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 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 #include <linux/mutex.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 #define EHCA_MAX_NUM_QUEUES 0xffff
70
71 struct ehca_eqe_cache_entry {
72 struct ehca_eqe *eqe;
73 struct ehca_cq *cq;
74 };
75
76 struct ehca_eq {
77 u32 length;
78 struct ipz_queue ipz_queue;
79 struct ipz_eq_handle ipz_eq_handle;
80 struct work_struct work;
81 struct h_galpas galpas;
82 int is_initialized;
83 struct ehca_pfeq pf;
84 spinlock_t spinlock;
85 struct tasklet_struct interrupt_task;
86 u32 ist;
87 spinlock_t irq_spinlock;
88 struct ehca_eqe_cache_entry eqe_cache[EHCA_EQE_CACHE_SIZE];
89 };
90
91 struct ehca_sma_attr {
92 u16 lid, lmc, sm_sl, sm_lid;
93 u16 pkey_tbl_len, pkeys[16];
94 };
95
96 struct ehca_sport {
97 struct ib_cq *ibcq_aqp1;
98 struct ib_qp *ibqp_sqp[2];
99 /* lock to serialze modify_qp() calls for sqp in normal
100 * and irq path (when event PORT_ACTIVE is received first time)
101 */
102 spinlock_t mod_sqp_lock;
103 enum ib_port_state port_state;
104 struct ehca_sma_attr saved_attr;
105 u32 pma_qp_nr;
106 };
107
108 #define HCA_CAP_MR_PGSIZE_4K 0x80000000
109 #define HCA_CAP_MR_PGSIZE_64K 0x40000000
110 #define HCA_CAP_MR_PGSIZE_1M 0x20000000
111 #define HCA_CAP_MR_PGSIZE_16M 0x10000000
112
113 struct ehca_shca {
114 struct ib_device ib_device;
115 struct platform_device *ofdev;
116 u8 num_ports;
117 int hw_level;
118 struct list_head shca_list;
119 struct ipz_adapter_handle ipz_hca_handle;
120 struct ehca_sport sport[2];
121 struct ehca_eq eq;
122 struct ehca_eq neq;
123 struct ehca_mr *maxmr;
124 struct ehca_pd *pd;
125 struct h_galpas galpas;
126 struct mutex modify_mutex;
127 u64 hca_cap;
128 /* MR pgsize: bit 0-3 means 4K, 64K, 1M, 16M respectively */
129 u32 hca_cap_mr_pgsize;
130 int max_mtu;
131 int max_num_qps;
132 int max_num_cqs;
133 atomic_t num_cqs;
134 atomic_t num_qps;
135 };
136
137 struct ehca_pd {
138 struct ib_pd ib_pd;
139 struct ipz_pd fw_pd;
140 /* small queue mgmt */
141 struct mutex lock;
142 struct list_head free[2];
143 struct list_head full[2];
144 };
145
146 enum ehca_ext_qp_type {
147 EQPT_NORMAL = 0,
148 EQPT_LLQP = 1,
149 EQPT_SRQBASE = 2,
150 EQPT_SRQ = 3,
151 };
152
153 /* struct to cache modify_qp()'s parms for GSI/SMI qp */
154 struct ehca_mod_qp_parm {
155 int mask;
156 struct ib_qp_attr attr;
157 };
158
159 #define EHCA_MOD_QP_PARM_MAX 4
160
161 #define QMAP_IDX_MASK 0xFFFFULL
162
163 /* struct for tracking if cqes have been reported to the application */
164 struct ehca_qmap_entry {
165 u16 app_wr_id;
166 u8 reported;
167 u8 cqe_req;
168 };
169
170 struct ehca_queue_map {
171 struct ehca_qmap_entry *map;
172 unsigned int entries;
173 unsigned int tail;
174 unsigned int left_to_poll;
175 unsigned int next_wqe_idx; /* Idx to first wqe to be flushed */
176 };
177
178 /* function to calculate the next index for the qmap */
next_index(unsigned int cur_index,unsigned int limit)179 static inline unsigned int next_index(unsigned int cur_index, unsigned int limit)
180 {
181 unsigned int temp = cur_index + 1;
182 return (temp == limit) ? 0 : temp;
183 }
184
185 struct ehca_qp {
186 union {
187 struct ib_qp ib_qp;
188 struct ib_srq ib_srq;
189 };
190 u32 qp_type;
191 enum ehca_ext_qp_type ext_type;
192 enum ib_qp_state state;
193 struct ipz_queue ipz_squeue;
194 struct ehca_queue_map sq_map;
195 struct ipz_queue ipz_rqueue;
196 struct ehca_queue_map rq_map;
197 struct h_galpas galpas;
198 u32 qkey;
199 u32 real_qp_num;
200 u32 token;
201 spinlock_t spinlock_s;
202 spinlock_t spinlock_r;
203 u32 sq_max_inline_data_size;
204 struct ipz_qp_handle ipz_qp_handle;
205 struct ehca_pfqp pf;
206 struct ib_qp_init_attr init_attr;
207 struct ehca_cq *send_cq;
208 struct ehca_cq *recv_cq;
209 unsigned int sqerr_purgeflag;
210 struct hlist_node list_entries;
211 /* array to cache modify_qp()'s parms for GSI/SMI qp */
212 struct ehca_mod_qp_parm *mod_qp_parm;
213 int mod_qp_parm_idx;
214 /* mmap counter for resources mapped into user space */
215 u32 mm_count_squeue;
216 u32 mm_count_rqueue;
217 u32 mm_count_galpa;
218 /* unsolicited ack circumvention */
219 int unsol_ack_circ;
220 int mtu_shift;
221 u32 message_count;
222 u32 packet_count;
223 atomic_t nr_events; /* events seen */
224 wait_queue_head_t wait_completion;
225 int mig_armed;
226 struct list_head sq_err_node;
227 struct list_head rq_err_node;
228 };
229
230 #define IS_SRQ(qp) (qp->ext_type == EQPT_SRQ)
231 #define HAS_SQ(qp) (qp->ext_type != EQPT_SRQ)
232 #define HAS_RQ(qp) (qp->ext_type != EQPT_SRQBASE)
233
234 /* must be power of 2 */
235 #define QP_HASHTAB_LEN 8
236
237 struct ehca_cq {
238 struct ib_cq ib_cq;
239 struct ipz_queue ipz_queue;
240 struct h_galpas galpas;
241 spinlock_t spinlock;
242 u32 cq_number;
243 u32 token;
244 u32 nr_of_entries;
245 struct ipz_cq_handle ipz_cq_handle;
246 struct ehca_pfcq pf;
247 spinlock_t cb_lock;
248 struct hlist_head qp_hashtab[QP_HASHTAB_LEN];
249 struct list_head entry;
250 u32 nr_callbacks; /* #events assigned to cpu by scaling code */
251 atomic_t nr_events; /* #events seen */
252 wait_queue_head_t wait_completion;
253 spinlock_t task_lock;
254 /* mmap counter for resources mapped into user space */
255 u32 mm_count_queue;
256 u32 mm_count_galpa;
257 struct list_head sqp_err_list;
258 struct list_head rqp_err_list;
259 };
260
261 enum ehca_mr_flag {
262 EHCA_MR_FLAG_FMR = 0x80000000, /* FMR, created with ehca_alloc_fmr */
263 EHCA_MR_FLAG_MAXMR = 0x40000000, /* max-MR */
264 };
265
266 struct ehca_mr {
267 union {
268 struct ib_mr ib_mr; /* must always be first in ehca_mr */
269 struct ib_fmr ib_fmr; /* must always be first in ehca_mr */
270 } ib;
271 struct ib_umem *umem;
272 spinlock_t mrlock;
273
274 enum ehca_mr_flag flags;
275 u32 num_kpages; /* number of kernel pages */
276 u32 num_hwpages; /* number of hw pages to form MR */
277 u64 hwpage_size; /* hw page size used for this MR */
278 int acl; /* ACL (stored here for usage in reregister) */
279 u64 *start; /* virtual start address (stored here for */
280 /* usage in reregister) */
281 u64 size; /* size (stored here for usage in reregister) */
282 u32 fmr_page_size; /* page size for FMR */
283 u32 fmr_max_pages; /* max pages for FMR */
284 u32 fmr_max_maps; /* max outstanding maps for FMR */
285 u32 fmr_map_cnt; /* map counter for FMR */
286 /* fw specific data */
287 struct ipz_mrmw_handle ipz_mr_handle; /* MR handle for h-calls */
288 struct h_galpas galpas;
289 };
290
291 struct ehca_mw {
292 struct ib_mw ib_mw; /* gen2 mw, must always be first in ehca_mw */
293 spinlock_t mwlock;
294
295 u8 never_bound; /* indication MW was never bound */
296 struct ipz_mrmw_handle ipz_mw_handle; /* MW handle for h-calls */
297 struct h_galpas galpas;
298 };
299
300 enum ehca_mr_pgi_type {
301 EHCA_MR_PGI_PHYS = 1, /* type of ehca_reg_phys_mr,
302 * ehca_rereg_phys_mr,
303 * ehca_reg_internal_maxmr */
304 EHCA_MR_PGI_USER = 2, /* type of ehca_reg_user_mr */
305 EHCA_MR_PGI_FMR = 3 /* type of ehca_map_phys_fmr */
306 };
307
308 struct ehca_mr_pginfo {
309 enum ehca_mr_pgi_type type;
310 u64 num_kpages;
311 u64 kpage_cnt;
312 u64 hwpage_size; /* hw page size used for this MR */
313 u64 num_hwpages; /* number of hw pages */
314 u64 hwpage_cnt; /* counter for hw pages */
315 u64 next_hwpage; /* next hw page in buffer/chunk/listelem */
316
317 union {
318 struct { /* type EHCA_MR_PGI_PHYS section */
319 int num_phys_buf;
320 struct ib_phys_buf *phys_buf_array;
321 u64 next_buf;
322 } phy;
323 struct { /* type EHCA_MR_PGI_USER section */
324 struct ib_umem *region;
325 struct ib_umem_chunk *next_chunk;
326 u64 next_nmap;
327 } usr;
328 struct { /* type EHCA_MR_PGI_FMR section */
329 u64 fmr_pgsize;
330 u64 *page_list;
331 u64 next_listelem;
332 } fmr;
333 } u;
334 };
335
336 /* output parameters for MR/FMR hipz calls */
337 struct ehca_mr_hipzout_parms {
338 struct ipz_mrmw_handle handle;
339 u32 lkey;
340 u32 rkey;
341 u64 len;
342 u64 vaddr;
343 u32 acl;
344 };
345
346 /* output parameters for MW hipz calls */
347 struct ehca_mw_hipzout_parms {
348 struct ipz_mrmw_handle handle;
349 u32 rkey;
350 };
351
352 struct ehca_av {
353 struct ib_ah ib_ah;
354 struct ehca_ud_av av;
355 };
356
357 struct ehca_ucontext {
358 struct ib_ucontext ib_ucontext;
359 };
360
361 int ehca_init_pd_cache(void);
362 void ehca_cleanup_pd_cache(void);
363 int ehca_init_cq_cache(void);
364 void ehca_cleanup_cq_cache(void);
365 int ehca_init_qp_cache(void);
366 void ehca_cleanup_qp_cache(void);
367 int ehca_init_av_cache(void);
368 void ehca_cleanup_av_cache(void);
369 int ehca_init_mrmw_cache(void);
370 void ehca_cleanup_mrmw_cache(void);
371 int ehca_init_small_qp_cache(void);
372 void ehca_cleanup_small_qp_cache(void);
373
374 extern rwlock_t ehca_qp_idr_lock;
375 extern rwlock_t ehca_cq_idr_lock;
376 extern struct idr ehca_qp_idr;
377 extern struct idr ehca_cq_idr;
378 extern spinlock_t shca_list_lock;
379
380 extern int ehca_static_rate;
381 extern int ehca_port_act_time;
382 extern int ehca_use_hp_mr;
383 extern int ehca_scaling_code;
384 extern int ehca_lock_hcalls;
385 extern int ehca_nr_ports;
386 extern int ehca_max_cq;
387 extern int ehca_max_qp;
388
389 struct ipzu_queue_resp {
390 u32 qe_size; /* queue entry size */
391 u32 act_nr_of_sg;
392 u32 queue_length; /* queue length allocated in bytes */
393 u32 pagesize;
394 u32 toggle_state;
395 u32 offset; /* save offset within a page for small_qp */
396 };
397
398 struct ehca_create_cq_resp {
399 u32 cq_number;
400 u32 token;
401 struct ipzu_queue_resp ipz_queue;
402 u32 fw_handle_ofs;
403 u32 dummy;
404 };
405
406 struct ehca_create_qp_resp {
407 u32 qp_num;
408 u32 token;
409 u32 qp_type;
410 u32 ext_type;
411 u32 qkey;
412 /* qp_num assigned by ehca: sqp0/1 may have got different numbers */
413 u32 real_qp_num;
414 u32 fw_handle_ofs;
415 u32 dummy;
416 struct ipzu_queue_resp ipz_squeue;
417 struct ipzu_queue_resp ipz_rqueue;
418 };
419
420 struct ehca_alloc_cq_parms {
421 u32 nr_cqe;
422 u32 act_nr_of_entries;
423 u32 act_pages;
424 struct ipz_eq_handle eq_handle;
425 };
426
427 enum ehca_service_type {
428 ST_RC = 0,
429 ST_UC = 1,
430 ST_RD = 2,
431 ST_UD = 3,
432 };
433
434 enum ehca_ll_comp_flags {
435 LLQP_SEND_COMP = 0x20,
436 LLQP_RECV_COMP = 0x40,
437 LLQP_COMP_MASK = 0x60,
438 };
439
440 struct ehca_alloc_queue_parms {
441 /* input parameters */
442 int max_wr;
443 int max_sge;
444 int page_size;
445 int is_small;
446
447 /* output parameters */
448 u16 act_nr_wqes;
449 u8 act_nr_sges;
450 u32 queue_size; /* bytes for small queues, pages otherwise */
451 };
452
453 struct ehca_alloc_qp_parms {
454 struct ehca_alloc_queue_parms squeue;
455 struct ehca_alloc_queue_parms rqueue;
456
457 /* input parameters */
458 enum ehca_service_type servicetype;
459 int qp_storage;
460 int sigtype;
461 enum ehca_ext_qp_type ext_type;
462 enum ehca_ll_comp_flags ll_comp_flags;
463 int ud_av_l_key_ctl;
464
465 u32 token;
466 struct ipz_eq_handle eq_handle;
467 struct ipz_pd pd;
468 struct ipz_cq_handle send_cq_handle, recv_cq_handle;
469
470 u32 srq_qpn, srq_token, srq_limit;
471
472 /* output parameters */
473 u32 real_qp_num;
474 struct ipz_qp_handle qp_handle;
475 struct h_galpas galpas;
476 };
477
478 int ehca_cq_assign_qp(struct ehca_cq *cq, struct ehca_qp *qp);
479 int ehca_cq_unassign_qp(struct ehca_cq *cq, unsigned int qp_num);
480 struct ehca_qp *ehca_cq_get_qp(struct ehca_cq *cq, int qp_num);
481
482 #endif
483