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 #include "ehca_classes.h"
  46 #include "ipz_pt_fn.h"
  47
  48 struct ehca_module;
  49 struct ehca_qp;
  50 struct ehca_cq;
  51 struct ehca_eq;
  52 struct ehca_mr;
  53 struct ehca_mw;
  54 struct ehca_pd;
  55 struct ehca_av;
  56
  57 #ifdef CONFIG_PPC64
  58 #include "ehca_classes_pSeries.h"
  59 #endif
  60
  61 #include <rdma/ib_verbs.h>
  62 #include <rdma/ib_user_verbs.h>
  63
  64 #include "ehca_irq.h"
  65
  66 struct ehca_eq {
  67         u32 length;
  68         struct ipz_queue ipz_queue;
  69         struct ipz_eq_handle ipz_eq_handle;
  70         struct work_struct work;
  71         struct h_galpas galpas;
  72         int is_initialized;
  73         struct ehca_pfeq pf;
  74         spinlock_t spinlock;
  75         struct tasklet_struct interrupt_task;
  76         u32 ist;
  77 };
  78
  79 struct ehca_sport {
  80         struct ib_cq *ibcq_aqp1;
  81         struct ib_qp *ibqp_aqp1;
  82         enum ib_rate  rate;
  83         enum ib_port_state port_state;
  84 };
  85
  86 struct ehca_shca {
  87         struct ib_device ib_device;
  88         struct ibmebus_dev *ibmebus_dev;
  89         u8 num_ports;
  90         int hw_level;
  91         struct list_head shca_list;
  92         struct ipz_adapter_handle ipz_hca_handle;
  93         struct ehca_sport sport[2];
  94         struct ehca_eq eq;
  95         struct ehca_eq neq;
  96         struct ehca_mr *maxmr;
  97         struct ehca_pd *pd;
  98         struct h_galpas galpas;
  99 };
 100
 101 struct ehca_pd {
 102         struct ib_pd ib_pd;
 103         struct ipz_pd fw_pd;
 104         u32 ownpid;
 105 };
 106
 107 struct ehca_qp {
 108         struct ib_qp ib_qp;
 109         u32 qp_type;
 110         struct ipz_queue ipz_squeue;
 111         struct ipz_queue ipz_rqueue;
 112         struct h_galpas galpas;
 113         u32 qkey;
 114         u32 real_qp_num;
 115         u32 token;
 116         spinlock_t spinlock_s;
 117         spinlock_t spinlock_r;
 118         u32 sq_max_inline_data_size;
 119         struct ipz_qp_handle ipz_qp_handle;
 120         struct ehca_pfqp pf;
 121         struct ib_qp_init_attr init_attr;
 122         struct ehca_cq *send_cq;
 123         struct ehca_cq *recv_cq;
 124         unsigned int sqerr_purgeflag;
 125         struct hlist_node list_entries;
 126         /* mmap counter for resources mapped into user space */
 127         u32 mm_count_squeue;
 128         u32 mm_count_rqueue;
 129         u32 mm_count_galpa;
 130 };
 131
 132 /* must be power of 2 */
 133 #define QP_HASHTAB_LEN 8
 134
 135 struct ehca_cq {
 136         struct ib_cq ib_cq;
 137         struct ipz_queue ipz_queue;
 138         struct h_galpas galpas;
 139         spinlock_t spinlock;
 140         u32 cq_number;
 141         u32 token;
 142         u32 nr_of_entries;
 143         struct ipz_cq_handle ipz_cq_handle;
 144         struct ehca_pfcq pf;
 145         spinlock_t cb_lock;
 146         struct hlist_head qp_hashtab[QP_HASHTAB_LEN];
 147         struct list_head entry;
 148         u32 nr_callbacks;
 149         spinlock_t task_lock;
 150         u32 ownpid;
 151         /* mmap counter for resources mapped into user space */
 152         u32 mm_count_queue;
 153         u32 mm_count_galpa;
 154 };
 155
 156 enum ehca_mr_flag {
 157         EHCA_MR_FLAG_FMR = 0x80000000,   /* FMR, created with ehca_alloc_fmr */
 158         EHCA_MR_FLAG_MAXMR = 0x40000000, /* max-MR                           */
 159 };
 160
 161 struct ehca_mr {
 162         union {
 163                 struct ib_mr ib_mr;     /* must always be first in ehca_mr */
 164                 struct ib_fmr ib_fmr;   /* must always be first in ehca_mr */
 165         } ib;
 166         spinlock_t mrlock;
 167
 168         enum ehca_mr_flag flags;
 169         u32 num_pages;          /* number of MR pages */
 170         u32 num_4k;             /* number of 4k "page" portions to form MR */
 171         int acl;                /* ACL (stored here for usage in reregister) */
 172         u64 *start;             /* virtual start address (stored here for */
 173                                 /* usage in reregister) */
 174         u64 size;               /* size (stored here for usage in reregister) */
 175         u32 fmr_page_size;      /* page size for FMR */
 176         u32 fmr_max_pages;      /* max pages for FMR */
 177         u32 fmr_max_maps;       /* max outstanding maps for FMR */
 178         u32 fmr_map_cnt;        /* map counter for FMR */
 179         /* fw specific data */
 180         struct ipz_mrmw_handle ipz_mr_handle;   /* MR handle for h-calls */
 181         struct h_galpas galpas;
 182         /* data for userspace bridge */
 183         u32 nr_of_pages;
 184         void *pagearray;
 185 };
 186
 187 struct ehca_mw {
 188         struct ib_mw ib_mw;     /* gen2 mw, must always be first in ehca_mw */
 189         spinlock_t mwlock;
 190
 191         u8 never_bound;         /* indication MW was never bound */
 192         struct ipz_mrmw_handle ipz_mw_handle;   /* MW handle for h-calls */
 193         struct h_galpas galpas;
 194 };
 195
 196 enum ehca_mr_pgi_type {
 197         EHCA_MR_PGI_PHYS   = 1,  /* type of ehca_reg_phys_mr,
 198                                   * ehca_rereg_phys_mr,
 199                                   * ehca_reg_internal_maxmr */
 200         EHCA_MR_PGI_USER   = 2,  /* type of ehca_reg_user_mr */
 201         EHCA_MR_PGI_FMR    = 3   /* type of ehca_map_phys_fmr */
 202 };
 203
 204 struct ehca_mr_pginfo {
 205         enum ehca_mr_pgi_type type;
 206         u64 num_pages;
 207         u64 page_cnt;
 208         u64 num_4k;       /* number of 4k "page" portions */
 209         u64 page_4k_cnt;  /* counter for 4k "page" portions */
 210         u64 next_4k;      /* next 4k "page" portion in buffer/chunk/listelem */
 211
 212         /* type EHCA_MR_PGI_PHYS section */
 213         int num_phys_buf;
 214         struct ib_phys_buf *phys_buf_array;
 215         u64 next_buf;
 216
 217         /* type EHCA_MR_PGI_USER section */
 218         struct ib_umem *region;
 219         struct ib_umem_chunk *next_chunk;
 220         u64 next_nmap;
 221
 222         /* type EHCA_MR_PGI_FMR section */
 223         u64 *page_list;
 224         u64 next_listelem;
 225         /* next_4k also used within EHCA_MR_PGI_FMR */
 226 };
 227
 228 /* output parameters for MR/FMR hipz calls */
 229 struct ehca_mr_hipzout_parms {
 230         struct ipz_mrmw_handle handle;
 231         u32 lkey;
 232         u32 rkey;
 233         u64 len;
 234         u64 vaddr;
 235         u32 acl;
 236 };
 237
 238 /* output parameters for MW hipz calls */
 239 struct ehca_mw_hipzout_parms {
 240         struct ipz_mrmw_handle handle;
 241         u32 rkey;
 242 };
 243
 244 struct ehca_av {
 245         struct ib_ah ib_ah;
 246         struct ehca_ud_av av;
 247 };
 248
 249 struct ehca_ucontext {
 250         struct ib_ucontext ib_ucontext;
 251 };
 252
 253 int ehca_init_pd_cache(void);
 254 void ehca_cleanup_pd_cache(void);
 255 int ehca_init_cq_cache(void);
 256 void ehca_cleanup_cq_cache(void);
 257 int ehca_init_qp_cache(void);
 258 void ehca_cleanup_qp_cache(void);
 259 int ehca_init_av_cache(void);
 260 void ehca_cleanup_av_cache(void);
 261 int ehca_init_mrmw_cache(void);
 262 void ehca_cleanup_mrmw_cache(void);
 263
 264 extern spinlock_t ehca_qp_idr_lock;
 265 extern spinlock_t ehca_cq_idr_lock;
 266 extern struct idr ehca_qp_idr;
 267 extern struct idr ehca_cq_idr;
 268
 269 extern int ehca_static_rate;
 270 extern int ehca_port_act_time;
 271 extern int ehca_use_hp_mr;
 272
 273 struct ipzu_queue_resp {
 274         u32 qe_size;      /* queue entry size */
 275         u32 act_nr_of_sg;
 276         u32 queue_length; /* queue length allocated in bytes */
 277         u32 pagesize;
 278         u32 toggle_state;
 279         u32 dummy; /* padding for 8 byte alignment */
 280 };
 281
 282 struct ehca_create_cq_resp {
 283         u32 cq_number;
 284         u32 token;
 285         struct ipzu_queue_resp ipz_queue;
 286 };
 287
 288 struct ehca_create_qp_resp {
 289         u32 qp_num;
 290         u32 token;
 291         u32 qp_type;
 292         u32 qkey;
 293         /* qp_num assigned by ehca: sqp0/1 may have got different numbers */
 294         u32 real_qp_num;
 295         u32 dummy; /* padding for 8 byte alignment */
 296         struct ipzu_queue_resp ipz_squeue;
 297         struct ipzu_queue_resp ipz_rqueue;
 298 };
 299
 300 struct ehca_alloc_cq_parms {
 301         u32 nr_cqe;
 302         u32 act_nr_of_entries;
 303         u32 act_pages;
 304         struct ipz_eq_handle eq_handle;
 305 };
 306
 307 struct ehca_alloc_qp_parms {
 308         int servicetype;
 309         int sigtype;
 310         int daqp_ctrl;
 311         int max_send_sge;
 312         int max_recv_sge;
 313         int ud_av_l_key_ctl;
 314
 315         u16 act_nr_send_wqes;
 316         u16 act_nr_recv_wqes;
 317         u8  act_nr_recv_sges;
 318         u8  act_nr_send_sges;
 319
 320         u32 nr_rq_pages;
 321         u32 nr_sq_pages;
 322
 323         struct ipz_eq_handle ipz_eq_handle;
 324         struct ipz_pd pd;
 325 };
 326
 327 int ehca_cq_assign_qp(struct ehca_cq *cq, struct ehca_qp *qp);
 328 int ehca_cq_unassign_qp(struct ehca_cq *cq, unsigned int qp_num);
 329 struct ehca_qp* ehca_cq_get_qp(struct ehca_cq *cq, int qp_num);
 330
 331 #endif