LXR linux/drivers/crypto/caam/dpseci.c

   1// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
   2/*
   3 * Copyright 2013-2016 Freescale Semiconductor Inc.
   4 * Copyright 2017-2018 NXP
   5 */
   6
   7#include <linux/fsl/mc.h>
   8#include "dpseci.h"
   9#include "dpseci_cmd.h"
  10
  11/**
  12 * dpseci_open() - Open a control session for the specified object
  13 * @mc_io:      Pointer to MC portal's I/O object
  14 * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
  15 * @dpseci_id:  DPSECI unique ID
  16 * @token:      Returned token; use in subsequent API calls
  17 *
  18 * This function can be used to open a control session for an already created
  19 * object; an object may have been declared statically in the DPL
  20 * or created dynamically.
  21 * This function returns a unique authentication token, associated with the
  22 * specific object ID and the specific MC portal; this token must be used in all
  23 * subsequent commands for this specific object.
  24 *
  25 * Return:      '0' on success, error code otherwise
  26 */
  27int dpseci_open(struct fsl_mc_io *mc_io, u32 cmd_flags, int dpseci_id,
  28                u16 *token)
  29{
  30        struct fsl_mc_command cmd = { 0 };
  31        struct dpseci_cmd_open *cmd_params;
  32        int err;
  33
  34        cmd.header = mc_encode_cmd_header(DPSECI_CMDID_OPEN,
  35                                          cmd_flags,
  36                                          0);
  37        cmd_params = (struct dpseci_cmd_open *)cmd.params;
  38        cmd_params->dpseci_id = cpu_to_le32(dpseci_id);
  39        err = mc_send_command(mc_io, &cmd);
  40        if (err)
  41                return err;
  42
  43        *token = mc_cmd_hdr_read_token(&cmd);
  44
  45        return 0;
  46}
  47
  48/**
  49 * dpseci_close() - Close the control session of the object
  50 * @mc_io:      Pointer to MC portal's I/O object
  51 * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
  52 * @token:      Token of DPSECI object
  53 *
  54 * After this function is called, no further operations are allowed on the
  55 * object without opening a new control session.
  56 *
  57 * Return:      '0' on success, error code otherwise
  58 */
  59int dpseci_close(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token)
  60{
  61        struct fsl_mc_command cmd = { 0 };
  62
  63        cmd.header = mc_encode_cmd_header(DPSECI_CMDID_CLOSE,
  64                                          cmd_flags,
  65                                          token);
  66        return mc_send_command(mc_io, &cmd);
  67}
  68
  69/**
  70 * dpseci_enable() - Enable the DPSECI, allow sending and receiving frames
  71 * @mc_io:      Pointer to MC portal's I/O object
  72 * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
  73 * @token:      Token of DPSECI object
  74 *
  75 * Return:      '0' on success, error code otherwise
  76 */
  77int dpseci_enable(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token)
  78{
  79        struct fsl_mc_command cmd = { 0 };
  80
  81        cmd.header = mc_encode_cmd_header(DPSECI_CMDID_ENABLE,
  82                                          cmd_flags,
  83                                          token);
  84        return mc_send_command(mc_io, &cmd);
  85}
  86
  87/**
  88 * dpseci_disable() - Disable the DPSECI, stop sending and receiving frames
  89 * @mc_io:      Pointer to MC portal's I/O object
  90 * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
  91 * @token:      Token of DPSECI object
  92 *
  93 * Return:      '0' on success, error code otherwise
  94 */
  95int dpseci_disable(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token)
  96{
  97        struct fsl_mc_command cmd = { 0 };
  98
  99        cmd.header = mc_encode_cmd_header(DPSECI_CMDID_DISABLE,
 100                                          cmd_flags,
 101                                          token);
 102
 103        return mc_send_command(mc_io, &cmd);
 104}
 105
 106/**
 107 * dpseci_is_enabled() - Check if the DPSECI is enabled.
 108 * @mc_io:      Pointer to MC portal's I/O object
 109 * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 110 * @token:      Token of DPSECI object
 111 * @en:         Returns '1' if object is enabled; '0' otherwise
 112 *
 113 * Return:      '0' on success, error code otherwise
 114 */
 115int dpseci_is_enabled(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
 116                      int *en)
 117{
 118        struct fsl_mc_command cmd = { 0 };
 119        struct dpseci_rsp_is_enabled *rsp_params;
 120        int err;
 121
 122        cmd.header = mc_encode_cmd_header(DPSECI_CMDID_IS_ENABLED,
 123                                          cmd_flags,
 124                                          token);
 125        err = mc_send_command(mc_io, &cmd);
 126        if (err)
 127                return err;
 128
 129        rsp_params = (struct dpseci_rsp_is_enabled *)cmd.params;
 130        *en = dpseci_get_field(rsp_params->is_enabled, ENABLE);
 131
 132        return 0;
 133}
 134
 135/**
 136 * dpseci_get_attributes() - Retrieve DPSECI attributes
 137 * @mc_io:      Pointer to MC portal's I/O object
 138 * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 139 * @token:      Token of DPSECI object
 140 * @attr:       Returned object's attributes
 141 *
 142 * Return:      '0' on success, error code otherwise
 143 */
 144int dpseci_get_attributes(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
 145                          struct dpseci_attr *attr)
 146{
 147        struct fsl_mc_command cmd = { 0 };
 148        struct dpseci_rsp_get_attributes *rsp_params;
 149        int err;
 150
 151        cmd.header = mc_encode_cmd_header(DPSECI_CMDID_GET_ATTR,
 152                                          cmd_flags,
 153                                          token);
 154        err = mc_send_command(mc_io, &cmd);
 155        if (err)
 156                return err;
 157
 158        rsp_params = (struct dpseci_rsp_get_attributes *)cmd.params;
 159        attr->id = le32_to_cpu(rsp_params->id);
 160        attr->num_tx_queues = rsp_params->num_tx_queues;
 161        attr->num_rx_queues = rsp_params->num_rx_queues;
 162        attr->options = le32_to_cpu(rsp_params->options);
 163
 164        return 0;
 165}
 166
 167/**
 168 * dpseci_set_rx_queue() - Set Rx queue configuration
 169 * @mc_io:      Pointer to MC portal's I/O object
 170 * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 171 * @token:      Token of DPSECI object
 172 * @queue:      Select the queue relative to number of priorities configured at
 173 *              DPSECI creation; use DPSECI_ALL_QUEUES to configure all
 174 *              Rx queues identically.
 175 * @cfg:        Rx queue configuration
 176 *
 177 * Return:      '0' on success, error code otherwise
 178 */
 179int dpseci_set_rx_queue(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
 180                        u8 queue, const struct dpseci_rx_queue_cfg *cfg)
 181{
 182        struct fsl_mc_command cmd = { 0 };
 183        struct dpseci_cmd_queue *cmd_params;
 184
 185        cmd.header = mc_encode_cmd_header(DPSECI_CMDID_SET_RX_QUEUE,
 186                                          cmd_flags,
 187                                          token);
 188        cmd_params = (struct dpseci_cmd_queue *)cmd.params;
 189        cmd_params->dest_id = cpu_to_le32(cfg->dest_cfg.dest_id);
 190        cmd_params->priority = cfg->dest_cfg.priority;
 191        cmd_params->queue = queue;
 192        dpseci_set_field(cmd_params->dest_type, DEST_TYPE,
 193                         cfg->dest_cfg.dest_type);
 194        cmd_params->user_ctx = cpu_to_le64(cfg->user_ctx);
 195        cmd_params->options = cpu_to_le32(cfg->options);
 196        dpseci_set_field(cmd_params->order_preservation_en, ORDER_PRESERVATION,
 197                         cfg->order_preservation_en);
 198
 199        return mc_send_command(mc_io, &cmd);
 200}
 201
 202/**
 203 * dpseci_get_rx_queue() - Retrieve Rx queue attributes
 204 * @mc_io:      Pointer to MC portal's I/O object
 205 * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 206 * @token:      Token of DPSECI object
 207 * @queue:      Select the queue relative to number of priorities configured at
 208 *              DPSECI creation
 209 * @attr:       Returned Rx queue attributes
 210 *
 211 * Return:      '0' on success, error code otherwise
 212 */
 213int dpseci_get_rx_queue(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
 214                        u8 queue, struct dpseci_rx_queue_attr *attr)
 215{
 216        struct fsl_mc_command cmd = { 0 };
 217        struct dpseci_cmd_queue *cmd_params;
 218        int err;
 219
 220        cmd.header = mc_encode_cmd_header(DPSECI_CMDID_GET_RX_QUEUE,
 221                                          cmd_flags,
 222                                          token);
 223        cmd_params = (struct dpseci_cmd_queue *)cmd.params;
 224        cmd_params->queue = queue;
 225        err = mc_send_command(mc_io, &cmd);
 226        if (err)
 227                return err;
 228
 229        attr->dest_cfg.dest_id = le32_to_cpu(cmd_params->dest_id);
 230        attr->dest_cfg.priority = cmd_params->priority;
 231        attr->dest_cfg.dest_type = dpseci_get_field(cmd_params->dest_type,
 232                                                    DEST_TYPE);
 233        attr->user_ctx = le64_to_cpu(cmd_params->user_ctx);
 234        attr->fqid = le32_to_cpu(cmd_params->fqid);
 235        attr->order_preservation_en =
 236                dpseci_get_field(cmd_params->order_preservation_en,
 237                                 ORDER_PRESERVATION);
 238
 239        return 0;
 240}
 241
 242/**
 243 * dpseci_get_tx_queue() - Retrieve Tx queue attributes
 244 * @mc_io:      Pointer to MC portal's I/O object
 245 * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 246 * @token:      Token of DPSECI object
 247 * @queue:      Select the queue relative to number of priorities configured at
 248 *              DPSECI creation
 249 * @attr:       Returned Tx queue attributes
 250 *
 251 * Return:      '0' on success, error code otherwise
 252 */
 253int dpseci_get_tx_queue(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
 254                        u8 queue, struct dpseci_tx_queue_attr *attr)
 255{
 256        struct fsl_mc_command cmd = { 0 };
 257        struct dpseci_cmd_queue *cmd_params;
 258        struct dpseci_rsp_get_tx_queue *rsp_params;
 259        int err;
 260
 261        cmd.header = mc_encode_cmd_header(DPSECI_CMDID_GET_TX_QUEUE,
 262                                          cmd_flags,
 263                                          token);
 264        cmd_params = (struct dpseci_cmd_queue *)cmd.params;
 265        cmd_params->queue = queue;
 266        err = mc_send_command(mc_io, &cmd);
 267        if (err)
 268                return err;
 269
 270        rsp_params = (struct dpseci_rsp_get_tx_queue *)cmd.params;
 271        attr->fqid = le32_to_cpu(rsp_params->fqid);
 272        attr->priority = rsp_params->priority;
 273
 274        return 0;
 275}
 276
 277/**
 278 * dpseci_get_sec_attr() - Retrieve SEC accelerator attributes
 279 * @mc_io:      Pointer to MC portal's I/O object
 280 * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 281 * @token:      Token of DPSECI object
 282 * @attr:       Returned SEC attributes
 283 *
 284 * Return:      '0' on success, error code otherwise
 285 */
 286int dpseci_get_sec_attr(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
 287                        struct dpseci_sec_attr *attr)
 288{
 289        struct fsl_mc_command cmd = { 0 };
 290        struct dpseci_rsp_get_sec_attr *rsp_params;
 291        int err;
 292
 293        cmd.header = mc_encode_cmd_header(DPSECI_CMDID_GET_SEC_ATTR,
 294                                          cmd_flags,
 295                                          token);
 296        err = mc_send_command(mc_io, &cmd);
 297        if (err)
 298                return err;
 299
 300        rsp_params = (struct dpseci_rsp_get_sec_attr *)cmd.params;
 301        attr->ip_id = le16_to_cpu(rsp_params->ip_id);
 302        attr->major_rev = rsp_params->major_rev;
 303        attr->minor_rev = rsp_params->minor_rev;
 304        attr->era = rsp_params->era;
 305        attr->deco_num = rsp_params->deco_num;
 306        attr->zuc_auth_acc_num = rsp_params->zuc_auth_acc_num;
 307        attr->zuc_enc_acc_num = rsp_params->zuc_enc_acc_num;
 308        attr->snow_f8_acc_num = rsp_params->snow_f8_acc_num;
 309        attr->snow_f9_acc_num = rsp_params->snow_f9_acc_num;
 310        attr->crc_acc_num = rsp_params->crc_acc_num;
 311        attr->pk_acc_num = rsp_params->pk_acc_num;
 312        attr->kasumi_acc_num = rsp_params->kasumi_acc_num;
 313        attr->rng_acc_num = rsp_params->rng_acc_num;
 314        attr->md_acc_num = rsp_params->md_acc_num;
 315        attr->arc4_acc_num = rsp_params->arc4_acc_num;
 316        attr->des_acc_num = rsp_params->des_acc_num;
 317        attr->aes_acc_num = rsp_params->aes_acc_num;
 318        attr->ccha_acc_num = rsp_params->ccha_acc_num;
 319        attr->ptha_acc_num = rsp_params->ptha_acc_num;
 320
 321        return 0;
 322}
 323
 324/**
 325 * dpseci_get_api_version() - Get Data Path SEC Interface API version
 326 * @mc_io:      Pointer to MC portal's I/O object
 327 * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 328 * @major_ver:  Major version of data path sec API
 329 * @minor_ver:  Minor version of data path sec API
 330 *
 331 * Return:      '0' on success, error code otherwise
 332 */
 333int dpseci_get_api_version(struct fsl_mc_io *mc_io, u32 cmd_flags,
 334                           u16 *major_ver, u16 *minor_ver)
 335{
 336        struct fsl_mc_command cmd = { 0 };
 337        struct dpseci_rsp_get_api_version *rsp_params;
 338        int err;
 339
 340        cmd.header = mc_encode_cmd_header(DPSECI_CMDID_GET_API_VERSION,
 341                                          cmd_flags, 0);
 342        err = mc_send_command(mc_io, &cmd);
 343        if (err)
 344                return err;
 345
 346        rsp_params = (struct dpseci_rsp_get_api_version *)cmd.params;
 347        *major_ver = le16_to_cpu(rsp_params->major);
 348        *minor_ver = le16_to_cpu(rsp_params->minor);
 349
 350        return 0;
 351}
 352
 353/**
 354 * dpseci_set_congestion_notification() - Set congestion group
 355 *      notification configuration
 356 * @mc_io:      Pointer to MC portal's I/O object
 357 * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 358 * @token:      Token of DPSECI object
 359 * @cfg:        congestion notification configuration
 360 *
 361 * Return:      '0' on success, error code otherwise
 362 */
 363int dpseci_set_congestion_notification(struct fsl_mc_io *mc_io, u32 cmd_flags,
 364        u16 token, const struct dpseci_congestion_notification_cfg *cfg)
 365{
 366        struct fsl_mc_command cmd = { 0 };
 367        struct dpseci_cmd_congestion_notification *cmd_params;
 368
 369        cmd.header = mc_encode_cmd_header(
 370                        DPSECI_CMDID_SET_CONGESTION_NOTIFICATION,
 371                        cmd_flags,
 372                        token);
 373        cmd_params = (struct dpseci_cmd_congestion_notification *)cmd.params;
 374        cmd_params->dest_id = cpu_to_le32(cfg->dest_cfg.dest_id);
 375        cmd_params->notification_mode = cpu_to_le16(cfg->notification_mode);
 376        cmd_params->priority = cfg->dest_cfg.priority;
 377        dpseci_set_field(cmd_params->options, CGN_DEST_TYPE,
 378                         cfg->dest_cfg.dest_type);
 379        dpseci_set_field(cmd_params->options, CGN_UNITS, cfg->units);
 380        cmd_params->message_iova = cpu_to_le64(cfg->message_iova);
 381        cmd_params->message_ctx = cpu_to_le64(cfg->message_ctx);
 382        cmd_params->threshold_entry = cpu_to_le32(cfg->threshold_entry);
 383        cmd_params->threshold_exit = cpu_to_le32(cfg->threshold_exit);
 384
 385        return mc_send_command(mc_io, &cmd);
 386}
 387
 388/**
 389 * dpseci_get_congestion_notification() - Get congestion group notification
 390 *      configuration
 391 * @mc_io:      Pointer to MC portal's I/O object
 392 * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 393 * @token:      Token of DPSECI object
 394 * @cfg:        congestion notification configuration
 395 *
 396 * Return:      '0' on success, error code otherwise
 397 */
 398int dpseci_get_congestion_notification(struct fsl_mc_io *mc_io, u32 cmd_flags,
 399        u16 token, struct dpseci_congestion_notification_cfg *cfg)
 400{
 401        struct fsl_mc_command cmd = { 0 };
 402        struct dpseci_cmd_congestion_notification *rsp_params;
 403        int err;
 404
 405        cmd.header = mc_encode_cmd_header(
 406                        DPSECI_CMDID_GET_CONGESTION_NOTIFICATION,
 407                        cmd_flags,
 408                        token);
 409        err = mc_send_command(mc_io, &cmd);
 410        if (err)
 411                return err;
 412
 413        rsp_params = (struct dpseci_cmd_congestion_notification *)cmd.params;
 414        cfg->dest_cfg.dest_id = le32_to_cpu(rsp_params->dest_id);
 415        cfg->notification_mode = le16_to_cpu(rsp_params->notification_mode);
 416        cfg->dest_cfg.priority = rsp_params->priority;
 417        cfg->dest_cfg.dest_type = dpseci_get_field(rsp_params->options,
 418                                                   CGN_DEST_TYPE);
 419        cfg->units = dpseci_get_field(rsp_params->options, CGN_UNITS);
 420        cfg->message_iova = le64_to_cpu(rsp_params->message_iova);
 421        cfg->message_ctx = le64_to_cpu(rsp_params->message_ctx);
 422        cfg->threshold_entry = le32_to_cpu(rsp_params->threshold_entry);
 423        cfg->threshold_exit = le32_to_cpu(rsp_params->threshold_exit);
 424
 425        return 0;
 426}
 427