1 /* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
2 /* QLogic qed NIC Driver
3  * Copyright (c) 2015-2017  QLogic Corporation
4  * Copyright (c) 2019-2020 Marvell International Ltd.
5  */
6 
7 #ifndef _QED_CXT_H
8 #define _QED_CXT_H
9 
10 #include <linux/types.h>
11 #include <linux/slab.h>
12 #include <linux/qed/qed_if.h>
13 #include "qed_hsi.h"
14 #include "qed.h"
15 
16 struct qed_cxt_info {
17 	void			*p_cxt;
18 	u32			iid;
19 	enum protocol_type	type;
20 };
21 
22 #define MAX_TID_BLOCKS                  512
23 struct qed_tid_mem {
24 	u32 tid_size;
25 	u32 num_tids_per_block;
26 	u32 waste;
27 	u8 *blocks[MAX_TID_BLOCKS];	/* 4K */
28 };
29 
30 /**
31  * @brief qedo_cid_get_cxt_info - Returns the context info for a specific cid
32  *
33  *
34  * @param p_hwfn
35  * @param p_info in/out
36  *
37  * @return int
38  */
39 int qed_cxt_get_cid_info(struct qed_hwfn *p_hwfn,
40 			 struct qed_cxt_info *p_info);
41 
42 /**
43  * @brief qed_cxt_get_tid_mem_info
44  *
45  * @param p_hwfn
46  * @param p_info
47  *
48  * @return int
49  */
50 int qed_cxt_get_tid_mem_info(struct qed_hwfn *p_hwfn,
51 			     struct qed_tid_mem *p_info);
52 
53 #define QED_CXT_ISCSI_TID_SEG	PROTOCOLID_ISCSI
54 #define QED_CXT_ROCE_TID_SEG	PROTOCOLID_ROCE
55 #define QED_CXT_FCOE_TID_SEG	PROTOCOLID_FCOE
56 enum qed_cxt_elem_type {
57 	QED_ELEM_CXT,
58 	QED_ELEM_SRQ,
59 	QED_ELEM_TASK,
60 	QED_ELEM_XRC_SRQ,
61 };
62 
63 u32 qed_cxt_get_proto_cid_count(struct qed_hwfn *p_hwfn,
64 				enum protocol_type type, u32 *vf_cid);
65 
66 /**
67  * @brief qed_cxt_set_pf_params - Set the PF params for cxt init
68  *
69  * @param p_hwfn
70  * @param rdma_tasks - requested maximum
71  * @return int
72  */
73 int qed_cxt_set_pf_params(struct qed_hwfn *p_hwfn, u32 rdma_tasks);
74 
75 /**
76  * @brief qed_cxt_cfg_ilt_compute - compute ILT init parameters
77  *
78  * @param p_hwfn
79  * @param last_line
80  *
81  * @return int
82  */
83 int qed_cxt_cfg_ilt_compute(struct qed_hwfn *p_hwfn, u32 *last_line);
84 
85 /**
86  * @brief qed_cxt_cfg_ilt_compute_excess - how many lines can be decreased
87  *
88  * @param p_hwfn
89  * @param used_lines
90  */
91 u32 qed_cxt_cfg_ilt_compute_excess(struct qed_hwfn *p_hwfn, u32 used_lines);
92 
93 /**
94  * @brief qed_cxt_mngr_alloc - Allocate and init the context manager struct
95  *
96  * @param p_hwfn
97  *
98  * @return int
99  */
100 int qed_cxt_mngr_alloc(struct qed_hwfn *p_hwfn);
101 
102 /**
103  * @brief qed_cxt_mngr_free
104  *
105  * @param p_hwfn
106  */
107 void qed_cxt_mngr_free(struct qed_hwfn *p_hwfn);
108 
109 /**
110  * @brief qed_cxt_tables_alloc - Allocate ILT shadow, Searcher T2, acquired map
111  *
112  * @param p_hwfn
113  *
114  * @return int
115  */
116 int qed_cxt_tables_alloc(struct qed_hwfn *p_hwfn);
117 
118 /**
119  * @brief qed_cxt_mngr_setup - Reset the acquired CIDs
120  *
121  * @param p_hwfn
122  */
123 void qed_cxt_mngr_setup(struct qed_hwfn *p_hwfn);
124 
125 /**
126  * @brief qed_cxt_hw_init_common - Initailze ILT and DQ, common phase, per path.
127  *
128  *
129  *
130  * @param p_hwfn
131  */
132 void qed_cxt_hw_init_common(struct qed_hwfn *p_hwfn);
133 
134 /**
135  * @brief qed_cxt_hw_init_pf - Initailze ILT and DQ, PF phase, per path.
136  *
137  * @param p_hwfn
138  * @param p_ptt
139  */
140 void qed_cxt_hw_init_pf(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt);
141 
142 /**
143  * @brief qed_qm_init_pf - Initailze the QM PF phase, per path
144  *
145  * @param p_hwfn
146  * @param p_ptt
147  * @param is_pf_loading
148  */
149 void qed_qm_init_pf(struct qed_hwfn *p_hwfn,
150 		    struct qed_ptt *p_ptt, bool is_pf_loading);
151 
152 /**
153  * @brief Reconfigures QM pf on the fly
154  *
155  * @param p_hwfn
156  * @param p_ptt
157  *
158  * @return int
159  */
160 int qed_qm_reconf(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt);
161 
162 #define QED_CXT_PF_CID (0xff)
163 
164 /**
165  * @brief qed_cxt_release - Release a cid
166  *
167  * @param p_hwfn
168  * @param cid
169  */
170 void qed_cxt_release_cid(struct qed_hwfn *p_hwfn, u32 cid);
171 
172 /**
173  * @brief qed_cxt_release - Release a cid belonging to a vf-queue
174  *
175  * @param p_hwfn
176  * @param cid
177  * @param vfid - engine relative index. QED_CXT_PF_CID if belongs to PF
178  */
179 void _qed_cxt_release_cid(struct qed_hwfn *p_hwfn, u32 cid, u8 vfid);
180 
181 /**
182  * @brief qed_cxt_acquire - Acquire a new cid of a specific protocol type
183  *
184  * @param p_hwfn
185  * @param type
186  * @param p_cid
187  *
188  * @return int
189  */
190 int qed_cxt_acquire_cid(struct qed_hwfn *p_hwfn,
191 			enum protocol_type type, u32 *p_cid);
192 
193 /**
194  * @brief _qed_cxt_acquire - Acquire a new cid of a specific protocol type
195  *                           for a vf-queue
196  *
197  * @param p_hwfn
198  * @param type
199  * @param p_cid
200  * @param vfid - engine relative index. QED_CXT_PF_CID if belongs to PF
201  *
202  * @return int
203  */
204 int _qed_cxt_acquire_cid(struct qed_hwfn *p_hwfn,
205 			 enum protocol_type type, u32 *p_cid, u8 vfid);
206 
207 int qed_cxt_dynamic_ilt_alloc(struct qed_hwfn *p_hwfn,
208 			      enum qed_cxt_elem_type elem_type, u32 iid);
209 u32 qed_cxt_get_proto_tid_count(struct qed_hwfn *p_hwfn,
210 				enum protocol_type type);
211 u32 qed_cxt_get_proto_cid_start(struct qed_hwfn *p_hwfn,
212 				enum protocol_type type);
213 int qed_cxt_free_proto_ilt(struct qed_hwfn *p_hwfn, enum protocol_type proto);
214 
215 #define QED_CTX_WORKING_MEM 0
216 #define QED_CTX_FL_MEM 1
217 int qed_cxt_get_task_ctx(struct qed_hwfn *p_hwfn,
218 			 u32 tid, u8 ctx_type, void **task_ctx);
219 
220 /* Max number of connection types in HW (DQ/CDU etc.) */
221 #define MAX_CONN_TYPES          PROTOCOLID_COMMON
222 #define NUM_TASK_TYPES          2
223 #define NUM_TASK_PF_SEGMENTS    4
224 #define NUM_TASK_VF_SEGMENTS    1
225 
226 /* PF per protocl configuration object */
227 #define TASK_SEGMENTS   (NUM_TASK_PF_SEGMENTS + NUM_TASK_VF_SEGMENTS)
228 #define TASK_SEGMENT_VF (NUM_TASK_PF_SEGMENTS)
229 
230 struct qed_tid_seg {
231 	u32 count;
232 	u8 type;
233 	bool has_fl_mem;
234 };
235 
236 struct qed_conn_type_cfg {
237 	u32 cid_count;
238 	u32 cids_per_vf;
239 	struct qed_tid_seg tid_seg[TASK_SEGMENTS];
240 };
241 
242 /* ILT Client configuration,
243  * Per connection type (protocol) resources (cids, tis, vf cids etc.)
244  * 1 - for connection context (CDUC) and for each task context we need two
245  * values, for regular task context and for force load memory
246  */
247 #define ILT_CLI_PF_BLOCKS       (1 + NUM_TASK_PF_SEGMENTS * 2)
248 #define ILT_CLI_VF_BLOCKS       (1 + NUM_TASK_VF_SEGMENTS * 2)
249 #define CDUC_BLK                (0)
250 #define SRQ_BLK                 (0)
251 #define CDUT_SEG_BLK(n)         (1 + (u8)(n))
252 #define CDUT_FL_SEG_BLK(n, X)   (1 + (n) + NUM_TASK_ ## X ## _SEGMENTS)
253 
254 struct ilt_cfg_pair {
255 	u32 reg;
256 	u32 val;
257 };
258 
259 struct qed_ilt_cli_blk {
260 	u32 total_size;		/* 0 means not active */
261 	u32 real_size_in_page;
262 	u32 start_line;
263 	u32 dynamic_line_offset;
264 	u32 dynamic_line_cnt;
265 };
266 
267 struct qed_ilt_client_cfg {
268 	bool active;
269 
270 	/* ILT boundaries */
271 	struct ilt_cfg_pair first;
272 	struct ilt_cfg_pair last;
273 	struct ilt_cfg_pair p_size;
274 
275 	/* ILT client blocks for PF */
276 	struct qed_ilt_cli_blk pf_blks[ILT_CLI_PF_BLOCKS];
277 	u32 pf_total_lines;
278 
279 	/* ILT client blocks for VFs */
280 	struct qed_ilt_cli_blk vf_blks[ILT_CLI_VF_BLOCKS];
281 	u32 vf_total_lines;
282 };
283 
284 struct qed_cid_acquired_map {
285 	u32		start_cid;
286 	u32		max_count;
287 	unsigned long	*cid_map;
288 };
289 
290 struct qed_src_t2 {
291 	struct phys_mem_desc *dma_mem;
292 	u32 num_pages;
293 	u64 first_free;
294 	u64 last_free;
295 };
296 
297 struct qed_cxt_mngr {
298 	/* Per protocl configuration */
299 	struct qed_conn_type_cfg	conn_cfg[MAX_CONN_TYPES];
300 
301 	/* computed ILT structure */
302 	struct qed_ilt_client_cfg	clients[MAX_ILT_CLIENTS];
303 
304 	/* Task type sizes */
305 	u32 task_type_size[NUM_TASK_TYPES];
306 
307 	/* total number of VFs for this hwfn -
308 	 * ALL VFs are symmetric in terms of HW resources
309 	 */
310 	u32 vf_count;
311 	u32 first_vf_in_pf;
312 
313 	/* Acquired CIDs */
314 	struct qed_cid_acquired_map	acquired[MAX_CONN_TYPES];
315 
316 	struct qed_cid_acquired_map
317 	acquired_vf[MAX_CONN_TYPES][MAX_NUM_VFS];
318 
319 	/* ILT  shadow table */
320 	struct phys_mem_desc *ilt_shadow;
321 	u32 ilt_shadow_size;
322 	u32 pf_start_line;
323 
324 	/* Mutex for a dynamic ILT allocation */
325 	struct mutex mutex;
326 
327 	/* SRC T2 */
328 	struct qed_src_t2 src_t2;
329 
330 	/* total number of SRQ's for this hwfn */
331 	u32 srq_count;
332 	u32 xrc_srq_count;
333 
334 	/* Maximal number of L2 steering filters */
335 	u32 arfs_count;
336 
337 	u8 task_type_id;
338 	u16 task_ctx_size;
339 	u16 conn_ctx_size;
340 };
341 
342 u16 qed_get_cdut_num_pf_init_pages(struct qed_hwfn *p_hwfn);
343 u16 qed_get_cdut_num_vf_init_pages(struct qed_hwfn *p_hwfn);
344 u16 qed_get_cdut_num_pf_work_pages(struct qed_hwfn *p_hwfn);
345 u16 qed_get_cdut_num_vf_work_pages(struct qed_hwfn *p_hwfn);
346 
347 u32 qed_cxt_get_ilt_page_size(struct qed_hwfn *p_hwfn,
348 			      enum ilt_clients ilt_client);
349 
350 u32 qed_cxt_get_total_srq_count(struct qed_hwfn *p_hwfn);
351 
352 #endif
353