1 /*
2  * Copyright (c) 2006, 2007, 2008, 2009, 2010 QLogic Corporation.
3  * All rights reserved.
4  * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved.
5  *
6  * This software is available to you under a choice of one of two
7  * licenses.  You may choose to be licensed under the terms of the GNU
8  * General Public License (GPL) Version 2, available from the file
9  * COPYING in the main directory of this source tree, or the
10  * OpenIB.org BSD license below:
11  *
12  *     Redistribution and use in source and binary forms, with or
13  *     without modification, are permitted provided that the following
14  *     conditions are met:
15  *
16  *      - Redistributions of source code must retain the above
17  *        copyright notice, this list of conditions and the following
18  *        disclaimer.
19  *
20  *      - Redistributions in binary form must reproduce the above
21  *        copyright notice, this list of conditions and the following
22  *        disclaimer in the documentation and/or other materials
23  *        provided with the distribution.
24  *
25  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32  * SOFTWARE.
33  */
34 
35 #ifndef _QIB_COMMON_H
36 #define _QIB_COMMON_H
37 
38 /*
39  * This file contains defines, structures, etc. that are used
40  * to communicate between kernel and user code.
41  */
42 
43 /* This is the IEEE-assigned OUI for QLogic Inc. QLogic_IB */
44 #define QIB_SRC_OUI_1 0x00
45 #define QIB_SRC_OUI_2 0x11
46 #define QIB_SRC_OUI_3 0x75
47 
48 /* version of protocol header (known to chip also). In the long run,
49  * we should be able to generate and accept a range of version numbers;
50  * for now we only accept one, and it's compiled in.
51  */
52 #define IPS_PROTO_VERSION 2
53 
54 /*
55  * These are compile time constants that you may want to enable or disable
56  * if you are trying to debug problems with code or performance.
57  * QIB_VERBOSE_TRACING define as 1 if you want additional tracing in
58  * fastpath code
59  * QIB_TRACE_REGWRITES define as 1 if you want register writes to be
60  * traced in fastpath code
61  * _QIB_TRACING define as 0 if you want to remove all tracing in a
62  * compilation unit
63  */
64 
65 /*
66  * The value in the BTH QP field that QLogic_IB uses to differentiate
67  * an qlogic_ib protocol IB packet vs standard IB transport
68  * This it needs to be even (0x656b78), because the LSB is sometimes
69  * used for the MSB of context. The change may cause a problem
70  * interoperating with older software.
71  */
72 #define QIB_KD_QP 0x656b78
73 
74 /*
75  * These are the status bits readable (in ascii form, 64bit value)
76  * from the "status" sysfs file.  For binary compatibility, values
77  * must remain as is; removed states can be reused for different
78  * purposes.
79  */
80 #define QIB_STATUS_INITTED       0x1    /* basic initialization done */
81 /* Chip has been found and initted */
82 #define QIB_STATUS_CHIP_PRESENT 0x20
83 /* IB link is at ACTIVE, usable for data traffic */
84 #define QIB_STATUS_IB_READY     0x40
85 /* link is configured, LID, MTU, etc. have been set */
86 #define QIB_STATUS_IB_CONF      0x80
87 /* A Fatal hardware error has occurred. */
88 #define QIB_STATUS_HWERROR     0x200
89 
90 /*
91  * The list of usermode accessible registers.  Also see Reg_* later in file.
92  */
93 enum qib_ureg {
94 	/* (RO)  DMA RcvHdr to be used next. */
95 	ur_rcvhdrtail = 0,
96 	/* (RW)  RcvHdr entry to be processed next by host. */
97 	ur_rcvhdrhead = 1,
98 	/* (RO)  Index of next Eager index to use. */
99 	ur_rcvegrindextail = 2,
100 	/* (RW)  Eager TID to be processed next */
101 	ur_rcvegrindexhead = 3,
102 	/* For internal use only; max register number. */
103 	_QIB_UregMax
104 };
105 
106 /* bit values for spi_runtime_flags */
107 #define QIB_RUNTIME_PCIE                0x0002
108 #define QIB_RUNTIME_FORCE_WC_ORDER      0x0004
109 #define QIB_RUNTIME_RCVHDR_COPY         0x0008
110 #define QIB_RUNTIME_MASTER              0x0010
111 #define QIB_RUNTIME_RCHK                0x0020
112 #define QIB_RUNTIME_NODMA_RTAIL         0x0080
113 #define QIB_RUNTIME_SPECIAL_TRIGGER     0x0100
114 #define QIB_RUNTIME_SDMA                0x0200
115 #define QIB_RUNTIME_FORCE_PIOAVAIL      0x0400
116 #define QIB_RUNTIME_PIO_REGSWAPPED      0x0800
117 #define QIB_RUNTIME_CTXT_MSB_IN_QP      0x1000
118 #define QIB_RUNTIME_CTXT_REDIRECT       0x2000
119 #define QIB_RUNTIME_HDRSUPP             0x4000
120 
121 /*
122  * This structure is returned by qib_userinit() immediately after
123  * open to get implementation-specific info, and info specific to this
124  * instance.
125  *
126  * This struct must have explict pad fields where type sizes
127  * may result in different alignments between 32 and 64 bit
128  * programs, since the 64 bit * bit kernel requires the user code
129  * to have matching offsets
130  */
131 struct qib_base_info {
132 	/* version of hardware, for feature checking. */
133 	__u32 spi_hw_version;
134 	/* version of software, for feature checking. */
135 	__u32 spi_sw_version;
136 	/* QLogic_IB context assigned, goes into sent packets */
137 	__u16 spi_ctxt;
138 	__u16 spi_subctxt;
139 	/*
140 	 * IB MTU, packets IB data must be less than this.
141 	 * The MTU is in bytes, and will be a multiple of 4 bytes.
142 	 */
143 	__u32 spi_mtu;
144 	/*
145 	 * Size of a PIO buffer.  Any given packet's total size must be less
146 	 * than this (in words).  Included is the starting control word, so
147 	 * if 513 is returned, then total pkt size is 512 words or less.
148 	 */
149 	__u32 spi_piosize;
150 	/* size of the TID cache in qlogic_ib, in entries */
151 	__u32 spi_tidcnt;
152 	/* size of the TID Eager list in qlogic_ib, in entries */
153 	__u32 spi_tidegrcnt;
154 	/* size of a single receive header queue entry in words. */
155 	__u32 spi_rcvhdrent_size;
156 	/*
157 	 * Count of receive header queue entries allocated.
158 	 * This may be less than the spu_rcvhdrcnt passed in!.
159 	 */
160 	__u32 spi_rcvhdr_cnt;
161 
162 	/* per-chip and other runtime features bitmap (QIB_RUNTIME_*) */
163 	__u32 spi_runtime_flags;
164 
165 	/* address where hardware receive header queue is mapped */
166 	__u64 spi_rcvhdr_base;
167 
168 	/* user program. */
169 
170 	/* base address of eager TID receive buffers used by hardware. */
171 	__u64 spi_rcv_egrbufs;
172 
173 	/* Allocated by initialization code, not by protocol. */
174 
175 	/*
176 	 * Size of each TID buffer in host memory, starting at
177 	 * spi_rcv_egrbufs.  The buffers are virtually contiguous.
178 	 */
179 	__u32 spi_rcv_egrbufsize;
180 	/*
181 	 * The special QP (queue pair) value that identifies an qlogic_ib
182 	 * protocol packet from standard IB packets.  More, probably much
183 	 * more, to be added.
184 	 */
185 	__u32 spi_qpair;
186 
187 	/*
188 	 * User register base for init code, not to be used directly by
189 	 * protocol or applications.  Always points to chip registers,
190 	 * for normal or shared context.
191 	 */
192 	__u64 spi_uregbase;
193 	/*
194 	 * Maximum buffer size in bytes that can be used in a single TID
195 	 * entry (assuming the buffer is aligned to this boundary).  This is
196 	 * the minimum of what the hardware and software support Guaranteed
197 	 * to be a power of 2.
198 	 */
199 	__u32 spi_tid_maxsize;
200 	/*
201 	 * alignment of each pio send buffer (byte count
202 	 * to add to spi_piobufbase to get to second buffer)
203 	 */
204 	__u32 spi_pioalign;
205 	/*
206 	 * The index of the first pio buffer available to this process;
207 	 * needed to do lookup in spi_pioavailaddr; not added to
208 	 * spi_piobufbase.
209 	 */
210 	__u32 spi_pioindex;
211 	 /* number of buffers mapped for this process */
212 	__u32 spi_piocnt;
213 
214 	/*
215 	 * Base address of writeonly pio buffers for this process.
216 	 * Each buffer has spi_piosize words, and is aligned on spi_pioalign
217 	 * boundaries.  spi_piocnt buffers are mapped from this address
218 	 */
219 	__u64 spi_piobufbase;
220 
221 	/*
222 	 * Base address of readonly memory copy of the pioavail registers.
223 	 * There are 2 bits for each buffer.
224 	 */
225 	__u64 spi_pioavailaddr;
226 
227 	/*
228 	 * Address where driver updates a copy of the interface and driver
229 	 * status (QIB_STATUS_*) as a 64 bit value.  It's followed by a
230 	 * link status qword (formerly combined with driver status), then a
231 	 * string indicating hardware error, if there was one.
232 	 */
233 	__u64 spi_status;
234 
235 	/* number of chip ctxts available to user processes */
236 	__u32 spi_nctxts;
237 	__u16 spi_unit; /* unit number of chip we are using */
238 	__u16 spi_port; /* IB port number we are using */
239 	/* num bufs in each contiguous set */
240 	__u32 spi_rcv_egrperchunk;
241 	/* size in bytes of each contiguous set */
242 	__u32 spi_rcv_egrchunksize;
243 	/* total size of mmap to cover full rcvegrbuffers */
244 	__u32 spi_rcv_egrbuftotlen;
245 	__u32 spi_rhf_offset; /* dword offset in hdrqent for rcvhdr flags */
246 	/* address of readonly memory copy of the rcvhdrq tail register. */
247 	__u64 spi_rcvhdr_tailaddr;
248 
249 	/*
250 	 * shared memory pages for subctxts if ctxt is shared; these cover
251 	 * all the processes in the group sharing a single context.
252 	 * all have enough space for the num_subcontexts value on this job.
253 	 */
254 	__u64 spi_subctxt_uregbase;
255 	__u64 spi_subctxt_rcvegrbuf;
256 	__u64 spi_subctxt_rcvhdr_base;
257 
258 	/* shared memory page for send buffer disarm status */
259 	__u64 spi_sendbuf_status;
260 } __aligned(8);
261 
262 /*
263  * This version number is given to the driver by the user code during
264  * initialization in the spu_userversion field of qib_user_info, so
265  * the driver can check for compatibility with user code.
266  *
267  * The major version changes when data structures
268  * change in an incompatible way.  The driver must be the same or higher
269  * for initialization to succeed.  In some cases, a higher version
270  * driver will not interoperate with older software, and initialization
271  * will return an error.
272  */
273 #define QIB_USER_SWMAJOR 1
274 
275 /*
276  * Minor version differences are always compatible
277  * a within a major version, however if user software is larger
278  * than driver software, some new features and/or structure fields
279  * may not be implemented; the user code must deal with this if it
280  * cares, or it must abort after initialization reports the difference.
281  */
282 #define QIB_USER_SWMINOR 13
283 
284 #define QIB_USER_SWVERSION ((QIB_USER_SWMAJOR << 16) | QIB_USER_SWMINOR)
285 
286 #ifndef QIB_KERN_TYPE
287 #define QIB_KERN_TYPE 0
288 #endif
289 
290 /*
291  * Similarly, this is the kernel version going back to the user.  It's
292  * slightly different, in that we want to tell if the driver was built as
293  * part of a QLogic release, or from the driver from openfabrics.org,
294  * kernel.org, or a standard distribution, for support reasons.
295  * The high bit is 0 for non-QLogic and 1 for QLogic-built/supplied.
296  *
297  * It's returned by the driver to the user code during initialization in the
298  * spi_sw_version field of qib_base_info, so the user code can in turn
299  * check for compatibility with the kernel.
300 */
301 #define QIB_KERN_SWVERSION ((QIB_KERN_TYPE << 31) | QIB_USER_SWVERSION)
302 
303 /*
304  * Define the driver version number.  This is something that refers only
305  * to the driver itself, not the software interfaces it supports.
306  */
307 #define QIB_DRIVER_VERSION_BASE "1.11"
308 
309 /* create the final driver version string */
310 #ifdef QIB_IDSTR
311 #define QIB_DRIVER_VERSION QIB_DRIVER_VERSION_BASE " " QIB_IDSTR
312 #else
313 #define QIB_DRIVER_VERSION QIB_DRIVER_VERSION_BASE
314 #endif
315 
316 /*
317  * If the unit is specified via open, HCA choice is fixed.  If port is
318  * specified, it's also fixed.  Otherwise we try to spread contexts
319  * across ports and HCAs, using different algorithims.  WITHIN is
320  * the old default, prior to this mechanism.
321  */
322 #define QIB_PORT_ALG_ACROSS 0 /* round robin contexts across HCAs, then
323 			       * ports; this is the default */
324 #define QIB_PORT_ALG_WITHIN 1 /* use all contexts on an HCA (round robin
325 			       * active ports within), then next HCA */
326 #define QIB_PORT_ALG_COUNT 2 /* number of algorithm choices */
327 
328 /*
329  * This structure is passed to qib_userinit() to tell the driver where
330  * user code buffers are, sizes, etc.   The offsets and sizes of the
331  * fields must remain unchanged, for binary compatibility.  It can
332  * be extended, if userversion is changed so user code can tell, if needed
333  */
334 struct qib_user_info {
335 	/*
336 	 * version of user software, to detect compatibility issues.
337 	 * Should be set to QIB_USER_SWVERSION.
338 	 */
339 	__u32 spu_userversion;
340 
341 	__u32 _spu_unused2;
342 
343 	/* size of struct base_info to write to */
344 	__u32 spu_base_info_size;
345 
346 	__u32 spu_port_alg; /* which QIB_PORT_ALG_*; unused user minor < 11 */
347 
348 	/*
349 	 * If two or more processes wish to share a context, each process
350 	 * must set the spu_subctxt_cnt and spu_subctxt_id to the same
351 	 * values.  The only restriction on the spu_subctxt_id is that
352 	 * it be unique for a given node.
353 	 */
354 	__u16 spu_subctxt_cnt;
355 	__u16 spu_subctxt_id;
356 
357 	__u32 spu_port; /* IB port requested by user if > 0 */
358 
359 	/*
360 	 * address of struct base_info to write to
361 	 */
362 	__u64 spu_base_info;
363 
364 } __aligned(8);
365 
366 /* User commands. */
367 
368 /* 16 available, was: old set up userspace (for old user code) */
369 #define QIB_CMD_CTXT_INFO       17      /* find out what resources we got */
370 #define QIB_CMD_RECV_CTRL       18      /* control receipt of packets */
371 #define QIB_CMD_TID_UPDATE      19      /* update expected TID entries */
372 #define QIB_CMD_TID_FREE        20      /* free expected TID entries */
373 #define QIB_CMD_SET_PART_KEY    21      /* add partition key */
374 /* 22 available, was: return info on slave processes (for old user code) */
375 #define QIB_CMD_ASSIGN_CTXT     23      /* allocate HCA and ctxt */
376 #define QIB_CMD_USER_INIT       24      /* set up userspace */
377 #define QIB_CMD_UNUSED_1        25
378 #define QIB_CMD_UNUSED_2        26
379 #define QIB_CMD_PIOAVAILUPD     27      /* force an update of PIOAvail reg */
380 #define QIB_CMD_POLL_TYPE       28      /* set the kind of polling we want */
381 #define QIB_CMD_ARMLAUNCH_CTRL  29      /* armlaunch detection control */
382 /* 30 is unused */
383 #define QIB_CMD_SDMA_INFLIGHT   31      /* sdma inflight counter request */
384 #define QIB_CMD_SDMA_COMPLETE   32      /* sdma completion counter request */
385 /* 33 available, was a testing feature  */
386 #define QIB_CMD_DISARM_BUFS     34      /* disarm send buffers w/ errors */
387 #define QIB_CMD_ACK_EVENT       35      /* ack & clear bits */
388 #define QIB_CMD_CPUS_LIST       36      /* list of cpus allocated, for pinned
389 					 * processes: qib_cpus_list */
390 
391 /*
392  * QIB_CMD_ACK_EVENT obsoletes QIB_CMD_DISARM_BUFS, but we keep it for
393  * compatibility with libraries from previous release.   The ACK_EVENT
394  * will take appropriate driver action (if any, just DISARM for now),
395  * then clear the bits passed in as part of the mask.  These bits are
396  * in the first 64bit word at spi_sendbuf_status, and are passed to
397  * the driver in the event_mask union as well.
398  */
399 #define _QIB_EVENT_DISARM_BUFS_BIT	0
400 #define _QIB_EVENT_LINKDOWN_BIT		1
401 #define _QIB_EVENT_LID_CHANGE_BIT	2
402 #define _QIB_EVENT_LMC_CHANGE_BIT	3
403 #define _QIB_EVENT_SL2VL_CHANGE_BIT	4
404 #define _QIB_MAX_EVENT_BIT _QIB_EVENT_SL2VL_CHANGE_BIT
405 
406 #define QIB_EVENT_DISARM_BUFS_BIT	(1UL << _QIB_EVENT_DISARM_BUFS_BIT)
407 #define QIB_EVENT_LINKDOWN_BIT		(1UL << _QIB_EVENT_LINKDOWN_BIT)
408 #define QIB_EVENT_LID_CHANGE_BIT	(1UL << _QIB_EVENT_LID_CHANGE_BIT)
409 #define QIB_EVENT_LMC_CHANGE_BIT	(1UL << _QIB_EVENT_LMC_CHANGE_BIT)
410 #define QIB_EVENT_SL2VL_CHANGE_BIT	(1UL << _QIB_EVENT_SL2VL_CHANGE_BIT)
411 
412 
413 /*
414  * Poll types
415  */
416 #define QIB_POLL_TYPE_ANYRCV     0x0
417 #define QIB_POLL_TYPE_URGENT     0x1
418 
419 struct qib_ctxt_info {
420 	__u16 num_active;       /* number of active units */
421 	__u16 unit;             /* unit (chip) assigned to caller */
422 	__u16 port;             /* IB port assigned to caller (1-based) */
423 	__u16 ctxt;             /* ctxt on unit assigned to caller */
424 	__u16 subctxt;          /* subctxt on unit assigned to caller */
425 	__u16 num_ctxts;        /* number of ctxts available on unit */
426 	__u16 num_subctxts;     /* number of subctxts opened on ctxt */
427 	__u16 rec_cpu;          /* cpu # for affinity (ffff if none) */
428 };
429 
430 struct qib_tid_info {
431 	__u32 tidcnt;
432 	/* make structure same size in 32 and 64 bit */
433 	__u32 tid__unused;
434 	/* virtual address of first page in transfer */
435 	__u64 tidvaddr;
436 	/* pointer (same size 32/64 bit) to __u16 tid array */
437 	__u64 tidlist;
438 
439 	/*
440 	 * pointer (same size 32/64 bit) to bitmap of TIDs used
441 	 * for this call; checked for being large enough at open
442 	 */
443 	__u64 tidmap;
444 };
445 
446 struct qib_cmd {
447 	__u32 type;                     /* command type */
448 	union {
449 		struct qib_tid_info tid_info;
450 		struct qib_user_info user_info;
451 
452 		/*
453 		 * address in userspace where we should put the sdma
454 		 * inflight counter
455 		 */
456 		__u64 sdma_inflight;
457 		/*
458 		 * address in userspace where we should put the sdma
459 		 * completion counter
460 		 */
461 		__u64 sdma_complete;
462 		/* address in userspace of struct qib_ctxt_info to
463 		   write result to */
464 		__u64 ctxt_info;
465 		/* enable/disable receipt of packets */
466 		__u32 recv_ctrl;
467 		/* enable/disable armlaunch errors (non-zero to enable) */
468 		__u32 armlaunch_ctrl;
469 		/* partition key to set */
470 		__u16 part_key;
471 		/* user address of __u32 bitmask of active slaves */
472 		__u64 slave_mask_addr;
473 		/* type of polling we want */
474 		__u16 poll_type;
475 		/* back pressure enable bit for one particular context */
476 		__u8 ctxt_bp;
477 		/* qib_user_event_ack(), IPATH_EVENT_* bits */
478 		__u64 event_mask;
479 	} cmd;
480 };
481 
482 struct qib_iovec {
483 	/* Pointer to data, but same size 32 and 64 bit */
484 	__u64 iov_base;
485 
486 	/*
487 	 * Length of data; don't need 64 bits, but want
488 	 * qib_sendpkt to remain same size as before 32 bit changes, so...
489 	 */
490 	__u64 iov_len;
491 };
492 
493 /*
494  * Describes a single packet for send.  Each packet can have one or more
495  * buffers, but the total length (exclusive of IB headers) must be less
496  * than the MTU, and if using the PIO method, entire packet length,
497  * including IB headers, must be less than the qib_piosize value (words).
498  * Use of this necessitates including sys/uio.h
499  */
500 struct __qib_sendpkt {
501 	__u32 sps_flags;        /* flags for packet (TBD) */
502 	__u32 sps_cnt;          /* number of entries to use in sps_iov */
503 	/* array of iov's describing packet. TEMPORARY */
504 	struct qib_iovec sps_iov[4];
505 };
506 
507 /*
508  * Diagnostics can send a packet by "writing" the following
509  * structs to the diag data special file.
510  * This allows a custom
511  * pbc (+ static rate) qword, so that special modes and deliberate
512  * changes to CRCs can be used. The elements were also re-ordered
513  * for better alignment and to avoid padding issues.
514  */
515 #define _DIAG_XPKT_VERS 3
516 struct qib_diag_xpkt {
517 	__u16 version;
518 	__u16 unit;
519 	__u16 port;
520 	__u16 len;
521 	__u64 data;
522 	__u64 pbc_wd;
523 };
524 
525 /*
526  * Data layout in I2C flash (for GUID, etc.)
527  * All fields are little-endian binary unless otherwise stated
528  */
529 #define QIB_FLASH_VERSION 2
530 struct qib_flash {
531 	/* flash layout version (QIB_FLASH_VERSION) */
532 	__u8 if_fversion;
533 	/* checksum protecting if_length bytes */
534 	__u8 if_csum;
535 	/*
536 	 * valid length (in use, protected by if_csum), including
537 	 * if_fversion and if_csum themselves)
538 	 */
539 	__u8 if_length;
540 	/* the GUID, in network order */
541 	__u8 if_guid[8];
542 	/* number of GUIDs to use, starting from if_guid */
543 	__u8 if_numguid;
544 	/* the (last 10 characters of) board serial number, in ASCII */
545 	char if_serial[12];
546 	/* board mfg date (YYYYMMDD ASCII) */
547 	char if_mfgdate[8];
548 	/* last board rework/test date (YYYYMMDD ASCII) */
549 	char if_testdate[8];
550 	/* logging of error counts, TBD */
551 	__u8 if_errcntp[4];
552 	/* powered on hours, updated at driver unload */
553 	__u8 if_powerhour[2];
554 	/* ASCII free-form comment field */
555 	char if_comment[32];
556 	/* Backwards compatible prefix for longer QLogic Serial Numbers */
557 	char if_sprefix[4];
558 	/* 82 bytes used, min flash size is 128 bytes */
559 	__u8 if_future[46];
560 };
561 
562 /*
563  * These are the counters implemented in the chip, and are listed in order.
564  * The InterCaps naming is taken straight from the chip spec.
565  */
566 struct qlogic_ib_counters {
567 	__u64 LBIntCnt;
568 	__u64 LBFlowStallCnt;
569 	__u64 TxSDmaDescCnt;    /* was Reserved1 */
570 	__u64 TxUnsupVLErrCnt;
571 	__u64 TxDataPktCnt;
572 	__u64 TxFlowPktCnt;
573 	__u64 TxDwordCnt;
574 	__u64 TxLenErrCnt;
575 	__u64 TxMaxMinLenErrCnt;
576 	__u64 TxUnderrunCnt;
577 	__u64 TxFlowStallCnt;
578 	__u64 TxDroppedPktCnt;
579 	__u64 RxDroppedPktCnt;
580 	__u64 RxDataPktCnt;
581 	__u64 RxFlowPktCnt;
582 	__u64 RxDwordCnt;
583 	__u64 RxLenErrCnt;
584 	__u64 RxMaxMinLenErrCnt;
585 	__u64 RxICRCErrCnt;
586 	__u64 RxVCRCErrCnt;
587 	__u64 RxFlowCtrlErrCnt;
588 	__u64 RxBadFormatCnt;
589 	__u64 RxLinkProblemCnt;
590 	__u64 RxEBPCnt;
591 	__u64 RxLPCRCErrCnt;
592 	__u64 RxBufOvflCnt;
593 	__u64 RxTIDFullErrCnt;
594 	__u64 RxTIDValidErrCnt;
595 	__u64 RxPKeyMismatchCnt;
596 	__u64 RxP0HdrEgrOvflCnt;
597 	__u64 RxP1HdrEgrOvflCnt;
598 	__u64 RxP2HdrEgrOvflCnt;
599 	__u64 RxP3HdrEgrOvflCnt;
600 	__u64 RxP4HdrEgrOvflCnt;
601 	__u64 RxP5HdrEgrOvflCnt;
602 	__u64 RxP6HdrEgrOvflCnt;
603 	__u64 RxP7HdrEgrOvflCnt;
604 	__u64 RxP8HdrEgrOvflCnt;
605 	__u64 RxP9HdrEgrOvflCnt;
606 	__u64 RxP10HdrEgrOvflCnt;
607 	__u64 RxP11HdrEgrOvflCnt;
608 	__u64 RxP12HdrEgrOvflCnt;
609 	__u64 RxP13HdrEgrOvflCnt;
610 	__u64 RxP14HdrEgrOvflCnt;
611 	__u64 RxP15HdrEgrOvflCnt;
612 	__u64 RxP16HdrEgrOvflCnt;
613 	__u64 IBStatusChangeCnt;
614 	__u64 IBLinkErrRecoveryCnt;
615 	__u64 IBLinkDownedCnt;
616 	__u64 IBSymbolErrCnt;
617 	__u64 RxVL15DroppedPktCnt;
618 	__u64 RxOtherLocalPhyErrCnt;
619 	__u64 PcieRetryBufDiagQwordCnt;
620 	__u64 ExcessBufferOvflCnt;
621 	__u64 LocalLinkIntegrityErrCnt;
622 	__u64 RxVlErrCnt;
623 	__u64 RxDlidFltrCnt;
624 };
625 
626 /*
627  * The next set of defines are for packet headers, and chip register
628  * and memory bits that are visible to and/or used by user-mode software.
629  */
630 
631 /* RcvHdrFlags bits */
632 #define QLOGIC_IB_RHF_LENGTH_MASK 0x7FF
633 #define QLOGIC_IB_RHF_LENGTH_SHIFT 0
634 #define QLOGIC_IB_RHF_RCVTYPE_MASK 0x7
635 #define QLOGIC_IB_RHF_RCVTYPE_SHIFT 11
636 #define QLOGIC_IB_RHF_EGRINDEX_MASK 0xFFF
637 #define QLOGIC_IB_RHF_EGRINDEX_SHIFT 16
638 #define QLOGIC_IB_RHF_SEQ_MASK 0xF
639 #define QLOGIC_IB_RHF_SEQ_SHIFT 0
640 #define QLOGIC_IB_RHF_HDRQ_OFFSET_MASK 0x7FF
641 #define QLOGIC_IB_RHF_HDRQ_OFFSET_SHIFT 4
642 #define QLOGIC_IB_RHF_H_ICRCERR   0x80000000
643 #define QLOGIC_IB_RHF_H_VCRCERR   0x40000000
644 #define QLOGIC_IB_RHF_H_PARITYERR 0x20000000
645 #define QLOGIC_IB_RHF_H_LENERR    0x10000000
646 #define QLOGIC_IB_RHF_H_MTUERR    0x08000000
647 #define QLOGIC_IB_RHF_H_IHDRERR   0x04000000
648 #define QLOGIC_IB_RHF_H_TIDERR    0x02000000
649 #define QLOGIC_IB_RHF_H_MKERR     0x01000000
650 #define QLOGIC_IB_RHF_H_IBERR     0x00800000
651 #define QLOGIC_IB_RHF_H_ERR_MASK  0xFF800000
652 #define QLOGIC_IB_RHF_L_USE_EGR   0x80000000
653 #define QLOGIC_IB_RHF_L_SWA       0x00008000
654 #define QLOGIC_IB_RHF_L_SWB       0x00004000
655 
656 /* qlogic_ib header fields */
657 #define QLOGIC_IB_I_VERS_MASK 0xF
658 #define QLOGIC_IB_I_VERS_SHIFT 28
659 #define QLOGIC_IB_I_CTXT_MASK 0xF
660 #define QLOGIC_IB_I_CTXT_SHIFT 24
661 #define QLOGIC_IB_I_TID_MASK 0x7FF
662 #define QLOGIC_IB_I_TID_SHIFT 13
663 #define QLOGIC_IB_I_OFFSET_MASK 0x1FFF
664 #define QLOGIC_IB_I_OFFSET_SHIFT 0
665 
666 /* K_PktFlags bits */
667 #define QLOGIC_IB_KPF_INTR 0x1
668 #define QLOGIC_IB_KPF_SUBCTXT_MASK 0x3
669 #define QLOGIC_IB_KPF_SUBCTXT_SHIFT 1
670 
671 #define QLOGIC_IB_MAX_SUBCTXT   4
672 
673 /* SendPIO per-buffer control */
674 #define QLOGIC_IB_SP_TEST    0x40
675 #define QLOGIC_IB_SP_TESTEBP 0x20
676 #define QLOGIC_IB_SP_TRIGGER_SHIFT  15
677 
678 /* SendPIOAvail bits */
679 #define QLOGIC_IB_SENDPIOAVAIL_BUSY_SHIFT 1
680 #define QLOGIC_IB_SENDPIOAVAIL_CHECK_SHIFT 0
681 
682 /* qlogic_ib header format */
683 struct qib_header {
684 	/*
685 	 * Version - 4 bits, Context - 4 bits, TID - 10 bits and Offset -
686 	 * 14 bits before ECO change ~28 Dec 03.  After that, Vers 4,
687 	 * Context 4, TID 11, offset 13.
688 	 */
689 	__le32 ver_ctxt_tid_offset;
690 	__le16 chksum;
691 	__le16 pkt_flags;
692 };
693 
694 /*
695  * qlogic_ib user message header format.
696  * This structure contains the first 4 fields common to all protocols
697  * that employ qlogic_ib.
698  */
699 struct qib_message_header {
700 	__be16 lrh[4];
701 	__be32 bth[3];
702 	/* fields below this point are in host byte order */
703 	struct qib_header iph;
704 	/* fields below are simplified, but should match PSM */
705 	/* some are accessed by driver when packet spliting is needed */
706 	__u8 sub_opcode;
707 	__u8 flags;
708 	__u16 commidx;
709 	__u32 ack_seq_num;
710 	__u8 flowid;
711 	__u8 hdr_dlen;
712 	__u16 mqhdr;
713 	__u32 uwords[4];
714 };
715 
716 /* sequence number bits for message */
717 union qib_seqnum {
718 	struct {
719 		__u32 seq:11;
720 		__u32 gen:8;
721 		__u32 flow:5;
722 	};
723 	struct {
724 		__u32 pkt:16;
725 		__u32 msg:8;
726 	};
727 	__u32 val;
728 };
729 
730 /* qib receiving-dma tid-session-member */
731 struct qib_tid_session_member {
732 	__u16 tid;
733 	__u16 offset;
734 	__u16 length;
735 };
736 
737 /* IB - LRH header consts */
738 #define QIB_LRH_GRH 0x0003      /* 1. word of IB LRH - next header: GRH */
739 #define QIB_LRH_BTH 0x0002      /* 1. word of IB LRH - next header: BTH */
740 
741 /* misc. */
742 #define SIZE_OF_CRC 1
743 
744 #define QIB_DEFAULT_P_KEY 0xFFFF
745 #define QIB_PSN_MASK 0xFFFFFF
746 #define QIB_EAGER_TID_ID QLOGIC_IB_I_TID_MASK
747 #define QIB_MULTICAST_QPN 0xFFFFFF
748 
749 /* Receive Header Queue: receive type (from qlogic_ib) */
750 #define RCVHQ_RCV_TYPE_EXPECTED  0
751 #define RCVHQ_RCV_TYPE_EAGER     1
752 #define RCVHQ_RCV_TYPE_NON_KD    2
753 #define RCVHQ_RCV_TYPE_ERROR     3
754 
755 #define QIB_HEADER_QUEUE_WORDS 9
756 
757 /* functions for extracting fields from rcvhdrq entries for the driver.
758  */
759 static inline __u32 qib_hdrget_err_flags(const __le32 *rbuf)
760 {
761 	return __le32_to_cpu(rbuf[1]) & QLOGIC_IB_RHF_H_ERR_MASK;
762 }
763 
764 static inline __u32 qib_hdrget_rcv_type(const __le32 *rbuf)
765 {
766 	return (__le32_to_cpu(rbuf[0]) >> QLOGIC_IB_RHF_RCVTYPE_SHIFT) &
767 		QLOGIC_IB_RHF_RCVTYPE_MASK;
768 }
769 
770 static inline __u32 qib_hdrget_length_in_bytes(const __le32 *rbuf)
771 {
772 	return ((__le32_to_cpu(rbuf[0]) >> QLOGIC_IB_RHF_LENGTH_SHIFT) &
773 		QLOGIC_IB_RHF_LENGTH_MASK) << 2;
774 }
775 
776 static inline __u32 qib_hdrget_index(const __le32 *rbuf)
777 {
778 	return (__le32_to_cpu(rbuf[0]) >> QLOGIC_IB_RHF_EGRINDEX_SHIFT) &
779 		QLOGIC_IB_RHF_EGRINDEX_MASK;
780 }
781 
782 static inline __u32 qib_hdrget_seq(const __le32 *rbuf)
783 {
784 	return (__le32_to_cpu(rbuf[1]) >> QLOGIC_IB_RHF_SEQ_SHIFT) &
785 		QLOGIC_IB_RHF_SEQ_MASK;
786 }
787 
788 static inline __u32 qib_hdrget_offset(const __le32 *rbuf)
789 {
790 	return (__le32_to_cpu(rbuf[1]) >> QLOGIC_IB_RHF_HDRQ_OFFSET_SHIFT) &
791 		QLOGIC_IB_RHF_HDRQ_OFFSET_MASK;
792 }
793 
794 static inline __u32 qib_hdrget_use_egr_buf(const __le32 *rbuf)
795 {
796 	return __le32_to_cpu(rbuf[0]) & QLOGIC_IB_RHF_L_USE_EGR;
797 }
798 #endif                          /* _QIB_COMMON_H */
799