drivers/net/ethernet/qlogic/qed/qed_dev_api.h

   1 /* QLogic qed NIC Driver
   2  * Copyright (c) 2015-2017  QLogic Corporation
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and /or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  */
  32
  33 #ifndef _QED_DEV_API_H
  34 #define _QED_DEV_API_H
  35
  36 #include <linux/types.h>
  37 #include <linux/kernel.h>
  38 #include <linux/slab.h>
  39 #include <linux/qed/qed_chain.h>
  40 #include <linux/qed/qed_if.h>
  41 #include "qed_int.h"
  42
  43 /**
  44  * @brief qed_init_dp - initialize the debug level
  45  *
  46  * @param cdev
  47  * @param dp_module
  48  * @param dp_level
  49  */
  50 void qed_init_dp(struct qed_dev *cdev,
  51                  u32 dp_module,
  52                  u8 dp_level);
  53
  54 /**
  55  * @brief qed_init_struct - initialize the device structure to
  56  *        its defaults
  57  *
  58  * @param cdev
  59  */
  60 void qed_init_struct(struct qed_dev *cdev);
  61
  62 /**
  63  * @brief qed_resc_free -
  64  *
  65  * @param cdev
  66  */
  67 void qed_resc_free(struct qed_dev *cdev);
  68
  69 /**
  70  * @brief qed_resc_alloc -
  71  *
  72  * @param cdev
  73  *
  74  * @return int
  75  */
  76 int qed_resc_alloc(struct qed_dev *cdev);
  77
  78 /**
  79  * @brief qed_resc_setup -
  80  *
  81  * @param cdev
  82  */
  83 void qed_resc_setup(struct qed_dev *cdev);
  84
  85 enum qed_override_force_load {
  86         QED_OVERRIDE_FORCE_LOAD_NONE,
  87         QED_OVERRIDE_FORCE_LOAD_ALWAYS,
  88         QED_OVERRIDE_FORCE_LOAD_NEVER,
  89 };
  90
  91 struct qed_drv_load_params {
  92         /* Indicates whether the driver is running over a crash kernel.
  93          * As part of the load request, this will be used for providing the
  94          * driver role to the MFW.
  95          * In case of a crash kernel over PDA - this should be set to false.
  96          */
  97         bool is_crash_kernel;
  98
  99         /* The timeout value that the MFW should use when locking the engine for
 100          * the driver load process.
 101          * A value of '0' means the default value, and '255' means no timeout.
 102          */
 103         u8 mfw_timeout_val;
 104 #define QED_LOAD_REQ_LOCK_TO_DEFAULT    0
 105 #define QED_LOAD_REQ_LOCK_TO_NONE       255
 106
 107         /* Avoid engine reset when first PF loads on it */
 108         bool avoid_eng_reset;
 109
 110         /* Allow overriding the default force load behavior */
 111         enum qed_override_force_load override_force_load;
 112 };
 113
 114 struct qed_hw_init_params {
 115         /* Tunneling parameters */
 116         struct qed_tunnel_info *p_tunn;
 117
 118         bool b_hw_start;
 119
 120         /* Interrupt mode [msix, inta, etc.] to use */
 121         enum qed_int_mode int_mode;
 122
 123         /* NPAR tx switching to be used for vports for tx-switching */
 124         bool allow_npar_tx_switch;
 125
 126         /* Binary fw data pointer in binary fw file */
 127         const u8 *bin_fw_data;
 128
 129         /* Driver load parameters */
 130         struct qed_drv_load_params *p_drv_load_params;
 131 };
 132
 133 /**
 134  * @brief qed_hw_init -
 135  *
 136  * @param cdev
 137  * @param p_params
 138  *
 139  * @return int
 140  */
 141 int qed_hw_init(struct qed_dev *cdev, struct qed_hw_init_params *p_params);
 142
 143 /**
 144  * @brief qed_hw_timers_stop_all - stop the timers HW block
 145  *
 146  * @param cdev
 147  *
 148  * @return void
 149  */
 150 void qed_hw_timers_stop_all(struct qed_dev *cdev);
 151
 152 /**
 153  * @brief qed_hw_stop -
 154  *
 155  * @param cdev
 156  *
 157  * @return int
 158  */
 159 int qed_hw_stop(struct qed_dev *cdev);
 160
 161 /**
 162  * @brief qed_hw_stop_fastpath -should be called incase
 163  *              slowpath is still required for the device,
 164  *              but fastpath is not.
 165  *
 166  * @param cdev
 167  *
 168  * @return int
 169  */
 170 int qed_hw_stop_fastpath(struct qed_dev *cdev);
 171
 172 /**
 173  * @brief qed_hw_start_fastpath -restart fastpath traffic,
 174  *              only if hw_stop_fastpath was called
 175  *
 176  * @param p_hwfn
 177  *
 178  * @return int
 179  */
 180 int qed_hw_start_fastpath(struct qed_hwfn *p_hwfn);
 181
 182
 183 /**
 184  * @brief qed_hw_prepare -
 185  *
 186  * @param cdev
 187  * @param personality - personality to initialize
 188  *
 189  * @return int
 190  */
 191 int qed_hw_prepare(struct qed_dev *cdev,
 192                    int personality);
 193
 194 /**
 195  * @brief qed_hw_remove -
 196  *
 197  * @param cdev
 198  */
 199 void qed_hw_remove(struct qed_dev *cdev);
 200
 201 /**
 202  * @brief qed_ptt_acquire - Allocate a PTT window
 203  *
 204  * Should be called at the entry point to the driver (at the beginning of an
 205  * exported function)
 206  *
 207  * @param p_hwfn
 208  *
 209  * @return struct qed_ptt
 210  */
 211 struct qed_ptt *qed_ptt_acquire(struct qed_hwfn *p_hwfn);
 212
 213 /**
 214  * @brief qed_ptt_release - Release PTT Window
 215  *
 216  * Should be called at the end of a flow - at the end of the function that
 217  * acquired the PTT.
 218  *
 219  *
 220  * @param p_hwfn
 221  * @param p_ptt
 222  */
 223 void qed_ptt_release(struct qed_hwfn *p_hwfn,
 224                      struct qed_ptt *p_ptt);
 225 void qed_reset_vport_stats(struct qed_dev *cdev);
 226
 227 enum qed_dmae_address_type_t {
 228         QED_DMAE_ADDRESS_HOST_VIRT,
 229         QED_DMAE_ADDRESS_HOST_PHYS,
 230         QED_DMAE_ADDRESS_GRC
 231 };
 232
 233 /**
 234  * @brief qed_dmae_host2grc - copy data from source addr to
 235  * dmae registers using the given ptt
 236  *
 237  * @param p_hwfn
 238  * @param p_ptt
 239  * @param source_addr
 240  * @param grc_addr (dmae_data_offset)
 241  * @param size_in_dwords
 242  * @param p_params (default parameters will be used in case of NULL)
 243  */
 244 int
 245 qed_dmae_host2grc(struct qed_hwfn *p_hwfn,
 246                   struct qed_ptt *p_ptt,
 247                   u64 source_addr,
 248                   u32 grc_addr,
 249                   u32 size_in_dwords,
 250                   struct qed_dmae_params *p_params);
 251
 252  /**
 253  * @brief qed_dmae_grc2host - Read data from dmae data offset
 254  * to source address using the given ptt
 255  *
 256  * @param p_ptt
 257  * @param grc_addr (dmae_data_offset)
 258  * @param dest_addr
 259  * @param size_in_dwords
 260  * @param p_params (default parameters will be used in case of NULL)
 261  */
 262 int qed_dmae_grc2host(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt,
 263                       u32 grc_addr, dma_addr_t dest_addr, u32 size_in_dwords,
 264                       struct qed_dmae_params *p_params);
 265
 266 /**
 267  * @brief qed_dmae_host2host - copy data from to source address
 268  * to a destination adress (for SRIOV) using the given ptt
 269  *
 270  * @param p_hwfn
 271  * @param p_ptt
 272  * @param source_addr
 273  * @param dest_addr
 274  * @param size_in_dwords
 275  * @param p_params (default parameters will be used in case of NULL)
 276  */
 277 int qed_dmae_host2host(struct qed_hwfn *p_hwfn,
 278                        struct qed_ptt *p_ptt,
 279                        dma_addr_t source_addr,
 280                        dma_addr_t dest_addr,
 281                        u32 size_in_dwords, struct qed_dmae_params *p_params);
 282
 283 /**
 284  * @brief qed_chain_alloc - Allocate and initialize a chain
 285  *
 286  * @param p_hwfn
 287  * @param intended_use
 288  * @param mode
 289  * @param num_elems
 290  * @param elem_size
 291  * @param p_chain
 292  * @param ext_pbl - a possible external PBL
 293  *
 294  * @return int
 295  */
 296 int
 297 qed_chain_alloc(struct qed_dev *cdev,
 298                 enum qed_chain_use_mode intended_use,
 299                 enum qed_chain_mode mode,
 300                 enum qed_chain_cnt_type cnt_type,
 301                 u32 num_elems,
 302                 size_t elem_size,
 303                 struct qed_chain *p_chain, struct qed_chain_ext_pbl *ext_pbl);
 304
 305 /**
 306  * @brief qed_chain_free - Free chain DMA memory
 307  *
 308  * @param p_hwfn
 309  * @param p_chain
 310  */
 311 void qed_chain_free(struct qed_dev *cdev, struct qed_chain *p_chain);
 312
 313 /**
 314  * @@brief qed_fw_l2_queue - Get absolute L2 queue ID
 315  *
 316  *  @param p_hwfn
 317  *  @param src_id - relative to p_hwfn
 318  *  @param dst_id - absolute per engine
 319  *
 320  *  @return int
 321  */
 322 int qed_fw_l2_queue(struct qed_hwfn *p_hwfn,
 323                     u16 src_id,
 324                     u16 *dst_id);
 325
 326 /**
 327  * @@brief qed_fw_vport - Get absolute vport ID
 328  *
 329  *  @param p_hwfn
 330  *  @param src_id - relative to p_hwfn
 331  *  @param dst_id - absolute per engine
 332  *
 333  *  @return int
 334  */
 335 int qed_fw_vport(struct qed_hwfn *p_hwfn,
 336                  u8 src_id,
 337                  u8 *dst_id);
 338
 339 /**
 340  * @@brief qed_fw_rss_eng - Get absolute RSS engine ID
 341  *
 342  *  @param p_hwfn
 343  *  @param src_id - relative to p_hwfn
 344  *  @param dst_id - absolute per engine
 345  *
 346  *  @return int
 347  */
 348 int qed_fw_rss_eng(struct qed_hwfn *p_hwfn,
 349                    u8 src_id,
 350                    u8 *dst_id);
 351
 352 /**
 353  * @brief qed_llh_get_num_ppfid - Return the allocated number of LLH filter
 354  *      banks that are allocated to the PF.
 355  *
 356  * @param cdev
 357  *
 358  * @return u8 - Number of LLH filter banks
 359  */
 360 u8 qed_llh_get_num_ppfid(struct qed_dev *cdev);
 361
 362 enum qed_eng {
 363         QED_ENG0,
 364         QED_ENG1,
 365         QED_BOTH_ENG,
 366 };
 367
 368 /**
 369  * @brief qed_llh_set_ppfid_affinity - Set the engine affinity for the given
 370  *      LLH filter bank.
 371  *
 372  * @param cdev
 373  * @param ppfid - relative within the allocated ppfids ('0' is the default one).
 374  * @param eng
 375  *
 376  * @return int
 377  */
 378 int qed_llh_set_ppfid_affinity(struct qed_dev *cdev,
 379                                u8 ppfid, enum qed_eng eng);
 380
 381 /**
 382  * @brief qed_llh_set_roce_affinity - Set the RoCE engine affinity
 383  *
 384  * @param cdev
 385  * @param eng
 386  *
 387  * @return int
 388  */
 389 int qed_llh_set_roce_affinity(struct qed_dev *cdev, enum qed_eng eng);
 390
 391 /**
 392  * @brief qed_llh_add_mac_filter - Add a LLH MAC filter into the given filter
 393  *      bank.
 394  *
 395  * @param cdev
 396  * @param ppfid - relative within the allocated ppfids ('0' is the default one).
 397  * @param mac_addr - MAC to add
 398  */
 399 int qed_llh_add_mac_filter(struct qed_dev *cdev,
 400                            u8 ppfid, u8 mac_addr[ETH_ALEN]);
 401
 402 /**
 403  * @brief qed_llh_remove_mac_filter - Remove a LLH MAC filter from the given
 404  *      filter bank.
 405  *
 406  * @param p_ptt
 407  * @param p_filter - MAC to remove
 408  */
 409 void qed_llh_remove_mac_filter(struct qed_dev *cdev,
 410                                u8 ppfid, u8 mac_addr[ETH_ALEN]);
 411
 412 enum qed_llh_prot_filter_type_t {
 413         QED_LLH_FILTER_ETHERTYPE,
 414         QED_LLH_FILTER_TCP_SRC_PORT,
 415         QED_LLH_FILTER_TCP_DEST_PORT,
 416         QED_LLH_FILTER_TCP_SRC_AND_DEST_PORT,
 417         QED_LLH_FILTER_UDP_SRC_PORT,
 418         QED_LLH_FILTER_UDP_DEST_PORT,
 419         QED_LLH_FILTER_UDP_SRC_AND_DEST_PORT
 420 };
 421
 422 /**
 423  * @brief qed_llh_add_protocol_filter - Add a LLH protocol filter into the
 424  *      given filter bank.
 425  *
 426  * @param cdev
 427  * @param ppfid - relative within the allocated ppfids ('0' is the default one).
 428  * @param type - type of filters and comparing
 429  * @param source_port_or_eth_type - source port or ethertype to add
 430  * @param dest_port - destination port to add
 431  * @param type - type of filters and comparing
 432  */
 433 int
 434 qed_llh_add_protocol_filter(struct qed_dev *cdev,
 435                             u8 ppfid,
 436                             enum qed_llh_prot_filter_type_t type,
 437                             u16 source_port_or_eth_type, u16 dest_port);
 438
 439 /**
 440  * @brief qed_llh_remove_protocol_filter - Remove a LLH protocol filter from
 441  *      the given filter bank.
 442  *
 443  * @param cdev
 444  * @param ppfid - relative within the allocated ppfids ('0' is the default one).
 445  * @param type - type of filters and comparing
 446  * @param source_port_or_eth_type - source port or ethertype to add
 447  * @param dest_port - destination port to add
 448  */
 449 void
 450 qed_llh_remove_protocol_filter(struct qed_dev *cdev,
 451                                u8 ppfid,
 452                                enum qed_llh_prot_filter_type_t type,
 453                                u16 source_port_or_eth_type, u16 dest_port);
 454
 455 /**
 456  * *@brief Cleanup of previous driver remains prior to load
 457  *
 458  * @param p_hwfn
 459  * @param p_ptt
 460  * @param id - For PF, engine-relative. For VF, PF-relative.
 461  * @param is_vf - true iff cleanup is made for a VF.
 462  *
 463  * @return int
 464  */
 465 int qed_final_cleanup(struct qed_hwfn *p_hwfn,
 466                       struct qed_ptt *p_ptt, u16 id, bool is_vf);
 467
 468 /**
 469  * @brief qed_get_queue_coalesce - Retrieve coalesce value for a given queue.
 470  *
 471  * @param p_hwfn
 472  * @param p_coal - store coalesce value read from the hardware.
 473  * @param p_handle
 474  *
 475  * @return int
 476  **/
 477 int qed_get_queue_coalesce(struct qed_hwfn *p_hwfn, u16 *coal, void *handle);
 478
 479 /**
 480  * @brief qed_set_queue_coalesce - Configure coalesce parameters for Rx and
 481  *    Tx queue. The fact that we can configure coalescing to up to 511, but on
 482  *    varying accuracy [the bigger the value the less accurate] up to a mistake
 483  *    of 3usec for the highest values.
 484  *    While the API allows setting coalescing per-qid, all queues sharing a SB
 485  *    should be in same range [i.e., either 0-0x7f, 0x80-0xff or 0x100-0x1ff]
 486  *    otherwise configuration would break.
 487  *
 488  *
 489  * @param rx_coal - Rx Coalesce value in micro seconds.
 490  * @param tx_coal - TX Coalesce value in micro seconds.
 491  * @param p_handle
 492  *
 493  * @return int
 494  **/
 495 int
 496 qed_set_queue_coalesce(u16 rx_coal, u16 tx_coal, void *p_handle);
 497
 498 /**
 499  * @brief qed_pglueb_set_pfid_enable - Enable or disable PCI BUS MASTER
 500  *
 501  * @param p_hwfn
 502  * @param p_ptt
 503  * @param b_enable - true/false
 504  *
 505  * @return int
 506  */
 507 int qed_pglueb_set_pfid_enable(struct qed_hwfn *p_hwfn,
 508                                struct qed_ptt *p_ptt, bool b_enable);
 509
 510 /**
 511  * @brief db_recovery_add - add doorbell information to the doorbell
 512  * recovery mechanism.
 513  *
 514  * @param cdev
 515  * @param db_addr - doorbell address
 516  * @param db_data - address of where db_data is stored
 517  * @param db_width - doorbell is 32b pr 64b
 518  * @param db_space - doorbell recovery addresses are user or kernel space
 519  */
 520 int qed_db_recovery_add(struct qed_dev *cdev,
 521                         void __iomem *db_addr,
 522                         void *db_data,
 523                         enum qed_db_rec_width db_width,
 524                         enum qed_db_rec_space db_space);
 525
 526 /**
 527  * @brief db_recovery_del - remove doorbell information from the doorbell
 528  * recovery mechanism. db_data serves as key (db_addr is not unique).
 529  *
 530  * @param cdev
 531  * @param db_addr - doorbell address
 532  * @param db_data - address where db_data is stored. Serves as key for the
 533  *                  entry to delete.
 534  */
 535 int qed_db_recovery_del(struct qed_dev *cdev,
 536                         void __iomem *db_addr, void *db_data);
 537
 538
 539 const char *qed_hw_get_resc_name(enum qed_resources res_id);
 540 #endif