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
16struct qed_cxt_info {
17	void			*p_cxt;
18	u32			iid;
19	enum protocol_type	type;
20};
21
22#define MAX_TID_BLOCKS                  512
23struct 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 */
39int 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 */
50int 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
56enum qed_cxt_elem_type {
57	QED_ELEM_CXT,
58	QED_ELEM_SRQ,
59	QED_ELEM_TASK,
60	QED_ELEM_XRC_SRQ,
61};
62
63u32 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 */
73int 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 */
83int 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 */
91u32 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 */
100int qed_cxt_mngr_alloc(struct qed_hwfn *p_hwfn);
101
102/**
103 * @brief qed_cxt_mngr_free
104 *
105 * @param p_hwfn
106 */
107void 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 */
116int 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 */
123void 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 */
132void 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 */
140void 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 */
149void 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 */
160int 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 */
170void 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 */
179void _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 */
190int 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 */
204int _qed_cxt_acquire_cid(struct qed_hwfn *p_hwfn,
205			 enum protocol_type type, u32 *p_cid, u8 vfid);
206
207int qed_cxt_dynamic_ilt_alloc(struct qed_hwfn *p_hwfn,
208			      enum qed_cxt_elem_type elem_type, u32 iid);
209u32 qed_cxt_get_proto_tid_count(struct qed_hwfn *p_hwfn,
210				enum protocol_type type);
211u32 qed_cxt_get_proto_cid_start(struct qed_hwfn *p_hwfn,
212				enum protocol_type type);
213int 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
217int 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
230struct qed_tid_seg {
231	u32 count;
232	u8 type;
233	bool has_fl_mem;
234};
235
236struct 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
254struct ilt_cfg_pair {
255	u32 reg;
256	u32 val;
257};
258
259struct 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
267struct 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
284struct qed_cid_acquired_map {
285	u32		start_cid;
286	u32		max_count;
287	unsigned long	*cid_map;
288};
289
290struct qed_src_t2 {
291	struct phys_mem_desc *dma_mem;
292	u32 num_pages;
293	u64 first_free;
294	u64 last_free;
295};
296
297struct 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
342u16 qed_get_cdut_num_pf_init_pages(struct qed_hwfn *p_hwfn);
343u16 qed_get_cdut_num_vf_init_pages(struct qed_hwfn *p_hwfn);
344u16 qed_get_cdut_num_pf_work_pages(struct qed_hwfn *p_hwfn);
345u16 qed_get_cdut_num_vf_work_pages(struct qed_hwfn *p_hwfn);
346
347u32 qed_cxt_get_ilt_page_size(struct qed_hwfn *p_hwfn,
348			      enum ilt_clients ilt_client);
349
350u32 qed_cxt_get_total_srq_count(struct qed_hwfn *p_hwfn);
351
352#endif
353