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  *
   9  *  Copyright (c) 2005 IBM Corporation
  10  *
  11  *  All rights reserved.
  12  *
  13  *  This source code is distributed under a dual license of GPL v2.0 and OpenIB
  14  *  BSD.
  15  *
  16  * OpenIB BSD License
  17  *
  18  * Redistribution and use in source and binary forms, with or without
  19  * modification, are permitted provided that the following conditions are met:
  20  *
  21  * Redistributions of source code must retain the above copyright notice, this
  22  * list of conditions and the following disclaimer.
  23  *
  24  * Redistributions in binary form must reproduce the above copyright notice,
  25  * this list of conditions and the following disclaimer in the documentation
  26  * and/or other materials
  27  * provided with the distribution.
  28  *
  29  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  30  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  31  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  32  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  33  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  34  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  35  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  36  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
  37  * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  38  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  39  * POSSIBILITY OF SUCH DAMAGE.
  40  */
  41
  42 #ifndef __EHCA_CLASSES_H__
  43 #define __EHCA_CLASSES_H__
  44
  45
  46 struct ehca_module;
  47 struct ehca_qp;
  48 struct ehca_cq;
  49 struct ehca_eq;
  50 struct ehca_mr;
  51 struct ehca_mw;
  52 struct ehca_pd;
  53 struct ehca_av;
  54
  55 #include <linux/wait.h>
  56
  57 #include <rdma/ib_verbs.h>
  58 #include <rdma/ib_user_verbs.h>
  59
  60 #ifdef CONFIG_PPC64
  61 #include "ehca_classes_pSeries.h"
  62 #endif
  63 #include "ipz_pt_fn.h"
  64 #include "ehca_qes.h"
  65 #include "ehca_irq.h"
  66
  67 #define EHCA_EQE_CACHE_SIZE 20
  68
  69 struct ehca_eqe_cache_entry {
  70         struct ehca_eqe *eqe;
  71         struct ehca_cq *cq;
  72 };
  73
  74 struct ehca_eq {
  75         u32 length;
  76         struct ipz_queue ipz_queue;
  77         struct ipz_eq_handle ipz_eq_handle;
  78         struct work_struct work;
  79         struct h_galpas galpas;
  80         int is_initialized;
  81         struct ehca_pfeq pf;
  82         spinlock_t spinlock;
  83         struct tasklet_struct interrupt_task;
  84         u32 ist;
  85         spinlock_t irq_spinlock;
  86         struct ehca_eqe_cache_entry eqe_cache[EHCA_EQE_CACHE_SIZE];
  87 };
  88
  89 struct ehca_sport {
  90         struct ib_cq *ibcq_aqp1;
  91         struct ib_qp *ibqp_aqp1;
  92         enum ib_rate  rate;
  93         enum ib_port_state port_state;
  94 };
  95
  96 struct ehca_shca {
  97         struct ib_device ib_device;
  98         struct ibmebus_dev *ibmebus_dev;
  99         u8 num_ports;
 100         int hw_level;
 101         struct list_head shca_list;
 102         struct ipz_adapter_handle ipz_hca_handle;
 103         struct ehca_sport sport[2];
 104         struct ehca_eq eq;
 105         struct ehca_eq neq;
 106         struct ehca_mr *maxmr;
 107         struct ehca_pd *pd;
 108         struct h_galpas galpas;
 109         struct mutex modify_mutex;
 110 };
 111
 112 struct ehca_pd {
 113         struct ib_pd ib_pd;
 114         struct ipz_pd fw_pd;
 115         u32 ownpid;
 116 };
 117
 118 struct ehca_qp {
 119         struct ib_qp ib_qp;
 120         u32 qp_type;
 121         struct ipz_queue ipz_squeue;
 122         struct ipz_queue ipz_rqueue;
 123         struct h_galpas galpas;
 124         u32 qkey;
 125         u32 real_qp_num;
 126         u32 token;
 127         spinlock_t spinlock_s;
 128         spinlock_t spinlock_r;
 129         u32 sq_max_inline_data_size;
 130         struct ipz_qp_handle ipz_qp_handle;
 131         struct ehca_pfqp pf;
 132         struct ib_qp_init_attr init_attr;
 133         struct ehca_cq *send_cq;
 134         struct ehca_cq *recv_cq;
 135         unsigned int sqerr_purgeflag;
 136         struct hlist_node list_entries;
 137         /* mmap counter for resources mapped into user space */
 138         u32 mm_count_squeue;
 139         u32 mm_count_rqueue;
 140         u32 mm_count_galpa;
 141 };
 142
 143 /* must be power of 2 */
 144 #define QP_HASHTAB_LEN 8
 145
 146 struct ehca_cq {
 147         struct ib_cq ib_cq;
 148         struct ipz_queue ipz_queue;
 149         struct h_galpas galpas;
 150         spinlock_t spinlock;
 151         u32 cq_number;
 152         u32 token;
 153         u32 nr_of_entries;
 154         struct ipz_cq_handle ipz_cq_handle;
 155         struct ehca_pfcq pf;
 156         spinlock_t cb_lock;
 157         struct hlist_head qp_hashtab[QP_HASHTAB_LEN];
 158         struct list_head entry;
 159         u32 nr_callbacks; /* #events assigned to cpu by scaling code */
 160         u32 nr_events;    /* #events seen */
 161         wait_queue_head_t wait_completion;
 162         spinlock_t task_lock;
 163         u32 ownpid;
 164         /* mmap counter for resources mapped into user space */
 165         u32 mm_count_queue;
 166         u32 mm_count_galpa;
 167 };
 168
 169 enum ehca_mr_flag {
 170         EHCA_MR_FLAG_FMR = 0x80000000,   /* FMR, created with ehca_alloc_fmr */
 171         EHCA_MR_FLAG_MAXMR = 0x40000000, /* max-MR                           */
 172 };
 173
 174 struct ehca_mr {
 175         union {
 176                 struct ib_mr ib_mr;     /* must always be first in ehca_mr */
 177                 struct ib_fmr ib_fmr;   /* must always be first in ehca_mr */
 178         } ib;
 179         struct ib_umem *umem;
 180         spinlock_t mrlock;
 181
 182         enum ehca_mr_flag flags;
 183         u32 num_pages;          /* number of MR pages */
 184         u32 num_4k;             /* number of 4k "page" portions to form MR */
 185         int acl;                /* ACL (stored here for usage in reregister) */
 186         u64 *start;             /* virtual start address (stored here for */
 187                                 /* usage in reregister) */
 188         u64 size;               /* size (stored here for usage in reregister) */
 189         u32 fmr_page_size;      /* page size for FMR */
 190         u32 fmr_max_pages;      /* max pages for FMR */
 191         u32 fmr_max_maps;       /* max outstanding maps for FMR */
 192         u32 fmr_map_cnt;        /* map counter for FMR */
 193         /* fw specific data */
 194         struct ipz_mrmw_handle ipz_mr_handle;   /* MR handle for h-calls */
 195         struct h_galpas galpas;
 196         /* data for userspace bridge */
 197         u32 nr_of_pages;
 198         void *pagearray;
 199 };
 200
 201 struct ehca_mw {
 202         struct ib_mw ib_mw;     /* gen2 mw, must always be first in ehca_mw */
 203         spinlock_t mwlock;
 204
 205         u8 never_bound;         /* indication MW was never bound */
 206         struct ipz_mrmw_handle ipz_mw_handle;   /* MW handle for h-calls */
 207         struct h_galpas galpas;
 208 };
 209
 210 enum ehca_mr_pgi_type {
 211         EHCA_MR_PGI_PHYS   = 1,  /* type of ehca_reg_phys_mr,
 212                                   * ehca_rereg_phys_mr,
 213                                   * ehca_reg_internal_maxmr */
 214         EHCA_MR_PGI_USER   = 2,  /* type of ehca_reg_user_mr */
 215         EHCA_MR_PGI_FMR    = 3   /* type of ehca_map_phys_fmr */
 216 };
 217
 218 struct ehca_mr_pginfo {
 219         enum ehca_mr_pgi_type type;
 220         u64 num_pages;
 221         u64 page_cnt;
 222         u64 num_4k;       /* number of 4k "page" portions */
 223         u64 page_4k_cnt;  /* counter for 4k "page" portions */
 224         u64 next_4k;      /* next 4k "page" portion in buffer/chunk/listelem */
 225
 226         /* type EHCA_MR_PGI_PHYS section */
 227         int num_phys_buf;
 228         struct ib_phys_buf *phys_buf_array;
 229         u64 next_buf;
 230
 231         /* type EHCA_MR_PGI_USER section */
 232         struct ib_umem *region;
 233         struct ib_umem_chunk *next_chunk;
 234         u64 next_nmap;
 235
 236         /* type EHCA_MR_PGI_FMR section */
 237         u64 *page_list;
 238         u64 next_listelem;
 239         /* next_4k also used within EHCA_MR_PGI_FMR */
 240 };
 241
 242 /* output parameters for MR/FMR hipz calls */
 243 struct ehca_mr_hipzout_parms {
 244         struct ipz_mrmw_handle handle;
 245         u32 lkey;
 246         u32 rkey;
 247         u64 len;
 248         u64 vaddr;
 249         u32 acl;
 250 };
 251
 252 /* output parameters for MW hipz calls */
 253 struct ehca_mw_hipzout_parms {
 254         struct ipz_mrmw_handle handle;
 255         u32 rkey;
 256 };
 257
 258 struct ehca_av {
 259         struct ib_ah ib_ah;
 260         struct ehca_ud_av av;
 261 };
 262
 263 struct ehca_ucontext {
 264         struct ib_ucontext ib_ucontext;
 265 };
 266
 267 int ehca_init_pd_cache(void);
 268 void ehca_cleanup_pd_cache(void);
 269 int ehca_init_cq_cache(void);
 270 void ehca_cleanup_cq_cache(void);
 271 int ehca_init_qp_cache(void);
 272 void ehca_cleanup_qp_cache(void);
 273 int ehca_init_av_cache(void);
 274 void ehca_cleanup_av_cache(void);
 275 int ehca_init_mrmw_cache(void);
 276 void ehca_cleanup_mrmw_cache(void);
 277
 278 extern spinlock_t ehca_qp_idr_lock;
 279 extern spinlock_t ehca_cq_idr_lock;
 280 extern struct idr ehca_qp_idr;
 281 extern struct idr ehca_cq_idr;
 282
 283 extern int ehca_static_rate;
 284 extern int ehca_port_act_time;
 285 extern int ehca_use_hp_mr;
 286 extern int ehca_scaling_code;
 287
 288 struct ipzu_queue_resp {
 289         u32 qe_size;      /* queue entry size */
 290         u32 act_nr_of_sg;
 291         u32 queue_length; /* queue length allocated in bytes */
 292         u32 pagesize;
 293         u32 toggle_state;
 294         u32 dummy; /* padding for 8 byte alignment */
 295 };
 296
 297 struct ehca_create_cq_resp {
 298         u32 cq_number;
 299         u32 token;
 300         struct ipzu_queue_resp ipz_queue;
 301 };
 302
 303 struct ehca_create_qp_resp {
 304         u32 qp_num;
 305         u32 token;
 306         u32 qp_type;
 307         u32 qkey;
 308         /* qp_num assigned by ehca: sqp0/1 may have got different numbers */
 309         u32 real_qp_num;
 310         u32 dummy; /* padding for 8 byte alignment */
 311         struct ipzu_queue_resp ipz_squeue;
 312         struct ipzu_queue_resp ipz_rqueue;
 313 };
 314
 315 struct ehca_alloc_cq_parms {
 316         u32 nr_cqe;
 317         u32 act_nr_of_entries;
 318         u32 act_pages;
 319         struct ipz_eq_handle eq_handle;
 320 };
 321
 322 struct ehca_alloc_qp_parms {
 323         int servicetype;
 324         int sigtype;
 325         int daqp_ctrl;
 326         int max_send_sge;
 327         int max_recv_sge;
 328         int ud_av_l_key_ctl;
 329
 330         u16 act_nr_send_wqes;
 331         u16 act_nr_recv_wqes;
 332         u8  act_nr_recv_sges;
 333         u8  act_nr_send_sges;
 334
 335         u32 nr_rq_pages;
 336         u32 nr_sq_pages;
 337
 338         struct ipz_eq_handle ipz_eq_handle;
 339         struct ipz_pd pd;
 340 };
 341
 342 int ehca_cq_assign_qp(struct ehca_cq *cq, struct ehca_qp *qp);
 343 int ehca_cq_unassign_qp(struct ehca_cq *cq, unsigned int qp_num);
 344 struct ehca_qp* ehca_cq_get_qp(struct ehca_cq *cq, int qp_num);
 345
 346 #endif