drivers/net/ethernet/qlogic/qed/qed_cxt.h

   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