2 * Copyright (c) 2006, 2007 QLogic Corporation. All rights reserved.
3 * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved.
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
34 #ifndef _IPATH_COMMON_H
35 #define _IPATH_COMMON_H
38 * This file contains defines, structures, etc. that are used
39 * to communicate between kernel and user code.
43 /* This is the IEEE-assigned OUI for QLogic Inc. InfiniPath */
44 #define IPATH_SRC_OUI_1 0x00
45 #define IPATH_SRC_OUI_2 0x11
46 #define IPATH_SRC_OUI_3 0x75
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.
52 #define IPS_PROTO_VERSION 2
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 * IPATH_VERBOSE_TRACING define as 1 if you want additional tracing in
59 * IPATH_TRACE_REGWRITES define as 1 if you want register writes to be
60 * traced in faspath code
61 * _IPATH_TRACING define as 0 if you want to remove all tracing in a
63 * _IPATH_DEBUGGING define as 0 if you want to remove debug prints
67 * The value in the BTH QP field that InfiniPath uses to differentiate
68 * an infinipath protocol IB packet vs standard IB transport
70 #define IPATH_KD_QP 0x656b79
73 * valid states passed to ipath_set_linkstate() user call
75 #define IPATH_IB_LINKDOWN 0
76 #define IPATH_IB_LINKARM 1
77 #define IPATH_IB_LINKACTIVE 2
78 #define IPATH_IB_LINKINIT 3
79 #define IPATH_IB_LINKDOWN_SLEEP 4
80 #define IPATH_IB_LINKDOWN_DISABLE 5
81 #define IPATH_IB_LINK_LOOPBACK 6 /* enable local loopback */
82 #define IPATH_IB_LINK_EXTERNAL 7 /* normal, disable local loopback */
85 * These 3 values (SDR and DDR may be ORed for auto-speed
86 * negotiation) are used for the 3rd argument to path_f_set_ib_cfg
87 * with cmd IPATH_IB_CFG_SPD_ENB, by direct calls or via sysfs. They
88 * are also the the possible values for ipath_link_speed_enabled and active
89 * The values were chosen to match values used within the IB spec.
91 #define IPATH_IB_SDR 1
92 #define IPATH_IB_DDR 2
95 * stats maintained by the driver. For now, at least, this is global
96 * to all minor devices.
98 struct infinipath_stats
{
99 /* number of interrupts taken */
101 /* number of interrupts for errors */
103 /* number of errors from chip (not incl. packet errors or CRC) */
105 /* number of packet errors from chip other than CRC */
107 /* number of packets with CRC errors (ICRC and VCRC) */
109 /* number of hardware errors reported (parity, etc.) */
111 /* number of times IB link changed state unexpectedly */
113 __u64 sps_unused
; /* was fastrcvint, no longer implemented */
114 /* number of kernel (port0) packets received */
116 /* number of "ethernet" packets sent by driver */
117 __u64 sps_ether_spkts
;
118 /* number of "ethernet" packets received by driver */
119 __u64 sps_ether_rpkts
;
120 /* number of SMA packets sent by driver. Obsolete. */
122 /* number of SMA packets received by driver. Obsolete. */
124 /* number of times all ports rcvhdrq was full and packet dropped */
126 /* number of times all ports egrtid was full and packet dropped */
129 * number of times we tried to send from driver, but no pio buffers
133 /* number of ports currently open */
135 /* list of pkeys (other than default) accepted (0 means not set) */
137 __u16 sps_unused16
[4]; /* available; maintaining compatible layout */
138 /* number of user ports per chip (not IB ports) */
140 /* not our interrupt, or already handled */
142 /* max number of packets handled per receive call */
143 __u32 sps_maxpkts_call
;
144 /* avg number of packets handled per receive call */
145 __u32 sps_avgpkts_call
;
146 /* total number of pages locked */
148 /* total number of pages unlocked */
149 __u64 sps_pageunlocks
;
151 * Number of packets dropped in kernel other than errors (ether
152 * packets if ipath not configured, etc.)
155 __u64 sps_txeparity
; /* PIO buffer parity error, recovered */
156 /* pad for future growth */
161 * These are the status bits readable (in ascii form, 64bit value)
162 * from the "status" sysfs file.
164 #define IPATH_STATUS_INITTED 0x1 /* basic initialization done */
165 #define IPATH_STATUS_DISABLED 0x2 /* hardware disabled */
166 /* Device has been disabled via admin request */
167 #define IPATH_STATUS_ADMIN_DISABLED 0x4
168 /* Chip has been found and initted */
169 #define IPATH_STATUS_CHIP_PRESENT 0x20
170 /* IB link is at ACTIVE, usable for data traffic */
171 #define IPATH_STATUS_IB_READY 0x40
172 /* link is configured, LID, MTU, etc. have been set */
173 #define IPATH_STATUS_IB_CONF 0x80
174 /* no link established, probably no cable */
175 #define IPATH_STATUS_IB_NOCABLE 0x100
176 /* A Fatal hardware error has occurred. */
177 #define IPATH_STATUS_HWERROR 0x200
180 * The list of usermode accessible registers. Also see Reg_* later in file.
182 typedef enum _ipath_ureg
{
183 /* (RO) DMA RcvHdr to be used next. */
185 /* (RW) RcvHdr entry to be processed next by host. */
187 /* (RO) Index of next Eager index to use. */
188 ur_rcvegrindextail
= 2,
189 /* (RW) Eager TID to be processed next */
190 ur_rcvegrindexhead
= 3,
191 /* For internal use only; max register number. */
195 /* bit values for spi_runtime_flags */
196 #define IPATH_RUNTIME_HT 0x1
197 #define IPATH_RUNTIME_PCIE 0x2
198 #define IPATH_RUNTIME_FORCE_WC_ORDER 0x4
199 #define IPATH_RUNTIME_RCVHDR_COPY 0x8
200 #define IPATH_RUNTIME_MASTER 0x10
201 /* 0x20 and 0x40 are no longer used, but are reserved for ABI compatibility */
202 #define IPATH_RUNTIME_FORCE_PIOAVAIL 0x400
203 #define IPATH_RUNTIME_PIO_REGSWAPPED 0x800
206 * This structure is returned by ipath_userinit() immediately after
207 * open to get implementation-specific info, and info specific to this
210 * This struct must have explict pad fields where type sizes
211 * may result in different alignments between 32 and 64 bit
212 * programs, since the 64 bit * bit kernel requires the user code
213 * to have matching offsets
215 struct ipath_base_info
{
216 /* version of hardware, for feature checking. */
217 __u32 spi_hw_version
;
218 /* version of software, for feature checking. */
219 __u32 spi_sw_version
;
220 /* InfiniPath port assigned, goes into sent packets */
224 * IB MTU, packets IB data must be less than this.
225 * The MTU is in bytes, and will be a multiple of 4 bytes.
229 * Size of a PIO buffer. Any given packet's total size must be less
230 * than this (in words). Included is the starting control word, so
231 * if 513 is returned, then total pkt size is 512 words or less.
234 /* size of the TID cache in infinipath, in entries */
236 /* size of the TID Eager list in infinipath, in entries */
238 /* size of a single receive header queue entry in words. */
239 __u32 spi_rcvhdrent_size
;
241 * Count of receive header queue entries allocated.
242 * This may be less than the spu_rcvhdrcnt passed in!.
244 __u32 spi_rcvhdr_cnt
;
246 /* per-chip and other runtime features bitmap (IPATH_RUNTIME_*) */
247 __u32 spi_runtime_flags
;
249 /* address where receive buffer queue is mapped into */
250 __u64 spi_rcvhdr_base
;
254 /* base address of eager TID receive buffers. */
255 __u64 spi_rcv_egrbufs
;
257 /* Allocated by initialization code, not by protocol. */
260 * Size of each TID buffer in host memory, starting at
261 * spi_rcv_egrbufs. The buffers are virtually contiguous.
263 __u32 spi_rcv_egrbufsize
;
265 * The special QP (queue pair) value that identifies an infinipath
266 * protocol packet from standard IB packets. More, probably much
272 * User register base for init code, not to be used directly by
273 * protocol or applications.
275 __u64 __spi_uregbase
;
277 * Maximum buffer size in bytes that can be used in a single TID
278 * entry (assuming the buffer is aligned to this boundary). This is
279 * the minimum of what the hardware and software support Guaranteed
280 * to be a power of 2.
282 __u32 spi_tid_maxsize
;
284 * alignment of each pio send buffer (byte count
285 * to add to spi_piobufbase to get to second buffer)
289 * The index of the first pio buffer available to this process;
290 * needed to do lookup in spi_pioavailaddr; not added to
294 /* number of buffers mapped for this process */
298 * Base address of writeonly pio buffers for this process.
299 * Each buffer has spi_piosize words, and is aligned on spi_pioalign
300 * boundaries. spi_piocnt buffers are mapped from this address
302 __u64 spi_piobufbase
;
305 * Base address of readonly memory copy of the pioavail registers.
306 * There are 2 bits for each buffer.
308 __u64 spi_pioavailaddr
;
311 * Address where driver updates a copy of the interface and driver
312 * status (IPATH_STATUS_*) as a 64 bit value. It's followed by a
313 * string indicating hardware error, if there was one.
317 /* number of chip ports available to user processes */
319 /* unit number of chip we are using */
321 /* num bufs in each contiguous set */
322 __u32 spi_rcv_egrperchunk
;
323 /* size in bytes of each contiguous set */
324 __u32 spi_rcv_egrchunksize
;
325 /* total size of mmap to cover full rcvegrbuffers */
326 __u32 spi_rcv_egrbuftotlen
;
327 __u32 spi_filler_for_align
;
328 /* address of readonly memory copy of the rcvhdrq tail register. */
329 __u64 spi_rcvhdr_tailaddr
;
331 /* shared memory pages for subports if port is shared */
332 __u64 spi_subport_uregbase
;
333 __u64 spi_subport_rcvegrbuf
;
334 __u64 spi_subport_rcvhdr_base
;
336 /* shared memory page for hardware port if it is shared */
337 __u64 spi_port_uregbase
;
338 __u64 spi_port_rcvegrbuf
;
339 __u64 spi_port_rcvhdr_base
;
340 __u64 spi_port_rcvhdr_tailaddr
;
342 } __attribute__ ((aligned(8)));
346 * This version number is given to the driver by the user code during
347 * initialization in the spu_userversion field of ipath_user_info, so
348 * the driver can check for compatibility with user code.
350 * The major version changes when data structures
351 * change in an incompatible way. The driver must be the same or higher
352 * for initialization to succeed. In some cases, a higher version
353 * driver will not interoperate with older software, and initialization
354 * will return an error.
356 #define IPATH_USER_SWMAJOR 1
359 * Minor version differences are always compatible
360 * a within a major version, however if user software is larger
361 * than driver software, some new features and/or structure fields
362 * may not be implemented; the user code must deal with this if it
363 * cares, or it must abort after initialization reports the difference.
365 #define IPATH_USER_SWMINOR 6
367 #define IPATH_USER_SWVERSION ((IPATH_USER_SWMAJOR<<16) | IPATH_USER_SWMINOR)
369 #define IPATH_KERN_TYPE 0
372 * Similarly, this is the kernel version going back to the user. It's
373 * slightly different, in that we want to tell if the driver was built as
374 * part of a QLogic release, or from the driver from openfabrics.org,
375 * kernel.org, or a standard distribution, for support reasons.
376 * The high bit is 0 for non-QLogic and 1 for QLogic-built/supplied.
378 * It's returned by the driver to the user code during initialization in the
379 * spi_sw_version field of ipath_base_info, so the user code can in turn
380 * check for compatibility with the kernel.
382 #define IPATH_KERN_SWVERSION ((IPATH_KERN_TYPE<<31) | IPATH_USER_SWVERSION)
385 * This structure is passed to ipath_userinit() to tell the driver where
386 * user code buffers are, sizes, etc. The offsets and sizes of the
387 * fields must remain unchanged, for binary compatibility. It can
388 * be extended, if userversion is changed so user code can tell, if needed
390 struct ipath_user_info
{
392 * version of user software, to detect compatibility issues.
393 * Should be set to IPATH_USER_SWVERSION.
395 __u32 spu_userversion
;
397 /* desired number of receive header queue entries */
400 /* size of struct base_info to write to */
401 __u32 spu_base_info_size
;
404 * number of words in KD protocol header
405 * This tells InfiniPath how many words to copy to rcvhdrq. If 0,
406 * kernel uses a default. Once set, attempts to set any other value
407 * are an error (EAGAIN) until driver is reloaded.
409 __u32 spu_rcvhdrsize
;
412 * If two or more processes wish to share a port, each process
413 * must set the spu_subport_cnt and spu_subport_id to the same
414 * values. The only restriction on the spu_subport_id is that
415 * it be unique for a given node.
417 __u16 spu_subport_cnt
;
418 __u16 spu_subport_id
;
420 __u32 spu_unused
; /* kept for compatible layout */
423 * address of struct base_info to write to
427 } __attribute__ ((aligned(8)));
431 #define IPATH_CMD_MIN 16
433 #define __IPATH_CMD_USER_INIT 16 /* old set up userspace (for old user code) */
434 #define IPATH_CMD_PORT_INFO 17 /* find out what resources we got */
435 #define IPATH_CMD_RECV_CTRL 18 /* control receipt of packets */
436 #define IPATH_CMD_TID_UPDATE 19 /* update expected TID entries */
437 #define IPATH_CMD_TID_FREE 20 /* free expected TID entries */
438 #define IPATH_CMD_SET_PART_KEY 21 /* add partition key */
439 #define __IPATH_CMD_SLAVE_INFO 22 /* return info on slave processes (for old user code) */
440 #define IPATH_CMD_ASSIGN_PORT 23 /* allocate HCA and port */
441 #define IPATH_CMD_USER_INIT 24 /* set up userspace */
442 #define IPATH_CMD_UNUSED_1 25
443 #define IPATH_CMD_UNUSED_2 26
444 #define IPATH_CMD_PIOAVAILUPD 27 /* force an update of PIOAvail reg */
445 #define IPATH_CMD_POLL_TYPE 28 /* set the kind of polling we want */
446 #define IPATH_CMD_ARMLAUNCH_CTRL 29 /* armlaunch detection control */
448 #define IPATH_CMD_MAX 29
453 #define IPATH_POLL_TYPE_URGENT 0x01
454 #define IPATH_POLL_TYPE_OVERFLOW 0x02
456 struct ipath_port_info
{
457 __u32 num_active
; /* number of active units */
458 __u32 unit
; /* unit (chip) assigned to caller */
459 __u16 port
; /* port on unit assigned to caller */
460 __u16 subport
; /* subport on unit assigned to caller */
461 __u16 num_ports
; /* number of ports available on unit */
462 __u16 num_subports
; /* number of subports opened on port */
465 struct ipath_tid_info
{
467 /* make structure same size in 32 and 64 bit */
469 /* virtual address of first page in transfer */
471 /* pointer (same size 32/64 bit) to __u16 tid array */
475 * pointer (same size 32/64 bit) to bitmap of TIDs used
476 * for this call; checked for being large enough at open
482 __u32 type
; /* command type */
484 struct ipath_tid_info tid_info
;
485 struct ipath_user_info user_info
;
486 /* address in userspace of struct ipath_port_info to
489 /* enable/disable receipt of packets */
491 /* enable/disable armlaunch errors (non-zero to enable) */
492 __u32 armlaunch_ctrl
;
493 /* partition key to set */
495 /* user address of __u32 bitmask of active slaves */
496 __u64 slave_mask_addr
;
497 /* type of polling we want */
503 /* Pointer to data, but same size 32 and 64 bit */
507 * Length of data; don't need 64 bits, but want
508 * ipath_sendpkt to remain same size as before 32 bit changes, so...
514 * Describes a single packet for send. Each packet can have one or more
515 * buffers, but the total length (exclusive of IB headers) must be less
516 * than the MTU, and if using the PIO method, entire packet length,
517 * including IB headers, must be less than the ipath_piosize value (words).
518 * Use of this necessitates including sys/uio.h
520 struct __ipath_sendpkt
{
521 __u32 sps_flags
; /* flags for packet (TBD) */
522 __u32 sps_cnt
; /* number of entries to use in sps_iov */
523 /* array of iov's describing packet. TEMPORARY */
524 struct ipath_iovec sps_iov
[4];
528 * diagnostics can send a packet by "writing" one of the following
529 * two structs to diag data special file
530 * The first is the legacy version for backward compatibility
532 struct ipath_diag_pkt
{
538 /* The second diag_pkt struct is the expanded version that allows
539 * more control over the packet, specifically, by allowing a custom
540 * pbc (+ extra) qword, so that special modes and deliberate
541 * changes to CRCs can be used. The elements were also re-ordered
542 * for better alignment and to avoid padding issues.
544 struct ipath_diag_xpkt
{
552 * Data layout in I2C flash (for GUID, etc.)
553 * All fields are little-endian binary unless otherwise stated
555 #define IPATH_FLASH_VERSION 2
557 /* flash layout version (IPATH_FLASH_VERSION) */
559 /* checksum protecting if_length bytes */
562 * valid length (in use, protected by if_csum), including
563 * if_fversion and if_csum themselves)
566 /* the GUID, in network order */
568 /* number of GUIDs to use, starting from if_guid */
570 /* the (last 10 characters of) board serial number, in ASCII */
572 /* board mfg date (YYYYMMDD ASCII) */
574 /* last board rework/test date (YYYYMMDD ASCII) */
576 /* logging of error counts, TBD */
578 /* powered on hours, updated at driver unload */
579 __u8 if_powerhour
[2];
580 /* ASCII free-form comment field */
582 /* Backwards compatible prefix for longer QLogic Serial Numbers */
584 /* 82 bytes used, min flash size is 128 bytes */
589 * These are the counters implemented in the chip, and are listed in order.
590 * The InterCaps naming is taken straight from the chip spec.
592 struct infinipath_counters
{
594 __u64 LBFlowStallCnt
;
595 __u64 TxSDmaDescCnt
; /* was Reserved1 */
596 __u64 TxUnsupVLErrCnt
;
601 __u64 TxMaxMinLenErrCnt
;
603 __u64 TxFlowStallCnt
;
604 __u64 TxDroppedPktCnt
;
605 __u64 RxDroppedPktCnt
;
610 __u64 RxMaxMinLenErrCnt
;
613 __u64 RxFlowCtrlErrCnt
;
614 __u64 RxBadFormatCnt
;
615 __u64 RxLinkProblemCnt
;
619 __u64 RxTIDFullErrCnt
;
620 __u64 RxTIDValidErrCnt
;
621 __u64 RxPKeyMismatchCnt
;
622 __u64 RxP0HdrEgrOvflCnt
;
623 __u64 RxP1HdrEgrOvflCnt
;
624 __u64 RxP2HdrEgrOvflCnt
;
625 __u64 RxP3HdrEgrOvflCnt
;
626 __u64 RxP4HdrEgrOvflCnt
;
627 __u64 RxP5HdrEgrOvflCnt
;
628 __u64 RxP6HdrEgrOvflCnt
;
629 __u64 RxP7HdrEgrOvflCnt
;
630 __u64 RxP8HdrEgrOvflCnt
;
631 __u64 RxP9HdrEgrOvflCnt
; /* was Reserved6 */
632 __u64 RxP10HdrEgrOvflCnt
; /* was Reserved7 */
633 __u64 RxP11HdrEgrOvflCnt
; /* new for IBA7220 */
634 __u64 RxP12HdrEgrOvflCnt
; /* new for IBA7220 */
635 __u64 RxP13HdrEgrOvflCnt
; /* new for IBA7220 */
636 __u64 RxP14HdrEgrOvflCnt
; /* new for IBA7220 */
637 __u64 RxP15HdrEgrOvflCnt
; /* new for IBA7220 */
638 __u64 RxP16HdrEgrOvflCnt
; /* new for IBA7220 */
639 __u64 IBStatusChangeCnt
;
640 __u64 IBLinkErrRecoveryCnt
;
641 __u64 IBLinkDownedCnt
;
642 __u64 IBSymbolErrCnt
;
643 /* The following are new for IBA7220 */
644 __u64 RxVL15DroppedPktCnt
;
645 __u64 RxOtherLocalPhyErrCnt
;
646 __u64 PcieRetryBufDiagQwordCnt
;
647 __u64 ExcessBufferOvflCnt
;
648 __u64 LocalLinkIntegrityErrCnt
;
654 * The next set of defines are for packet headers, and chip register
655 * and memory bits that are visible to and/or used by user-mode software
656 * The other bits that are used only by the driver or diags are in
660 /* RcvHdrFlags bits */
661 #define INFINIPATH_RHF_LENGTH_MASK 0x7FF
662 #define INFINIPATH_RHF_LENGTH_SHIFT 0
663 #define INFINIPATH_RHF_RCVTYPE_MASK 0x7
664 #define INFINIPATH_RHF_RCVTYPE_SHIFT 11
665 #define INFINIPATH_RHF_EGRINDEX_MASK 0x7FF
666 #define INFINIPATH_RHF_EGRINDEX_SHIFT 16
667 #define INFINIPATH_RHF_H_ICRCERR 0x80000000
668 #define INFINIPATH_RHF_H_VCRCERR 0x40000000
669 #define INFINIPATH_RHF_H_PARITYERR 0x20000000
670 #define INFINIPATH_RHF_H_LENERR 0x10000000
671 #define INFINIPATH_RHF_H_MTUERR 0x08000000
672 #define INFINIPATH_RHF_H_IHDRERR 0x04000000
673 #define INFINIPATH_RHF_H_TIDERR 0x02000000
674 #define INFINIPATH_RHF_H_MKERR 0x01000000
675 #define INFINIPATH_RHF_H_IBERR 0x00800000
676 #define INFINIPATH_RHF_L_SWA 0x00008000
677 #define INFINIPATH_RHF_L_SWB 0x00004000
679 /* infinipath header fields */
680 #define INFINIPATH_I_VERS_MASK 0xF
681 #define INFINIPATH_I_VERS_SHIFT 28
682 #define INFINIPATH_I_PORT_MASK 0xF
683 #define INFINIPATH_I_PORT_SHIFT 24
684 #define INFINIPATH_I_TID_MASK 0x7FF
685 #define INFINIPATH_I_TID_SHIFT 13
686 #define INFINIPATH_I_OFFSET_MASK 0x1FFF
687 #define INFINIPATH_I_OFFSET_SHIFT 0
689 /* K_PktFlags bits */
690 #define INFINIPATH_KPF_INTR 0x1
691 #define INFINIPATH_KPF_SUBPORT_MASK 0x3
692 #define INFINIPATH_KPF_SUBPORT_SHIFT 1
694 #define INFINIPATH_MAX_SUBPORT 4
696 /* SendPIO per-buffer control */
697 #define INFINIPATH_SP_TEST 0x40
698 #define INFINIPATH_SP_TESTEBP 0x20
700 /* SendPIOAvail bits */
701 #define INFINIPATH_SENDPIOAVAIL_BUSY_SHIFT 1
702 #define INFINIPATH_SENDPIOAVAIL_CHECK_SHIFT 0
704 /* infinipath header format */
705 struct ipath_header
{
707 * Version - 4 bits, Port - 4 bits, TID - 10 bits and Offset -
708 * 14 bits before ECO change ~28 Dec 03. After that, Vers 4,
709 * Port 4, TID 11, offset 13.
711 __le32 ver_port_tid_offset
;
716 /* infinipath user message header format.
717 * This structure contains the first 4 fields common to all protocols
718 * that employ infinipath.
720 struct ipath_message_header
{
723 /* fields below this point are in host byte order */
724 struct ipath_header iph
;
728 /* infinipath ethernet header format */
729 struct ether_header
{
732 struct ipath_header iph
;
740 /* MUST be of word size due to PIO write requirements */
745 __u8 unused
[2]; /* currently unused */
749 /* IB - LRH header consts */
750 #define IPATH_LRH_GRH 0x0003 /* 1. word of IB LRH - next header: GRH */
751 #define IPATH_LRH_BTH 0x0002 /* 1. word of IB LRH - next header: BTH */
754 #define SIZE_OF_CRC 1
756 #define IPATH_DEFAULT_P_KEY 0xFFFF
757 #define IPATH_PERMISSIVE_LID 0xFFFF
758 #define IPATH_AETH_CREDIT_SHIFT 24
759 #define IPATH_AETH_CREDIT_MASK 0x1F
760 #define IPATH_AETH_CREDIT_INVAL 0x1F
761 #define IPATH_PSN_MASK 0xFFFFFF
762 #define IPATH_MSN_MASK 0xFFFFFF
763 #define IPATH_QPN_MASK 0xFFFFFF
764 #define IPATH_MULTICAST_LID_BASE 0xC000
765 #define IPATH_MULTICAST_QPN 0xFFFFFF
767 /* Receive Header Queue: receive type (from infinipath) */
768 #define RCVHQ_RCV_TYPE_EXPECTED 0
769 #define RCVHQ_RCV_TYPE_EAGER 1
770 #define RCVHQ_RCV_TYPE_NON_KD 2
771 #define RCVHQ_RCV_TYPE_ERROR 3
774 /* sub OpCodes - ith4x */
775 #define IPATH_ITH4X_OPCODE_ENCAP 0x81
776 #define IPATH_ITH4X_OPCODE_LID_ARP 0x82
778 #define IPATH_HEADER_QUEUE_WORDS 9
780 /* functions for extracting fields from rcvhdrq entries for the driver.
782 static inline __u32
ipath_hdrget_err_flags(const __le32
* rbuf
)
784 return __le32_to_cpu(rbuf
[1]);
787 static inline __u32
ipath_hdrget_rcv_type(const __le32
* rbuf
)
789 return (__le32_to_cpu(rbuf
[0]) >> INFINIPATH_RHF_RCVTYPE_SHIFT
)
790 & INFINIPATH_RHF_RCVTYPE_MASK
;
793 static inline __u32
ipath_hdrget_length_in_bytes(const __le32
* rbuf
)
795 return ((__le32_to_cpu(rbuf
[0]) >> INFINIPATH_RHF_LENGTH_SHIFT
)
796 & INFINIPATH_RHF_LENGTH_MASK
) << 2;
799 static inline __u32
ipath_hdrget_index(const __le32
* rbuf
)
801 return (__le32_to_cpu(rbuf
[0]) >> INFINIPATH_RHF_EGRINDEX_SHIFT
)
802 & INFINIPATH_RHF_EGRINDEX_MASK
;
805 static inline __u32
ipath_hdrget_ipath_ver(__le32 hdrword
)
807 return (__le32_to_cpu(hdrword
) >> INFINIPATH_I_VERS_SHIFT
)
808 & INFINIPATH_I_VERS_MASK
;
811 #endif /* _IPATH_COMMON_H */