drivers/infiniband/hw/ehca/ehca_classes.h

   1 /*
   2  *  IBM eServer eHCA Infiniband device driver for Linux on POWER
   3  *
   4  *  Struct definition for eHCA internal structures
   5  *
   6  *  Authors: Heiko J Schick <schickhj@de.ibm.com>
   7  *           Christoph Raisch <raisch@de.ibm.com>
   8  *           Joachim Fenkes <fenkes@de.ibm.com>
   9  *
  10  *  Copyright (c) 2005 IBM Corporation
  11  *
  12  *  All rights reserved.
  13  *
  14  *  This source code is distributed under a dual license of GPL v2.0 and OpenIB
  15  *  BSD.
  16  *
  17  * OpenIB BSD License
  18  *
  19  * Redistribution and use in source and binary forms, with or without
  20  * modification, are permitted provided that the following conditions are met:
  21  *
  22  * Redistributions of source code must retain the above copyright notice, this
  23  * list of conditions and the following disclaimer.
  24  *
  25  * Redistributions in binary form must reproduce the above copyright notice,
  26  * this list of conditions and the following disclaimer in the documentation
  27  * and/or other materials
  28  * provided with the distribution.
  29  *
  30  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  31  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  32  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  33  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  34  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  35  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  36  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  37  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
  38  * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  39  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  40  * POSSIBILITY OF SUCH DAMAGE.
  41  */
  42
  43 #ifndef __EHCA_CLASSES_H__
  44 #define __EHCA_CLASSES_H__
  45
  46
  47 struct ehca_module;
  48 struct ehca_qp;
  49 struct ehca_cq;
  50 struct ehca_eq;
  51 struct ehca_mr;
  52 struct ehca_mw;
  53 struct ehca_pd;
  54 struct ehca_av;
  55
  56 #include <linux/wait.h>
  57
  58 #include <rdma/ib_verbs.h>
  59 #include <rdma/ib_user_verbs.h>
  60
  61 #ifdef CONFIG_PPC64
  62 #include "ehca_classes_pSeries.h"
  63 #endif
  64 #include "ipz_pt_fn.h"
  65 #include "ehca_qes.h"
  66 #include "ehca_irq.h"
  67
  68 #define EHCA_EQE_CACHE_SIZE 20
  69
  70 struct ehca_eqe_cache_entry {
  71         struct ehca_eqe *eqe;
  72         struct ehca_cq *cq;
  73 };
  74
  75 struct ehca_eq {
  76         u32 length;
  77         struct ipz_queue ipz_queue;
  78         struct ipz_eq_handle ipz_eq_handle;
  79         struct work_struct work;
  80         struct h_galpas galpas;
  81         int is_initialized;
  82         struct ehca_pfeq pf;
  83         spinlock_t spinlock;
  84         struct tasklet_struct interrupt_task;
  85         u32 ist;
  86         spinlock_t irq_spinlock;
  87         struct ehca_eqe_cache_entry eqe_cache[EHCA_EQE_CACHE_SIZE];
  88 };
  89
  90 struct ehca_sma_attr {
  91         u16 lid, lmc, sm_sl, sm_lid;
  92         u16 pkey_tbl_len, pkeys[16];
  93 };
  94
  95 struct ehca_sport {
  96         struct ib_cq *ibcq_aqp1;
  97         struct ib_qp *ibqp_aqp1;
  98         enum ib_rate  rate;
  99         enum ib_port_state port_state;
 100         struct ehca_sma_attr saved_attr;
 101 };
 102
 103 struct ehca_shca {
 104         struct ib_device ib_device;
 105         struct ibmebus_dev *ibmebus_dev;
 106         u8 num_ports;
 107         int hw_level;
 108         struct list_head shca_list;
 109         struct ipz_adapter_handle ipz_hca_handle;
 110         struct ehca_sport sport[2];
 111         struct ehca_eq eq;
 112         struct ehca_eq neq;
 113         struct ehca_mr *maxmr;
 114         struct ehca_pd *pd;
 115         struct h_galpas galpas;
 116         struct mutex modify_mutex;
 117         u64 hca_cap;
 118         int max_mtu;
 119 };
 120
 121 struct ehca_pd {
 122         struct ib_pd ib_pd;
 123         struct ipz_pd fw_pd;
 124         u32 ownpid;
 125 };
 126
 127 enum ehca_ext_qp_type {
 128         EQPT_NORMAL    = 0,
 129         EQPT_LLQP      = 1,
 130         EQPT_SRQBASE   = 2,
 131         EQPT_SRQ       = 3,
 132 };
 133
 134 struct ehca_qp {
 135         union {
 136                 struct ib_qp ib_qp;
 137                 struct ib_srq ib_srq;
 138         };
 139         u32 qp_type;
 140         enum ehca_ext_qp_type ext_type;
 141         struct ipz_queue ipz_squeue;
 142         struct ipz_queue ipz_rqueue;
 143         struct h_galpas galpas;
 144         u32 qkey;
 145         u32 real_qp_num;
 146         u32 token;
 147         spinlock_t spinlock_s;
 148         spinlock_t spinlock_r;
 149         u32 sq_max_inline_data_size;
 150         struct ipz_qp_handle ipz_qp_handle;
 151         struct ehca_pfqp pf;
 152         struct ib_qp_init_attr init_attr;
 153         struct ehca_cq *send_cq;
 154         struct ehca_cq *recv_cq;
 155         unsigned int sqerr_purgeflag;
 156         struct hlist_node list_entries;
 157         /* mmap counter for resources mapped into user space */
 158         u32 mm_count_squeue;
 159         u32 mm_count_rqueue;
 160         u32 mm_count_galpa;
 161 };
 162
 163 #define IS_SRQ(qp) (qp->ext_type == EQPT_SRQ)
 164 #define HAS_SQ(qp) (qp->ext_type != EQPT_SRQ)
 165 #define HAS_RQ(qp) (qp->ext_type != EQPT_SRQBASE)
 166
 167 /* must be power of 2 */
 168 #define QP_HASHTAB_LEN 8
 169
 170 struct ehca_cq {
 171         struct ib_cq ib_cq;
 172         struct ipz_queue ipz_queue;
 173         struct h_galpas galpas;
 174         spinlock_t spinlock;
 175         u32 cq_number;
 176         u32 token;
 177         u32 nr_of_entries;
 178         struct ipz_cq_handle ipz_cq_handle;
 179         struct ehca_pfcq pf;
 180         spinlock_t cb_lock;
 181         struct hlist_head qp_hashtab[QP_HASHTAB_LEN];
 182         struct list_head entry;
 183         u32 nr_callbacks;   /* #events assigned to cpu by scaling code */
 184         atomic_t nr_events; /* #events seen */
 185         wait_queue_head_t wait_completion;
 186         spinlock_t task_lock;
 187         u32 ownpid;
 188         /* mmap counter for resources mapped into user space */
 189         u32 mm_count_queue;
 190         u32 mm_count_galpa;
 191 };
 192
 193 enum ehca_mr_flag {
 194         EHCA_MR_FLAG_FMR = 0x80000000,   /* FMR, created with ehca_alloc_fmr */
 195         EHCA_MR_FLAG_MAXMR = 0x40000000, /* max-MR                           */
 196 };
 197
 198 struct ehca_mr {
 199         union {
 200                 struct ib_mr ib_mr;     /* must always be first in ehca_mr */
 201                 struct ib_fmr ib_fmr;   /* must always be first in ehca_mr */
 202         } ib;
 203         struct ib_umem *umem;
 204         spinlock_t mrlock;
 205
 206         enum ehca_mr_flag flags;
 207         u32 num_kpages;         /* number of kernel pages */
 208         u32 num_hwpages;        /* number of hw pages to form MR */
 209         int acl;                /* ACL (stored here for usage in reregister) */
 210         u64 *start;             /* virtual start address (stored here for */
 211                                 /* usage in reregister) */
 212         u64 size;               /* size (stored here for usage in reregister) */
 213         u32 fmr_page_size;      /* page size for FMR */
 214         u32 fmr_max_pages;      /* max pages for FMR */
 215         u32 fmr_max_maps;       /* max outstanding maps for FMR */
 216         u32 fmr_map_cnt;        /* map counter for FMR */
 217         /* fw specific data */
 218         struct ipz_mrmw_handle ipz_mr_handle;   /* MR handle for h-calls */
 219         struct h_galpas galpas;
 220 };
 221
 222 struct ehca_mw {
 223         struct ib_mw ib_mw;     /* gen2 mw, must always be first in ehca_mw */
 224         spinlock_t mwlock;
 225
 226         u8 never_bound;         /* indication MW was never bound */
 227         struct ipz_mrmw_handle ipz_mw_handle;   /* MW handle for h-calls */
 228         struct h_galpas galpas;
 229 };
 230
 231 enum ehca_mr_pgi_type {
 232         EHCA_MR_PGI_PHYS   = 1,  /* type of ehca_reg_phys_mr,
 233                                   * ehca_rereg_phys_mr,
 234                                   * ehca_reg_internal_maxmr */
 235         EHCA_MR_PGI_USER   = 2,  /* type of ehca_reg_user_mr */
 236         EHCA_MR_PGI_FMR    = 3   /* type of ehca_map_phys_fmr */
 237 };
 238
 239 struct ehca_mr_pginfo {
 240         enum ehca_mr_pgi_type type;
 241         u64 num_kpages;
 242         u64 kpage_cnt;
 243         u64 num_hwpages;     /* number of hw pages */
 244         u64 hwpage_cnt;      /* counter for hw pages */
 245         u64 next_hwpage;     /* next hw page in buffer/chunk/listelem */
 246
 247         union {
 248                 struct { /* type EHCA_MR_PGI_PHYS section */
 249                         int num_phys_buf;
 250                         struct ib_phys_buf *phys_buf_array;
 251                         u64 next_buf;
 252                 } phy;
 253                 struct { /* type EHCA_MR_PGI_USER section */
 254                         struct ib_umem *region;
 255                         struct ib_umem_chunk *next_chunk;
 256                         u64 next_nmap;
 257                 } usr;
 258                 struct { /* type EHCA_MR_PGI_FMR section */
 259                         u64 fmr_pgsize;
 260                         u64 *page_list;
 261                         u64 next_listelem;
 262                 } fmr;
 263         } u;
 264 };
 265
 266 /* output parameters for MR/FMR hipz calls */
 267 struct ehca_mr_hipzout_parms {
 268         struct ipz_mrmw_handle handle;
 269         u32 lkey;
 270         u32 rkey;
 271         u64 len;
 272         u64 vaddr;
 273         u32 acl;
 274 };
 275
 276 /* output parameters for MW hipz calls */
 277 struct ehca_mw_hipzout_parms {
 278         struct ipz_mrmw_handle handle;
 279         u32 rkey;
 280 };
 281
 282 struct ehca_av {
 283         struct ib_ah ib_ah;
 284         struct ehca_ud_av av;
 285 };
 286
 287 struct ehca_ucontext {
 288         struct ib_ucontext ib_ucontext;
 289 };
 290
 291 int ehca_init_pd_cache(void);
 292 void ehca_cleanup_pd_cache(void);
 293 int ehca_init_cq_cache(void);
 294 void ehca_cleanup_cq_cache(void);
 295 int ehca_init_qp_cache(void);
 296 void ehca_cleanup_qp_cache(void);
 297 int ehca_init_av_cache(void);
 298 void ehca_cleanup_av_cache(void);
 299 int ehca_init_mrmw_cache(void);
 300 void ehca_cleanup_mrmw_cache(void);
 301
 302 extern rwlock_t ehca_qp_idr_lock;
 303 extern rwlock_t ehca_cq_idr_lock;
 304 extern struct idr ehca_qp_idr;
 305 extern struct idr ehca_cq_idr;
 306
 307 extern int ehca_static_rate;
 308 extern int ehca_port_act_time;
 309 extern int ehca_use_hp_mr;
 310 extern int ehca_scaling_code;
 311
 312 struct ipzu_queue_resp {
 313         u32 qe_size;      /* queue entry size */
 314         u32 act_nr_of_sg;
 315         u32 queue_length; /* queue length allocated in bytes */
 316         u32 pagesize;
 317         u32 toggle_state;
 318         u32 dummy; /* padding for 8 byte alignment */
 319 };
 320
 321 struct ehca_create_cq_resp {
 322         u32 cq_number;
 323         u32 token;
 324         struct ipzu_queue_resp ipz_queue;
 325 };
 326
 327 struct ehca_create_qp_resp {
 328         u32 qp_num;
 329         u32 token;
 330         u32 qp_type;
 331         u32 ext_type;
 332         u32 qkey;
 333         /* qp_num assigned by ehca: sqp0/1 may have got different numbers */
 334         u32 real_qp_num;
 335         u32 dummy; /* padding for 8 byte alignment */
 336         struct ipzu_queue_resp ipz_squeue;
 337         struct ipzu_queue_resp ipz_rqueue;
 338 };
 339
 340 struct ehca_alloc_cq_parms {
 341         u32 nr_cqe;
 342         u32 act_nr_of_entries;
 343         u32 act_pages;
 344         struct ipz_eq_handle eq_handle;
 345 };
 346
 347 enum ehca_service_type {
 348         ST_RC  = 0,
 349         ST_UC  = 1,
 350         ST_RD  = 2,
 351         ST_UD  = 3,
 352 };
 353
 354 enum ehca_ll_comp_flags {
 355         LLQP_SEND_COMP = 0x20,
 356         LLQP_RECV_COMP = 0x40,
 357         LLQP_COMP_MASK = 0x60,
 358 };
 359
 360 struct ehca_alloc_qp_parms {
 361 /* input parameters */
 362         enum ehca_service_type servicetype;
 363         int sigtype;
 364         enum ehca_ext_qp_type ext_type;
 365         enum ehca_ll_comp_flags ll_comp_flags;
 366
 367         int max_send_wr, max_recv_wr;
 368         int max_send_sge, max_recv_sge;
 369         int ud_av_l_key_ctl;
 370
 371         u32 token;
 372         struct ipz_eq_handle eq_handle;
 373         struct ipz_pd pd;
 374         struct ipz_cq_handle send_cq_handle, recv_cq_handle;
 375
 376         u32 srq_qpn, srq_token, srq_limit;
 377
 378 /* output parameters */
 379         u32 real_qp_num;
 380         struct ipz_qp_handle qp_handle;
 381         struct h_galpas galpas;
 382
 383         u16 act_nr_send_wqes;
 384         u16 act_nr_recv_wqes;
 385         u8  act_nr_recv_sges;
 386         u8  act_nr_send_sges;
 387
 388         u32 nr_rq_pages;
 389         u32 nr_sq_pages;
 390 };
 391
 392 int ehca_cq_assign_qp(struct ehca_cq *cq, struct ehca_qp *qp);
 393 int ehca_cq_unassign_qp(struct ehca_cq *cq, unsigned int qp_num);
 394 struct ehca_qp *ehca_cq_get_qp(struct ehca_cq *cq, int qp_num);
 395
 396 #endif