1 /* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */
2 /*
3  * Copyright 2018-2021 Amazon.com, Inc. or its affiliates. All rights reserved.
4  */
5 
6 #ifndef _EFA_COM_CMD_H_
7 #define _EFA_COM_CMD_H_
8 
9 #include "efa_com.h"
10 
11 #define EFA_GID_SIZE 16
12 
13 struct efa_com_create_qp_params {
14 	u64 rq_base_addr;
15 	u32 send_cq_idx;
16 	u32 recv_cq_idx;
17 	/*
18 	 * Send descriptor ring size in bytes,
19 	 * sufficient for user-provided number of WQEs and SGL size
20 	 */
21 	u32 sq_ring_size_in_bytes;
22 	/* Max number of WQEs that will be posted on send queue */
23 	u32 sq_depth;
24 	/* Recv descriptor ring size in bytes */
25 	u32 rq_ring_size_in_bytes;
26 	u32 rq_depth;
27 	u16 pd;
28 	u16 uarn;
29 	u8 qp_type;
30 };
31 
32 struct efa_com_create_qp_result {
33 	u32 qp_handle;
34 	u32 qp_num;
35 	u32 sq_db_offset;
36 	u32 rq_db_offset;
37 	u32 llq_descriptors_offset;
38 	u16 send_sub_cq_idx;
39 	u16 recv_sub_cq_idx;
40 };
41 
42 struct efa_com_modify_qp_params {
43 	u32 modify_mask;
44 	u32 qp_handle;
45 	u32 qp_state;
46 	u32 cur_qp_state;
47 	u32 qkey;
48 	u32 sq_psn;
49 	u8 sq_drained_async_notify;
50 	u8 rnr_retry;
51 };
52 
53 struct efa_com_query_qp_params {
54 	u32 qp_handle;
55 };
56 
57 struct efa_com_query_qp_result {
58 	u32 qp_state;
59 	u32 qkey;
60 	u32 sq_draining;
61 	u32 sq_psn;
62 	u8 rnr_retry;
63 };
64 
65 struct efa_com_destroy_qp_params {
66 	u32 qp_handle;
67 };
68 
69 struct efa_com_create_cq_params {
70 	/* cq physical base address in OS memory */
71 	dma_addr_t dma_addr;
72 	/* completion queue depth in # of entries */
73 	u16 cq_depth;
74 	u16 num_sub_cqs;
75 	u16 uarn;
76 	u16 eqn;
77 	u8 entry_size_in_bytes;
78 	u8 interrupt_mode_enabled : 1;
79 	u8 set_src_addr : 1;
80 };
81 
82 struct efa_com_create_cq_result {
83 	/* cq identifier */
84 	u16 cq_idx;
85 	/* actual cq depth in # of entries */
86 	u16 actual_depth;
87 	u32 db_off;
88 	bool db_valid;
89 };
90 
91 struct efa_com_destroy_cq_params {
92 	u16 cq_idx;
93 };
94 
95 struct efa_com_create_ah_params {
96 	u16 pdn;
97 	/* Destination address in network byte order */
98 	u8 dest_addr[EFA_GID_SIZE];
99 };
100 
101 struct efa_com_create_ah_result {
102 	u16 ah;
103 };
104 
105 struct efa_com_destroy_ah_params {
106 	u16 ah;
107 	u16 pdn;
108 };
109 
110 struct efa_com_get_device_attr_result {
111 	u8 addr[EFA_GID_SIZE];
112 	u64 page_size_cap;
113 	u64 max_mr_pages;
114 	u32 mtu;
115 	u32 fw_version;
116 	u32 admin_api_version;
117 	u32 device_version;
118 	u32 supported_features;
119 	u32 phys_addr_width;
120 	u32 virt_addr_width;
121 	u32 max_qp;
122 	u32 max_sq_depth; /* wqes */
123 	u32 max_rq_depth; /* wqes */
124 	u32 max_cq;
125 	u32 max_cq_depth; /* cqes */
126 	u32 inline_buf_size;
127 	u32 max_mr;
128 	u32 max_pd;
129 	u32 max_ah;
130 	u32 max_llq_size;
131 	u32 max_rdma_size;
132 	u32 device_caps;
133 	u32 max_eq;
134 	u32 max_eq_depth;
135 	u32 event_bitmask; /* EQ events bitmask */
136 	u16 sub_cqs_per_cq;
137 	u16 max_sq_sge;
138 	u16 max_rq_sge;
139 	u16 max_wr_rdma_sge;
140 	u16 max_tx_batch;
141 	u16 min_sq_depth;
142 	u8 db_bar;
143 };
144 
145 struct efa_com_get_hw_hints_result {
146 	u16 mmio_read_timeout;
147 	u16 driver_watchdog_timeout;
148 	u16 admin_completion_timeout;
149 	u16 poll_interval;
150 	u32 reserved[4];
151 };
152 
153 struct efa_com_mem_addr {
154 	u32 mem_addr_low;
155 	u32 mem_addr_high;
156 };
157 
158 /* Used at indirect mode page list chunks for chaining */
159 struct efa_com_ctrl_buff_info {
160 	/* indicates length of the buffer pointed by control_buffer_address. */
161 	u32 length;
162 	/* points to control buffer (direct or indirect) */
163 	struct efa_com_mem_addr address;
164 };
165 
166 struct efa_com_reg_mr_params {
167 	/* Memory region length, in bytes. */
168 	u64 mr_length_in_bytes;
169 	/* IO Virtual Address associated with this MR. */
170 	u64 iova;
171 	/* words 8:15: Physical Buffer List, each element is page-aligned. */
172 	union {
173 		/*
174 		 * Inline array of physical addresses of app pages
175 		 * (optimization for short region reservations)
176 		 */
177 		u64 inline_pbl_array[4];
178 		/*
179 		 * Describes the next physically contiguous chunk of indirect
180 		 * page list. A page list contains physical addresses of command
181 		 * data pages. Data pages are 4KB; page list chunks are
182 		 * variable-sized.
183 		 */
184 		struct efa_com_ctrl_buff_info pbl;
185 	} pbl;
186 	/* number of pages in PBL (redundant, could be calculated) */
187 	u32 page_num;
188 	/* Protection Domain */
189 	u16 pd;
190 	/*
191 	 * phys_page_size_shift - page size is (1 << phys_page_size_shift)
192 	 * Page size is used for building the Virtual to Physical
193 	 * address mapping
194 	 */
195 	u8 page_shift;
196 	/* see permissions field of struct efa_admin_reg_mr_cmd */
197 	u8 permissions;
198 	u8 inline_pbl;
199 	u8 indirect;
200 };
201 
202 struct efa_com_reg_mr_result {
203 	/*
204 	 * To be used in conjunction with local buffers references in SQ and
205 	 * RQ WQE
206 	 */
207 	u32 l_key;
208 	/*
209 	 * To be used in incoming RDMA semantics messages to refer to remotely
210 	 * accessed memory region
211 	 */
212 	u32 r_key;
213 };
214 
215 struct efa_com_dereg_mr_params {
216 	u32 l_key;
217 };
218 
219 struct efa_com_alloc_pd_result {
220 	u16 pdn;
221 };
222 
223 struct efa_com_dealloc_pd_params {
224 	u16 pdn;
225 };
226 
227 struct efa_com_alloc_uar_result {
228 	u16 uarn;
229 };
230 
231 struct efa_com_dealloc_uar_params {
232 	u16 uarn;
233 };
234 
235 struct efa_com_get_stats_params {
236 	/* see enum efa_admin_get_stats_type */
237 	u8 type;
238 	/* see enum efa_admin_get_stats_scope */
239 	u8 scope;
240 	u16 scope_modifier;
241 };
242 
243 struct efa_com_basic_stats {
244 	u64 tx_bytes;
245 	u64 tx_pkts;
246 	u64 rx_bytes;
247 	u64 rx_pkts;
248 	u64 rx_drops;
249 };
250 
251 struct efa_com_messages_stats {
252 	u64 send_bytes;
253 	u64 send_wrs;
254 	u64 recv_bytes;
255 	u64 recv_wrs;
256 };
257 
258 struct efa_com_rdma_read_stats {
259 	u64 read_wrs;
260 	u64 read_bytes;
261 	u64 read_wr_err;
262 	u64 read_resp_bytes;
263 };
264 
265 union efa_com_get_stats_result {
266 	struct efa_com_basic_stats basic_stats;
267 	struct efa_com_messages_stats messages_stats;
268 	struct efa_com_rdma_read_stats rdma_read_stats;
269 };
270 
271 int efa_com_create_qp(struct efa_com_dev *edev,
272 		      struct efa_com_create_qp_params *params,
273 		      struct efa_com_create_qp_result *res);
274 int efa_com_modify_qp(struct efa_com_dev *edev,
275 		      struct efa_com_modify_qp_params *params);
276 int efa_com_query_qp(struct efa_com_dev *edev,
277 		     struct efa_com_query_qp_params *params,
278 		     struct efa_com_query_qp_result *result);
279 int efa_com_destroy_qp(struct efa_com_dev *edev,
280 		       struct efa_com_destroy_qp_params *params);
281 int efa_com_create_cq(struct efa_com_dev *edev,
282 		      struct efa_com_create_cq_params *params,
283 		      struct efa_com_create_cq_result *result);
284 int efa_com_destroy_cq(struct efa_com_dev *edev,
285 		       struct efa_com_destroy_cq_params *params);
286 int efa_com_register_mr(struct efa_com_dev *edev,
287 			struct efa_com_reg_mr_params *params,
288 			struct efa_com_reg_mr_result *result);
289 int efa_com_dereg_mr(struct efa_com_dev *edev,
290 		     struct efa_com_dereg_mr_params *params);
291 int efa_com_create_ah(struct efa_com_dev *edev,
292 		      struct efa_com_create_ah_params *params,
293 		      struct efa_com_create_ah_result *result);
294 int efa_com_destroy_ah(struct efa_com_dev *edev,
295 		       struct efa_com_destroy_ah_params *params);
296 int efa_com_get_device_attr(struct efa_com_dev *edev,
297 			    struct efa_com_get_device_attr_result *result);
298 int efa_com_get_hw_hints(struct efa_com_dev *edev,
299 			 struct efa_com_get_hw_hints_result *result);
300 bool
301 efa_com_check_supported_feature_id(struct efa_com_dev *edev,
302 				   enum efa_admin_aq_feature_id feature_id);
303 int efa_com_set_feature_ex(struct efa_com_dev *edev,
304 			   struct efa_admin_set_feature_resp *set_resp,
305 			   struct efa_admin_set_feature_cmd *set_cmd,
306 			   enum efa_admin_aq_feature_id feature_id,
307 			   dma_addr_t control_buf_dma_addr,
308 			   u32 control_buff_size);
309 int efa_com_set_aenq_config(struct efa_com_dev *edev, u32 groups);
310 int efa_com_alloc_pd(struct efa_com_dev *edev,
311 		     struct efa_com_alloc_pd_result *result);
312 int efa_com_dealloc_pd(struct efa_com_dev *edev,
313 		       struct efa_com_dealloc_pd_params *params);
314 int efa_com_alloc_uar(struct efa_com_dev *edev,
315 		      struct efa_com_alloc_uar_result *result);
316 int efa_com_dealloc_uar(struct efa_com_dev *edev,
317 			struct efa_com_dealloc_uar_params *params);
318 int efa_com_get_stats(struct efa_com_dev *edev,
319 		      struct efa_com_get_stats_params *params,
320 		      union efa_com_get_stats_result *result);
321 
322 #endif /* _EFA_COM_CMD_H_ */
323