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  */
  27 int 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  */
  59 int 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  */
  77 int 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  */
  95 int 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  */
 115 int 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  */
 144 int 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  */
 179 int 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  */
 213 int 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  */
 253 int 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  */
 286 int 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  */
 333 int 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  */
 363 int 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  */
 398 int 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 }