ehca_classes.h revision d227fa7288adebe5ba37fa8e4a589c977d4e4a34 
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
46struct ehca_module;
47struct ehca_qp;
48struct ehca_cq;
49struct ehca_eq;
50struct ehca_mr;
51struct ehca_mw;
52struct ehca_pd;
53struct 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
71struct ehca_eqe_cache_entry {
72	struct ehca_eqe *eqe;
73	struct ehca_cq *cq;
74};
75
76struct 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
91struct ehca_sma_attr {
92	u16 lid, lmc, sm_sl, sm_lid;
93	u16 pkey_tbl_len, pkeys[16];
94};
95
96struct 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
113struct ehca_shca {
114	struct ib_device ib_device;
115	struct of_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	atomic_t num_cqs;
132	atomic_t num_qps;
133};
134
135struct ehca_pd {
136	struct ib_pd ib_pd;
137	struct ipz_pd fw_pd;
138	/* small queue mgmt */
139	struct mutex lock;
140	struct list_head free[2];
141	struct list_head full[2];
142};
143
144enum ehca_ext_qp_type {
145	EQPT_NORMAL    = 0,
146	EQPT_LLQP      = 1,
147	EQPT_SRQBASE   = 2,
148	EQPT_SRQ       = 3,
149};
150
151/* struct to cache modify_qp()'s parms for GSI/SMI qp */
152struct ehca_mod_qp_parm {
153	int mask;
154	struct ib_qp_attr attr;
155};
156
157#define EHCA_MOD_QP_PARM_MAX 4
158
159struct ehca_qp {
160	union {
161		struct ib_qp ib_qp;
162		struct ib_srq ib_srq;
163	};
164	u32 qp_type;
165	enum ehca_ext_qp_type ext_type;
166	enum ib_qp_state state;
167	struct ipz_queue ipz_squeue;
168	struct ipz_queue ipz_rqueue;
169	struct h_galpas galpas;
170	u32 qkey;
171	u32 real_qp_num;
172	u32 token;
173	spinlock_t spinlock_s;
174	spinlock_t spinlock_r;
175	u32 sq_max_inline_data_size;
176	struct ipz_qp_handle ipz_qp_handle;
177	struct ehca_pfqp pf;
178	struct ib_qp_init_attr init_attr;
179	struct ehca_cq *send_cq;
180	struct ehca_cq *recv_cq;
181	unsigned int sqerr_purgeflag;
182	struct hlist_node list_entries;
183	/* array to cache modify_qp()'s parms for GSI/SMI qp */
184	struct ehca_mod_qp_parm *mod_qp_parm;
185	int mod_qp_parm_idx;
186	/* mmap counter for resources mapped into user space */
187	u32 mm_count_squeue;
188	u32 mm_count_rqueue;
189	u32 mm_count_galpa;
190	/* unsolicited ack circumvention */
191	int unsol_ack_circ;
192	int mtu_shift;
193	u32 message_count;
194	u32 packet_count;
195};
196
197#define IS_SRQ(qp) (qp->ext_type == EQPT_SRQ)
198#define HAS_SQ(qp) (qp->ext_type != EQPT_SRQ)
199#define HAS_RQ(qp) (qp->ext_type != EQPT_SRQBASE)
200
201/* must be power of 2 */
202#define QP_HASHTAB_LEN 8
203
204struct ehca_cq {
205	struct ib_cq ib_cq;
206	struct ipz_queue ipz_queue;
207	struct h_galpas galpas;
208	spinlock_t spinlock;
209	u32 cq_number;
210	u32 token;
211	u32 nr_of_entries;
212	struct ipz_cq_handle ipz_cq_handle;
213	struct ehca_pfcq pf;
214	spinlock_t cb_lock;
215	struct hlist_head qp_hashtab[QP_HASHTAB_LEN];
216	struct list_head entry;
217	u32 nr_callbacks;   /* #events assigned to cpu by scaling code */
218	atomic_t nr_events; /* #events seen */
219	wait_queue_head_t wait_completion;
220	spinlock_t task_lock;
221	/* mmap counter for resources mapped into user space */
222	u32 mm_count_queue;
223	u32 mm_count_galpa;
224};
225
226enum ehca_mr_flag {
227	EHCA_MR_FLAG_FMR = 0x80000000,	 /* FMR, created with ehca_alloc_fmr */
228	EHCA_MR_FLAG_MAXMR = 0x40000000, /* max-MR                           */
229};
230
231struct ehca_mr {
232	union {
233		struct ib_mr ib_mr;	/* must always be first in ehca_mr */
234		struct ib_fmr ib_fmr;	/* must always be first in ehca_mr */
235	} ib;
236	struct ib_umem *umem;
237	spinlock_t mrlock;
238
239	enum ehca_mr_flag flags;
240	u32 num_kpages;		/* number of kernel pages */
241	u32 num_hwpages;	/* number of hw pages to form MR */
242	u64 hwpage_size;	/* hw page size used for this MR */
243	int acl;		/* ACL (stored here for usage in reregister) */
244	u64 *start;		/* virtual start address (stored here for */
245				/* usage in reregister) */
246	u64 size;		/* size (stored here for usage in reregister) */
247	u32 fmr_page_size;	/* page size for FMR */
248	u32 fmr_max_pages;	/* max pages for FMR */
249	u32 fmr_max_maps;	/* max outstanding maps for FMR */
250	u32 fmr_map_cnt;	/* map counter for FMR */
251	/* fw specific data */
252	struct ipz_mrmw_handle ipz_mr_handle;	/* MR handle for h-calls */
253	struct h_galpas galpas;
254};
255
256struct ehca_mw {
257	struct ib_mw ib_mw;	/* gen2 mw, must always be first in ehca_mw */
258	spinlock_t mwlock;
259
260	u8 never_bound;		/* indication MW was never bound */
261	struct ipz_mrmw_handle ipz_mw_handle;	/* MW handle for h-calls */
262	struct h_galpas galpas;
263};
264
265enum ehca_mr_pgi_type {
266	EHCA_MR_PGI_PHYS   = 1,  /* type of ehca_reg_phys_mr,
267				  * ehca_rereg_phys_mr,
268				  * ehca_reg_internal_maxmr */
269	EHCA_MR_PGI_USER   = 2,  /* type of ehca_reg_user_mr */
270	EHCA_MR_PGI_FMR    = 3   /* type of ehca_map_phys_fmr */
271};
272
273struct ehca_mr_pginfo {
274	enum ehca_mr_pgi_type type;
275	u64 num_kpages;
276	u64 kpage_cnt;
277	u64 hwpage_size;     /* hw page size used for this MR */
278	u64 num_hwpages;     /* number of hw pages */
279	u64 hwpage_cnt;      /* counter for hw pages */
280	u64 next_hwpage;     /* next hw page in buffer/chunk/listelem */
281
282	union {
283		struct { /* type EHCA_MR_PGI_PHYS section */
284			int num_phys_buf;
285			struct ib_phys_buf *phys_buf_array;
286			u64 next_buf;
287		} phy;
288		struct { /* type EHCA_MR_PGI_USER section */
289			struct ib_umem *region;
290			struct ib_umem_chunk *next_chunk;
291			u64 next_nmap;
292		} usr;
293		struct { /* type EHCA_MR_PGI_FMR section */
294			u64 fmr_pgsize;
295			u64 *page_list;
296			u64 next_listelem;
297		} fmr;
298	} u;
299};
300
301/* output parameters for MR/FMR hipz calls */
302struct ehca_mr_hipzout_parms {
303	struct ipz_mrmw_handle handle;
304	u32 lkey;
305	u32 rkey;
306	u64 len;
307	u64 vaddr;
308	u32 acl;
309};
310
311/* output parameters for MW hipz calls */
312struct ehca_mw_hipzout_parms {
313	struct ipz_mrmw_handle handle;
314	u32 rkey;
315};
316
317struct ehca_av {
318	struct ib_ah ib_ah;
319	struct ehca_ud_av av;
320};
321
322struct ehca_ucontext {
323	struct ib_ucontext ib_ucontext;
324};
325
326int ehca_init_pd_cache(void);
327void ehca_cleanup_pd_cache(void);
328int ehca_init_cq_cache(void);
329void ehca_cleanup_cq_cache(void);
330int ehca_init_qp_cache(void);
331void ehca_cleanup_qp_cache(void);
332int ehca_init_av_cache(void);
333void ehca_cleanup_av_cache(void);
334int ehca_init_mrmw_cache(void);
335void ehca_cleanup_mrmw_cache(void);
336int ehca_init_small_qp_cache(void);
337void ehca_cleanup_small_qp_cache(void);
338
339extern rwlock_t ehca_qp_idr_lock;
340extern rwlock_t ehca_cq_idr_lock;
341extern struct idr ehca_qp_idr;
342extern struct idr ehca_cq_idr;
343
344extern int ehca_static_rate;
345extern int ehca_port_act_time;
346extern int ehca_use_hp_mr;
347extern int ehca_scaling_code;
348extern int ehca_lock_hcalls;
349extern int ehca_nr_ports;
350extern int ehca_max_cq;
351extern int ehca_max_qp;
352
353struct ipzu_queue_resp {
354	u32 qe_size;      /* queue entry size */
355	u32 act_nr_of_sg;
356	u32 queue_length; /* queue length allocated in bytes */
357	u32 pagesize;
358	u32 toggle_state;
359	u32 offset; /* save offset within a page for small_qp */
360};
361
362struct ehca_create_cq_resp {
363	u32 cq_number;
364	u32 token;
365	struct ipzu_queue_resp ipz_queue;
366	u32 fw_handle_ofs;
367	u32 dummy;
368};
369
370struct ehca_create_qp_resp {
371	u32 qp_num;
372	u32 token;
373	u32 qp_type;
374	u32 ext_type;
375	u32 qkey;
376	/* qp_num assigned by ehca: sqp0/1 may have got different numbers */
377	u32 real_qp_num;
378	u32 fw_handle_ofs;
379	u32 dummy;
380	struct ipzu_queue_resp ipz_squeue;
381	struct ipzu_queue_resp ipz_rqueue;
382};
383
384struct ehca_alloc_cq_parms {
385	u32 nr_cqe;
386	u32 act_nr_of_entries;
387	u32 act_pages;
388	struct ipz_eq_handle eq_handle;
389};
390
391enum ehca_service_type {
392	ST_RC  = 0,
393	ST_UC  = 1,
394	ST_RD  = 2,
395	ST_UD  = 3,
396};
397
398enum ehca_ll_comp_flags {
399	LLQP_SEND_COMP = 0x20,
400	LLQP_RECV_COMP = 0x40,
401	LLQP_COMP_MASK = 0x60,
402};
403
404struct ehca_alloc_queue_parms {
405	/* input parameters */
406	int max_wr;
407	int max_sge;
408	int page_size;
409	int is_small;
410
411	/* output parameters */
412	u16 act_nr_wqes;
413	u8  act_nr_sges;
414	u32 queue_size; /* bytes for small queues, pages otherwise */
415};
416
417struct ehca_alloc_qp_parms {
418	struct ehca_alloc_queue_parms squeue;
419	struct ehca_alloc_queue_parms rqueue;
420
421	/* input parameters */
422	enum ehca_service_type servicetype;
423	int qp_storage;
424	int sigtype;
425	enum ehca_ext_qp_type ext_type;
426	enum ehca_ll_comp_flags ll_comp_flags;
427	int ud_av_l_key_ctl;
428
429	u32 token;
430	struct ipz_eq_handle eq_handle;
431	struct ipz_pd pd;
432	struct ipz_cq_handle send_cq_handle, recv_cq_handle;
433
434	u32 srq_qpn, srq_token, srq_limit;
435
436	/* output parameters */
437	u32 real_qp_num;
438	struct ipz_qp_handle qp_handle;
439	struct h_galpas galpas;
440};
441
442int ehca_cq_assign_qp(struct ehca_cq *cq, struct ehca_qp *qp);
443int ehca_cq_unassign_qp(struct ehca_cq *cq, unsigned int qp_num);
444struct ehca_qp *ehca_cq_get_qp(struct ehca_cq *cq, int qp_num);
445
446#endif
447