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 <rdma/ib_verbs.h>
  56 #include <rdma/ib_user_verbs.h>
  57
  58 #ifdef CONFIG_PPC64
  59 #include "ehca_classes_pSeries.h"
  60 #endif
  61 #include "ipz_pt_fn.h"
  62 #include "ehca_qes.h"
  63 #include "ehca_irq.h"
  64
  65 #define EHCA_EQE_CACHE_SIZE 20
  66
  67 struct ehca_eqe_cache_entry {
  68         struct ehca_eqe *eqe;
  69         struct ehca_cq *cq;
  70 };
  71
  72 struct ehca_eq {
  73         u32 length;
  74         struct ipz_queue ipz_queue;
  75         struct ipz_eq_handle ipz_eq_handle;
  76         struct work_struct work;
  77         struct h_galpas galpas;
  78         int is_initialized;
  79         struct ehca_pfeq pf;
  80         spinlock_t spinlock;
  81         struct tasklet_struct interrupt_task;
  82         u32 ist;
  83         spinlock_t irq_spinlock;
  84         struct ehca_eqe_cache_entry eqe_cache[EHCA_EQE_CACHE_SIZE];
  85 };
  86
  87 struct ehca_sport {
  88         struct ib_cq *ibcq_aqp1;
  89         struct ib_qp *ibqp_aqp1;
  90         enum ib_rate  rate;
  91         enum ib_port_state port_state;
  92 };
  93
  94 struct ehca_shca {
  95         struct ib_device ib_device;
  96         struct ibmebus_dev *ibmebus_dev;
  97         u8 num_ports;
  98         int hw_level;
  99         struct list_head shca_list;
 100         struct ipz_adapter_handle ipz_hca_handle;
 101         struct ehca_sport sport[2];
 102         struct ehca_eq eq;
 103         struct ehca_eq neq;
 104         struct ehca_mr *maxmr;
 105         struct ehca_pd *pd;
 106         struct h_galpas galpas;
 107 };
 108
 109 struct ehca_pd {
 110         struct ib_pd ib_pd;
 111         struct ipz_pd fw_pd;
 112         u32 ownpid;
 113 };
 114
 115 struct ehca_qp {
 116         struct ib_qp ib_qp;
 117         u32 qp_type;
 118         struct ipz_queue ipz_squeue;
 119         struct ipz_queue ipz_rqueue;
 120         struct h_galpas galpas;
 121         u32 qkey;
 122         u32 real_qp_num;
 123         u32 token;
 124         spinlock_t spinlock_s;
 125         spinlock_t spinlock_r;
 126         u32 sq_max_inline_data_size;
 127         struct ipz_qp_handle ipz_qp_handle;
 128         struct ehca_pfqp pf;
 129         struct ib_qp_init_attr init_attr;
 130         struct ehca_cq *send_cq;
 131         struct ehca_cq *recv_cq;
 132         unsigned int sqerr_purgeflag;
 133         struct hlist_node list_entries;
 134         /* mmap counter for resources mapped into user space */
 135         u32 mm_count_squeue;
 136         u32 mm_count_rqueue;
 137         u32 mm_count_galpa;
 138 };
 139
 140 /* must be power of 2 */
 141 #define QP_HASHTAB_LEN 8
 142
 143 struct ehca_cq {
 144         struct ib_cq ib_cq;
 145         struct ipz_queue ipz_queue;
 146         struct h_galpas galpas;
 147         spinlock_t spinlock;
 148         u32 cq_number;
 149         u32 token;
 150         u32 nr_of_entries;
 151         struct ipz_cq_handle ipz_cq_handle;
 152         struct ehca_pfcq pf;
 153         spinlock_t cb_lock;
 154         struct hlist_head qp_hashtab[QP_HASHTAB_LEN];
 155         struct list_head entry;
 156         u32 nr_callbacks;
 157         spinlock_t task_lock;
 158         u32 ownpid;
 159         /* mmap counter for resources mapped into user space */
 160         u32 mm_count_queue;
 161         u32 mm_count_galpa;
 162 };
 163
 164 enum ehca_mr_flag {
 165         EHCA_MR_FLAG_FMR = 0x80000000,   /* FMR, created with ehca_alloc_fmr */
 166         EHCA_MR_FLAG_MAXMR = 0x40000000, /* max-MR                           */
 167 };
 168
 169 struct ehca_mr {
 170         union {
 171                 struct ib_mr ib_mr;     /* must always be first in ehca_mr */
 172                 struct ib_fmr ib_fmr;   /* must always be first in ehca_mr */
 173         } ib;
 174         spinlock_t mrlock;
 175
 176         enum ehca_mr_flag flags;
 177         u32 num_pages;          /* number of MR pages */
 178         u32 num_4k;             /* number of 4k "page" portions to form MR */
 179         int acl;                /* ACL (stored here for usage in reregister) */
 180         u64 *start;             /* virtual start address (stored here for */
 181                                 /* usage in reregister) */
 182         u64 size;               /* size (stored here for usage in reregister) */
 183         u32 fmr_page_size;      /* page size for FMR */
 184         u32 fmr_max_pages;      /* max pages for FMR */
 185         u32 fmr_max_maps;       /* max outstanding maps for FMR */
 186         u32 fmr_map_cnt;        /* map counter for FMR */
 187         /* fw specific data */
 188         struct ipz_mrmw_handle ipz_mr_handle;   /* MR handle for h-calls */
 189         struct h_galpas galpas;
 190         /* data for userspace bridge */
 191         u32 nr_of_pages;
 192         void *pagearray;
 193 };
 194
 195 struct ehca_mw {
 196         struct ib_mw ib_mw;     /* gen2 mw, must always be first in ehca_mw */
 197         spinlock_t mwlock;
 198
 199         u8 never_bound;         /* indication MW was never bound */
 200         struct ipz_mrmw_handle ipz_mw_handle;   /* MW handle for h-calls */
 201         struct h_galpas galpas;
 202 };
 203
 204 enum ehca_mr_pgi_type {
 205         EHCA_MR_PGI_PHYS   = 1,  /* type of ehca_reg_phys_mr,
 206                                   * ehca_rereg_phys_mr,
 207                                   * ehca_reg_internal_maxmr */
 208         EHCA_MR_PGI_USER   = 2,  /* type of ehca_reg_user_mr */
 209         EHCA_MR_PGI_FMR    = 3   /* type of ehca_map_phys_fmr */
 210 };
 211
 212 struct ehca_mr_pginfo {
 213         enum ehca_mr_pgi_type type;
 214         u64 num_pages;
 215         u64 page_cnt;
 216         u64 num_4k;       /* number of 4k "page" portions */
 217         u64 page_4k_cnt;  /* counter for 4k "page" portions */
 218         u64 next_4k;      /* next 4k "page" portion in buffer/chunk/listelem */
 219
 220         /* type EHCA_MR_PGI_PHYS section */
 221         int num_phys_buf;
 222         struct ib_phys_buf *phys_buf_array;
 223         u64 next_buf;
 224
 225         /* type EHCA_MR_PGI_USER section */
 226         struct ib_umem *region;
 227         struct ib_umem_chunk *next_chunk;
 228         u64 next_nmap;
 229
 230         /* type EHCA_MR_PGI_FMR section */
 231         u64 *page_list;
 232         u64 next_listelem;
 233         /* next_4k also used within EHCA_MR_PGI_FMR */
 234 };
 235
 236 /* output parameters for MR/FMR hipz calls */
 237 struct ehca_mr_hipzout_parms {
 238         struct ipz_mrmw_handle handle;
 239         u32 lkey;
 240         u32 rkey;
 241         u64 len;
 242         u64 vaddr;
 243         u32 acl;
 244 };
 245
 246 /* output parameters for MW hipz calls */
 247 struct ehca_mw_hipzout_parms {
 248         struct ipz_mrmw_handle handle;
 249         u32 rkey;
 250 };
 251
 252 struct ehca_av {
 253         struct ib_ah ib_ah;
 254         struct ehca_ud_av av;
 255 };
 256
 257 struct ehca_ucontext {
 258         struct ib_ucontext ib_ucontext;
 259 };
 260
 261 int ehca_init_pd_cache(void);
 262 void ehca_cleanup_pd_cache(void);
 263 int ehca_init_cq_cache(void);
 264 void ehca_cleanup_cq_cache(void);
 265 int ehca_init_qp_cache(void);
 266 void ehca_cleanup_qp_cache(void);
 267 int ehca_init_av_cache(void);
 268 void ehca_cleanup_av_cache(void);
 269 int ehca_init_mrmw_cache(void);
 270 void ehca_cleanup_mrmw_cache(void);
 271
 272 extern spinlock_t ehca_qp_idr_lock;
 273 extern spinlock_t ehca_cq_idr_lock;
 274 extern struct idr ehca_qp_idr;
 275 extern struct idr ehca_cq_idr;
 276
 277 extern int ehca_static_rate;
 278 extern int ehca_port_act_time;
 279 extern int ehca_use_hp_mr;
 280 extern int ehca_scaling_code;
 281
 282 struct ipzu_queue_resp {
 283         u32 qe_size;      /* queue entry size */
 284         u32 act_nr_of_sg;
 285         u32 queue_length; /* queue length allocated in bytes */
 286         u32 pagesize;
 287         u32 toggle_state;
 288         u32 dummy; /* padding for 8 byte alignment */
 289 };
 290
 291 struct ehca_create_cq_resp {
 292         u32 cq_number;
 293         u32 token;
 294         struct ipzu_queue_resp ipz_queue;
 295 };
 296
 297 struct ehca_create_qp_resp {
 298         u32 qp_num;
 299         u32 token;
 300         u32 qp_type;
 301         u32 qkey;
 302         /* qp_num assigned by ehca: sqp0/1 may have got different numbers */
 303         u32 real_qp_num;
 304         u32 dummy; /* padding for 8 byte alignment */
 305         struct ipzu_queue_resp ipz_squeue;
 306         struct ipzu_queue_resp ipz_rqueue;
 307 };
 308
 309 struct ehca_alloc_cq_parms {
 310         u32 nr_cqe;
 311         u32 act_nr_of_entries;
 312         u32 act_pages;
 313         struct ipz_eq_handle eq_handle;
 314 };
 315
 316 struct ehca_alloc_qp_parms {
 317         int servicetype;
 318         int sigtype;
 319         int daqp_ctrl;
 320         int max_send_sge;
 321         int max_recv_sge;
 322         int ud_av_l_key_ctl;
 323
 324         u16 act_nr_send_wqes;
 325         u16 act_nr_recv_wqes;
 326         u8  act_nr_recv_sges;
 327         u8  act_nr_send_sges;
 328
 329         u32 nr_rq_pages;
 330         u32 nr_sq_pages;
 331
 332         struct ipz_eq_handle ipz_eq_handle;
 333         struct ipz_pd pd;
 334 };
 335
 336 int ehca_cq_assign_qp(struct ehca_cq *cq, struct ehca_qp *qp);
 337 int ehca_cq_unassign_qp(struct ehca_cq *cq, unsigned int qp_num);
 338 struct ehca_qp* ehca_cq_get_qp(struct ehca_cq *cq, int qp_num);
 339
 340 #endif