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
 117 #define I40IW_MTU_TO_MSS                40
 118 #define I40IW_DEFAULT_MSS               1460
 119
 120 struct i40iw_cqp_compl_info {
 121         u32 op_ret_val;
 122         u16 maj_err_code;
 123         u16 min_err_code;
 124         bool error;
 125         u8 op_code;
 126 };
 127
 128 #define i40iw_pr_err(fmt, args ...) pr_err("%s: "fmt, __func__, ## args)
 129
 130 #define i40iw_pr_info(fmt, args ...) pr_info("%s: " fmt, __func__, ## args)
 131
 132 #define i40iw_pr_warn(fmt, args ...) pr_warn("%s: " fmt, __func__, ## args)
 133
 134 struct i40iw_cqp_request {
 135         struct cqp_commands_info info;
 136         wait_queue_head_t waitq;
 137         struct list_head list;
 138         atomic_t refcount;
 139         void (*callback_fcn)(struct i40iw_cqp_request*, u32);
 140         void *param;
 141         struct i40iw_cqp_compl_info compl_info;
 142         bool waiting;
 143         bool request_done;
 144         bool dynamic;
 145 };
 146
 147 struct i40iw_cqp {
 148         struct i40iw_sc_cqp sc_cqp;
 149         spinlock_t req_lock; /*cqp request list */
 150         wait_queue_head_t waitq;
 151         struct i40iw_dma_mem sq;
 152         struct i40iw_dma_mem host_ctx;
 153         u64 *scratch_array;
 154         struct i40iw_cqp_request *cqp_requests;
 155         struct list_head cqp_avail_reqs;
 156         struct list_head cqp_pending_reqs;
 157 };
 158
 159 struct i40iw_device;
 160
 161 struct i40iw_ccq {
 162         struct i40iw_sc_cq sc_cq;
 163         spinlock_t lock; /* ccq control */
 164         wait_queue_head_t waitq;
 165         struct i40iw_dma_mem mem_cq;
 166         struct i40iw_dma_mem shadow_area;
 167 };
 168
 169 struct i40iw_ceq {
 170         struct i40iw_sc_ceq sc_ceq;
 171         struct i40iw_dma_mem mem;
 172         u32 irq;
 173         u32 msix_idx;
 174         struct i40iw_device *iwdev;
 175         struct tasklet_struct dpc_tasklet;
 176 };
 177
 178 struct i40iw_aeq {
 179         struct i40iw_sc_aeq sc_aeq;
 180         struct i40iw_dma_mem mem;
 181 };
 182
 183 struct i40iw_arp_entry {
 184         u32 ip_addr[4];
 185         u8 mac_addr[ETH_ALEN];
 186 };
 187
 188 enum init_completion_state {
 189         INVALID_STATE = 0,
 190         INITIAL_STATE,
 191         CQP_CREATED,
 192         HMC_OBJS_CREATED,
 193         PBLE_CHUNK_MEM,
 194         CCQ_CREATED,
 195         AEQ_CREATED,
 196         CEQ_CREATED,
 197         ILQ_CREATED,
 198         IEQ_CREATED,
 199         INET_NOTIFIER,
 200         IP_ADDR_REGISTERED,
 201         RDMA_DEV_REGISTERED
 202 };
 203
 204 struct i40iw_msix_vector {
 205         u32 idx;
 206         u32 irq;
 207         u32 cpu_affinity;
 208         u32 ceq_id;
 209 };
 210
 211 #define I40IW_MSIX_TABLE_SIZE   65
 212
 213 struct virtchnl_work {
 214         struct work_struct work;
 215         union {
 216                 struct i40iw_cqp_request *cqp_request;
 217                 struct i40iw_virtchnl_work_info work_info;
 218         };
 219 };
 220
 221 struct i40e_qvlist_info;
 222
 223 struct i40iw_device {
 224         struct i40iw_ib_device *iwibdev;
 225         struct net_device *netdev;
 226         wait_queue_head_t vchnl_waitq;
 227         struct i40iw_sc_dev sc_dev;
 228         struct i40iw_handler *hdl;
 229         struct i40e_info *ldev;
 230         struct i40e_client *client;
 231         struct i40iw_hw hw;
 232         struct i40iw_cm_core cm_core;
 233         unsigned long *mem_resources;
 234         unsigned long *allocated_qps;
 235         unsigned long *allocated_cqs;
 236         unsigned long *allocated_mrs;
 237         unsigned long *allocated_pds;
 238         unsigned long *allocated_arps;
 239         struct i40iw_qp **qp_table;
 240         bool msix_shared;
 241         u32 msix_count;
 242         struct i40iw_msix_vector *iw_msixtbl;
 243         struct i40e_qvlist_info *iw_qvlist;
 244
 245         struct i40iw_hmc_pble_rsrc *pble_rsrc;
 246         struct i40iw_arp_entry *arp_table;
 247         struct i40iw_cqp cqp;
 248         struct i40iw_ccq ccq;
 249         u32 ceqs_count;
 250         struct i40iw_ceq *ceqlist;
 251         struct i40iw_aeq aeq;
 252         u32 arp_table_size;
 253         u32 next_arp_index;
 254         spinlock_t resource_lock; /* hw resource access */
 255         spinlock_t qptable_lock;
 256         u32 vendor_id;
 257         u32 vendor_part_id;
 258         u32 of_device_registered;
 259
 260         u32 device_cap_flags;
 261         unsigned long db_start;
 262         u8 resource_profile;
 263         u8 max_rdma_vfs;
 264         u8 max_enabled_vfs;
 265         u8 max_sge;
 266         u8 iw_status;
 267         u8 send_term_ok;
 268         bool push_mode;         /* Initialized from parameter passed to driver */
 269
 270         /* x710 specific */
 271         struct mutex pbl_mutex;
 272         struct tasklet_struct dpc_tasklet;
 273         struct workqueue_struct *virtchnl_wq;
 274         struct virtchnl_work virtchnl_w[I40IW_MAX_PE_ENABLED_VF_COUNT];
 275         struct i40iw_dma_mem obj_mem;
 276         struct i40iw_dma_mem obj_next;
 277         u8 *hmc_info_mem;
 278         u32 sd_type;
 279         struct workqueue_struct *param_wq;
 280         atomic_t params_busy;
 281         u32 mss;
 282         enum init_completion_state init_state;
 283         u16 mac_ip_table_idx;
 284         atomic_t vchnl_msgs;
 285         u32 max_mr;
 286         u32 max_qp;
 287         u32 max_cq;
 288         u32 max_pd;
 289         u32 next_qp;
 290         u32 next_cq;
 291         u32 next_pd;
 292         u32 max_mr_size;
 293         u32 max_qp_wr;
 294         u32 max_cqe;
 295         u32 mr_stagmask;
 296         u32 mpa_version;
 297         bool dcb;
 298 };
 299
 300 struct i40iw_ib_device {
 301         struct ib_device ibdev;
 302         struct i40iw_device *iwdev;
 303 };
 304
 305 struct i40iw_handler {
 306         struct list_head list;
 307         struct i40e_client *client;
 308         struct i40iw_device device;
 309         struct i40e_info ldev;
 310 };
 311
 312 /**
 313  * to_iwdev - get device
 314  * @ibdev: ib device
 315  **/
 316 static inline struct i40iw_device *to_iwdev(struct ib_device *ibdev)
 317 {
 318         return container_of(ibdev, struct i40iw_ib_device, ibdev)->iwdev;
 319 }
 320
 321 /**
 322  * to_ucontext - get user context
 323  * @ibucontext: ib user context
 324  **/
 325 static inline struct i40iw_ucontext *to_ucontext(struct ib_ucontext *ibucontext)
 326 {
 327         return container_of(ibucontext, struct i40iw_ucontext, ibucontext);
 328 }
 329
 330 /**
 331  * to_iwpd - get protection domain
 332  * @ibpd: ib pd
 333  **/
 334 static inline struct i40iw_pd *to_iwpd(struct ib_pd *ibpd)
 335 {
 336         return container_of(ibpd, struct i40iw_pd, ibpd);
 337 }
 338
 339 /**
 340  * to_iwmr - get device memory region
 341  * @ibdev: ib memory region
 342  **/
 343 static inline struct i40iw_mr *to_iwmr(struct ib_mr *ibmr)
 344 {
 345         return container_of(ibmr, struct i40iw_mr, ibmr);
 346 }
 347
 348 /**
 349  * to_iwmr_from_ibfmr - get device memory region
 350  * @ibfmr: ib fmr
 351  **/
 352 static inline struct i40iw_mr *to_iwmr_from_ibfmr(struct ib_fmr *ibfmr)
 353 {
 354         return container_of(ibfmr, struct i40iw_mr, ibfmr);
 355 }
 356
 357 /**
 358  * to_iwmw - get device memory window
 359  * @ibmw: ib memory window
 360  **/
 361 static inline struct i40iw_mr *to_iwmw(struct ib_mw *ibmw)
 362 {
 363         return container_of(ibmw, struct i40iw_mr, ibmw);
 364 }
 365
 366 /**
 367  * to_iwcq - get completion queue
 368  * @ibcq: ib cqdevice
 369  **/
 370 static inline struct i40iw_cq *to_iwcq(struct ib_cq *ibcq)
 371 {
 372         return container_of(ibcq, struct i40iw_cq, ibcq);
 373 }
 374
 375 /**
 376  * to_iwqp - get device qp
 377  * @ibqp: ib qp
 378  **/
 379 static inline struct i40iw_qp *to_iwqp(struct ib_qp *ibqp)
 380 {
 381         return container_of(ibqp, struct i40iw_qp, ibqp);
 382 }
 383
 384 /* i40iw.c */
 385 void i40iw_add_ref(struct ib_qp *);
 386 void i40iw_rem_ref(struct ib_qp *);
 387 struct ib_qp *i40iw_get_qp(struct ib_device *, int);
 388
 389 void i40iw_flush_wqes(struct i40iw_device *iwdev,
 390                       struct i40iw_qp *qp);
 391
 392 void i40iw_manage_arp_cache(struct i40iw_device *iwdev,
 393                             unsigned char *mac_addr,
 394                             __be32 *ip_addr,
 395                             bool ipv4,
 396                             u32 action);
 397
 398 int i40iw_manage_apbvt(struct i40iw_device *iwdev,
 399                        u16 accel_local_port,
 400                        bool add_port);
 401
 402 struct i40iw_cqp_request *i40iw_get_cqp_request(struct i40iw_cqp *cqp, bool wait);
 403 void i40iw_free_cqp_request(struct i40iw_cqp *cqp, struct i40iw_cqp_request *cqp_request);
 404 void i40iw_put_cqp_request(struct i40iw_cqp *cqp, struct i40iw_cqp_request *cqp_request);
 405
 406 /**
 407  * i40iw_alloc_resource - allocate a resource
 408  * @iwdev: device pointer
 409  * @resource_array: resource bit array:
 410  * @max_resources: maximum resource number
 411  * @req_resources_num: Allocated resource number
 412  * @next: next free id
 413  **/
 414 static inline int i40iw_alloc_resource(struct i40iw_device *iwdev,
 415                                        unsigned long *resource_array,
 416                                        u32 max_resources,
 417                                        u32 *req_resource_num,
 418                                        u32 *next)
 419 {
 420         u32 resource_num;
 421         unsigned long flags;
 422
 423         spin_lock_irqsave(&iwdev->resource_lock, flags);
 424         resource_num = find_next_zero_bit(resource_array, max_resources, *next);
 425         if (resource_num >= max_resources) {
 426                 resource_num = find_first_zero_bit(resource_array, max_resources);
 427                 if (resource_num >= max_resources) {
 428                         spin_unlock_irqrestore(&iwdev->resource_lock, flags);
 429                         return -EOVERFLOW;
 430                 }
 431         }
 432         set_bit(resource_num, resource_array);
 433         *next = resource_num + 1;
 434         if (*next == max_resources)
 435                 *next = 0;
 436         spin_unlock_irqrestore(&iwdev->resource_lock, flags);
 437         *req_resource_num = resource_num;
 438
 439         return 0;
 440 }
 441
 442 /**
 443  * i40iw_is_resource_allocated - detrmine if resource is
 444  * allocated
 445  * @iwdev: device pointer
 446  * @resource_array: resource array for the resource_num
 447  * @resource_num: resource number to check
 448  **/
 449 static inline bool i40iw_is_resource_allocated(struct i40iw_device *iwdev,
 450                                                unsigned long *resource_array,
 451                                                u32 resource_num)
 452 {
 453         bool bit_is_set;
 454         unsigned long flags;
 455
 456         spin_lock_irqsave(&iwdev->resource_lock, flags);
 457
 458         bit_is_set = test_bit(resource_num, resource_array);
 459         spin_unlock_irqrestore(&iwdev->resource_lock, flags);
 460
 461         return bit_is_set;
 462 }
 463
 464 /**
 465  * i40iw_free_resource - free a resource
 466  * @iwdev: device pointer
 467  * @resource_array: resource array for the resource_num
 468  * @resource_num: resource number to free
 469  **/
 470 static inline void i40iw_free_resource(struct i40iw_device *iwdev,
 471                                        unsigned long *resource_array,
 472                                        u32 resource_num)
 473 {
 474         unsigned long flags;
 475
 476         spin_lock_irqsave(&iwdev->resource_lock, flags);
 477         clear_bit(resource_num, resource_array);
 478         spin_unlock_irqrestore(&iwdev->resource_lock, flags);
 479 }
 480
 481 /**
 482  * to_iwhdl - Get the handler from the device pointer
 483  * @iwdev: device pointer
 484  **/
 485 static inline struct i40iw_handler *to_iwhdl(struct i40iw_device *iw_dev)
 486 {
 487         return container_of(iw_dev, struct i40iw_handler, device);
 488 }
 489
 490 struct i40iw_handler *i40iw_find_netdev(struct net_device *netdev);
 491
 492 /**
 493  * iw_init_resources -
 494  */
 495 u32 i40iw_initialize_hw_resources(struct i40iw_device *iwdev);
 496
 497 int i40iw_register_rdma_device(struct i40iw_device *iwdev);
 498 void i40iw_port_ibevent(struct i40iw_device *iwdev);
 499 int i40iw_cm_disconn(struct i40iw_qp *);
 500 void i40iw_cm_disconn_worker(void *);
 501 int mini_cm_recv_pkt(struct i40iw_cm_core *, struct i40iw_device *,
 502                      struct sk_buff *);
 503
 504 enum i40iw_status_code i40iw_handle_cqp_op(struct i40iw_device *iwdev,
 505                                            struct i40iw_cqp_request *cqp_request);
 506 enum i40iw_status_code i40iw_add_mac_addr(struct i40iw_device *iwdev,
 507                                           u8 *mac_addr, u8 *mac_index);
 508 int i40iw_modify_qp(struct ib_qp *, struct ib_qp_attr *, int, struct ib_udata *);
 509
 510 void i40iw_rem_pdusecount(struct i40iw_pd *iwpd, struct i40iw_device *iwdev);
 511 void i40iw_add_pdusecount(struct i40iw_pd *iwpd);
 512 void i40iw_hw_modify_qp(struct i40iw_device *iwdev, struct i40iw_qp *iwqp,
 513                         struct i40iw_modify_qp_info *info, bool wait);
 514
 515 enum i40iw_status_code i40iw_manage_qhash(struct i40iw_device *iwdev,
 516                                           struct i40iw_cm_info *cminfo,
 517                                           enum i40iw_quad_entry_type etype,
 518                                           enum i40iw_quad_hash_manage_type mtype,
 519                                           void *cmnode,
 520                                           bool wait);
 521 void i40iw_receive_ilq(struct i40iw_sc_dev *dev, struct i40iw_puda_buf *rbuf);
 522 void i40iw_free_sqbuf(struct i40iw_sc_dev *dev, void *bufp);
 523 void i40iw_free_qp_resources(struct i40iw_device *iwdev,
 524                              struct i40iw_qp *iwqp,
 525                              u32 qp_num);
 526 enum i40iw_status_code i40iw_obj_aligned_mem(struct i40iw_device *iwdev,
 527                                              struct i40iw_dma_mem *memptr,
 528                                              u32 size, u32 mask);
 529
 530 void i40iw_request_reset(struct i40iw_device *iwdev);
 531 void i40iw_destroy_rdma_device(struct i40iw_ib_device *iwibdev);
 532 void i40iw_setup_cm_core(struct i40iw_device *iwdev);
 533 void i40iw_cleanup_cm_core(struct i40iw_cm_core *cm_core);
 534 void i40iw_process_ceq(struct i40iw_device *, struct i40iw_ceq *iwceq);
 535 void i40iw_process_aeq(struct i40iw_device *);
 536 void i40iw_next_iw_state(struct i40iw_qp *iwqp,
 537                          u8 state, u8 del_hash,
 538                          u8 term, u8 term_len);
 539 int i40iw_send_syn(struct i40iw_cm_node *cm_node, u32 sendack);
 540 struct i40iw_cm_node *i40iw_find_node(struct i40iw_cm_core *cm_core,
 541                                       u16 rem_port,
 542                                       u32 *rem_addr,
 543                                       u16 loc_port,
 544                                       u32 *loc_addr,
 545                                       bool add_refcnt);
 546
 547 enum i40iw_status_code i40iw_hw_flush_wqes(struct i40iw_device *iwdev,
 548                                            struct i40iw_sc_qp *qp,
 549                                            struct i40iw_qp_flush_info *info,
 550                                            bool wait);
 551
 552 void i40iw_copy_ip_ntohl(u32 *dst, u32 *src);
 553 struct ib_mr *i40iw_reg_phys_mr(struct ib_pd *ib_pd,
 554                                 u64 addr,
 555                                 u64 size,
 556                                 int acc,
 557                                 u64 *iova_start);
 558
 559 int i40iw_inetaddr_event(struct notifier_block *notifier,
 560                          unsigned long event,
 561                          void *ptr);
 562 int i40iw_inet6addr_event(struct notifier_block *notifier,
 563                           unsigned long event,
 564                           void *ptr);
 565 int i40iw_net_event(struct notifier_block *notifier,
 566                     unsigned long event,
 567                     void *ptr);
 568
 569 #endif