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 
57 enum {
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 
68 enum {
69 	MTHCA_MAX_PORTS = 2
70 };
71 
72 enum {
73 	MTHCA_BOARD_ID_LEN = 64
74 };
75 
76 enum {
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 
91 enum {
92 	MTHCA_EQ_CMD,
93 	MTHCA_EQ_ASYNC,
94 	MTHCA_EQ_COMP,
95 	MTHCA_NUM_EQ
96 };
97 
98 enum {
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 	MTHCA_OPCODE_INVALID        = 0xff
109 };
110 
111 enum {
112 	MTHCA_CMD_USE_EVENTS         = 1 << 0,
113 	MTHCA_CMD_POST_DOORBELLS     = 1 << 1
114 };
115 
116 enum {
117 	MTHCA_CMD_NUM_DBELL_DWORDS = 8
118 };
119 
120 struct mthca_cmd {
121 	struct pci_pool          *pool;
122 	struct mutex              hcr_mutex;
123 	struct semaphore 	  poll_sem;
124 	struct semaphore 	  event_sem;
125 	int              	  max_cmds;
126 	spinlock_t                context_lock;
127 	int                       free_head;
128 	struct mthca_cmd_context *context;
129 	u16                       token_mask;
130 	u32                       flags;
131 	void __iomem             *dbell_map;
132 	u16                       dbell_offsets[MTHCA_CMD_NUM_DBELL_DWORDS];
133 };
134 
135 struct mthca_limits {
136 	int      num_ports;
137 	int      vl_cap;
138 	int      mtu_cap;
139 	int      gid_table_len;
140 	int      pkey_table_len;
141 	int      local_ca_ack_delay;
142 	int      num_uars;
143 	int      max_sg;
144 	int      num_qps;
145 	int      max_wqes;
146 	int	 max_desc_sz;
147 	int	 max_qp_init_rdma;
148 	int      reserved_qps;
149 	int      num_srqs;
150 	int      max_srq_wqes;
151 	int      max_srq_sge;
152 	int      reserved_srqs;
153 	int      num_eecs;
154 	int      reserved_eecs;
155 	int      num_cqs;
156 	int      max_cqes;
157 	int      reserved_cqs;
158 	int      num_eqs;
159 	int      reserved_eqs;
160 	int      num_mpts;
161 	int      num_mtt_segs;
162 	int	 mtt_seg_size;
163 	int      fmr_reserved_mtts;
164 	int      reserved_mtts;
165 	int      reserved_mrws;
166 	int      reserved_uars;
167 	int      num_mgms;
168 	int      num_amgms;
169 	int      reserved_mcgs;
170 	int      num_pds;
171 	int      reserved_pds;
172 	u32      page_size_cap;
173 	u32      flags;
174 	u16      stat_rate_support;
175 	u8       port_width_cap;
176 };
177 
178 struct mthca_alloc {
179 	u32            last;
180 	u32            top;
181 	u32            max;
182 	u32            mask;
183 	spinlock_t     lock;
184 	unsigned long *table;
185 };
186 
187 struct mthca_array {
188 	struct {
189 		void    **page;
190 		int       used;
191 	} *page_list;
192 };
193 
194 struct mthca_uar_table {
195 	struct mthca_alloc alloc;
196 	u64                uarc_base;
197 	int                uarc_size;
198 };
199 
200 struct mthca_pd_table {
201 	struct mthca_alloc alloc;
202 };
203 
204 struct mthca_buddy {
205 	unsigned long **bits;
206 	int	       *num_free;
207 	int             max_order;
208 	spinlock_t      lock;
209 };
210 
211 struct mthca_mr_table {
212 	struct mthca_alloc      mpt_alloc;
213 	struct mthca_buddy      mtt_buddy;
214 	struct mthca_buddy     *fmr_mtt_buddy;
215 	u64                     mtt_base;
216 	u64                     mpt_base;
217 	struct mthca_icm_table *mtt_table;
218 	struct mthca_icm_table *mpt_table;
219 	struct {
220 		void __iomem   *mpt_base;
221 		void __iomem   *mtt_base;
222 		struct mthca_buddy mtt_buddy;
223 	} tavor_fmr;
224 };
225 
226 struct mthca_eq_table {
227 	struct mthca_alloc alloc;
228 	void __iomem      *clr_int;
229 	u32                clr_mask;
230 	u32                arm_mask;
231 	struct mthca_eq    eq[MTHCA_NUM_EQ];
232 	u64                icm_virt;
233 	struct page       *icm_page;
234 	dma_addr_t         icm_dma;
235 	int                have_irq;
236 	u8                 inta_pin;
237 };
238 
239 struct mthca_cq_table {
240 	struct mthca_alloc 	alloc;
241 	spinlock_t         	lock;
242 	struct mthca_array      cq;
243 	struct mthca_icm_table *table;
244 };
245 
246 struct mthca_srq_table {
247 	struct mthca_alloc 	alloc;
248 	spinlock_t         	lock;
249 	struct mthca_array      srq;
250 	struct mthca_icm_table *table;
251 };
252 
253 struct mthca_qp_table {
254 	struct mthca_alloc     	alloc;
255 	u32                    	rdb_base;
256 	int                    	rdb_shift;
257 	int                    	sqp_start;
258 	spinlock_t             	lock;
259 	struct mthca_array     	qp;
260 	struct mthca_icm_table *qp_table;
261 	struct mthca_icm_table *eqp_table;
262 	struct mthca_icm_table *rdb_table;
263 };
264 
265 struct mthca_av_table {
266 	struct pci_pool   *pool;
267 	int                num_ddr_avs;
268 	u64                ddr_av_base;
269 	void __iomem      *av_map;
270 	struct mthca_alloc alloc;
271 };
272 
273 struct mthca_mcg_table {
274 	struct mutex		mutex;
275 	struct mthca_alloc 	alloc;
276 	struct mthca_icm_table *table;
277 };
278 
279 struct mthca_catas_err {
280 	u64			addr;
281 	u32 __iomem	       *map;
282 	u32			size;
283 	struct timer_list	timer;
284 	struct list_head	list;
285 };
286 
287 extern struct mutex mthca_device_mutex;
288 
289 struct mthca_dev {
290 	struct ib_device  ib_dev;
291 	struct pci_dev   *pdev;
292 
293 	int          	 hca_type;
294 	unsigned long	 mthca_flags;
295 	unsigned long    device_cap_flags;
296 
297 	u32              rev_id;
298 	char             board_id[MTHCA_BOARD_ID_LEN];
299 
300 	/* firmware info */
301 	u64              fw_ver;
302 	union {
303 		struct {
304 			u64 fw_start;
305 			u64 fw_end;
306 		}        tavor;
307 		struct {
308 			u64 clr_int_base;
309 			u64 eq_arm_base;
310 			u64 eq_set_ci_base;
311 			struct mthca_icm *fw_icm;
312 			struct mthca_icm *aux_icm;
313 			u16 fw_pages;
314 		}        arbel;
315 	}                fw;
316 
317 	u64              ddr_start;
318 	u64              ddr_end;
319 
320 	MTHCA_DECLARE_DOORBELL_LOCK(doorbell_lock)
321 	struct mutex cap_mask_mutex;
322 
323 	void __iomem    *hcr;
324 	void __iomem    *kar;
325 	void __iomem    *clr_base;
326 	union {
327 		struct {
328 			void __iomem *ecr_base;
329 		} tavor;
330 		struct {
331 			void __iomem *eq_arm;
332 			void __iomem *eq_set_ci_base;
333 		} arbel;
334 	} eq_regs;
335 
336 	struct mthca_cmd    cmd;
337 	struct mthca_limits limits;
338 
339 	struct mthca_uar_table uar_table;
340 	struct mthca_pd_table  pd_table;
341 	struct mthca_mr_table  mr_table;
342 	struct mthca_eq_table  eq_table;
343 	struct mthca_cq_table  cq_table;
344 	struct mthca_srq_table srq_table;
345 	struct mthca_qp_table  qp_table;
346 	struct mthca_av_table  av_table;
347 	struct mthca_mcg_table mcg_table;
348 
349 	struct mthca_catas_err catas_err;
350 
351 	struct mthca_uar       driver_uar;
352 	struct mthca_db_table *db_tab;
353 	struct mthca_pd        driver_pd;
354 	struct mthca_mr        driver_mr;
355 
356 	struct ib_mad_agent  *send_agent[MTHCA_MAX_PORTS][2];
357 	struct ib_ah         *sm_ah[MTHCA_MAX_PORTS];
358 	spinlock_t            sm_lock;
359 	u8                    rate[MTHCA_MAX_PORTS];
360 	bool		      active;
361 };
362 
363 #ifdef CONFIG_INFINIBAND_MTHCA_DEBUG
364 extern int mthca_debug_level;
365 
366 #define mthca_dbg(mdev, format, arg...)					\
367 	do {								\
368 		if (mthca_debug_level)					\
369 			dev_printk(KERN_DEBUG, &mdev->pdev->dev, format, ## arg); \
370 	} while (0)
371 
372 #else /* CONFIG_INFINIBAND_MTHCA_DEBUG */
373 
374 #define mthca_dbg(mdev, format, arg...) do { (void) mdev; } while (0)
375 
376 #endif /* CONFIG_INFINIBAND_MTHCA_DEBUG */
377 
378 #define mthca_err(mdev, format, arg...) \
379 	dev_err(&mdev->pdev->dev, format, ## arg)
380 #define mthca_info(mdev, format, arg...) \
381 	dev_info(&mdev->pdev->dev, format, ## arg)
382 #define mthca_warn(mdev, format, arg...) \
383 	dev_warn(&mdev->pdev->dev, format, ## arg)
384 
385 extern void __buggy_use_of_MTHCA_GET(void);
386 extern void __buggy_use_of_MTHCA_PUT(void);
387 
388 #define MTHCA_GET(dest, source, offset)                               \
389 	do {                                                          \
390 		void *__p = (char *) (source) + (offset);             \
391 		switch (sizeof (dest)) {                              \
392 		case 1: (dest) = *(u8 *) __p;       break;	      \
393 		case 2: (dest) = be16_to_cpup(__p); break;	      \
394 		case 4: (dest) = be32_to_cpup(__p); break;	      \
395 		case 8: (dest) = be64_to_cpup(__p); break;	      \
396 		default: __buggy_use_of_MTHCA_GET();		      \
397 		}                                                     \
398 	} while (0)
399 
400 #define MTHCA_PUT(dest, source, offset)                               \
401 	do {                                                          \
402 		void *__d = ((char *) (dest) + (offset));	      \
403 		switch (sizeof(source)) {                             \
404 		case 1: *(u8 *) __d = (source);                break; \
405 		case 2:	*(__be16 *) __d = cpu_to_be16(source); break; \
406 		case 4:	*(__be32 *) __d = cpu_to_be32(source); break; \
407 		case 8:	*(__be64 *) __d = cpu_to_be64(source); break; \
408 		default: __buggy_use_of_MTHCA_PUT();		      \
409 		}                                                     \
410 	} while (0)
411 
412 int mthca_reset(struct mthca_dev *mdev);
413 
414 u32 mthca_alloc(struct mthca_alloc *alloc);
415 void mthca_free(struct mthca_alloc *alloc, u32 obj);
416 int mthca_alloc_init(struct mthca_alloc *alloc, u32 num, u32 mask,
417 		     u32 reserved);
418 void mthca_alloc_cleanup(struct mthca_alloc *alloc);
419 void *mthca_array_get(struct mthca_array *array, int index);
420 int mthca_array_set(struct mthca_array *array, int index, void *value);
421 void mthca_array_clear(struct mthca_array *array, int index);
422 int mthca_array_init(struct mthca_array *array, int nent);
423 void mthca_array_cleanup(struct mthca_array *array, int nent);
424 int mthca_buf_alloc(struct mthca_dev *dev, int size, int max_direct,
425 		    union mthca_buf *buf, int *is_direct, struct mthca_pd *pd,
426 		    int hca_write, struct mthca_mr *mr);
427 void mthca_buf_free(struct mthca_dev *dev, int size, union mthca_buf *buf,
428 		    int is_direct, struct mthca_mr *mr);
429 
430 int mthca_init_uar_table(struct mthca_dev *dev);
431 int mthca_init_pd_table(struct mthca_dev *dev);
432 int mthca_init_mr_table(struct mthca_dev *dev);
433 int mthca_init_eq_table(struct mthca_dev *dev);
434 int mthca_init_cq_table(struct mthca_dev *dev);
435 int mthca_init_srq_table(struct mthca_dev *dev);
436 int mthca_init_qp_table(struct mthca_dev *dev);
437 int mthca_init_av_table(struct mthca_dev *dev);
438 int mthca_init_mcg_table(struct mthca_dev *dev);
439 
440 void mthca_cleanup_uar_table(struct mthca_dev *dev);
441 void mthca_cleanup_pd_table(struct mthca_dev *dev);
442 void mthca_cleanup_mr_table(struct mthca_dev *dev);
443 void mthca_cleanup_eq_table(struct mthca_dev *dev);
444 void mthca_cleanup_cq_table(struct mthca_dev *dev);
445 void mthca_cleanup_srq_table(struct mthca_dev *dev);
446 void mthca_cleanup_qp_table(struct mthca_dev *dev);
447 void mthca_cleanup_av_table(struct mthca_dev *dev);
448 void mthca_cleanup_mcg_table(struct mthca_dev *dev);
449 
450 int mthca_register_device(struct mthca_dev *dev);
451 void mthca_unregister_device(struct mthca_dev *dev);
452 
453 void mthca_start_catas_poll(struct mthca_dev *dev);
454 void mthca_stop_catas_poll(struct mthca_dev *dev);
455 int __mthca_restart_one(struct pci_dev *pdev);
456 int mthca_catas_init(void);
457 void mthca_catas_cleanup(void);
458 
459 int mthca_uar_alloc(struct mthca_dev *dev, struct mthca_uar *uar);
460 void mthca_uar_free(struct mthca_dev *dev, struct mthca_uar *uar);
461 
462 int mthca_pd_alloc(struct mthca_dev *dev, int privileged, struct mthca_pd *pd);
463 void mthca_pd_free(struct mthca_dev *dev, struct mthca_pd *pd);
464 
465 int mthca_write_mtt_size(struct mthca_dev *dev);
466 
467 struct mthca_mtt *mthca_alloc_mtt(struct mthca_dev *dev, int size);
468 void mthca_free_mtt(struct mthca_dev *dev, struct mthca_mtt *mtt);
469 int mthca_write_mtt(struct mthca_dev *dev, struct mthca_mtt *mtt,
470 		    int start_index, u64 *buffer_list, int list_len);
471 int mthca_mr_alloc(struct mthca_dev *dev, u32 pd, int buffer_size_shift,
472 		   u64 iova, u64 total_size, u32 access, struct mthca_mr *mr);
473 int mthca_mr_alloc_notrans(struct mthca_dev *dev, u32 pd,
474 			   u32 access, struct mthca_mr *mr);
475 int mthca_mr_alloc_phys(struct mthca_dev *dev, u32 pd,
476 			u64 *buffer_list, int buffer_size_shift,
477 			int list_len, u64 iova, u64 total_size,
478 			u32 access, struct mthca_mr *mr);
479 void mthca_free_mr(struct mthca_dev *dev,  struct mthca_mr *mr);
480 
481 int mthca_fmr_alloc(struct mthca_dev *dev, u32 pd,
482 		    u32 access, struct mthca_fmr *fmr);
483 int mthca_tavor_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
484 			     int list_len, u64 iova);
485 void mthca_tavor_fmr_unmap(struct mthca_dev *dev, struct mthca_fmr *fmr);
486 int mthca_arbel_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
487 			     int list_len, u64 iova);
488 void mthca_arbel_fmr_unmap(struct mthca_dev *dev, struct mthca_fmr *fmr);
489 int mthca_free_fmr(struct mthca_dev *dev,  struct mthca_fmr *fmr);
490 
491 int mthca_map_eq_icm(struct mthca_dev *dev, u64 icm_virt);
492 void mthca_unmap_eq_icm(struct mthca_dev *dev);
493 
494 int mthca_poll_cq(struct ib_cq *ibcq, int num_entries,
495 		  struct ib_wc *entry);
496 int mthca_tavor_arm_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags);
497 int mthca_arbel_arm_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags);
498 int mthca_init_cq(struct mthca_dev *dev, int nent,
499 		  struct mthca_ucontext *ctx, u32 pdn,
500 		  struct mthca_cq *cq);
501 void mthca_free_cq(struct mthca_dev *dev,
502 		   struct mthca_cq *cq);
503 void mthca_cq_completion(struct mthca_dev *dev, u32 cqn);
504 void mthca_cq_event(struct mthca_dev *dev, u32 cqn,
505 		    enum ib_event_type event_type);
506 void mthca_cq_clean(struct mthca_dev *dev, struct mthca_cq *cq, u32 qpn,
507 		    struct mthca_srq *srq);
508 void mthca_cq_resize_copy_cqes(struct mthca_cq *cq);
509 int mthca_alloc_cq_buf(struct mthca_dev *dev, struct mthca_cq_buf *buf, int nent);
510 void mthca_free_cq_buf(struct mthca_dev *dev, struct mthca_cq_buf *buf, int cqe);
511 
512 int mthca_alloc_srq(struct mthca_dev *dev, struct mthca_pd *pd,
513 		    struct ib_srq_attr *attr, struct mthca_srq *srq);
514 void mthca_free_srq(struct mthca_dev *dev, struct mthca_srq *srq);
515 int mthca_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
516 		     enum ib_srq_attr_mask attr_mask, struct ib_udata *udata);
517 int mthca_query_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr);
518 int mthca_max_srq_sge(struct mthca_dev *dev);
519 void mthca_srq_event(struct mthca_dev *dev, u32 srqn,
520 		     enum ib_event_type event_type);
521 void mthca_free_srq_wqe(struct mthca_srq *srq, u32 wqe_addr);
522 int mthca_tavor_post_srq_recv(struct ib_srq *srq, struct ib_recv_wr *wr,
523 			      struct ib_recv_wr **bad_wr);
524 int mthca_arbel_post_srq_recv(struct ib_srq *srq, struct ib_recv_wr *wr,
525 			      struct ib_recv_wr **bad_wr);
526 
527 void mthca_qp_event(struct mthca_dev *dev, u32 qpn,
528 		    enum ib_event_type event_type);
529 int mthca_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask,
530 		   struct ib_qp_init_attr *qp_init_attr);
531 int mthca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask,
532 		    struct ib_udata *udata);
533 int mthca_tavor_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
534 			  struct ib_send_wr **bad_wr);
535 int mthca_tavor_post_receive(struct ib_qp *ibqp, struct ib_recv_wr *wr,
536 			     struct ib_recv_wr **bad_wr);
537 int mthca_arbel_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
538 			  struct ib_send_wr **bad_wr);
539 int mthca_arbel_post_receive(struct ib_qp *ibqp, struct ib_recv_wr *wr,
540 			     struct ib_recv_wr **bad_wr);
541 void mthca_free_err_wqe(struct mthca_dev *dev, struct mthca_qp *qp, int is_send,
542 			int index, int *dbd, __be32 *new_wqe);
543 int mthca_alloc_qp(struct mthca_dev *dev,
544 		   struct mthca_pd *pd,
545 		   struct mthca_cq *send_cq,
546 		   struct mthca_cq *recv_cq,
547 		   enum ib_qp_type type,
548 		   enum ib_sig_type send_policy,
549 		   struct ib_qp_cap *cap,
550 		   struct mthca_qp *qp);
551 int mthca_alloc_sqp(struct mthca_dev *dev,
552 		    struct mthca_pd *pd,
553 		    struct mthca_cq *send_cq,
554 		    struct mthca_cq *recv_cq,
555 		    enum ib_sig_type send_policy,
556 		    struct ib_qp_cap *cap,
557 		    int qpn,
558 		    int port,
559 		    struct mthca_sqp *sqp);
560 void mthca_free_qp(struct mthca_dev *dev, struct mthca_qp *qp);
561 int mthca_create_ah(struct mthca_dev *dev,
562 		    struct mthca_pd *pd,
563 		    struct ib_ah_attr *ah_attr,
564 		    struct mthca_ah *ah);
565 int mthca_destroy_ah(struct mthca_dev *dev, struct mthca_ah *ah);
566 int mthca_read_ah(struct mthca_dev *dev, struct mthca_ah *ah,
567 		  struct ib_ud_header *header);
568 int mthca_ah_query(struct ib_ah *ibah, struct ib_ah_attr *attr);
569 int mthca_ah_grh_present(struct mthca_ah *ah);
570 u8 mthca_get_rate(struct mthca_dev *dev, int static_rate, u8 port);
571 enum ib_rate mthca_rate_to_ib(struct mthca_dev *dev, u8 mthca_rate, u8 port);
572 
573 int mthca_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid);
574 int mthca_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid);
575 
576 int mthca_process_mad(struct ib_device *ibdev,
577 		      int mad_flags,
578 		      u8 port_num,
579 		      const struct ib_wc *in_wc,
580 		      const struct ib_grh *in_grh,
581 		      const struct ib_mad_hdr *in, size_t in_mad_size,
582 		      struct ib_mad_hdr *out, size_t *out_mad_size,
583 		      u16 *out_mad_pkey_index);
584 int mthca_create_agents(struct mthca_dev *dev);
585 void mthca_free_agents(struct mthca_dev *dev);
586 
587 static inline struct mthca_dev *to_mdev(struct ib_device *ibdev)
588 {
589 	return container_of(ibdev, struct mthca_dev, ib_dev);
590 }
591 
592 static inline int mthca_is_memfree(struct mthca_dev *dev)
593 {
594 	return dev->mthca_flags & MTHCA_FLAG_MEMFREE;
595 }
596 
597 #endif /* MTHCA_DEV_H */
598