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_reset() - Reset the DPSECI, returns the object to initial state
 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  *
 112  * Return:      '0' on success, error code otherwise
 113  */
 114 int dpseci_reset(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token)
 115 {
 116         struct fsl_mc_command cmd = { 0 };
 117
 118         cmd.header = mc_encode_cmd_header(DPSECI_CMDID_RESET,
 119                                           cmd_flags,
 120                                           token);
 121         return mc_send_command(mc_io, &cmd);
 122 }
 123
 124 /**
 125  * dpseci_is_enabled() - Check if the DPSECI is enabled.
 126  * @mc_io:      Pointer to MC portal's I/O object
 127  * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 128  * @token:      Token of DPSECI object
 129  * @en:         Returns '1' if object is enabled; '0' otherwise
 130  *
 131  * Return:      '0' on success, error code otherwise
 132  */
 133 int dpseci_is_enabled(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
 134                       int *en)
 135 {
 136         struct fsl_mc_command cmd = { 0 };
 137         struct dpseci_rsp_is_enabled *rsp_params;
 138         int err;
 139
 140         cmd.header = mc_encode_cmd_header(DPSECI_CMDID_IS_ENABLED,
 141                                           cmd_flags,
 142                                           token);
 143         err = mc_send_command(mc_io, &cmd);
 144         if (err)
 145                 return err;
 146
 147         rsp_params = (struct dpseci_rsp_is_enabled *)cmd.params;
 148         *en = dpseci_get_field(rsp_params->is_enabled, ENABLE);
 149
 150         return 0;
 151 }
 152
 153 /**
 154  * dpseci_get_attributes() - Retrieve DPSECI attributes
 155  * @mc_io:      Pointer to MC portal's I/O object
 156  * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 157  * @token:      Token of DPSECI object
 158  * @attr:       Returned object's attributes
 159  *
 160  * Return:      '0' on success, error code otherwise
 161  */
 162 int dpseci_get_attributes(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
 163                           struct dpseci_attr *attr)
 164 {
 165         struct fsl_mc_command cmd = { 0 };
 166         struct dpseci_rsp_get_attributes *rsp_params;
 167         int err;
 168
 169         cmd.header = mc_encode_cmd_header(DPSECI_CMDID_GET_ATTR,
 170                                           cmd_flags,
 171                                           token);
 172         err = mc_send_command(mc_io, &cmd);
 173         if (err)
 174                 return err;
 175
 176         rsp_params = (struct dpseci_rsp_get_attributes *)cmd.params;
 177         attr->id = le32_to_cpu(rsp_params->id);
 178         attr->num_tx_queues = rsp_params->num_tx_queues;
 179         attr->num_rx_queues = rsp_params->num_rx_queues;
 180         attr->options = le32_to_cpu(rsp_params->options);
 181
 182         return 0;
 183 }
 184
 185 /**
 186  * dpseci_set_rx_queue() - Set Rx queue configuration
 187  * @mc_io:      Pointer to MC portal's I/O object
 188  * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 189  * @token:      Token of DPSECI object
 190  * @queue:      Select the queue relative to number of priorities configured at
 191  *              DPSECI creation; use DPSECI_ALL_QUEUES to configure all
 192  *              Rx queues identically.
 193  * @cfg:        Rx queue configuration
 194  *
 195  * Return:      '0' on success, error code otherwise
 196  */
 197 int dpseci_set_rx_queue(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
 198                         u8 queue, const struct dpseci_rx_queue_cfg *cfg)
 199 {
 200         struct fsl_mc_command cmd = { 0 };
 201         struct dpseci_cmd_queue *cmd_params;
 202
 203         cmd.header = mc_encode_cmd_header(DPSECI_CMDID_SET_RX_QUEUE,
 204                                           cmd_flags,
 205                                           token);
 206         cmd_params = (struct dpseci_cmd_queue *)cmd.params;
 207         cmd_params->dest_id = cpu_to_le32(cfg->dest_cfg.dest_id);
 208         cmd_params->priority = cfg->dest_cfg.priority;
 209         cmd_params->queue = queue;
 210         dpseci_set_field(cmd_params->dest_type, DEST_TYPE,
 211                          cfg->dest_cfg.dest_type);
 212         cmd_params->user_ctx = cpu_to_le64(cfg->user_ctx);
 213         cmd_params->options = cpu_to_le32(cfg->options);
 214         dpseci_set_field(cmd_params->order_preservation_en, ORDER_PRESERVATION,
 215                          cfg->order_preservation_en);
 216
 217         return mc_send_command(mc_io, &cmd);
 218 }
 219
 220 /**
 221  * dpseci_get_rx_queue() - Retrieve Rx queue attributes
 222  * @mc_io:      Pointer to MC portal's I/O object
 223  * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 224  * @token:      Token of DPSECI object
 225  * @queue:      Select the queue relative to number of priorities configured at
 226  *              DPSECI creation
 227  * @attr:       Returned Rx queue attributes
 228  *
 229  * Return:      '0' on success, error code otherwise
 230  */
 231 int dpseci_get_rx_queue(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
 232                         u8 queue, struct dpseci_rx_queue_attr *attr)
 233 {
 234         struct fsl_mc_command cmd = { 0 };
 235         struct dpseci_cmd_queue *cmd_params;
 236         int err;
 237
 238         cmd.header = mc_encode_cmd_header(DPSECI_CMDID_GET_RX_QUEUE,
 239                                           cmd_flags,
 240                                           token);
 241         cmd_params = (struct dpseci_cmd_queue *)cmd.params;
 242         cmd_params->queue = queue;
 243         err = mc_send_command(mc_io, &cmd);
 244         if (err)
 245                 return err;
 246
 247         attr->dest_cfg.dest_id = le32_to_cpu(cmd_params->dest_id);
 248         attr->dest_cfg.priority = cmd_params->priority;
 249         attr->dest_cfg.dest_type = dpseci_get_field(cmd_params->dest_type,
 250                                                     DEST_TYPE);
 251         attr->user_ctx = le64_to_cpu(cmd_params->user_ctx);
 252         attr->fqid = le32_to_cpu(cmd_params->fqid);
 253         attr->order_preservation_en =
 254                 dpseci_get_field(cmd_params->order_preservation_en,
 255                                  ORDER_PRESERVATION);
 256
 257         return 0;
 258 }
 259
 260 /**
 261  * dpseci_get_tx_queue() - Retrieve Tx queue attributes
 262  * @mc_io:      Pointer to MC portal's I/O object
 263  * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 264  * @token:      Token of DPSECI object
 265  * @queue:      Select the queue relative to number of priorities configured at
 266  *              DPSECI creation
 267  * @attr:       Returned Tx queue attributes
 268  *
 269  * Return:      '0' on success, error code otherwise
 270  */
 271 int dpseci_get_tx_queue(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
 272                         u8 queue, struct dpseci_tx_queue_attr *attr)
 273 {
 274         struct fsl_mc_command cmd = { 0 };
 275         struct dpseci_cmd_queue *cmd_params;
 276         struct dpseci_rsp_get_tx_queue *rsp_params;
 277         int err;
 278
 279         cmd.header = mc_encode_cmd_header(DPSECI_CMDID_GET_TX_QUEUE,
 280                                           cmd_flags,
 281                                           token);
 282         cmd_params = (struct dpseci_cmd_queue *)cmd.params;
 283         cmd_params->queue = queue;
 284         err = mc_send_command(mc_io, &cmd);
 285         if (err)
 286                 return err;
 287
 288         rsp_params = (struct dpseci_rsp_get_tx_queue *)cmd.params;
 289         attr->fqid = le32_to_cpu(rsp_params->fqid);
 290         attr->priority = rsp_params->priority;
 291
 292         return 0;
 293 }
 294
 295 /**
 296  * dpseci_get_sec_attr() - Retrieve SEC accelerator attributes
 297  * @mc_io:      Pointer to MC portal's I/O object
 298  * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 299  * @token:      Token of DPSECI object
 300  * @attr:       Returned SEC attributes
 301  *
 302  * Return:      '0' on success, error code otherwise
 303  */
 304 int dpseci_get_sec_attr(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
 305                         struct dpseci_sec_attr *attr)
 306 {
 307         struct fsl_mc_command cmd = { 0 };
 308         struct dpseci_rsp_get_sec_attr *rsp_params;
 309         int err;
 310
 311         cmd.header = mc_encode_cmd_header(DPSECI_CMDID_GET_SEC_ATTR,
 312                                           cmd_flags,
 313                                           token);
 314         err = mc_send_command(mc_io, &cmd);
 315         if (err)
 316                 return err;
 317
 318         rsp_params = (struct dpseci_rsp_get_sec_attr *)cmd.params;
 319         attr->ip_id = le16_to_cpu(rsp_params->ip_id);
 320         attr->major_rev = rsp_params->major_rev;
 321         attr->minor_rev = rsp_params->minor_rev;
 322         attr->era = rsp_params->era;
 323         attr->deco_num = rsp_params->deco_num;
 324         attr->zuc_auth_acc_num = rsp_params->zuc_auth_acc_num;
 325         attr->zuc_enc_acc_num = rsp_params->zuc_enc_acc_num;
 326         attr->snow_f8_acc_num = rsp_params->snow_f8_acc_num;
 327         attr->snow_f9_acc_num = rsp_params->snow_f9_acc_num;
 328         attr->crc_acc_num = rsp_params->crc_acc_num;
 329         attr->pk_acc_num = rsp_params->pk_acc_num;
 330         attr->kasumi_acc_num = rsp_params->kasumi_acc_num;
 331         attr->rng_acc_num = rsp_params->rng_acc_num;
 332         attr->md_acc_num = rsp_params->md_acc_num;
 333         attr->arc4_acc_num = rsp_params->arc4_acc_num;
 334         attr->des_acc_num = rsp_params->des_acc_num;
 335         attr->aes_acc_num = rsp_params->aes_acc_num;
 336         attr->ccha_acc_num = rsp_params->ccha_acc_num;
 337         attr->ptha_acc_num = rsp_params->ptha_acc_num;
 338
 339         return 0;
 340 }
 341
 342 /**
 343  * dpseci_get_api_version() - Get Data Path SEC Interface API version
 344  * @mc_io:      Pointer to MC portal's I/O object
 345  * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 346  * @major_ver:  Major version of data path sec API
 347  * @minor_ver:  Minor version of data path sec API
 348  *
 349  * Return:      '0' on success, error code otherwise
 350  */
 351 int dpseci_get_api_version(struct fsl_mc_io *mc_io, u32 cmd_flags,
 352                            u16 *major_ver, u16 *minor_ver)
 353 {
 354         struct fsl_mc_command cmd = { 0 };
 355         struct dpseci_rsp_get_api_version *rsp_params;
 356         int err;
 357
 358         cmd.header = mc_encode_cmd_header(DPSECI_CMDID_GET_API_VERSION,
 359                                           cmd_flags, 0);
 360         err = mc_send_command(mc_io, &cmd);
 361         if (err)
 362                 return err;
 363
 364         rsp_params = (struct dpseci_rsp_get_api_version *)cmd.params;
 365         *major_ver = le16_to_cpu(rsp_params->major);
 366         *minor_ver = le16_to_cpu(rsp_params->minor);
 367
 368         return 0;
 369 }
 370
 371 /**
 372  * dpseci_set_congestion_notification() - Set congestion group
 373  *      notification configuration
 374  * @mc_io:      Pointer to MC portal's I/O object
 375  * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 376  * @token:      Token of DPSECI object
 377  * @cfg:        congestion notification configuration
 378  *
 379  * Return:      '0' on success, error code otherwise
 380  */
 381 int dpseci_set_congestion_notification(struct fsl_mc_io *mc_io, u32 cmd_flags,
 382         u16 token, const struct dpseci_congestion_notification_cfg *cfg)
 383 {
 384         struct fsl_mc_command cmd = { 0 };
 385         struct dpseci_cmd_congestion_notification *cmd_params;
 386
 387         cmd.header = mc_encode_cmd_header(
 388                         DPSECI_CMDID_SET_CONGESTION_NOTIFICATION,
 389                         cmd_flags,
 390                         token);
 391         cmd_params = (struct dpseci_cmd_congestion_notification *)cmd.params;
 392         cmd_params->dest_id = cpu_to_le32(cfg->dest_cfg.dest_id);
 393         cmd_params->notification_mode = cpu_to_le16(cfg->notification_mode);
 394         cmd_params->priority = cfg->dest_cfg.priority;
 395         dpseci_set_field(cmd_params->options, CGN_DEST_TYPE,
 396                          cfg->dest_cfg.dest_type);
 397         dpseci_set_field(cmd_params->options, CGN_UNITS, cfg->units);
 398         cmd_params->message_iova = cpu_to_le64(cfg->message_iova);
 399         cmd_params->message_ctx = cpu_to_le64(cfg->message_ctx);
 400         cmd_params->threshold_entry = cpu_to_le32(cfg->threshold_entry);
 401         cmd_params->threshold_exit = cpu_to_le32(cfg->threshold_exit);
 402
 403         return mc_send_command(mc_io, &cmd);
 404 }
 405
 406 /**
 407  * dpseci_get_congestion_notification() - Get congestion group notification
 408  *      configuration
 409  * @mc_io:      Pointer to MC portal's I/O object
 410  * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 411  * @token:      Token of DPSECI object
 412  * @cfg:        congestion notification configuration
 413  *
 414  * Return:      '0' on success, error code otherwise
 415  */
 416 int dpseci_get_congestion_notification(struct fsl_mc_io *mc_io, u32 cmd_flags,
 417         u16 token, struct dpseci_congestion_notification_cfg *cfg)
 418 {
 419         struct fsl_mc_command cmd = { 0 };
 420         struct dpseci_cmd_congestion_notification *rsp_params;
 421         int err;
 422
 423         cmd.header = mc_encode_cmd_header(
 424                         DPSECI_CMDID_GET_CONGESTION_NOTIFICATION,
 425                         cmd_flags,
 426                         token);
 427         err = mc_send_command(mc_io, &cmd);
 428         if (err)
 429                 return err;
 430
 431         rsp_params = (struct dpseci_cmd_congestion_notification *)cmd.params;
 432         cfg->dest_cfg.dest_id = le32_to_cpu(rsp_params->dest_id);
 433         cfg->notification_mode = le16_to_cpu(rsp_params->notification_mode);
 434         cfg->dest_cfg.priority = rsp_params->priority;
 435         cfg->dest_cfg.dest_type = dpseci_get_field(rsp_params->options,
 436                                                    CGN_DEST_TYPE);
 437         cfg->units = dpseci_get_field(rsp_params->options, CGN_UNITS);
 438         cfg->message_iova = le64_to_cpu(rsp_params->message_iova);
 439         cfg->message_ctx = le64_to_cpu(rsp_params->message_ctx);
 440         cfg->threshold_entry = le32_to_cpu(rsp_params->threshold_entry);
 441         cfg->threshold_exit = le32_to_cpu(rsp_params->threshold_exit);
 442
 443         return 0;
 444 }