGE_PER_RQ_WQE)
59 #define QED_RDMA_SRQ_WQE_ELEM_SIZE (16)
60 #define QED_RDMA_MAX_SRQS (32 * 1024)
62 #define QED_RDMA_MAX_CQE_32_BIT (0x7FFFFFFF - 1)
63 #define QED_RDMA_MAX_CQE_16_BIT (0x7FFF - 1)
65 enum qed_rdma_toggle_bit {
66 QED_RDMA_TOGGLE_BIT_CLEAR = 0,
67 QED_RDMA_TOGGLE_BIT_SET = 1
71 unsigned long *bitmap;
75 struct qed_rdma_info {
76 /* spin lock to protect bitmaps */
79 struct qed_bmap cq_map;
80 struct qed_bmap pd_map;
81 struct qed_bmap tid_map;
82 struct qed_bmap qp_map;
83 struct qed_bmap srq_map;
84 struct qed_bmap cid_map;
85 struct qed_bmap dpi_map;
86 struct qed_bmap toggle_bits;
87 struct qed_rdma_events events;
88 struct qed_rdma_device *dev;
89 struct qed_rdma_port *port;
95 enum protocol_type proto;
99 struct regpair qp_handle;
100 struct regpair qp_handle_async;
103 enum qed_roce_qp_state cur_state;
106 bool fmr_and_reserved_lkey;
108 bool incoming_rdma_read_en;
109 bool incoming_rdma_write_en;
110 bool incoming_atomic_en;
111 bool e2e_flow_control_en;
118 u8 traffic_class_tos;
127 u8 min_rnr_nak_timer;
131 enum roce_mode roce_mode;
136 u8 max_rd_atomic_req;
140 dma_addr_t sq_pbl_ptr;
142 dma_addr_t orq_phys_addr;
147 u8 max_rd_atomic_resp;
151 dma_addr_t rq_pbl_ptr;
153 dma_addr_t irq_phys_addr;
157 u8 remote_mac_addr[6];
158 u8 local_mac_addr[6];
161 dma_addr_t shared_queue_phys_addr;
164 #if IS_ENABLED(CONFIG_QED_RDMA)
165 void qed_rdma_dpm_bar(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt);
166 void qed_async_roce_event(struct qed_hwfn *p_hwfn,
167 struct event_ring_entry *p_eqe);
168 void qed_ll2b_complete_tx_gsi_packet(struct qed_hwfn *p_hwfn,
169 u8 connection_handle,
171 dma_addr_t first_frag_addr,
172 bool b_last_fragment, bool b_last_packet);
173 void qed_ll2b_release_tx_gsi_packet(struct qed_hwfn *p_hwfn,
174 u8 connection_handle,
176 dma_addr_t first_frag_addr,
177 bool b_last_fragment, bool b_last_packet);
178 void qed_ll2b_complete_rx_gsi_packet(struct qed_hwfn *p_hwfn,
179 u8 connection_handle,
181 dma_addr_t rx_buf_addr,
183 u8 data_length_error,
187 u16 src_mac_addr_lo, bool b_last_packet);
189 static inline void qed_rdma_dpm_bar(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) {}
190 static inline void qed_async_roce_event(struct qed_hwfn *p_hwfn, struct event_ring_entry *p_eqe) {}
191 static inline void qed_ll2b_complete_tx_gsi_packet(struct qed_hwfn *p_hwfn,
192 u8 connection_handle,
194 dma_addr_t first_frag_addr,
195 bool b_last_fragment,
196 bool b_last_packet) {}
197 static inline void qed_ll2b_release_tx_gsi_packet(struct qed_hwfn *p_hwfn,
198 u8 connection_handle,
200 dma_addr_t first_frag_addr,
201 bool b_last_fragment,
202 bool b_last_packet) {}
203 static inline void qed_ll2b_complete_rx_gsi_packet(struct qed_hwfn *p_hwfn,
204 u8 connection_handle,
206 dma_addr_t rx_buf_addr,
208 u8 data_length_error,
213 bool b_last_packet) {}