1/*
2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
4 * Copyright (c) 2005, 2006 Cisco Systems. All rights reserved.
5 * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
6 * Copyright (c) 2004 Voltaire, Inc. All rights reserved.
7 *
8 * This software is available to you under a choice of one of two
9 * licenses. You may choose to be licensed under the terms of the GNU
10 * General Public License (GPL) Version 2, available from the file
11 * COPYING in the main directory of this source tree, or the
12 * OpenIB.org BSD license below:
13 *
14 * Redistribution and use in source and binary forms, with or
15 * without modification, are permitted provided that the following
16 * conditions are met:
17 *
18 * - Redistributions of source code must retain the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer.
21 *
22 * - Redistributions in binary form must reproduce the above
23 * copyright notice, this list of conditions and the following
24 * disclaimer in the documentation and/or other materials
25 * provided with the distribution.
26 *
27 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
28 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
29 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
30 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
31 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
32 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
33 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
34 * SOFTWARE.
35 */
36
37#ifndef MTHCA_DEV_H
38#define MTHCA_DEV_H
39
40#include <linux/spinlock.h>
41#include <linux/kernel.h>
42#include <linux/pci.h>
43#include <linux/dma-mapping.h>
44#include <linux/timer.h>
45#include <linux/mutex.h>
46#include <linux/list.h>
47#include <linux/semaphore.h>
48
49#include "mthca_provider.h"
50#include "mthca_doorbell.h"
51
52#define DRV_NAME "ib_mthca"
53#define PFX DRV_NAME ": "
54#define DRV_VERSION "1.0"
55#define DRV_RELDATE "April 4, 2008"
56
57enum {
58 MTHCA_FLAG_DDR_HIDDEN = 1 << 1,
59 MTHCA_FLAG_SRQ = 1 << 2,
60 MTHCA_FLAG_MSI_X = 1 << 3,
61 MTHCA_FLAG_NO_LAM = 1 << 4,
62 MTHCA_FLAG_FMR = 1 << 5,
63 MTHCA_FLAG_MEMFREE = 1 << 6,
64 MTHCA_FLAG_PCIE = 1 << 7,
65 MTHCA_FLAG_SINAI_OPT = 1 << 8
66};
67
68enum {
69 MTHCA_MAX_PORTS = 2
70};
71
72enum {
73 MTHCA_BOARD_ID_LEN = 64
74};
75
76enum {
77 MTHCA_EQ_CONTEXT_SIZE = 0x40,
78 MTHCA_CQ_CONTEXT_SIZE = 0x40,
79 MTHCA_QP_CONTEXT_SIZE = 0x200,
80 MTHCA_RDB_ENTRY_SIZE = 0x20,
81 MTHCA_AV_SIZE = 0x20,
82 MTHCA_MGM_ENTRY_SIZE = 0x100,
83
84 /* Arbel FW gives us these, but we need them for Tavor */
85 MTHCA_MPT_ENTRY_SIZE = 0x40,
86 MTHCA_MTT_SEG_SIZE = 0x40,
87
88 MTHCA_QP_PER_MGM = 4 * (MTHCA_MGM_ENTRY_SIZE / 16 - 2)
89};
90
91enum {
92 MTHCA_EQ_CMD,
93 MTHCA_EQ_ASYNC,
94 MTHCA_EQ_COMP,
95 MTHCA_NUM_EQ
96};
97
98enum {
99 MTHCA_OPCODE_NOP = 0x00,
100 MTHCA_OPCODE_RDMA_WRITE = 0x08,
101 MTHCA_OPCODE_RDMA_WRITE_IMM = 0x09,
102 MTHCA_OPCODE_SEND = 0x0a,
103 MTHCA_OPCODE_SEND_IMM = 0x0b,
104 MTHCA_OPCODE_RDMA_READ = 0x10,
105 MTHCA_OPCODE_ATOMIC_CS = 0x11,
106 MTHCA_OPCODE_ATOMIC_FA = 0x12,
107 MTHCA_OPCODE_BIND_MW = 0x18,
108};
109
110enum {
111 MTHCA_CMD_USE_EVENTS = 1 << 0,
112 MTHCA_CMD_POST_DOORBELLS = 1 << 1
113};
114
115enum {
116 MTHCA_CMD_NUM_DBELL_DWORDS = 8
117};
118
119struct mthca_cmd {
120 struct dma_pool *pool;
121 struct mutex hcr_mutex;
122 struct semaphore poll_sem;
123 struct semaphore event_sem;
124 int max_cmds;
125 spinlock_t context_lock;
126 int free_head;
127 struct mthca_cmd_context *context;
128 u16 token_mask;
129 u32 flags;
130 void __iomem *dbell_map;
131 u16 dbell_offsets[MTHCA_CMD_NUM_DBELL_DWORDS];
132};
133
134struct mthca_limits {
135 int num_ports;
136 int vl_cap;
137 int mtu_cap;
138 int gid_table_len;
139 int pkey_table_len;
140 int local_ca_ack_delay;
141 int num_uars;
142 int max_sg;
143 int num_qps;
144 int max_wqes;
145 int max_desc_sz;
146 int max_qp_init_rdma;
147 int reserved_qps;
148 int num_srqs;
149 int max_srq_wqes;
150 int max_srq_sge;
151 int reserved_srqs;
152 int num_eecs;
153 int reserved_eecs;
154 int num_cqs;
155 int max_cqes;
156 int reserved_cqs;
157 int num_eqs;
158 int reserved_eqs;
159 int num_mpts;
160 int num_mtt_segs;
161 int mtt_seg_size;
162 int fmr_reserved_mtts;
163 int reserved_mtts;
164 int reserved_mrws;
165 int reserved_uars;
166 int num_mgms;
167 int num_amgms;
168 int reserved_mcgs;
169 int num_pds;
170 int reserved_pds;
171 u32 page_size_cap;
172 u32 flags;
173 u16 stat_rate_support;
174 u8 port_width_cap;
175};
176
177struct mthca_alloc {
178 u32 last;
179 u32 top;
180 u32 max;
181 u32 mask;
182 spinlock_t lock;
183 unsigned long *table;
184};
185
186struct mthca_array {
187 struct {
188 void **page;
189 int used;
190 } *page_list;
191};
192
193struct mthca_uar_table {
194 struct mthca_alloc alloc;
195 u64 uarc_base;
196 int uarc_size;
197};
198
199struct mthca_pd_table {
200 struct mthca_alloc alloc;
201};
202
203struct mthca_buddy {
204 unsigned long **bits;
205 int *num_free;
206 int max_order;
207 spinlock_t lock;
208};
209
210struct mthca_mr_table {
211 struct mthca_alloc mpt_alloc;
212 struct mthca_buddy mtt_buddy;
213 struct mthca_buddy *fmr_mtt_buddy;
214 u64 mtt_base;
215 u64 mpt_base;
216 struct mthca_icm_table *mtt_table;
217 struct mthca_icm_table *mpt_table;
218 struct {
219 void __iomem *mpt_base;
220 void __iomem *mtt_base;
221 struct mthca_buddy mtt_buddy;
222 } tavor_fmr;
223};
224
225struct mthca_eq_table {
226 struct mthca_alloc alloc;
227 void __iomem *clr_int;
228 u32 clr_mask;
229 u32 arm_mask;
230 struct mthca_eq eq[MTHCA_NUM_EQ];
231 u64 icm_virt;
232 struct page *icm_page;
233 dma_addr_t icm_dma;
234 int have_irq;
235 u8 inta_pin;
236};
237
238struct mthca_cq_table {
239 struct mthca_alloc alloc;
240 spinlock_t lock;
241 struct mthca_array cq;
242 struct mthca_icm_table *table;
243};
244
245struct mthca_srq_table {
246 struct mthca_alloc alloc;
247 spinlock_t lock;
248 struct mthca_array srq;
249 struct mthca_icm_table *table;
250};
251
252struct mthca_qp_table {
253 struct mthca_alloc alloc;
254 u32 rdb_base;
255 int rdb_shift;
256 int sqp_start;
257 spinlock_t lock;
258 struct mthca_array qp;
259 struct mthca_icm_table *qp_table;
260 struct mthca_icm_table *eqp_table;
261 struct mthca_icm_table *rdb_table;
262};
263
264struct mthca_av_table {
265 struct dma_pool *pool;
266 int num_ddr_avs;
267 u64 ddr_av_base;
268 void __iomem *av_map;
269 struct mthca_alloc alloc;
270};
271
272struct mthca_mcg_table {
273 struct mutex mutex;
274 struct mthca_alloc alloc;
275 struct mthca_icm_table *table;
276};
277
278struct mthca_catas_err {
279 u64 addr;
280 u32 __iomem *map;
281 u32 size;
282 struct timer_list timer;
283 struct list_head list;
284};
285
286extern struct mutex mthca_device_mutex;
287
288struct mthca_dev {
289 struct ib_device ib_dev;
290 struct pci_dev *pdev;
291
292 int hca_type;
293 unsigned long mthca_flags;
294 unsigned long device_cap_flags;
295
296 u32 rev_id;
297 char board_id[MTHCA_BOARD_ID_LEN];
298
299 /* firmware info */
300 u64 fw_ver;
301 union {
302 struct {
303 u64 fw_start;
304 u64 fw_end;
305 } tavor;
306 struct {
307 u64 clr_int_base;
308 u64 eq_arm_base;
309 u64 eq_set_ci_base;
310 struct mthca_icm *fw_icm;
311 struct mthca_icm *aux_icm;
312 u16 fw_pages;
313 } arbel;
314 } fw;
315
316 u64 ddr_start;
317 u64 ddr_end;
318
319 MTHCA_DECLARE_DOORBELL_LOCK(doorbell_lock)
320 struct mutex cap_mask_mutex;
321
322 void __iomem *hcr;
323 void __iomem *kar;
324 void __iomem *clr_base;
325 union {
326 struct {
327 void __iomem *ecr_base;
328 } tavor;
329 struct {
330 void __iomem *eq_arm;
331 void __iomem *eq_set_ci_base;
332 } arbel;
333 } eq_regs;
334
335 struct mthca_cmd cmd;
336 struct mthca_limits limits;
337
338 struct mthca_uar_table uar_table;
339 struct mthca_pd_table pd_table;
340 struct mthca_mr_table mr_table;
341 struct mthca_eq_table eq_table;
342 struct mthca_cq_table cq_table;
343 struct mthca_srq_table srq_table;
344 struct mthca_qp_table qp_table;
345 struct mthca_av_table av_table;
346 struct mthca_mcg_table mcg_table;
347
348 struct mthca_catas_err catas_err;
349
350 struct mthca_uar driver_uar;
351 struct mthca_db_table *db_tab;
352 struct mthca_pd driver_pd;
353 struct mthca_mr driver_mr;
354
355 struct ib_mad_agent *send_agent[MTHCA_MAX_PORTS][2];
356 struct ib_ah *sm_ah[MTHCA_MAX_PORTS];
357 spinlock_t sm_lock;
358 u8 rate[MTHCA_MAX_PORTS];
359 bool active;
360};
361
362#ifdef CONFIG_INFINIBAND_MTHCA_DEBUG
363extern int mthca_debug_level;
364
365#define mthca_dbg(mdev, format, arg...) \
366 do { \
367 if (mthca_debug_level) \
368 dev_printk(KERN_DEBUG, &mdev->pdev->dev, format, ## arg); \
369 } while (0)
370
371#else /* CONFIG_INFINIBAND_MTHCA_DEBUG */
372
373#define mthca_dbg(mdev, format, arg...) do { (void) mdev; } while (0)
374
375#endif /* CONFIG_INFINIBAND_MTHCA_DEBUG */
376
377#define mthca_err(mdev, format, arg...) \
378 dev_err(&mdev->pdev->dev, format, ## arg)
379#define mthca_info(mdev, format, arg...) \
380 dev_info(&mdev->pdev->dev, format, ## arg)
381#define mthca_warn(mdev, format, arg...) \
382 dev_warn(&mdev->pdev->dev, format, ## arg)
383
384extern void __buggy_use_of_MTHCA_GET(void);
385extern void __buggy_use_of_MTHCA_PUT(void);
386
387#define MTHCA_GET(dest, source, offset) \
388 do { \
389 void *__p = (char *) (source) + (offset); \
390 switch (sizeof (dest)) { \
391 case 1: (dest) = *(u8 *) __p; break; \
392 case 2: (dest) = be16_to_cpup(__p); break; \
393 case 4: (dest) = be32_to_cpup(__p); break; \
394 case 8: (dest) = be64_to_cpup(__p); break; \
395 default: __buggy_use_of_MTHCA_GET(); \
396 } \
397 } while (0)
398
399#define MTHCA_PUT(dest, source, offset) \
400 do { \
401 void *__d = ((char *) (dest) + (offset)); \
402 switch (sizeof(source)) { \
403 case 1: *(u8 *) __d = (source); break; \
404 case 2: *(__be16 *) __d = cpu_to_be16(source); break; \
405 case 4: *(__be32 *) __d = cpu_to_be32(source); break; \
406 case 8: *(__be64 *) __d = cpu_to_be64(source); break; \
407 default: __buggy_use_of_MTHCA_PUT(); \
408 } \
409 } while (0)
410
411int mthca_reset(struct mthca_dev *mdev);
412
413u32 mthca_alloc(struct mthca_alloc *alloc);
414void mthca_free(struct mthca_alloc *alloc, u32 obj);
415int mthca_alloc_init(struct mthca_alloc *alloc, u32 num, u32 mask,
416 u32 reserved);
417void mthca_alloc_cleanup(struct mthca_alloc *alloc);
418void *mthca_array_get(struct mthca_array *array, int index);
419int mthca_array_set(struct mthca_array *array, int index, void *value);
420void mthca_array_clear(struct mthca_array *array, int index);
421int mthca_array_init(struct mthca_array *array, int nent);
422void mthca_array_cleanup(struct mthca_array *array, int nent);
423int mthca_buf_alloc(struct mthca_dev *dev, int size, int max_direct,
424 union mthca_buf *buf, int *is_direct, struct mthca_pd *pd,
425 int hca_write, struct mthca_mr *mr);
426void mthca_buf_free(struct mthca_dev *dev, int size, union mthca_buf *buf,
427 int is_direct, struct mthca_mr *mr);
428
429int mthca_init_uar_table(struct mthca_dev *dev);
430int mthca_init_pd_table(struct mthca_dev *dev);
431int mthca_init_mr_table(struct mthca_dev *dev);
432int mthca_init_eq_table(struct mthca_dev *dev);
433int mthca_init_cq_table(struct mthca_dev *dev);
434int mthca_init_srq_table(struct mthca_dev *dev);
435int mthca_init_qp_table(struct mthca_dev *dev);
436int mthca_init_av_table(struct mthca_dev *dev);
437int mthca_init_mcg_table(struct mthca_dev *dev);
438
439void mthca_cleanup_uar_table(struct mthca_dev *dev);
440void mthca_cleanup_pd_table(struct mthca_dev *dev);
441void mthca_cleanup_mr_table(struct mthca_dev *dev);
442void mthca_cleanup_eq_table(struct mthca_dev *dev);
443void mthca_cleanup_cq_table(struct mthca_dev *dev);
444void mthca_cleanup_srq_table(struct mthca_dev *dev);
445void mthca_cleanup_qp_table(struct mthca_dev *dev);
446void mthca_cleanup_av_table(struct mthca_dev *dev);
447void mthca_cleanup_mcg_table(struct mthca_dev *dev);
448
449int mthca_register_device(struct mthca_dev *dev);
450void mthca_unregister_device(struct mthca_dev *dev);
451
452void mthca_start_catas_poll(struct mthca_dev *dev);
453void mthca_stop_catas_poll(struct mthca_dev *dev);
454int __mthca_restart_one(struct pci_dev *pdev);
455int mthca_catas_init(void);
456void mthca_catas_cleanup(void);
457
458int mthca_uar_alloc(struct mthca_dev *dev, struct mthca_uar *uar);
459void mthca_uar_free(struct mthca_dev *dev, struct mthca_uar *uar);
460
461int mthca_pd_alloc(struct mthca_dev *dev, int privileged, struct mthca_pd *pd);
462void mthca_pd_free(struct mthca_dev *dev, struct mthca_pd *pd);
463
464int mthca_write_mtt_size(struct mthca_dev *dev);
465
466struct mthca_mtt *mthca_alloc_mtt(struct mthca_dev *dev, int size);
467void mthca_free_mtt(struct mthca_dev *dev, struct mthca_mtt *mtt);
468int mthca_write_mtt(struct mthca_dev *dev, struct mthca_mtt *mtt,
469 int start_index, u64 *buffer_list, int list_len);
470int mthca_mr_alloc(struct mthca_dev *dev, u32 pd, int buffer_size_shift,
471 u64 iova, u64 total_size, u32 access, struct mthca_mr *mr);
472int mthca_mr_alloc_notrans(struct mthca_dev *dev, u32 pd,
473 u32 access, struct mthca_mr *mr);
474int mthca_mr_alloc_phys(struct mthca_dev *dev, u32 pd,
475 u64 *buffer_list, int buffer_size_shift,
476 int list_len, u64 iova, u64 total_size,
477 u32 access, struct mthca_mr *mr);
478void mthca_free_mr(struct mthca_dev *dev, struct mthca_mr *mr);
479
480int mthca_map_eq_icm(struct mthca_dev *dev, u64 icm_virt);
481void mthca_unmap_eq_icm(struct mthca_dev *dev);
482
483int mthca_poll_cq(struct ib_cq *ibcq, int num_entries,
484 struct ib_wc *entry);
485int mthca_tavor_arm_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags);
486int mthca_arbel_arm_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags);
487int mthca_init_cq(struct mthca_dev *dev, int nent,
488 struct mthca_ucontext *ctx, u32 pdn,
489 struct mthca_cq *cq);
490void mthca_free_cq(struct mthca_dev *dev,
491 struct mthca_cq *cq);
492void mthca_cq_completion(struct mthca_dev *dev, u32 cqn);
493void mthca_cq_event(struct mthca_dev *dev, u32 cqn,
494 enum ib_event_type event_type);
495void mthca_cq_clean(struct mthca_dev *dev, struct mthca_cq *cq, u32 qpn,
496 struct mthca_srq *srq);
497void mthca_cq_resize_copy_cqes(struct mthca_cq *cq);
498int mthca_alloc_cq_buf(struct mthca_dev *dev, struct mthca_cq_buf *buf, int nent);
499void mthca_free_cq_buf(struct mthca_dev *dev, struct mthca_cq_buf *buf, int cqe);
500
501int mthca_alloc_srq(struct mthca_dev *dev, struct mthca_pd *pd,
502 struct ib_srq_attr *attr, struct mthca_srq *srq,
503 struct ib_udata *udata);
504void mthca_free_srq(struct mthca_dev *dev, struct mthca_srq *srq);
505int mthca_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
506 enum ib_srq_attr_mask attr_mask, struct ib_udata *udata);
507int mthca_query_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr);
508int mthca_max_srq_sge(struct mthca_dev *dev);
509void mthca_srq_event(struct mthca_dev *dev, u32 srqn,
510 enum ib_event_type event_type);
511void mthca_free_srq_wqe(struct mthca_srq *srq, u32 wqe_addr);
512int mthca_tavor_post_srq_recv(struct ib_srq *srq, const struct ib_recv_wr *wr,
513 const struct ib_recv_wr **bad_wr);
514int mthca_arbel_post_srq_recv(struct ib_srq *srq, const struct ib_recv_wr *wr,
515 const struct ib_recv_wr **bad_wr);
516
517void mthca_qp_event(struct mthca_dev *dev, u32 qpn,
518 enum ib_event_type event_type);
519int mthca_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask,
520 struct ib_qp_init_attr *qp_init_attr);
521int mthca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask,
522 struct ib_udata *udata);
523int mthca_tavor_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr,
524 const struct ib_send_wr **bad_wr);
525int mthca_tavor_post_receive(struct ib_qp *ibqp, const struct ib_recv_wr *wr,
526 const struct ib_recv_wr **bad_wr);
527int mthca_arbel_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr,
528 const struct ib_send_wr **bad_wr);
529int mthca_arbel_post_receive(struct ib_qp *ibqp, const struct ib_recv_wr *wr,
530 const struct ib_recv_wr **bad_wr);
531void mthca_free_err_wqe(struct mthca_dev *dev, struct mthca_qp *qp, int is_send,
532 int index, int *dbd, __be32 *new_wqe);
533int mthca_alloc_qp(struct mthca_dev *dev,
534 struct mthca_pd *pd,
535 struct mthca_cq *send_cq,
536 struct mthca_cq *recv_cq,
537 enum ib_qp_type type,
538 enum ib_sig_type send_policy,
539 struct ib_qp_cap *cap,
540 struct mthca_qp *qp,
541 struct ib_udata *udata);
542int mthca_alloc_sqp(struct mthca_dev *dev,
543 struct mthca_pd *pd,
544 struct mthca_cq *send_cq,
545 struct mthca_cq *recv_cq,
546 enum ib_sig_type send_policy,
547 struct ib_qp_cap *cap,
548 int qpn,
549 u32 port,
550 struct mthca_qp *qp,
551 struct ib_udata *udata);
552void mthca_free_qp(struct mthca_dev *dev, struct mthca_qp *qp);
553int mthca_create_ah(struct mthca_dev *dev,
554 struct mthca_pd *pd,
555 struct rdma_ah_attr *ah_attr,
556 struct mthca_ah *ah);
557int mthca_destroy_ah(struct mthca_dev *dev, struct mthca_ah *ah);
558int mthca_read_ah(struct mthca_dev *dev, struct mthca_ah *ah,
559 struct ib_ud_header *header);
560int mthca_ah_query(struct ib_ah *ibah, struct rdma_ah_attr *attr);
561int mthca_ah_grh_present(struct mthca_ah *ah);
562u8 mthca_get_rate(struct mthca_dev *dev, int static_rate, u32 port);
563enum ib_rate mthca_rate_to_ib(struct mthca_dev *dev, u8 mthca_rate, u32 port);
564
565int mthca_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid);
566int mthca_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid);
567
568int mthca_process_mad(struct ib_device *ibdev, int mad_flags, u32 port_num,
569 const struct ib_wc *in_wc, const struct ib_grh *in_grh,
570 const struct ib_mad *in, struct ib_mad *out,
571 size_t *out_mad_size, u16 *out_mad_pkey_index);
572int mthca_create_agents(struct mthca_dev *dev);
573void mthca_free_agents(struct mthca_dev *dev);
574
575static inline struct mthca_dev *to_mdev(struct ib_device *ibdev)
576{
577 return container_of(ibdev, struct mthca_dev, ib_dev);
578}
579
580static inline int mthca_is_memfree(struct mthca_dev *dev)
581{
582 return dev->mthca_flags & MTHCA_FLAG_MEMFREE;
583}
584
585#endif /* MTHCA_DEV_H */
586

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source code of linux/drivers/infiniband/hw/mthca/mthca_dev.h