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  * qed_cxt_get_cid_info(): Returns the context info for a specific cidi.
  32  *
  33  * @p_hwfn: HW device data.
  34  * @p_info: In/out.
  35  *
  36  * Return: Int.
  37  */
  38 int qed_cxt_get_cid_info(struct qed_hwfn *p_hwfn,
  39                          struct qed_cxt_info *p_info);
  40
  41 /**
  42  * qed_cxt_get_tid_mem_info(): Returns the tid mem info.
  43  *
  44  * @p_hwfn: HW device data.
  45  * @p_info: in/out.
  46  *
  47  * Return: int.
  48  */
  49 int qed_cxt_get_tid_mem_info(struct qed_hwfn *p_hwfn,
  50                              struct qed_tid_mem *p_info);
  51
  52 #define QED_CXT_TCP_ULP_TID_SEG PROTOCOLID_TCP_ULP
  53 #define QED_CXT_ROCE_TID_SEG    PROTOCOLID_ROCE
  54 #define QED_CXT_FCOE_TID_SEG    PROTOCOLID_FCOE
  55 enum qed_cxt_elem_type {
  56         QED_ELEM_CXT,
  57         QED_ELEM_SRQ,
  58         QED_ELEM_TASK,
  59         QED_ELEM_XRC_SRQ,
  60 };
  61
  62 u32 qed_cxt_get_proto_cid_count(struct qed_hwfn *p_hwfn,
  63                                 enum protocol_type type, u32 *vf_cid);
  64
  65 /**
  66  * qed_cxt_set_pf_params(): Set the PF params for cxt init.
  67  *
  68  * @p_hwfn: HW device data.
  69  * @rdma_tasks: Requested maximum.
  70  *
  71  * Return: int.
  72  */
  73 int qed_cxt_set_pf_params(struct qed_hwfn *p_hwfn, u32 rdma_tasks);
  74
  75 /**
  76  * qed_cxt_cfg_ilt_compute(): Compute ILT init parameters.
  77  *
  78  * @p_hwfn: HW device data.
  79  * @last_line: 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  * qed_cxt_cfg_ilt_compute_excess(): How many lines can be decreased.
  87  *
  88  * @p_hwfn: HW device data.
  89  * @used_lines: Used lines.
  90  *
  91  * Return: Int.
  92  */
  93 u32 qed_cxt_cfg_ilt_compute_excess(struct qed_hwfn *p_hwfn, u32 used_lines);
  94
  95 /**
  96  * qed_cxt_mngr_alloc(): Allocate and init the context manager struct.
  97  *
  98  * @p_hwfn: HW device data.
  99  *
 100  * Return: Int.
 101  */
 102 int qed_cxt_mngr_alloc(struct qed_hwfn *p_hwfn);
 103
 104 /**
 105  * qed_cxt_mngr_free() - Context manager free.
 106  *
 107  * @p_hwfn: HW device data.
 108  *
 109  * Return: Void.
 110  */
 111 void qed_cxt_mngr_free(struct qed_hwfn *p_hwfn);
 112
 113 /**
 114  * qed_cxt_tables_alloc(): Allocate ILT shadow, Searcher T2, acquired map.
 115  *
 116  * @p_hwfn: HW device data.
 117  *
 118  * Return: Int.
 119  */
 120 int qed_cxt_tables_alloc(struct qed_hwfn *p_hwfn);
 121
 122 /**
 123  * qed_cxt_mngr_setup(): Reset the acquired CIDs.
 124  *
 125  * @p_hwfn: HW device data.
 126  */
 127 void qed_cxt_mngr_setup(struct qed_hwfn *p_hwfn);
 128
 129 /**
 130  * qed_cxt_hw_init_common(): Initailze ILT and DQ, common phase, per path.
 131  *
 132  * @p_hwfn: HW device data.
 133  *
 134  * Return: Void.
 135  */
 136 void qed_cxt_hw_init_common(struct qed_hwfn *p_hwfn);
 137
 138 /**
 139  * qed_cxt_hw_init_pf(): Initailze ILT and DQ, PF phase, per path.
 140  *
 141  * @p_hwfn: HW device data.
 142  * @p_ptt: P_ptt.
 143  *
 144  * Return: Void.
 145  */
 146 void qed_cxt_hw_init_pf(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt);
 147
 148 /**
 149  * qed_qm_init_pf(): Initailze the QM PF phase, per path.
 150  *
 151  * @p_hwfn: HW device data.
 152  * @p_ptt: P_ptt.
 153  * @is_pf_loading: Is pf pending.
 154  *
 155  * Return: Void.
 156  */
 157 void qed_qm_init_pf(struct qed_hwfn *p_hwfn,
 158                     struct qed_ptt *p_ptt, bool is_pf_loading);
 159
 160 /**
 161  * qed_qm_reconf(): Reconfigures QM pf on the fly.
 162  *
 163  * @p_hwfn: HW device data.
 164  * @p_ptt: P_ptt.
 165  *
 166  * Return: Int.
 167  */
 168 int qed_qm_reconf(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt);
 169
 170 #define QED_CXT_PF_CID (0xff)
 171
 172 /**
 173  * qed_cxt_release_cid(): Release a cid.
 174  *
 175  * @p_hwfn: HW device data.
 176  * @cid: Cid.
 177  *
 178  * Return: Void.
 179  */
 180 void qed_cxt_release_cid(struct qed_hwfn *p_hwfn, u32 cid);
 181
 182 /**
 183  * _qed_cxt_release_cid(): Release a cid belonging to a vf-queue.
 184  *
 185  * @p_hwfn: HW device data.
 186  * @cid: Cid.
 187  * @vfid: Engine relative index. QED_CXT_PF_CID if belongs to PF.
 188  *
 189  * Return: Void.
 190  */
 191 void _qed_cxt_release_cid(struct qed_hwfn *p_hwfn, u32 cid, u8 vfid);
 192
 193 /**
 194  * qed_cxt_acquire_cid(): Acquire a new cid of a specific protocol type.
 195  *
 196  * @p_hwfn: HW device data.
 197  * @type: Type.
 198  * @p_cid: Pointer cid.
 199  *
 200  * Return: Int.
 201  */
 202 int qed_cxt_acquire_cid(struct qed_hwfn *p_hwfn,
 203                         enum protocol_type type, u32 *p_cid);
 204
 205 /**
 206  * _qed_cxt_acquire_cid(): Acquire a new cid of a specific protocol type
 207  *                         for a vf-queue.
 208  *
 209  * @p_hwfn: HW device data.
 210  * @type: Type.
 211  * @p_cid: Pointer cid.
 212  * @vfid: Engine relative index. QED_CXT_PF_CID if belongs to PF.
 213  *
 214  * Return: Int.
 215  */
 216 int _qed_cxt_acquire_cid(struct qed_hwfn *p_hwfn,
 217                          enum protocol_type type, u32 *p_cid, u8 vfid);
 218
 219 int qed_cxt_dynamic_ilt_alloc(struct qed_hwfn *p_hwfn,
 220                               enum qed_cxt_elem_type elem_type, u32 iid);
 221 u32 qed_cxt_get_proto_tid_count(struct qed_hwfn *p_hwfn,
 222                                 enum protocol_type type);
 223 u32 qed_cxt_get_proto_cid_start(struct qed_hwfn *p_hwfn,
 224                                 enum protocol_type type);
 225 int qed_cxt_free_proto_ilt(struct qed_hwfn *p_hwfn, enum protocol_type proto);
 226
 227 #define QED_CTX_WORKING_MEM 0
 228 #define QED_CTX_FL_MEM 1
 229 int qed_cxt_get_task_ctx(struct qed_hwfn *p_hwfn,
 230                          u32 tid, u8 ctx_type, void **task_ctx);
 231
 232 /* Max number of connection types in HW (DQ/CDU etc.) */
 233 #define MAX_CONN_TYPES          PROTOCOLID_COMMON
 234 #define NUM_TASK_TYPES          2
 235 #define NUM_TASK_PF_SEGMENTS    4
 236 #define NUM_TASK_VF_SEGMENTS    1
 237
 238 /* PF per protocl configuration object */
 239 #define TASK_SEGMENTS   (NUM_TASK_PF_SEGMENTS + NUM_TASK_VF_SEGMENTS)
 240 #define TASK_SEGMENT_VF (NUM_TASK_PF_SEGMENTS)
 241
 242 struct qed_tid_seg {
 243         u32 count;
 244         u8 type;
 245         bool has_fl_mem;
 246 };
 247
 248 struct qed_conn_type_cfg {
 249         u32 cid_count;
 250         u32 cids_per_vf;
 251         struct qed_tid_seg tid_seg[TASK_SEGMENTS];
 252 };
 253
 254 /* ILT Client configuration,
 255  * Per connection type (protocol) resources (cids, tis, vf cids etc.)
 256  * 1 - for connection context (CDUC) and for each task context we need two
 257  * values, for regular task context and for force load memory
 258  */
 259 #define ILT_CLI_PF_BLOCKS       (1 + NUM_TASK_PF_SEGMENTS * 2)
 260 #define ILT_CLI_VF_BLOCKS       (1 + NUM_TASK_VF_SEGMENTS * 2)
 261 #define CDUC_BLK                (0)
 262 #define SRQ_BLK                 (0)
 263 #define CDUT_SEG_BLK(n)         (1 + (u8)(n))
 264 #define CDUT_FL_SEG_BLK(n, X)   (1 + (n) + NUM_TASK_ ## X ## _SEGMENTS)
 265
 266 struct ilt_cfg_pair {
 267         u32 reg;
 268         u32 val;
 269 };
 270
 271 struct qed_ilt_cli_blk {
 272         u32 total_size;         /* 0 means not active */
 273         u32 real_size_in_page;
 274         u32 start_line;
 275         u32 dynamic_line_offset;
 276         u32 dynamic_line_cnt;
 277 };
 278
 279 struct qed_ilt_client_cfg {
 280         bool active;
 281
 282         /* ILT boundaries */
 283         struct ilt_cfg_pair first;
 284         struct ilt_cfg_pair last;
 285         struct ilt_cfg_pair p_size;
 286
 287         /* ILT client blocks for PF */
 288         struct qed_ilt_cli_blk pf_blks[ILT_CLI_PF_BLOCKS];
 289         u32 pf_total_lines;
 290
 291         /* ILT client blocks for VFs */
 292         struct qed_ilt_cli_blk vf_blks[ILT_CLI_VF_BLOCKS];
 293         u32 vf_total_lines;
 294 };
 295
 296 struct qed_cid_acquired_map {
 297         u32             start_cid;
 298         u32             max_count;
 299         unsigned long   *cid_map;
 300 };
 301
 302 struct qed_src_t2 {
 303         struct phys_mem_desc *dma_mem;
 304         u32 num_pages;
 305         u64 first_free;
 306         u64 last_free;
 307 };
 308
 309 struct qed_cxt_mngr {
 310         /* Per protocl configuration */
 311         struct qed_conn_type_cfg        conn_cfg[MAX_CONN_TYPES];
 312
 313         /* computed ILT structure */
 314         struct qed_ilt_client_cfg       clients[MAX_ILT_CLIENTS];
 315
 316         /* Task type sizes */
 317         u32 task_type_size[NUM_TASK_TYPES];
 318
 319         /* total number of VFs for this hwfn -
 320          * ALL VFs are symmetric in terms of HW resources
 321          */
 322         u32 vf_count;
 323         u32 first_vf_in_pf;
 324
 325         /* Acquired CIDs */
 326         struct qed_cid_acquired_map     acquired[MAX_CONN_TYPES];
 327
 328         struct qed_cid_acquired_map
 329         acquired_vf[MAX_CONN_TYPES][MAX_NUM_VFS];
 330
 331         /* ILT  shadow table */
 332         struct phys_mem_desc *ilt_shadow;
 333         u32 ilt_shadow_size;
 334         u32 pf_start_line;
 335
 336         /* Mutex for a dynamic ILT allocation */
 337         struct mutex mutex;
 338
 339         /* SRC T2 */
 340         struct qed_src_t2 src_t2;
 341
 342         /* total number of SRQ's for this hwfn */
 343         u32 srq_count;
 344         u32 xrc_srq_count;
 345
 346         /* Maximal number of L2 steering filters */
 347         u32 arfs_count;
 348
 349         u16 iscsi_task_pages;
 350         u16 fcoe_task_pages;
 351         u16 roce_task_pages;
 352         u16 eth_task_pages;
 353         u16 task_ctx_size;
 354         u16 conn_ctx_size;
 355 };
 356
 357 u16 qed_get_cdut_num_pf_init_pages(struct qed_hwfn *p_hwfn);
 358 u16 qed_get_cdut_num_vf_init_pages(struct qed_hwfn *p_hwfn);
 359 u16 qed_get_cdut_num_pf_work_pages(struct qed_hwfn *p_hwfn);
 360 u16 qed_get_cdut_num_vf_work_pages(struct qed_hwfn *p_hwfn);
 361
 362 u32 qed_cxt_get_ilt_page_size(struct qed_hwfn *p_hwfn,
 363                               enum ilt_clients ilt_client);
 364
 365 u32 qed_cxt_get_total_srq_count(struct qed_hwfn *p_hwfn);
 366
 367 #endif