drivers/net/ethernet/cavium/liquidio/octeon

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This source file includes following definitions.
oct_set_config_info
octeon_init_device_list
__retrieve_octeon_config_info
__verify_octeon_config_info
oct_get_config_info
lio_get_state_string
get_oct_app_string
octeon_free_device_mem
octeon_allocate_device_mem
octeon_allocate_device
octeon_register_device
octeon_deregister_device
octeon_allocate_ioq_vector
octeon_free_ioq_vector
octeon_setup_instr_queues
octeon_setup_output_queues
octeon_set_io_queues_off
octeon_set_droq_pkt_op
octeon_init_dispatch_list
octeon_delete_dispatch_list
octeon_get_dispatch
octeon_register_dispatch_fn
octeon_core_drv_init
octeon_get_tx_qsize
octeon_get_rx_qsize
octeon_get_conf
lio_get_device
lio_pci_readq
lio_pci_writeq
octeon_mem_access_ok
octeon_wait_for_ddr_init
lio_get_device_id
lio_enable_irq
   1 /**********************************************************************
   2  * Author: Cavium, Inc.
   3  *
   4  * Contact: support@cavium.com
   5  *          Please include "LiquidIO" in the subject.
   6  *
   7  * Copyright (c) 2003-2016 Cavium, Inc.
   8  *
   9  * This file is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License, Version 2, as
  11  * published by the Free Software Foundation.
  12  *
  13  * This file is distributed in the hope that it will be useful, but
  14  * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
  15  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
  16  * NONINFRINGEMENT.  See the GNU General Public License for more details.
  17  ***********************************************************************/
  18 #include <linux/pci.h>
  19 #include <linux/netdevice.h>
  20 #include <linux/vmalloc.h>
  21 #include "liquidio_common.h"
  22 #include "octeon_droq.h"
  23 #include "octeon_iq.h"
  24 #include "response_manager.h"
  25 #include "octeon_device.h"
  26 #include "octeon_main.h"
  27 #include "octeon_network.h"
  28 #include "cn66xx_regs.h"
  29 #include "cn66xx_device.h"
  30 #include "cn23xx_pf_device.h"
  31 #include "cn23xx_vf_device.h"
  32 
  33 /** Default configuration
  34  *  for CN66XX OCTEON Models.
  35  */
  36 static struct octeon_config default_cn66xx_conf = {
  37         .card_type                              = LIO_210SV,
  38         .card_name                              = LIO_210SV_NAME,
  39 
  40         /** IQ attributes */
  41         .iq                                     = {
  42                 .max_iqs                        = CN6XXX_CFG_IO_QUEUES,
  43                 .pending_list_size              =
  44                         (CN6XXX_MAX_IQ_DESCRIPTORS * CN6XXX_CFG_IO_QUEUES),
  45                 .instr_type                     = OCTEON_64BYTE_INSTR,
  46                 .db_min                         = CN6XXX_DB_MIN,
  47                 .db_timeout                     = CN6XXX_DB_TIMEOUT,
  48         }
  49         ,
  50 
  51         /** OQ attributes */
  52         .oq                                     = {
  53                 .max_oqs                        = CN6XXX_CFG_IO_QUEUES,
  54                 .refill_threshold               = CN6XXX_OQ_REFIL_THRESHOLD,
  55                 .oq_intr_pkt                    = CN6XXX_OQ_INTR_PKT,
  56                 .oq_intr_time                   = CN6XXX_OQ_INTR_TIME,
  57                 .pkts_per_intr                  = CN6XXX_OQ_PKTSPER_INTR,
  58         }
  59         ,
  60 
  61         .num_nic_ports                          = DEFAULT_NUM_NIC_PORTS_66XX,
  62         .num_def_rx_descs                       = CN6XXX_MAX_OQ_DESCRIPTORS,
  63         .num_def_tx_descs                       = CN6XXX_MAX_IQ_DESCRIPTORS,
  64         .def_rx_buf_size                        = CN6XXX_OQ_BUF_SIZE,
  65 
  66         /* For ethernet interface 0:  Port cfg Attributes */
  67         .nic_if_cfg[0] = {
  68                 /* Max Txqs: Half for each of the two ports :max_iq/2 */
  69                 .max_txqs                       = MAX_TXQS_PER_INTF,
  70 
  71                 /* Actual configured value. Range could be: 1...max_txqs */
  72                 .num_txqs                       = DEF_TXQS_PER_INTF,
  73 
  74                 /* Max Rxqs: Half for each of the two ports :max_oq/2  */
  75                 .max_rxqs                       = MAX_RXQS_PER_INTF,
  76 
  77                 /* Actual configured value. Range could be: 1...max_rxqs */
  78                 .num_rxqs                       = DEF_RXQS_PER_INTF,
  79 
  80                 /* Num of desc for rx rings */
  81                 .num_rx_descs                   = CN6XXX_MAX_OQ_DESCRIPTORS,
  82 
  83                 /* Num of desc for tx rings */
  84                 .num_tx_descs                   = CN6XXX_MAX_IQ_DESCRIPTORS,
  85 
  86                 /* SKB size, We need not change buf size even for Jumbo frames.
  87                  * Octeon can send jumbo frames in 4 consecutive descriptors,
  88                  */
  89                 .rx_buf_size                    = CN6XXX_OQ_BUF_SIZE,
  90 
  91                 .base_queue                     = BASE_QUEUE_NOT_REQUESTED,
  92 
  93                 .gmx_port_id                    = 0,
  94         },
  95 
  96         .nic_if_cfg[1] = {
  97                 /* Max Txqs: Half for each of the two ports :max_iq/2 */
  98                 .max_txqs                       = MAX_TXQS_PER_INTF,
  99 
 100                 /* Actual configured value. Range could be: 1...max_txqs */
 101                 .num_txqs                       = DEF_TXQS_PER_INTF,
 102 
 103                 /* Max Rxqs: Half for each of the two ports :max_oq/2  */
 104                 .max_rxqs                       = MAX_RXQS_PER_INTF,
 105 
 106                 /* Actual configured value. Range could be: 1...max_rxqs */
 107                 .num_rxqs                       = DEF_RXQS_PER_INTF,
 108 
 109                 /* Num of desc for rx rings */
 110                 .num_rx_descs                   = CN6XXX_MAX_OQ_DESCRIPTORS,
 111 
 112                 /* Num of desc for tx rings */
 113                 .num_tx_descs                   = CN6XXX_MAX_IQ_DESCRIPTORS,
 114 
 115                 /* SKB size, We need not change buf size even for Jumbo frames.
 116                  * Octeon can send jumbo frames in 4 consecutive descriptors,
 117                  */
 118                 .rx_buf_size                    = CN6XXX_OQ_BUF_SIZE,
 119 
 120                 .base_queue                     = BASE_QUEUE_NOT_REQUESTED,
 121 
 122                 .gmx_port_id                    = 1,
 123         },
 124 
 125         /** Miscellaneous attributes */
 126         .misc                                   = {
 127                 /* Host driver link query interval */
 128                 .oct_link_query_interval        = 100,
 129 
 130                 /* Octeon link query interval */
 131                 .host_link_query_interval       = 500,
 132 
 133                 .enable_sli_oq_bp               = 0,
 134 
 135                 /* Control queue group */
 136                 .ctrlq_grp                      = 1,
 137         }
 138         ,
 139 };
 140 
 141 /** Default configuration
 142  *  for CN68XX OCTEON Model.
 143  */
 144 
 145 static struct octeon_config default_cn68xx_conf = {
 146         .card_type                              = LIO_410NV,
 147         .card_name                              = LIO_410NV_NAME,
 148 
 149         /** IQ attributes */
 150         .iq                                     = {
 151                 .max_iqs                        = CN6XXX_CFG_IO_QUEUES,
 152                 .pending_list_size              =
 153                         (CN6XXX_MAX_IQ_DESCRIPTORS * CN6XXX_CFG_IO_QUEUES),
 154                 .instr_type                     = OCTEON_64BYTE_INSTR,
 155                 .db_min                         = CN6XXX_DB_MIN,
 156                 .db_timeout                     = CN6XXX_DB_TIMEOUT,
 157         }
 158         ,
 159 
 160         /** OQ attributes */
 161         .oq                                     = {
 162                 .max_oqs                        = CN6XXX_CFG_IO_QUEUES,
 163                 .refill_threshold               = CN6XXX_OQ_REFIL_THRESHOLD,
 164                 .oq_intr_pkt                    = CN6XXX_OQ_INTR_PKT,
 165                 .oq_intr_time                   = CN6XXX_OQ_INTR_TIME,
 166                 .pkts_per_intr                  = CN6XXX_OQ_PKTSPER_INTR,
 167         }
 168         ,
 169 
 170         .num_nic_ports                          = DEFAULT_NUM_NIC_PORTS_68XX,
 171         .num_def_rx_descs                       = CN6XXX_MAX_OQ_DESCRIPTORS,
 172         .num_def_tx_descs                       = CN6XXX_MAX_IQ_DESCRIPTORS,
 173         .def_rx_buf_size                        = CN6XXX_OQ_BUF_SIZE,
 174 
 175         .nic_if_cfg[0] = {
 176                 /* Max Txqs: Half for each of the two ports :max_iq/2 */
 177                 .max_txqs                       = MAX_TXQS_PER_INTF,
 178 
 179                 /* Actual configured value. Range could be: 1...max_txqs */
 180                 .num_txqs                       = DEF_TXQS_PER_INTF,
 181 
 182                 /* Max Rxqs: Half for each of the two ports :max_oq/2  */
 183                 .max_rxqs                       = MAX_RXQS_PER_INTF,
 184 
 185                 /* Actual configured value. Range could be: 1...max_rxqs */
 186                 .num_rxqs                       = DEF_RXQS_PER_INTF,
 187 
 188                 /* Num of desc for rx rings */
 189                 .num_rx_descs                   = CN6XXX_MAX_OQ_DESCRIPTORS,
 190 
 191                 /* Num of desc for tx rings */
 192                 .num_tx_descs                   = CN6XXX_MAX_IQ_DESCRIPTORS,
 193 
 194                 /* SKB size, We need not change buf size even for Jumbo frames.
 195                  * Octeon can send jumbo frames in 4 consecutive descriptors,
 196                  */
 197                 .rx_buf_size                    = CN6XXX_OQ_BUF_SIZE,
 198 
 199                 .base_queue                     = BASE_QUEUE_NOT_REQUESTED,
 200 
 201                 .gmx_port_id                    = 0,
 202         },
 203 
 204         .nic_if_cfg[1] = {
 205                 /* Max Txqs: Half for each of the two ports :max_iq/2 */
 206                 .max_txqs                       = MAX_TXQS_PER_INTF,
 207 
 208                 /* Actual configured value. Range could be: 1...max_txqs */
 209                 .num_txqs                       = DEF_TXQS_PER_INTF,
 210 
 211                 /* Max Rxqs: Half for each of the two ports :max_oq/2  */
 212                 .max_rxqs                       = MAX_RXQS_PER_INTF,
 213 
 214                 /* Actual configured value. Range could be: 1...max_rxqs */
 215                 .num_rxqs                       = DEF_RXQS_PER_INTF,
 216 
 217                 /* Num of desc for rx rings */
 218                 .num_rx_descs                   = CN6XXX_MAX_OQ_DESCRIPTORS,
 219 
 220                 /* Num of desc for tx rings */
 221                 .num_tx_descs                   = CN6XXX_MAX_IQ_DESCRIPTORS,
 222 
 223                 /* SKB size, We need not change buf size even for Jumbo frames.
 224                  * Octeon can send jumbo frames in 4 consecutive descriptors,
 225                  */
 226                 .rx_buf_size                    = CN6XXX_OQ_BUF_SIZE,
 227 
 228                 .base_queue                     = BASE_QUEUE_NOT_REQUESTED,
 229 
 230                 .gmx_port_id                    = 1,
 231         },
 232 
 233         .nic_if_cfg[2] = {
 234                 /* Max Txqs: Half for each of the two ports :max_iq/2 */
 235                 .max_txqs                       = MAX_TXQS_PER_INTF,
 236 
 237                 /* Actual configured value. Range could be: 1...max_txqs */
 238                 .num_txqs                       = DEF_TXQS_PER_INTF,
 239 
 240                 /* Max Rxqs: Half for each of the two ports :max_oq/2  */
 241                 .max_rxqs                       = MAX_RXQS_PER_INTF,
 242 
 243                 /* Actual configured value. Range could be: 1...max_rxqs */
 244                 .num_rxqs                       = DEF_RXQS_PER_INTF,
 245 
 246                 /* Num of desc for rx rings */
 247                 .num_rx_descs                   = CN6XXX_MAX_OQ_DESCRIPTORS,
 248 
 249                 /* Num of desc for tx rings */
 250                 .num_tx_descs                   = CN6XXX_MAX_IQ_DESCRIPTORS,
 251 
 252                 /* SKB size, We need not change buf size even for Jumbo frames.
 253                  * Octeon can send jumbo frames in 4 consecutive descriptors,
 254                  */
 255                 .rx_buf_size                    = CN6XXX_OQ_BUF_SIZE,
 256 
 257                 .base_queue                     = BASE_QUEUE_NOT_REQUESTED,
 258 
 259                 .gmx_port_id                    = 2,
 260         },
 261 
 262         .nic_if_cfg[3] = {
 263                 /* Max Txqs: Half for each of the two ports :max_iq/2 */
 264                 .max_txqs                       = MAX_TXQS_PER_INTF,
 265 
 266                 /* Actual configured value. Range could be: 1...max_txqs */
 267                 .num_txqs                       = DEF_TXQS_PER_INTF,
 268 
 269                 /* Max Rxqs: Half for each of the two ports :max_oq/2  */
 270                 .max_rxqs                       = MAX_RXQS_PER_INTF,
 271 
 272                 /* Actual configured value. Range could be: 1...max_rxqs */
 273                 .num_rxqs                       = DEF_RXQS_PER_INTF,
 274 
 275                 /* Num of desc for rx rings */
 276                 .num_rx_descs                   = CN6XXX_MAX_OQ_DESCRIPTORS,
 277 
 278                 /* Num of desc for tx rings */
 279                 .num_tx_descs                   = CN6XXX_MAX_IQ_DESCRIPTORS,
 280 
 281                 /* SKB size, We need not change buf size even for Jumbo frames.
 282                  * Octeon can send jumbo frames in 4 consecutive descriptors,
 283                  */
 284                 .rx_buf_size                    = CN6XXX_OQ_BUF_SIZE,
 285 
 286                 .base_queue                     = BASE_QUEUE_NOT_REQUESTED,
 287 
 288                 .gmx_port_id                    = 3,
 289         },
 290 
 291         /** Miscellaneous attributes */
 292         .misc                                   = {
 293                 /* Host driver link query interval */
 294                 .oct_link_query_interval        = 100,
 295 
 296                 /* Octeon link query interval */
 297                 .host_link_query_interval       = 500,
 298 
 299                 .enable_sli_oq_bp               = 0,
 300 
 301                 /* Control queue group */
 302                 .ctrlq_grp                      = 1,
 303         }
 304         ,
 305 };
 306 
 307 /** Default configuration
 308  *  for CN68XX OCTEON Model.
 309  */
 310 static struct octeon_config default_cn68xx_210nv_conf = {
 311         .card_type                              = LIO_210NV,
 312         .card_name                              = LIO_210NV_NAME,
 313 
 314         /** IQ attributes */
 315 
 316         .iq                                     = {
 317                 .max_iqs                        = CN6XXX_CFG_IO_QUEUES,
 318                 .pending_list_size              =
 319                         (CN6XXX_MAX_IQ_DESCRIPTORS * CN6XXX_CFG_IO_QUEUES),
 320                 .instr_type                     = OCTEON_64BYTE_INSTR,
 321                 .db_min                         = CN6XXX_DB_MIN,
 322                 .db_timeout                     = CN6XXX_DB_TIMEOUT,
 323         }
 324         ,
 325 
 326         /** OQ attributes */
 327         .oq                                     = {
 328                 .max_oqs                        = CN6XXX_CFG_IO_QUEUES,
 329                 .refill_threshold               = CN6XXX_OQ_REFIL_THRESHOLD,
 330                 .oq_intr_pkt                    = CN6XXX_OQ_INTR_PKT,
 331                 .oq_intr_time                   = CN6XXX_OQ_INTR_TIME,
 332                 .pkts_per_intr                  = CN6XXX_OQ_PKTSPER_INTR,
 333         }
 334         ,
 335 
 336         .num_nic_ports                  = DEFAULT_NUM_NIC_PORTS_68XX_210NV,
 337         .num_def_rx_descs               = CN6XXX_MAX_OQ_DESCRIPTORS,
 338         .num_def_tx_descs               = CN6XXX_MAX_IQ_DESCRIPTORS,
 339         .def_rx_buf_size                = CN6XXX_OQ_BUF_SIZE,
 340 
 341         .nic_if_cfg[0] = {
 342                 /* Max Txqs: Half for each of the two ports :max_iq/2 */
 343                 .max_txqs                       = MAX_TXQS_PER_INTF,
 344 
 345                 /* Actual configured value. Range could be: 1...max_txqs */
 346                 .num_txqs                       = DEF_TXQS_PER_INTF,
 347 
 348                 /* Max Rxqs: Half for each of the two ports :max_oq/2  */
 349                 .max_rxqs                       = MAX_RXQS_PER_INTF,
 350 
 351                 /* Actual configured value. Range could be: 1...max_rxqs */
 352                 .num_rxqs                       = DEF_RXQS_PER_INTF,
 353 
 354                 /* Num of desc for rx rings */
 355                 .num_rx_descs                   = CN6XXX_MAX_OQ_DESCRIPTORS,
 356 
 357                 /* Num of desc for tx rings */
 358                 .num_tx_descs                   = CN6XXX_MAX_IQ_DESCRIPTORS,
 359 
 360                 /* SKB size, We need not change buf size even for Jumbo frames.
 361                  * Octeon can send jumbo frames in 4 consecutive descriptors,
 362                  */
 363                 .rx_buf_size                    = CN6XXX_OQ_BUF_SIZE,
 364 
 365                 .base_queue                     = BASE_QUEUE_NOT_REQUESTED,
 366 
 367                 .gmx_port_id                    = 0,
 368         },
 369 
 370         .nic_if_cfg[1] = {
 371                 /* Max Txqs: Half for each of the two ports :max_iq/2 */
 372                 .max_txqs                       = MAX_TXQS_PER_INTF,
 373 
 374                 /* Actual configured value. Range could be: 1...max_txqs */
 375                 .num_txqs                       = DEF_TXQS_PER_INTF,
 376 
 377                 /* Max Rxqs: Half for each of the two ports :max_oq/2  */
 378                 .max_rxqs                       = MAX_RXQS_PER_INTF,
 379 
 380                 /* Actual configured value. Range could be: 1...max_rxqs */
 381                 .num_rxqs                       = DEF_RXQS_PER_INTF,
 382 
 383                 /* Num of desc for rx rings */
 384                 .num_rx_descs                   = CN6XXX_MAX_OQ_DESCRIPTORS,
 385 
 386                 /* Num of desc for tx rings */
 387                 .num_tx_descs                   = CN6XXX_MAX_IQ_DESCRIPTORS,
 388 
 389                 /* SKB size, We need not change buf size even for Jumbo frames.
 390                  * Octeon can send jumbo frames in 4 consecutive descriptors,
 391                  */
 392                 .rx_buf_size                    = CN6XXX_OQ_BUF_SIZE,
 393 
 394                 .base_queue                     = BASE_QUEUE_NOT_REQUESTED,
 395 
 396                 .gmx_port_id                    = 1,
 397         },
 398 
 399         /** Miscellaneous attributes */
 400         .misc                                   = {
 401                 /* Host driver link query interval */
 402                 .oct_link_query_interval        = 100,
 403 
 404                 /* Octeon link query interval */
 405                 .host_link_query_interval       = 500,
 406 
 407                 .enable_sli_oq_bp               = 0,
 408 
 409                 /* Control queue group */
 410                 .ctrlq_grp                      = 1,
 411         }
 412         ,
 413 };
 414 
 415 static struct octeon_config default_cn23xx_conf = {
 416         .card_type                              = LIO_23XX,
 417         .card_name                              = LIO_23XX_NAME,
 418         /** IQ attributes */
 419         .iq = {
 420                 .max_iqs                = CN23XX_CFG_IO_QUEUES,
 421                 .pending_list_size      = (CN23XX_DEFAULT_IQ_DESCRIPTORS *
 422                                            CN23XX_CFG_IO_QUEUES),
 423                 .instr_type             = OCTEON_64BYTE_INSTR,
 424                 .db_min                 = CN23XX_DB_MIN,
 425                 .db_timeout             = CN23XX_DB_TIMEOUT,
 426                 .iq_intr_pkt            = CN23XX_DEF_IQ_INTR_THRESHOLD,
 427         },
 428 
 429         /** OQ attributes */
 430         .oq = {
 431                 .max_oqs                = CN23XX_CFG_IO_QUEUES,
 432                 .pkts_per_intr  = CN23XX_OQ_PKTSPER_INTR,
 433                 .refill_threshold       = CN23XX_OQ_REFIL_THRESHOLD,
 434                 .oq_intr_pkt    = CN23XX_OQ_INTR_PKT,
 435                 .oq_intr_time   = CN23XX_OQ_INTR_TIME,
 436         },
 437 
 438         .num_nic_ports                          = DEFAULT_NUM_NIC_PORTS_23XX,
 439         .num_def_rx_descs                       = CN23XX_DEFAULT_OQ_DESCRIPTORS,
 440         .num_def_tx_descs                       = CN23XX_DEFAULT_IQ_DESCRIPTORS,
 441         .def_rx_buf_size                        = CN23XX_OQ_BUF_SIZE,
 442 
 443         /* For ethernet interface 0:  Port cfg Attributes */
 444         .nic_if_cfg[0] = {
 445                 /* Max Txqs: Half for each of the two ports :max_iq/2 */
 446                 .max_txqs                       = MAX_TXQS_PER_INTF,
 447 
 448                 /* Actual configured value. Range could be: 1...max_txqs */
 449                 .num_txqs                       = DEF_TXQS_PER_INTF,
 450 
 451                 /* Max Rxqs: Half for each of the two ports :max_oq/2  */
 452                 .max_rxqs                       = MAX_RXQS_PER_INTF,
 453 
 454                 /* Actual configured value. Range could be: 1...max_rxqs */
 455                 .num_rxqs                       = DEF_RXQS_PER_INTF,
 456 
 457                 /* Num of desc for rx rings */
 458                 .num_rx_descs                   = CN23XX_DEFAULT_OQ_DESCRIPTORS,
 459 
 460                 /* Num of desc for tx rings */
 461                 .num_tx_descs                   = CN23XX_DEFAULT_IQ_DESCRIPTORS,
 462 
 463                 /* SKB size, We need not change buf size even for Jumbo frames.
 464                  * Octeon can send jumbo frames in 4 consecutive descriptors,
 465                  */
 466                 .rx_buf_size                    = CN23XX_OQ_BUF_SIZE,
 467 
 468                 .base_queue                     = BASE_QUEUE_NOT_REQUESTED,
 469 
 470                 .gmx_port_id                    = 0,
 471         },
 472 
 473         .nic_if_cfg[1] = {
 474                 /* Max Txqs: Half for each of the two ports :max_iq/2 */
 475                 .max_txqs                       = MAX_TXQS_PER_INTF,
 476 
 477                 /* Actual configured value. Range could be: 1...max_txqs */
 478                 .num_txqs                       = DEF_TXQS_PER_INTF,
 479 
 480                 /* Max Rxqs: Half for each of the two ports :max_oq/2  */
 481                 .max_rxqs                       = MAX_RXQS_PER_INTF,
 482 
 483                 /* Actual configured value. Range could be: 1...max_rxqs */
 484                 .num_rxqs                       = DEF_RXQS_PER_INTF,
 485 
 486                 /* Num of desc for rx rings */
 487                 .num_rx_descs                   = CN23XX_DEFAULT_OQ_DESCRIPTORS,
 488 
 489                 /* Num of desc for tx rings */
 490                 .num_tx_descs                   = CN23XX_DEFAULT_IQ_DESCRIPTORS,
 491 
 492                 /* SKB size, We need not change buf size even for Jumbo frames.
 493                  * Octeon can send jumbo frames in 4 consecutive descriptors,
 494                  */
 495                 .rx_buf_size                    = CN23XX_OQ_BUF_SIZE,
 496 
 497                 .base_queue                     = BASE_QUEUE_NOT_REQUESTED,
 498 
 499                 .gmx_port_id                    = 1,
 500         },
 501 
 502         .misc                                   = {
 503                 /* Host driver link query interval */
 504                 .oct_link_query_interval        = 100,
 505 
 506                 /* Octeon link query interval */
 507                 .host_link_query_interval       = 500,
 508 
 509                 .enable_sli_oq_bp               = 0,
 510 
 511                 /* Control queue group */
 512                 .ctrlq_grp                      = 1,
 513         }
 514 };
 515 
 516 static struct octeon_config_ptr {
 517         u32 conf_type;
 518 } oct_conf_info[MAX_OCTEON_DEVICES] = {
 519         {
 520                 OCTEON_CONFIG_TYPE_DEFAULT,
 521         }, {
 522                 OCTEON_CONFIG_TYPE_DEFAULT,
 523         }, {
 524                 OCTEON_CONFIG_TYPE_DEFAULT,
 525         }, {
 526                 OCTEON_CONFIG_TYPE_DEFAULT,
 527         },
 528 };
 529 
 530 static char oct_dev_state_str[OCT_DEV_STATES + 1][32] = {
 531         "BEGIN", "PCI-ENABLE-DONE", "PCI-MAP-DONE", "DISPATCH-INIT-DONE",
 532         "IQ-INIT-DONE", "SCBUFF-POOL-INIT-DONE", "RESPLIST-INIT-DONE",
 533         "DROQ-INIT-DONE", "MBOX-SETUP-DONE", "MSIX-ALLOC-VECTOR-DONE",
 534         "INTR-SET-DONE", "IO-QUEUES-INIT-DONE", "CONSOLE-INIT-DONE",
 535         "HOST-READY", "CORE-READY", "RUNNING", "IN-RESET",
 536         "INVALID"
 537 };
 538 
 539 static char oct_dev_app_str[CVM_DRV_APP_COUNT + 1][32] = {
 540         "BASE", "NIC", "UNKNOWN"};
 541 
 542 static struct octeon_device *octeon_device[MAX_OCTEON_DEVICES];
 543 static atomic_t adapter_refcounts[MAX_OCTEON_DEVICES];
 544 static atomic_t adapter_fw_states[MAX_OCTEON_DEVICES];
 545 
 546 static u32 octeon_device_count;
 547 /* locks device array (i.e. octeon_device[]) */
 548 static spinlock_t octeon_devices_lock;
 549 
 550 static struct octeon_core_setup core_setup[MAX_OCTEON_DEVICES];
 551 
 552 static void oct_set_config_info(int oct_id, int conf_type)
 553 {
 554         if (conf_type < 0 || conf_type > (NUM_OCTEON_CONFS - 1))
 555                 conf_type = OCTEON_CONFIG_TYPE_DEFAULT;
 556         oct_conf_info[oct_id].conf_type = conf_type;
 557 }
 558 
 559 void octeon_init_device_list(int conf_type)
 560 {
 561         int i;
 562 
 563         memset(octeon_device, 0, (sizeof(void *) * MAX_OCTEON_DEVICES));
 564         for (i = 0; i <  MAX_OCTEON_DEVICES; i++)
 565                 oct_set_config_info(i, conf_type);
 566         spin_lock_init(&octeon_devices_lock);
 567 }
 568 
 569 static void *__retrieve_octeon_config_info(struct octeon_device *oct,
 570                                            u16 card_type)
 571 {
 572         u32 oct_id = oct->octeon_id;
 573         void *ret = NULL;
 574 
 575         switch (oct_conf_info[oct_id].conf_type) {
 576         case OCTEON_CONFIG_TYPE_DEFAULT:
 577                 if (oct->chip_id == OCTEON_CN66XX) {
 578                         ret = &default_cn66xx_conf;
 579                 } else if ((oct->chip_id == OCTEON_CN68XX) &&
 580                            (card_type == LIO_210NV)) {
 581                         ret = &default_cn68xx_210nv_conf;
 582                 } else if ((oct->chip_id == OCTEON_CN68XX) &&
 583                            (card_type == LIO_410NV)) {
 584                         ret = &default_cn68xx_conf;
 585                 } else if (oct->chip_id == OCTEON_CN23XX_PF_VID) {
 586                         ret = &default_cn23xx_conf;
 587                 } else if (oct->chip_id == OCTEON_CN23XX_VF_VID) {
 588                         ret = &default_cn23xx_conf;
 589                 }
 590                 break;
 591         default:
 592                 break;
 593         }
 594         return ret;
 595 }
 596 
 597 static int __verify_octeon_config_info(struct octeon_device *oct, void *conf)
 598 {
 599         switch (oct->chip_id) {
 600         case OCTEON_CN66XX:
 601         case OCTEON_CN68XX:
 602                 return lio_validate_cn6xxx_config_info(oct, conf);
 603         case OCTEON_CN23XX_PF_VID:
 604         case OCTEON_CN23XX_VF_VID:
 605                 return 0;
 606         default:
 607                 break;
 608         }
 609 
 610         return 1;
 611 }
 612 
 613 void *oct_get_config_info(struct octeon_device *oct, u16 card_type)
 614 {
 615         void *conf = NULL;
 616 
 617         conf = __retrieve_octeon_config_info(oct, card_type);
 618         if (!conf)
 619                 return NULL;
 620 
 621         if (__verify_octeon_config_info(oct, conf)) {
 622                 dev_err(&oct->pci_dev->dev, "Configuration verification failed\n");
 623                 return NULL;
 624         }
 625 
 626         return conf;
 627 }
 628 
 629 char *lio_get_state_string(atomic_t *state_ptr)
 630 {
 631         s32 istate = (s32)atomic_read(state_ptr);
 632 
 633         if (istate > OCT_DEV_STATES || istate < 0)
 634                 return oct_dev_state_str[OCT_DEV_STATE_INVALID];
 635         return oct_dev_state_str[istate];
 636 }
 637 
 638 static char *get_oct_app_string(u32 app_mode)
 639 {
 640         if (app_mode <= CVM_DRV_APP_END)
 641                 return oct_dev_app_str[app_mode - CVM_DRV_APP_START];
 642         return oct_dev_app_str[CVM_DRV_INVALID_APP - CVM_DRV_APP_START];
 643 }
 644 
 645 void octeon_free_device_mem(struct octeon_device *oct)
 646 {
 647         int i;
 648 
 649         for (i = 0; i < MAX_OCTEON_OUTPUT_QUEUES(oct); i++) {
 650                 if (oct->io_qmask.oq & BIT_ULL(i))
 651                         vfree(oct->droq[i]);
 652         }
 653 
 654         for (i = 0; i < MAX_OCTEON_INSTR_QUEUES(oct); i++) {
 655                 if (oct->io_qmask.iq & BIT_ULL(i))
 656                         vfree(oct->instr_queue[i]);
 657         }
 658 
 659         i = oct->octeon_id;
 660         vfree(oct);
 661 
 662         octeon_device[i] = NULL;
 663         octeon_device_count--;
 664 }
 665 
 666 static struct octeon_device *octeon_allocate_device_mem(u32 pci_id,
 667                                                         u32 priv_size)
 668 {
 669         struct octeon_device *oct;
 670         u8 *buf = NULL;
 671         u32 octdevsize = 0, configsize = 0, size;
 672 
 673         switch (pci_id) {
 674         case OCTEON_CN68XX:
 675         case OCTEON_CN66XX:
 676                 configsize = sizeof(struct octeon_cn6xxx);
 677                 break;
 678 
 679         case OCTEON_CN23XX_PF_VID:
 680                 configsize = sizeof(struct octeon_cn23xx_pf);
 681                 break;
 682         case OCTEON_CN23XX_VF_VID:
 683                 configsize = sizeof(struct octeon_cn23xx_vf);
 684                 break;
 685         default:
 686                 pr_err("%s: Unknown PCI Device: 0x%x\n",
 687                        __func__,
 688                        pci_id);
 689                 return NULL;
 690         }
 691 
 692         if (configsize & 0x7)
 693                 configsize += (8 - (configsize & 0x7));
 694 
 695         octdevsize = sizeof(struct octeon_device);
 696         if (octdevsize & 0x7)
 697                 octdevsize += (8 - (octdevsize & 0x7));
 698 
 699         if (priv_size & 0x7)
 700                 priv_size += (8 - (priv_size & 0x7));
 701 
 702         size = octdevsize + priv_size + configsize +
 703                 (sizeof(struct octeon_dispatch) * DISPATCH_LIST_SIZE);
 704 
 705         buf = vzalloc(size);
 706         if (!buf)
 707                 return NULL;
 708 
 709         oct = (struct octeon_device *)buf;
 710         oct->priv = (void *)(buf + octdevsize);
 711         oct->chip = (void *)(buf + octdevsize + priv_size);
 712         oct->dispatch.dlist = (struct octeon_dispatch *)
 713                 (buf + octdevsize + priv_size + configsize);
 714 
 715         return oct;
 716 }
 717 
 718 struct octeon_device *octeon_allocate_device(u32 pci_id,
 719                                              u32 priv_size)
 720 {
 721         u32 oct_idx = 0;
 722         struct octeon_device *oct = NULL;
 723 
 724         spin_lock(&octeon_devices_lock);
 725 
 726         for (oct_idx = 0; oct_idx < MAX_OCTEON_DEVICES; oct_idx++)
 727                 if (!octeon_device[oct_idx])
 728                         break;
 729 
 730         if (oct_idx < MAX_OCTEON_DEVICES) {
 731                 oct = octeon_allocate_device_mem(pci_id, priv_size);
 732                 if (oct) {
 733                         octeon_device_count++;
 734                         octeon_device[oct_idx] = oct;
 735                 }
 736         }
 737 
 738         spin_unlock(&octeon_devices_lock);
 739         if (!oct)
 740                 return NULL;
 741 
 742         spin_lock_init(&oct->pci_win_lock);
 743         spin_lock_init(&oct->mem_access_lock);
 744 
 745         oct->octeon_id = oct_idx;
 746         snprintf(oct->device_name, sizeof(oct->device_name),
 747                  "LiquidIO%d", (oct->octeon_id));
 748 
 749         return oct;
 750 }
 751 
 752 /** Register a device's bus location at initialization time.
 753  *  @param octeon_dev - pointer to the octeon device structure.
 754  *  @param bus        - PCIe bus #
 755  *  @param dev        - PCIe device #
 756  *  @param func       - PCIe function #
 757  *  @param is_pf      - TRUE for PF, FALSE for VF
 758  *  @return reference count of device's adapter
 759  */
 760 int octeon_register_device(struct octeon_device *oct,
 761                            int bus, int dev, int func, int is_pf)
 762 {
 763         int idx, refcount;
 764 
 765         oct->loc.bus = bus;
 766         oct->loc.dev = dev;
 767         oct->loc.func = func;
 768 
 769         oct->adapter_refcount = &adapter_refcounts[oct->octeon_id];
 770         atomic_set(oct->adapter_refcount, 0);
 771 
 772         /* Like the reference count, the f/w state is shared 'per-adapter' */
 773         oct->adapter_fw_state = &adapter_fw_states[oct->octeon_id];
 774         atomic_set(oct->adapter_fw_state, FW_NEEDS_TO_BE_LOADED);
 775 
 776         spin_lock(&octeon_devices_lock);
 777         for (idx = (int)oct->octeon_id - 1; idx >= 0; idx--) {
 778                 if (!octeon_device[idx]) {
 779                         dev_err(&oct->pci_dev->dev,
 780                                 "%s: Internal driver error, missing dev",
 781                                 __func__);
 782                         spin_unlock(&octeon_devices_lock);
 783                         atomic_inc(oct->adapter_refcount);
 784                         return 1; /* here, refcount is guaranteed to be 1 */
 785                 }
 786                 /* If another device is at same bus/dev, use its refcounter
 787                  * (and f/w state variable).
 788                  */
 789                 if ((octeon_device[idx]->loc.bus == bus) &&
 790                     (octeon_device[idx]->loc.dev == dev)) {
 791                         oct->adapter_refcount =
 792                                 octeon_device[idx]->adapter_refcount;
 793                         oct->adapter_fw_state =
 794                                 octeon_device[idx]->adapter_fw_state;
 795                         break;
 796                 }
 797         }
 798         spin_unlock(&octeon_devices_lock);
 799 
 800         atomic_inc(oct->adapter_refcount);
 801         refcount = atomic_read(oct->adapter_refcount);
 802 
 803         dev_dbg(&oct->pci_dev->dev, "%s: %02x:%02x:%d refcount %u", __func__,
 804                 oct->loc.bus, oct->loc.dev, oct->loc.func, refcount);
 805 
 806         return refcount;
 807 }
 808 
 809 /** Deregister a device at de-initialization time.
 810  *  @param octeon_dev - pointer to the octeon device structure.
 811  *  @return reference count of device's adapter
 812  */
 813 int octeon_deregister_device(struct octeon_device *oct)
 814 {
 815         int refcount;
 816 
 817         atomic_dec(oct->adapter_refcount);
 818         refcount = atomic_read(oct->adapter_refcount);
 819 
 820         dev_dbg(&oct->pci_dev->dev, "%s: %04d:%02d:%d refcount %u", __func__,
 821                 oct->loc.bus, oct->loc.dev, oct->loc.func, refcount);
 822 
 823         return refcount;
 824 }
 825 
 826 int
 827 octeon_allocate_ioq_vector(struct octeon_device *oct, u32 num_ioqs)
 828 {
 829         struct octeon_ioq_vector *ioq_vector;
 830         int cpu_num;
 831         int size;
 832         int i;
 833 
 834         size = sizeof(struct octeon_ioq_vector) * num_ioqs;
 835 
 836         oct->ioq_vector = vzalloc(size);
 837         if (!oct->ioq_vector)
 838                 return -1;
 839         for (i = 0; i < num_ioqs; i++) {
 840                 ioq_vector              = &oct->ioq_vector[i];
 841                 ioq_vector->oct_dev     = oct;
 842                 ioq_vector->iq_index    = i;
 843                 ioq_vector->droq_index  = i;
 844                 ioq_vector->mbox        = oct->mbox[i];
 845 
 846                 cpu_num = i % num_online_cpus();
 847                 cpumask_set_cpu(cpu_num, &ioq_vector->affinity_mask);
 848 
 849                 if (oct->chip_id == OCTEON_CN23XX_PF_VID)
 850                         ioq_vector->ioq_num     = i + oct->sriov_info.pf_srn;
 851                 else
 852                         ioq_vector->ioq_num     = i;
 853         }
 854 
 855         return 0;
 856 }
 857 
 858 void
 859 octeon_free_ioq_vector(struct octeon_device *oct)
 860 {
 861         vfree(oct->ioq_vector);
 862 }
 863 
 864 /* this function is only for setting up the first queue */
 865 int octeon_setup_instr_queues(struct octeon_device *oct)
 866 {
 867         u32 num_descs = 0;
 868         u32 iq_no = 0;
 869         union oct_txpciq txpciq;
 870         int numa_node = dev_to_node(&oct->pci_dev->dev);
 871 
 872         if (OCTEON_CN6XXX(oct))
 873                 num_descs =
 874                         CFG_GET_NUM_DEF_TX_DESCS(CHIP_CONF(oct, cn6xxx));
 875         else if (OCTEON_CN23XX_PF(oct))
 876                 num_descs = CFG_GET_NUM_DEF_TX_DESCS(CHIP_CONF(oct, cn23xx_pf));
 877         else if (OCTEON_CN23XX_VF(oct))
 878                 num_descs = CFG_GET_NUM_DEF_TX_DESCS(CHIP_CONF(oct, cn23xx_vf));
 879 
 880         oct->num_iqs = 0;
 881 
 882         oct->instr_queue[0] = vzalloc_node(sizeof(*oct->instr_queue[0]),
 883                                 numa_node);
 884         if (!oct->instr_queue[0])
 885                 oct->instr_queue[0] =
 886                         vzalloc(sizeof(struct octeon_instr_queue));
 887         if (!oct->instr_queue[0])
 888                 return 1;
 889         memset(oct->instr_queue[0], 0, sizeof(struct octeon_instr_queue));
 890         oct->instr_queue[0]->q_index = 0;
 891         oct->instr_queue[0]->app_ctx = (void *)(size_t)0;
 892         oct->instr_queue[0]->ifidx = 0;
 893         txpciq.u64 = 0;
 894         txpciq.s.q_no = iq_no;
 895         txpciq.s.pkind = oct->pfvf_hsword.pkind;
 896         txpciq.s.use_qpg = 0;
 897         txpciq.s.qpg = 0;
 898         if (octeon_init_instr_queue(oct, txpciq, num_descs)) {
 899                 /* prevent memory leak */
 900                 vfree(oct->instr_queue[0]);
 901                 oct->instr_queue[0] = NULL;
 902                 return 1;
 903         }
 904 
 905         oct->num_iqs++;
 906         return 0;
 907 }
 908 
 909 int octeon_setup_output_queues(struct octeon_device *oct)
 910 {
 911         u32 num_descs = 0;
 912         u32 desc_size = 0;
 913         u32 oq_no = 0;
 914         int numa_node = dev_to_node(&oct->pci_dev->dev);
 915 
 916         if (OCTEON_CN6XXX(oct)) {
 917                 num_descs =
 918                         CFG_GET_NUM_DEF_RX_DESCS(CHIP_CONF(oct, cn6xxx));
 919                 desc_size =
 920                         CFG_GET_DEF_RX_BUF_SIZE(CHIP_CONF(oct, cn6xxx));
 921         } else if (OCTEON_CN23XX_PF(oct)) {
 922                 num_descs = CFG_GET_NUM_DEF_RX_DESCS(CHIP_CONF(oct, cn23xx_pf));
 923                 desc_size = CFG_GET_DEF_RX_BUF_SIZE(CHIP_CONF(oct, cn23xx_pf));
 924         } else if (OCTEON_CN23XX_VF(oct)) {
 925                 num_descs = CFG_GET_NUM_DEF_RX_DESCS(CHIP_CONF(oct, cn23xx_vf));
 926                 desc_size = CFG_GET_DEF_RX_BUF_SIZE(CHIP_CONF(oct, cn23xx_vf));
 927         }
 928         oct->num_oqs = 0;
 929         oct->droq[0] = vzalloc_node(sizeof(*oct->droq[0]), numa_node);
 930         if (!oct->droq[0])
 931                 oct->droq[0] = vzalloc(sizeof(*oct->droq[0]));
 932         if (!oct->droq[0])
 933                 return 1;
 934 
 935         if (octeon_init_droq(oct, oq_no, num_descs, desc_size, NULL)) {
 936                 vfree(oct->droq[oq_no]);
 937                 oct->droq[oq_no] = NULL;
 938                 return 1;
 939         }
 940         oct->num_oqs++;
 941 
 942         return 0;
 943 }
 944 
 945 int octeon_set_io_queues_off(struct octeon_device *oct)
 946 {
 947         int loop = BUSY_READING_REG_VF_LOOP_COUNT;
 948 
 949         if (OCTEON_CN6XXX(oct)) {
 950                 octeon_write_csr(oct, CN6XXX_SLI_PKT_INSTR_ENB, 0);
 951                 octeon_write_csr(oct, CN6XXX_SLI_PKT_OUT_ENB, 0);
 952         } else if (oct->chip_id == OCTEON_CN23XX_VF_VID) {
 953                 u32 q_no;
 954 
 955                 /* IOQs will already be in reset.
 956                  * If RST bit is set, wait for quiet bit to be set.
 957                  * Once quiet bit is set, clear the RST bit.
 958                  */
 959                 for (q_no = 0; q_no < oct->sriov_info.rings_per_vf; q_no++) {
 960                         u64 reg_val = octeon_read_csr64(
 961                                 oct, CN23XX_VF_SLI_IQ_PKT_CONTROL64(q_no));
 962 
 963                         while ((reg_val & CN23XX_PKT_INPUT_CTL_RST) &&
 964                                !(reg_val &  CN23XX_PKT_INPUT_CTL_QUIET) &&
 965                                loop) {
 966                                 reg_val = octeon_read_csr64(
 967                                         oct, CN23XX_SLI_IQ_PKT_CONTROL64(q_no));
 968                                 loop--;
 969                         }
 970                         if (!loop) {
 971                                 dev_err(&oct->pci_dev->dev,
 972                                         "clearing the reset reg failed or setting the quiet reg failed for qno: %u\n",
 973                                         q_no);
 974                                 return -1;
 975                         }
 976 
 977                         reg_val = reg_val & ~CN23XX_PKT_INPUT_CTL_RST;
 978                         octeon_write_csr64(oct,
 979                                            CN23XX_SLI_IQ_PKT_CONTROL64(q_no),
 980                                            reg_val);
 981 
 982                         reg_val = octeon_read_csr64(
 983                                         oct, CN23XX_SLI_IQ_PKT_CONTROL64(q_no));
 984                         if (reg_val & CN23XX_PKT_INPUT_CTL_RST) {
 985                                 dev_err(&oct->pci_dev->dev,
 986                                         "unable to reset qno %u\n", q_no);
 987                                 return -1;
 988                         }
 989                 }
 990         }
 991         return 0;
 992 }
 993 
 994 void octeon_set_droq_pkt_op(struct octeon_device *oct,
 995                             u32 q_no,
 996                             u32 enable)
 997 {
 998         u32 reg_val = 0;
 999 
1000         /* Disable the i/p and o/p queues for this Octeon. */
1001         if (OCTEON_CN6XXX(oct)) {
1002                 reg_val = octeon_read_csr(oct, CN6XXX_SLI_PKT_OUT_ENB);
1003 
1004                 if (enable)
1005                         reg_val = reg_val | (1 << q_no);
1006                 else
1007                         reg_val = reg_val & (~(1 << q_no));
1008 
1009                 octeon_write_csr(oct, CN6XXX_SLI_PKT_OUT_ENB, reg_val);
1010         }
1011 }
1012 
1013 int octeon_init_dispatch_list(struct octeon_device *oct)
1014 {
1015         u32 i;
1016 
1017         oct->dispatch.count = 0;
1018 
1019         for (i = 0; i < DISPATCH_LIST_SIZE; i++) {
1020                 oct->dispatch.dlist[i].opcode = 0;
1021                 INIT_LIST_HEAD(&oct->dispatch.dlist[i].list);
1022         }
1023 
1024         for (i = 0; i <= REQTYPE_LAST; i++)
1025                 octeon_register_reqtype_free_fn(oct, i, NULL);
1026 
1027         spin_lock_init(&oct->dispatch.lock);
1028 
1029         return 0;
1030 }
1031 
1032 void octeon_delete_dispatch_list(struct octeon_device *oct)
1033 {
1034         u32 i;
1035         struct list_head freelist, *temp, *tmp2;
1036 
1037         INIT_LIST_HEAD(&freelist);
1038 
1039         spin_lock_bh(&oct->dispatch.lock);
1040 
1041         for (i = 0; i < DISPATCH_LIST_SIZE; i++) {
1042                 struct list_head *dispatch;
1043 
1044                 dispatch = &oct->dispatch.dlist[i].list;
1045                 while (dispatch->next != dispatch) {
1046                         temp = dispatch->next;
1047                         list_move_tail(temp, &freelist);
1048                 }
1049 
1050                 oct->dispatch.dlist[i].opcode = 0;
1051         }
1052 
1053         oct->dispatch.count = 0;
1054 
1055         spin_unlock_bh(&oct->dispatch.lock);
1056 
1057         list_for_each_safe(temp, tmp2, &freelist) {
1058                 list_del(temp);
1059                 vfree(temp);
1060         }
1061 }
1062 
1063 octeon_dispatch_fn_t
1064 octeon_get_dispatch(struct octeon_device *octeon_dev, u16 opcode,
1065                     u16 subcode)
1066 {
1067         u32 idx;
1068         struct list_head *dispatch;
1069         octeon_dispatch_fn_t fn = NULL;
1070         u16 combined_opcode = OPCODE_SUBCODE(opcode, subcode);
1071 
1072         idx = combined_opcode & OCTEON_OPCODE_MASK;
1073 
1074         spin_lock_bh(&octeon_dev->dispatch.lock);
1075 
1076         if (octeon_dev->dispatch.count == 0) {
1077                 spin_unlock_bh(&octeon_dev->dispatch.lock);
1078                 return NULL;
1079         }
1080 
1081         if (!(octeon_dev->dispatch.dlist[idx].opcode)) {
1082                 spin_unlock_bh(&octeon_dev->dispatch.lock);
1083                 return NULL;
1084         }
1085 
1086         if (octeon_dev->dispatch.dlist[idx].opcode == combined_opcode) {
1087                 fn = octeon_dev->dispatch.dlist[idx].dispatch_fn;
1088         } else {
1089                 list_for_each(dispatch,
1090                               &octeon_dev->dispatch.dlist[idx].list) {
1091                         if (((struct octeon_dispatch *)dispatch)->opcode ==
1092                             combined_opcode) {
1093                                 fn = ((struct octeon_dispatch *)
1094                                       dispatch)->dispatch_fn;
1095                                 break;
1096                         }
1097                 }
1098         }
1099 
1100         spin_unlock_bh(&octeon_dev->dispatch.lock);
1101         return fn;
1102 }
1103 
1104 /* octeon_register_dispatch_fn
1105  * Parameters:
1106  *   octeon_id - id of the octeon device.
1107  *   opcode    - opcode for which driver should call the registered function
1108  *   subcode   - subcode for which driver should call the registered function
1109  *   fn        - The function to call when a packet with "opcode" arrives in
1110  *                octeon output queues.
1111  *   fn_arg    - The argument to be passed when calling function "fn".
1112  * Description:
1113  *   Registers a function and its argument to be called when a packet
1114  *   arrives in Octeon output queues with "opcode".
1115  * Returns:
1116  *   Success: 0
1117  *   Failure: 1
1118  * Locks:
1119  *   No locks are held.
1120  */
1121 int
1122 octeon_register_dispatch_fn(struct octeon_device *oct,
1123                             u16 opcode,
1124                             u16 subcode,
1125                             octeon_dispatch_fn_t fn, void *fn_arg)
1126 {
1127         u32 idx;
1128         octeon_dispatch_fn_t pfn;
1129         u16 combined_opcode = OPCODE_SUBCODE(opcode, subcode);
1130 
1131         idx = combined_opcode & OCTEON_OPCODE_MASK;
1132 
1133         spin_lock_bh(&oct->dispatch.lock);
1134         /* Add dispatch function to first level of lookup table */
1135         if (oct->dispatch.dlist[idx].opcode == 0) {
1136                 oct->dispatch.dlist[idx].opcode = combined_opcode;
1137                 oct->dispatch.dlist[idx].dispatch_fn = fn;
1138                 oct->dispatch.dlist[idx].arg = fn_arg;
1139                 oct->dispatch.count++;
1140                 spin_unlock_bh(&oct->dispatch.lock);
1141                 return 0;
1142         }
1143 
1144         spin_unlock_bh(&oct->dispatch.lock);
1145 
1146         /* Check if there was a function already registered for this
1147          * opcode/subcode.
1148          */
1149         pfn = octeon_get_dispatch(oct, opcode, subcode);
1150         if (!pfn) {
1151                 struct octeon_dispatch *dispatch;
1152 
1153                 dev_dbg(&oct->pci_dev->dev,
1154                         "Adding opcode to dispatch list linked list\n");
1155                 dispatch = (struct octeon_dispatch *)
1156                            vmalloc(sizeof(struct octeon_dispatch));
1157                 if (!dispatch) {
1158                         dev_err(&oct->pci_dev->dev,
1159                                 "No memory to add dispatch function\n");
1160                         return 1;
1161                 }
1162                 dispatch->opcode = combined_opcode;
1163                 dispatch->dispatch_fn = fn;
1164                 dispatch->arg = fn_arg;
1165 
1166                 /* Add dispatch function to linked list of fn ptrs
1167                  * at the hashed index.
1168                  */
1169                 spin_lock_bh(&oct->dispatch.lock);
1170                 list_add(&dispatch->list, &oct->dispatch.dlist[idx].list);
1171                 oct->dispatch.count++;
1172                 spin_unlock_bh(&oct->dispatch.lock);
1173 
1174         } else {
1175                 if (pfn == fn &&
1176                     octeon_get_dispatch_arg(oct, opcode, subcode) == fn_arg)
1177                         return 0;
1178 
1179                 dev_err(&oct->pci_dev->dev,
1180                         "Found previously registered dispatch fn for opcode/subcode: %x/%x\n",
1181                         opcode, subcode);
1182                 return 1;
1183         }
1184 
1185         return 0;
1186 }
1187 
1188 int octeon_core_drv_init(struct octeon_recv_info *recv_info, void *buf)
1189 {
1190         u32 i;
1191         char app_name[16];
1192         struct octeon_device *oct = (struct octeon_device *)buf;
1193         struct octeon_recv_pkt *recv_pkt = recv_info->recv_pkt;
1194         struct octeon_core_setup *cs = NULL;
1195         u32 num_nic_ports = 0;
1196 
1197         if (OCTEON_CN6XXX(oct))
1198                 num_nic_ports =
1199                         CFG_GET_NUM_NIC_PORTS(CHIP_CONF(oct, cn6xxx));
1200         else if (OCTEON_CN23XX_PF(oct))
1201                 num_nic_ports =
1202                         CFG_GET_NUM_NIC_PORTS(CHIP_CONF(oct, cn23xx_pf));
1203 
1204         if (atomic_read(&oct->status) >= OCT_DEV_RUNNING) {
1205                 dev_err(&oct->pci_dev->dev, "Received CORE OK when device state is 0x%x\n",
1206                         atomic_read(&oct->status));
1207                 goto core_drv_init_err;
1208         }
1209 
1210         strncpy(app_name,
1211                 get_oct_app_string(
1212                 (u32)recv_pkt->rh.r_core_drv_init.app_mode),
1213                 sizeof(app_name) - 1);
1214         oct->app_mode = (u32)recv_pkt->rh.r_core_drv_init.app_mode;
1215         if (recv_pkt->rh.r_core_drv_init.app_mode == CVM_DRV_NIC_APP) {
1216                 oct->fw_info.max_nic_ports =
1217                         (u32)recv_pkt->rh.r_core_drv_init.max_nic_ports;
1218                 oct->fw_info.num_gmx_ports =
1219                         (u32)recv_pkt->rh.r_core_drv_init.num_gmx_ports;
1220         }
1221 
1222         if (oct->fw_info.max_nic_ports < num_nic_ports) {
1223                 dev_err(&oct->pci_dev->dev,
1224                         "Config has more ports than firmware allows (%d > %d).\n",
1225                         num_nic_ports, oct->fw_info.max_nic_ports);
1226                 goto core_drv_init_err;
1227         }
1228         oct->fw_info.app_cap_flags = recv_pkt->rh.r_core_drv_init.app_cap_flags;
1229         oct->fw_info.app_mode = (u32)recv_pkt->rh.r_core_drv_init.app_mode;
1230         oct->pfvf_hsword.app_mode = (u32)recv_pkt->rh.r_core_drv_init.app_mode;
1231 
1232         oct->pfvf_hsword.pkind = recv_pkt->rh.r_core_drv_init.pkind;
1233 
1234         for (i = 0; i < oct->num_iqs; i++)
1235                 oct->instr_queue[i]->txpciq.s.pkind = oct->pfvf_hsword.pkind;
1236 
1237         atomic_set(&oct->status, OCT_DEV_CORE_OK);
1238 
1239         cs = &core_setup[oct->octeon_id];
1240 
1241         if (recv_pkt->buffer_size[0] != (sizeof(*cs) + OCT_DROQ_INFO_SIZE)) {
1242                 dev_dbg(&oct->pci_dev->dev, "Core setup bytes expected %u found %d\n",
1243                         (u32)sizeof(*cs),
1244                         recv_pkt->buffer_size[0]);
1245         }
1246 
1247         memcpy(cs, get_rbd(
1248                recv_pkt->buffer_ptr[0]) + OCT_DROQ_INFO_SIZE, sizeof(*cs));
1249 
1250         strncpy(oct->boardinfo.name, cs->boardname, OCT_BOARD_NAME);
1251         strncpy(oct->boardinfo.serial_number, cs->board_serial_number,
1252                 OCT_SERIAL_LEN);
1253 
1254         octeon_swap_8B_data((u64 *)cs, (sizeof(*cs) >> 3));
1255 
1256         oct->boardinfo.major = cs->board_rev_major;
1257         oct->boardinfo.minor = cs->board_rev_minor;
1258 
1259         dev_info(&oct->pci_dev->dev,
1260                  "Running %s (%llu Hz)\n",
1261                  app_name, CVM_CAST64(cs->corefreq));
1262 
1263 core_drv_init_err:
1264         for (i = 0; i < recv_pkt->buffer_count; i++)
1265                 recv_buffer_free(recv_pkt->buffer_ptr[i]);
1266         octeon_free_recv_info(recv_info);
1267         return 0;
1268 }
1269 
1270 int octeon_get_tx_qsize(struct octeon_device *oct, u32 q_no)
1271 
1272 {
1273         if (oct && (q_no < MAX_OCTEON_INSTR_QUEUES(oct)) &&
1274             (oct->io_qmask.iq & BIT_ULL(q_no)))
1275                 return oct->instr_queue[q_no]->max_count;
1276 
1277         return -1;
1278 }
1279 
1280 int octeon_get_rx_qsize(struct octeon_device *oct, u32 q_no)
1281 {
1282         if (oct && (q_no < MAX_OCTEON_OUTPUT_QUEUES(oct)) &&
1283             (oct->io_qmask.oq & BIT_ULL(q_no)))
1284                 return oct->droq[q_no]->max_count;
1285         return -1;
1286 }
1287 
1288 /* Retruns the host firmware handshake OCTEON specific configuration */
1289 struct octeon_config *octeon_get_conf(struct octeon_device *oct)
1290 {
1291         struct octeon_config *default_oct_conf = NULL;
1292 
1293         /* check the OCTEON Device model & return the corresponding octeon
1294          * configuration
1295          */
1296 
1297         if (OCTEON_CN6XXX(oct)) {
1298                 default_oct_conf =
1299                         (struct octeon_config *)(CHIP_CONF(oct, cn6xxx));
1300         } else if (OCTEON_CN23XX_PF(oct)) {
1301                 default_oct_conf = (struct octeon_config *)
1302                         (CHIP_CONF(oct, cn23xx_pf));
1303         } else if (OCTEON_CN23XX_VF(oct)) {
1304                 default_oct_conf = (struct octeon_config *)
1305                         (CHIP_CONF(oct, cn23xx_vf));
1306         }
1307         return default_oct_conf;
1308 }
1309 
1310 /* scratch register address is same in all the OCT-II and CN70XX models */
1311 #define CNXX_SLI_SCRATCH1   0x3C0
1312 
1313 /** Get the octeon device pointer.
1314  *  @param octeon_id  - The id for which the octeon device pointer is required.
1315  *  @return Success: Octeon device pointer.
1316  *  @return Failure: NULL.
1317  */
1318 struct octeon_device *lio_get_device(u32 octeon_id)
1319 {
1320         if (octeon_id >= MAX_OCTEON_DEVICES)
1321                 return NULL;
1322         else
1323                 return octeon_device[octeon_id];
1324 }
1325 
1326 u64 lio_pci_readq(struct octeon_device *oct, u64 addr)
1327 {
1328         u64 val64;
1329         unsigned long flags;
1330         u32 val32, addrhi;
1331 
1332         spin_lock_irqsave(&oct->pci_win_lock, flags);
1333 
1334         /* The windowed read happens when the LSB of the addr is written.
1335          * So write MSB first
1336          */
1337         addrhi = (addr >> 32);
1338         if ((oct->chip_id == OCTEON_CN66XX) ||
1339             (oct->chip_id == OCTEON_CN68XX) ||
1340             (oct->chip_id == OCTEON_CN23XX_PF_VID))
1341                 addrhi |= 0x00060000;
1342         writel(addrhi, oct->reg_list.pci_win_rd_addr_hi);
1343 
1344         /* Read back to preserve ordering of writes */
1345         val32 = readl(oct->reg_list.pci_win_rd_addr_hi);
1346 
1347         writel(addr & 0xffffffff, oct->reg_list.pci_win_rd_addr_lo);
1348         val32 = readl(oct->reg_list.pci_win_rd_addr_lo);
1349 
1350         val64 = readq(oct->reg_list.pci_win_rd_data);
1351 
1352         spin_unlock_irqrestore(&oct->pci_win_lock, flags);
1353 
1354         return val64;
1355 }
1356 
1357 void lio_pci_writeq(struct octeon_device *oct,
1358                     u64 val,
1359                     u64 addr)
1360 {
1361         u32 val32;
1362         unsigned long flags;
1363 
1364         spin_lock_irqsave(&oct->pci_win_lock, flags);
1365 
1366         writeq(addr, oct->reg_list.pci_win_wr_addr);
1367 
1368         /* The write happens when the LSB is written. So write MSB first. */
1369         writel(val >> 32, oct->reg_list.pci_win_wr_data_hi);
1370         /* Read the MSB to ensure ordering of writes. */
1371         val32 = readl(oct->reg_list.pci_win_wr_data_hi);
1372 
1373         writel(val & 0xffffffff, oct->reg_list.pci_win_wr_data_lo);
1374 
1375         spin_unlock_irqrestore(&oct->pci_win_lock, flags);
1376 }
1377 
1378 int octeon_mem_access_ok(struct octeon_device *oct)
1379 {
1380         u64 access_okay = 0;
1381         u64 lmc0_reset_ctl;
1382 
1383         /* Check to make sure a DDR interface is enabled */
1384         if (OCTEON_CN23XX_PF(oct)) {
1385                 lmc0_reset_ctl = lio_pci_readq(oct, CN23XX_LMC0_RESET_CTL);
1386                 access_okay =
1387                         (lmc0_reset_ctl & CN23XX_LMC0_RESET_CTL_DDR3RST_MASK);
1388         } else {
1389                 lmc0_reset_ctl = lio_pci_readq(oct, CN6XXX_LMC0_RESET_CTL);
1390                 access_okay =
1391                         (lmc0_reset_ctl & CN6XXX_LMC0_RESET_CTL_DDR3RST_MASK);
1392         }
1393 
1394         return access_okay ? 0 : 1;
1395 }
1396 
1397 int octeon_wait_for_ddr_init(struct octeon_device *oct, u32 *timeout)
1398 {
1399         int ret = 1;
1400         u32 ms;
1401 
1402         if (!timeout)
1403                 return ret;
1404 
1405         for (ms = 0; (ret != 0) && ((*timeout == 0) || (ms <= *timeout));
1406              ms += HZ / 10) {
1407                 ret = octeon_mem_access_ok(oct);
1408 
1409                 /* wait 100 ms */
1410                 if (ret)
1411                         schedule_timeout_uninterruptible(HZ / 10);
1412         }
1413 
1414         return ret;
1415 }
1416 
1417 /** Get the octeon id assigned to the octeon device passed as argument.
1418  *  This function is exported to other modules.
1419  *  @param dev - octeon device pointer passed as a void *.
1420  *  @return octeon device id
1421  */
1422 int lio_get_device_id(void *dev)
1423 {
1424         struct octeon_device *octeon_dev = (struct octeon_device *)dev;
1425         u32 i;
1426 
1427         for (i = 0; i < MAX_OCTEON_DEVICES; i++)
1428                 if (octeon_device[i] == octeon_dev)
1429                         return octeon_dev->octeon_id;
1430         return -1;
1431 }
1432 
1433 void lio_enable_irq(struct octeon_droq *droq, struct octeon_instr_queue *iq)
1434 {
1435         u64 instr_cnt;
1436         u32 pkts_pend;
1437         struct octeon_device *oct = NULL;
1438 
1439         /* the whole thing needs to be atomic, ideally */
1440         if (droq) {
1441                 pkts_pend = (u32)atomic_read(&droq->pkts_pending);
1442                 writel(droq->pkt_count - pkts_pend, droq->pkts_sent_reg);
1443                 droq->pkt_count = pkts_pend;
1444                 oct = droq->oct_dev;
1445         }
1446         if (iq) {
1447                 spin_lock_bh(&iq->lock);
1448                 writel(iq->pkts_processed, iq->inst_cnt_reg);
1449                 iq->pkt_in_done -= iq->pkts_processed;
1450                 iq->pkts_processed = 0;
1451                 /* this write needs to be flushed before we release the lock */
1452                 spin_unlock_bh(&iq->lock);
1453                 oct = iq->oct_dev;
1454         }
1455         /*write resend. Writing RESEND in SLI_PKTX_CNTS should be enough
1456          *to trigger tx interrupts as well, if they are pending.
1457          */
1458         if (oct && (OCTEON_CN23XX_PF(oct) || OCTEON_CN23XX_VF(oct))) {
1459                 if (droq)
1460                         writeq(CN23XX_INTR_RESEND, droq->pkts_sent_reg);
1461                 /*we race with firmrware here. read and write the IN_DONE_CNTS*/
1462                 else if (iq) {
1463                         instr_cnt =  readq(iq->inst_cnt_reg);
1464                         writeq(((instr_cnt & 0xFFFFFFFF00000000ULL) |
1465                                 CN23XX_INTR_RESEND),
1466                                iq->inst_cnt_reg);
1467                 }
1468         }
1469 }
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/net/ethernet/cavium/liquidio/octeon_device.c

DEFINITIONS
