drivers/infiniband/hw/i40iw/i40iw.h

   1 /*******************************************************************************
   2 *
   3 * Copyright (c) 2015-2016 Intel Corporation.  All rights reserved.
   4 *
   5 * This software is available to you under a choice of one of two
   6 * licenses.  You may choose to be licensed under the terms of the GNU
   7 * General Public License (GPL) Version 2, available from the file
   8 * COPYING in the main directory of this source tree, or the
   9 * OpenFabrics.org BSD license below:
  10 *
  11 *   Redistribution and use in source and binary forms, with or
  12 *   without modification, are permitted provided that the following
  13 *   conditions are met:
  14 *
  15 *    - Redistributions of source code must retain the above
  16 *       copyright notice, this list of conditions and the following
  17 *       disclaimer.
  18 *
  19 *    - Redistributions in binary form must reproduce the above
  20 *       copyright notice, this list of conditions and the following
  21 *       disclaimer in the documentation and/or other materials
  22 *       provided with the distribution.
  23 *
  24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  31 * SOFTWARE.
  32 *
  33 *******************************************************************************/
  34
  35 #ifndef I40IW_IW_H
  36 #define I40IW_IW_H
  37 #include <linux/netdevice.h>
  38 #include <linux/inetdevice.h>
  39 #include <linux/spinlock.h>
  40 #include <linux/kernel.h>
  41 #include <linux/delay.h>
  42 #include <linux/pci.h>
  43 #include <linux/dma-mapping.h>
  44 #include <linux/workqueue.h>
  45 #include <linux/slab.h>
  46 #include <linux/io.h>
  47 #include <linux/crc32c.h>
  48 #include <rdma/ib_smi.h>
  49 #include <rdma/ib_verbs.h>
  50 #include <rdma/ib_pack.h>
  51 #include <rdma/rdma_cm.h>
  52 #include <rdma/iw_cm.h>
  53 #include <crypto/hash.h>
  54
  55 #include "i40iw_status.h"
  56 #include "i40iw_osdep.h"
  57 #include "i40iw_d.h"
  58 #include "i40iw_hmc.h"
  59
  60 #include <i40e_client.h>
  61 #include "i40iw_type.h"
  62 #include "i40iw_p.h"
  63 #include "i40iw_ucontext.h"
  64 #include "i40iw_pble.h"
  65 #include "i40iw_verbs.h"
  66 #include "i40iw_cm.h"
  67 #include "i40iw_user.h"
  68 #include "i40iw_puda.h"
  69
  70 #define I40IW_FW_VERSION  2
  71 #define I40IW_HW_VERSION  2
  72
  73 #define I40IW_ARP_ADD     1
  74 #define I40IW_ARP_DELETE  2
  75 #define I40IW_ARP_RESOLVE 3
  76
  77 #define I40IW_MACIP_ADD     1
  78 #define I40IW_MACIP_DELETE  2
  79
  80 #define IW_CCQ_SIZE         (I40IW_CQP_SW_SQSIZE_2048 + 1)
  81 #define IW_CEQ_SIZE         2048
  82 #define IW_AEQ_SIZE         2048
  83
  84 #define RX_BUF_SIZE            (1536 + 8)
  85 #define IW_REG0_SIZE           (4 * 1024)
  86 #define IW_TX_TIMEOUT          (6 * HZ)
  87 #define IW_FIRST_QPN           1
  88 #define IW_SW_CONTEXT_ALIGN    1024
  89
  90 #define MAX_DPC_ITERATIONS              128
  91
  92 #define I40IW_EVENT_TIMEOUT             100000
  93 #define I40IW_VCHNL_EVENT_TIMEOUT       100000
  94
  95 #define I40IW_NO_VLAN                   0xffff
  96 #define I40IW_NO_QSET                   0xffff
  97
  98 /* access to mcast filter list */
  99 #define IW_ADD_MCAST false
 100 #define IW_DEL_MCAST true
 101
 102 #define I40IW_DRV_OPT_ENABLE_MPA_VER_0     0x00000001
 103 #define I40IW_DRV_OPT_DISABLE_MPA_CRC      0x00000002
 104 #define I40IW_DRV_OPT_DISABLE_FIRST_WRITE  0x00000004
 105 #define I40IW_DRV_OPT_DISABLE_INTF         0x00000008
 106 #define I40IW_DRV_OPT_ENABLE_MSI           0x00000010
 107 #define I40IW_DRV_OPT_DUAL_LOGICAL_PORT    0x00000020
 108 #define I40IW_DRV_OPT_NO_INLINE_DATA       0x00000080
 109 #define I40IW_DRV_OPT_DISABLE_INT_MOD      0x00000100
 110 #define I40IW_DRV_OPT_DISABLE_VIRT_WQ      0x00000200
 111 #define I40IW_DRV_OPT_ENABLE_PAU           0x00000400
 112 #define I40IW_DRV_OPT_MCAST_LOGPORT_MAP    0x00000800
 113
 114 #define IW_HMC_OBJ_TYPE_NUM ARRAY_SIZE(iw_hmc_obj_types)
 115 #define IW_CFG_FPM_QP_COUNT             32768
 116 #define I40IW_MAX_PAGES_PER_FMR         512
 117 #define I40IW_MIN_PAGES_PER_FMR         1
 118
 119 #define I40IW_MTU_TO_MSS                40
 120 #define I40IW_DEFAULT_MSS               1460
 121
 122 struct i40iw_cqp_compl_info {
 123         u32 op_ret_val;
 124         u16 maj_err_code;
 125         u16 min_err_code;
 126         bool error;
 127         u8 op_code;
 128 };
 129
 130 #define i40iw_pr_err(fmt, args ...) pr_err("%s: "fmt, __func__, ## args)
 131
 132 #define i40iw_pr_info(fmt, args ...) pr_info("%s: " fmt, __func__, ## args)
 133
 134 #define i40iw_pr_warn(fmt, args ...) pr_warn("%s: " fmt, __func__, ## args)
 135
 136 struct i40iw_cqp_request {
 137         struct cqp_commands_info info;
 138         wait_queue_head_t waitq;
 139         struct list_head list;
 140         atomic_t refcount;
 141         void (*callback_fcn)(struct i40iw_cqp_request*, u32);
 142         void *param;
 143         struct i40iw_cqp_compl_info compl_info;
 144         bool waiting;
 145         bool request_done;
 146         bool dynamic;
 147 };
 148
 149 struct i40iw_cqp {
 150         struct i40iw_sc_cqp sc_cqp;
 151         spinlock_t req_lock; /*cqp request list */
 152         wait_queue_head_t waitq;
 153         struct i40iw_dma_mem sq;
 154         struct i40iw_dma_mem host_ctx;
 155         u64 *scratch_array;
 156         struct i40iw_cqp_request *cqp_requests;
 157         struct list_head cqp_avail_reqs;
 158         struct list_head cqp_pending_reqs;
 159 };
 160
 161 struct i40iw_device;
 162
 163 struct i40iw_ccq {
 164         struct i40iw_sc_cq sc_cq;
 165         spinlock_t lock; /* ccq control */
 166         wait_queue_head_t waitq;
 167         struct i40iw_dma_mem mem_cq;
 168         struct i40iw_dma_mem shadow_area;
 169 };
 170
 171 struct i40iw_ceq {
 172         struct i40iw_sc_ceq sc_ceq;
 173         struct i40iw_dma_mem mem;
 174         u32 irq;
 175         u32 msix_idx;
 176         struct i40iw_device *iwdev;
 177         struct tasklet_struct dpc_tasklet;
 178 };
 179
 180 struct i40iw_aeq {
 181         struct i40iw_sc_aeq sc_aeq;
 182         struct i40iw_dma_mem mem;
 183 };
 184
 185 struct i40iw_arp_entry {
 186         u32 ip_addr[4];
 187         u8 mac_addr[ETH_ALEN];
 188 };
 189
 190 enum init_completion_state {
 191         INVALID_STATE = 0,
 192         INITIAL_STATE,
 193         CQP_CREATED,
 194         HMC_OBJS_CREATED,
 195         PBLE_CHUNK_MEM,
 196         CCQ_CREATED,
 197         AEQ_CREATED,
 198         CEQ_CREATED,
 199         ILQ_CREATED,
 200         IEQ_CREATED,
 201         INET_NOTIFIER,
 202         IP_ADDR_REGISTERED,
 203         RDMA_DEV_REGISTERED
 204 };
 205
 206 struct i40iw_msix_vector {
 207         u32 idx;
 208         u32 irq;
 209         u32 cpu_affinity;
 210         u32 ceq_id;
 211 };
 212
 213 #define I40IW_MSIX_TABLE_SIZE   65
 214
 215 struct virtchnl_work {
 216         struct work_struct work;
 217         union {
 218                 struct i40iw_cqp_request *cqp_request;
 219                 struct i40iw_virtchnl_work_info work_info;
 220         };
 221 };
 222
 223 struct i40e_qvlist_info;
 224
 225 struct i40iw_device {
 226         struct i40iw_ib_device *iwibdev;
 227         struct net_device *netdev;
 228         wait_queue_head_t vchnl_waitq;
 229         struct i40iw_sc_dev sc_dev;
 230         struct i40iw_handler *hdl;
 231         struct i40e_info *ldev;
 232         struct i40e_client *client;
 233         struct i40iw_hw hw;
 234         struct i40iw_cm_core cm_core;
 235         unsigned long *mem_resources;
 236         unsigned long *allocated_qps;
 237         unsigned long *allocated_cqs;
 238         unsigned long *allocated_mrs;
 239         unsigned long *allocated_pds;
 240         unsigned long *allocated_arps;
 241         struct i40iw_qp **qp_table;
 242         bool msix_shared;
 243         u32 msix_count;
 244         struct i40iw_msix_vector *iw_msixtbl;
 245         struct i40e_qvlist_info *iw_qvlist;
 246
 247         struct i40iw_hmc_pble_rsrc *pble_rsrc;
 248         struct i40iw_arp_entry *arp_table;
 249         struct i40iw_cqp cqp;
 250         struct i40iw_ccq ccq;
 251         u32 ceqs_count;
 252         struct i40iw_ceq *ceqlist;
 253         struct i40iw_aeq aeq;
 254         u32 arp_table_size;
 255         u32 next_arp_index;
 256         spinlock_t resource_lock; /* hw resource access */
 257         spinlock_t qptable_lock;
 258         u32 vendor_id;
 259         u32 vendor_part_id;
 260         u32 of_device_registered;
 261
 262         u32 device_cap_flags;
 263         unsigned long db_start;
 264         u8 resource_profile;
 265         u8 max_rdma_vfs;
 266         u8 max_enabled_vfs;
 267         u8 max_sge;
 268         u8 iw_status;
 269         u8 send_term_ok;
 270         bool push_mode;         /* Initialized from parameter passed to driver */
 271
 272         /* x710 specific */
 273         struct mutex pbl_mutex;
 274         struct tasklet_struct dpc_tasklet;
 275         struct workqueue_struct *virtchnl_wq;
 276         struct virtchnl_work virtchnl_w[I40IW_MAX_PE_ENABLED_VF_COUNT];
 277         struct i40iw_dma_mem obj_mem;
 278         struct i40iw_dma_mem obj_next;
 279         u8 *hmc_info_mem;
 280         u32 sd_type;
 281         struct workqueue_struct *param_wq;
 282         atomic_t params_busy;
 283         u32 mss;
 284         enum init_completion_state init_state;
 285         u16 mac_ip_table_idx;
 286         atomic_t vchnl_msgs;
 287         u32 max_mr;
 288         u32 max_qp;
 289         u32 max_cq;
 290         u32 max_pd;
 291         u32 next_qp;
 292         u32 next_cq;
 293         u32 next_pd;
 294         u32 max_mr_size;
 295         u32 max_qp_wr;
 296         u32 max_cqe;
 297         u32 mr_stagmask;
 298         u32 mpa_version;
 299         bool dcb;
 300 };
 301
 302 struct i40iw_ib_device {
 303         struct ib_device ibdev;
 304         struct i40iw_device *iwdev;
 305 };
 306
 307 struct i40iw_handler {
 308         struct list_head list;
 309         struct i40e_client *client;
 310         struct i40iw_device device;
 311         struct i40e_info ldev;
 312 };
 313
 314 /**
 315  * to_iwdev - get device
 316  * @ibdev: ib device
 317  **/
 318 static inline struct i40iw_device *to_iwdev(struct ib_device *ibdev)
 319 {
 320         return container_of(ibdev, struct i40iw_ib_device, ibdev)->iwdev;
 321 }
 322
 323 /**
 324  * to_ucontext - get user context
 325  * @ibucontext: ib user context
 326  **/
 327 static inline struct i40iw_ucontext *to_ucontext(struct ib_ucontext *ibucontext)
 328 {
 329         return container_of(ibucontext, struct i40iw_ucontext, ibucontext);
 330 }
 331
 332 /**
 333  * to_iwpd - get protection domain
 334  * @ibpd: ib pd
 335  **/
 336 static inline struct i40iw_pd *to_iwpd(struct ib_pd *ibpd)
 337 {
 338         return container_of(ibpd, struct i40iw_pd, ibpd);
 339 }
 340
 341 /**
 342  * to_iwmr - get device memory region
 343  * @ibdev: ib memory region
 344  **/
 345 static inline struct i40iw_mr *to_iwmr(struct ib_mr *ibmr)
 346 {
 347         return container_of(ibmr, struct i40iw_mr, ibmr);
 348 }
 349
 350 /**
 351  * to_iwmr_from_ibfmr - get device memory region
 352  * @ibfmr: ib fmr
 353  **/
 354 static inline struct i40iw_mr *to_iwmr_from_ibfmr(struct ib_fmr *ibfmr)
 355 {
 356         return container_of(ibfmr, struct i40iw_mr, ibfmr);
 357 }
 358
 359 /**
 360  * to_iwmw - get device memory window
 361  * @ibmw: ib memory window
 362  **/
 363 static inline struct i40iw_mr *to_iwmw(struct ib_mw *ibmw)
 364 {
 365         return container_of(ibmw, struct i40iw_mr, ibmw);
 366 }
 367
 368 /**
 369  * to_iwcq - get completion queue
 370  * @ibcq: ib cqdevice
 371  **/
 372 static inline struct i40iw_cq *to_iwcq(struct ib_cq *ibcq)
 373 {
 374         return container_of(ibcq, struct i40iw_cq, ibcq);
 375 }
 376
 377 /**
 378  * to_iwqp - get device qp
 379  * @ibqp: ib qp
 380  **/
 381 static inline struct i40iw_qp *to_iwqp(struct ib_qp *ibqp)
 382 {
 383         return container_of(ibqp, struct i40iw_qp, ibqp);
 384 }
 385
 386 /* i40iw.c */
 387 void i40iw_add_ref(struct ib_qp *);
 388 void i40iw_rem_ref(struct ib_qp *);
 389 struct ib_qp *i40iw_get_qp(struct ib_device *, int);
 390
 391 void i40iw_flush_wqes(struct i40iw_device *iwdev,
 392                       struct i40iw_qp *qp);
 393
 394 void i40iw_manage_arp_cache(struct i40iw_device *iwdev,
 395                             unsigned char *mac_addr,
 396                             u32 *ip_addr,
 397                             bool ipv4,
 398                             u32 action);
 399
 400 int i40iw_manage_apbvt(struct i40iw_device *iwdev,
 401                        u16 accel_local_port,
 402                        bool add_port);
 403
 404 struct i40iw_cqp_request *i40iw_get_cqp_request(struct i40iw_cqp *cqp, bool wait);
 405 void i40iw_free_cqp_request(struct i40iw_cqp *cqp, struct i40iw_cqp_request *cqp_request);
 406 void i40iw_put_cqp_request(struct i40iw_cqp *cqp, struct i40iw_cqp_request *cqp_request);
 407
 408 /**
 409  * i40iw_alloc_resource - allocate a resource
 410  * @iwdev: device pointer
 411  * @resource_array: resource bit array:
 412  * @max_resources: maximum resource number
 413  * @req_resources_num: Allocated resource number
 414  * @next: next free id
 415  **/
 416 static inline int i40iw_alloc_resource(struct i40iw_device *iwdev,
 417                                        unsigned long *resource_array,
 418                                        u32 max_resources,
 419                                        u32 *req_resource_num,
 420                                        u32 *next)
 421 {
 422         u32 resource_num;
 423         unsigned long flags;
 424
 425         spin_lock_irqsave(&iwdev->resource_lock, flags);
 426         resource_num = find_next_zero_bit(resource_array, max_resources, *next);
 427         if (resource_num >= max_resources) {
 428                 resource_num = find_first_zero_bit(resource_array, max_resources);
 429                 if (resource_num >= max_resources) {
 430                         spin_unlock_irqrestore(&iwdev->resource_lock, flags);
 431                         return -EOVERFLOW;
 432                 }
 433         }
 434         set_bit(resource_num, resource_array);
 435         *next = resource_num + 1;
 436         if (*next == max_resources)
 437                 *next = 0;
 438         spin_unlock_irqrestore(&iwdev->resource_lock, flags);
 439         *req_resource_num = resource_num;
 440
 441         return 0;
 442 }
 443
 444 /**
 445  * i40iw_is_resource_allocated - detrmine if resource is
 446  * allocated
 447  * @iwdev: device pointer
 448  * @resource_array: resource array for the resource_num
 449  * @resource_num: resource number to check
 450  **/
 451 static inline bool i40iw_is_resource_allocated(struct i40iw_device *iwdev,
 452                                                unsigned long *resource_array,
 453                                                u32 resource_num)
 454 {
 455         bool bit_is_set;
 456         unsigned long flags;
 457
 458         spin_lock_irqsave(&iwdev->resource_lock, flags);
 459
 460         bit_is_set = test_bit(resource_num, resource_array);
 461         spin_unlock_irqrestore(&iwdev->resource_lock, flags);
 462
 463         return bit_is_set;
 464 }
 465
 466 /**
 467  * i40iw_free_resource - free a resource
 468  * @iwdev: device pointer
 469  * @resource_array: resource array for the resource_num
 470  * @resource_num: resource number to free
 471  **/
 472 static inline void i40iw_free_resource(struct i40iw_device *iwdev,
 473                                        unsigned long *resource_array,
 474                                        u32 resource_num)
 475 {
 476         unsigned long flags;
 477
 478         spin_lock_irqsave(&iwdev->resource_lock, flags);
 479         clear_bit(resource_num, resource_array);
 480         spin_unlock_irqrestore(&iwdev->resource_lock, flags);
 481 }
 482
 483 /**
 484  * to_iwhdl - Get the handler from the device pointer
 485  * @iwdev: device pointer
 486  **/
 487 static inline struct i40iw_handler *to_iwhdl(struct i40iw_device *iw_dev)
 488 {
 489         return container_of(iw_dev, struct i40iw_handler, device);
 490 }
 491
 492 struct i40iw_handler *i40iw_find_netdev(struct net_device *netdev);
 493
 494 /**
 495  * iw_init_resources -
 496  */
 497 u32 i40iw_initialize_hw_resources(struct i40iw_device *iwdev);
 498
 499 int i40iw_register_rdma_device(struct i40iw_device *iwdev);
 500 void i40iw_port_ibevent(struct i40iw_device *iwdev);
 501 int i40iw_cm_disconn(struct i40iw_qp *);
 502 void i40iw_cm_disconn_worker(void *);
 503 int mini_cm_recv_pkt(struct i40iw_cm_core *, struct i40iw_device *,
 504                      struct sk_buff *);
 505
 506 enum i40iw_status_code i40iw_handle_cqp_op(struct i40iw_device *iwdev,
 507                                            struct i40iw_cqp_request *cqp_request);
 508 enum i40iw_status_code i40iw_add_mac_addr(struct i40iw_device *iwdev,
 509                                           u8 *mac_addr, u8 *mac_index);
 510 int i40iw_modify_qp(struct ib_qp *, struct ib_qp_attr *, int, struct ib_udata *);
 511
 512 void i40iw_rem_pdusecount(struct i40iw_pd *iwpd, struct i40iw_device *iwdev);
 513 void i40iw_add_pdusecount(struct i40iw_pd *iwpd);
 514 void i40iw_hw_modify_qp(struct i40iw_device *iwdev, struct i40iw_qp *iwqp,
 515                         struct i40iw_modify_qp_info *info, bool wait);
 516
 517 enum i40iw_status_code i40iw_manage_qhash(struct i40iw_device *iwdev,
 518                                           struct i40iw_cm_info *cminfo,
 519                                           enum i40iw_quad_entry_type etype,
 520                                           enum i40iw_quad_hash_manage_type mtype,
 521                                           void *cmnode,
 522                                           bool wait);
 523 void i40iw_receive_ilq(struct i40iw_sc_dev *dev, struct i40iw_puda_buf *rbuf);
 524 void i40iw_free_sqbuf(struct i40iw_sc_dev *dev, void *bufp);
 525 void i40iw_free_qp_resources(struct i40iw_device *iwdev,
 526                              struct i40iw_qp *iwqp,
 527                              u32 qp_num);
 528 enum i40iw_status_code i40iw_obj_aligned_mem(struct i40iw_device *iwdev,
 529                                              struct i40iw_dma_mem *memptr,
 530                                              u32 size, u32 mask);
 531
 532 void i40iw_request_reset(struct i40iw_device *iwdev);
 533 void i40iw_destroy_rdma_device(struct i40iw_ib_device *iwibdev);
 534 void i40iw_setup_cm_core(struct i40iw_device *iwdev);
 535 void i40iw_cleanup_cm_core(struct i40iw_cm_core *cm_core);
 536 void i40iw_process_ceq(struct i40iw_device *, struct i40iw_ceq *iwceq);
 537 void i40iw_process_aeq(struct i40iw_device *);
 538 void i40iw_next_iw_state(struct i40iw_qp *iwqp,
 539                          u8 state, u8 del_hash,
 540                          u8 term, u8 term_len);
 541 int i40iw_send_syn(struct i40iw_cm_node *cm_node, u32 sendack);
 542 struct i40iw_cm_node *i40iw_find_node(struct i40iw_cm_core *cm_core,
 543                                       u16 rem_port,
 544                                       u32 *rem_addr,
 545                                       u16 loc_port,
 546                                       u32 *loc_addr,
 547                                       bool add_refcnt);
 548
 549 enum i40iw_status_code i40iw_hw_flush_wqes(struct i40iw_device *iwdev,
 550                                            struct i40iw_sc_qp *qp,
 551                                            struct i40iw_qp_flush_info *info,
 552                                            bool wait);
 553
 554 void i40iw_copy_ip_ntohl(u32 *dst, __be32 *src);
 555 struct ib_mr *i40iw_reg_phys_mr(struct ib_pd *ib_pd,
 556                                 u64 addr,
 557                                 u64 size,
 558                                 int acc,
 559                                 u64 *iova_start);
 560
 561 int i40iw_inetaddr_event(struct notifier_block *notifier,
 562                          unsigned long event,
 563                          void *ptr);
 564 int i40iw_inet6addr_event(struct notifier_block *notifier,
 565                           unsigned long event,
 566                           void *ptr);
 567 int i40iw_net_event(struct notifier_block *notifier,
 568                     unsigned long event,
 569                     void *ptr);
 570
 571 #endif