264 lines
7.3 KiB
C
264 lines
7.3 KiB
C
#ifndef IPS_COMMON_H
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#define IPS_COMMON_H
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/*
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* Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "ipath_common.h"
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struct ipath_header {
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/*
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* Version - 4 bits, Port - 4 bits, TID - 10 bits and Offset -
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* 14 bits before ECO change ~28 Dec 03. After that, Vers 4,
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* Port 3, TID 11, offset 14.
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*/
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__le32 ver_port_tid_offset;
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__le16 chksum;
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__le16 pkt_flags;
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};
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struct ips_message_header {
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__be16 lrh[4];
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__be32 bth[3];
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/* fields below this point are in host byte order */
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struct ipath_header iph;
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__u8 sub_opcode;
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__u8 flags;
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__u16 src_rank;
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/* 24 bits. The upper 8 bit is available for other use */
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union {
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struct {
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unsigned ack_seq_num:24;
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unsigned port:4;
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unsigned unused:4;
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};
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__u32 ack_seq_num_org;
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};
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__u8 expected_tid_session_id;
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__u8 tinylen; /* to aid MPI */
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union {
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__u16 tag; /* to aid MPI */
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__u16 mqhdr; /* for PSM MQ */
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};
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union {
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__u32 mpi[4]; /* to aid MPI */
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__u32 data[4];
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__u64 mq[2]; /* for PSM MQ */
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struct {
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__u16 mtu;
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__u8 major_ver;
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__u8 minor_ver;
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__u32 not_used; //free
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__u32 run_id;
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__u32 client_ver;
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};
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};
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};
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struct ether_header {
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__be16 lrh[4];
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__be32 bth[3];
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struct ipath_header iph;
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__u8 sub_opcode;
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__u8 cmd;
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__be16 lid;
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__u16 mac[3];
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__u8 frag_num;
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__u8 seq_num;
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__le32 len;
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/* MUST be of word size due to PIO write requirements */
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__le32 csum;
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__le16 csum_offset;
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__le16 flags;
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__u16 first_2_bytes;
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__u8 unused[2]; /* currently unused */
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};
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/*
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* The PIO buffer used for sending infinipath messages must only be written
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* in 32-bit words, all the data must be written, and no writes can occur
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* after the last word is written (which transfers "ownership" of the buffer
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* to the chip and triggers the message to be sent).
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* Since the Linux sk_buff structure can be recursive, non-aligned, and
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* any number of bytes in each segment, we use the following structure
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* to keep information about the overall state of the copy operation.
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* This is used to save the information needed to store the checksum
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* in the right place before sending the last word to the hardware and
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* to buffer the last 0-3 bytes of non-word sized segments.
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*/
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struct copy_data_s {
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struct ether_header *hdr;
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/* addr of PIO buf to write csum to */
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__u32 __iomem *csum_pio;
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__u32 __iomem *to; /* addr of PIO buf to write data to */
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__u32 device; /* which device to allocate PIO bufs from */
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__s32 error; /* set if there is an error. */
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__s32 extra; /* amount of data saved in u.buf below */
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__u32 len; /* total length to send in bytes */
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__u32 flen; /* frament length in words */
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__u32 csum; /* partial IP checksum */
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__u32 pos; /* position for partial checksum */
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__u32 offset; /* offset to where data currently starts */
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__s32 checksum_calc; /* set to 1 when csum has been calculated */
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struct sk_buff *skb;
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union {
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__u32 w;
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__u8 buf[4];
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} u;
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};
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/* IB - LRH header consts */
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#define IPS_LRH_GRH 0x0003 /* 1. word of IB LRH - next header: GRH */
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#define IPS_LRH_BTH 0x0002 /* 1. word of IB LRH - next header: BTH */
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#define IPS_OFFSET 0
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/*
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* defines the cut-off point between the header queue and eager/expected
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* TID queue
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*/
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#define NUM_OF_EXTRA_WORDS_IN_HEADER_QUEUE \
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((sizeof(struct ips_message_header) - \
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offsetof(struct ips_message_header, iph)) >> 2)
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/* OpCodes */
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#define OPCODE_IPS 0xC0
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#define OPCODE_ITH4X 0xC1
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/* OpCode 30 is use by stand-alone test programs */
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#define OPCODE_RAW_DATA 0xDE
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/* last OpCode (31) is reserved for test */
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#define OPCODE_TEST 0xDF
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/* sub OpCodes - ips */
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#define OPCODE_SEQ_DATA 0x01
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#define OPCODE_SEQ_CTRL 0x02
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#define OPCODE_SEQ_MQ_DATA 0x03
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#define OPCODE_SEQ_MQ_CTRL 0x04
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#define OPCODE_ACK 0x10
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#define OPCODE_NAK 0x11
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#define OPCODE_ERR_CHK 0x20
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#define OPCODE_ERR_CHK_PLS 0x21
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#define OPCODE_STARTUP 0x30
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#define OPCODE_STARTUP_ACK 0x31
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#define OPCODE_STARTUP_NAK 0x32
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#define OPCODE_STARTUP_EXT 0x34
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#define OPCODE_STARTUP_ACK_EXT 0x35
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#define OPCODE_STARTUP_NAK_EXT 0x36
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#define OPCODE_TIDS_RELEASE 0x40
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#define OPCODE_TIDS_RELEASE_CONFIRM 0x41
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#define OPCODE_CLOSE 0x50
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#define OPCODE_CLOSE_ACK 0x51
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/*
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* like OPCODE_CLOSE, but no complaint if other side has already closed.
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* Used when doing abort(), MPI_Abort(), etc.
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*/
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#define OPCODE_ABORT 0x52
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/* sub OpCodes - ith4x */
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#define OPCODE_ENCAP 0x81
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#define OPCODE_LID_ARP 0x82
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/* Receive Header Queue: receive type (from infinipath) */
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#define RCVHQ_RCV_TYPE_EXPECTED 0
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#define RCVHQ_RCV_TYPE_EAGER 1
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#define RCVHQ_RCV_TYPE_NON_KD 2
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#define RCVHQ_RCV_TYPE_ERROR 3
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/* misc. */
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#define SIZE_OF_CRC 1
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#define EAGER_TID_ID INFINIPATH_I_TID_MASK
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#define IPS_DEFAULT_P_KEY 0xFFFF
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#define IPS_PERMISSIVE_LID 0xFFFF
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#define IPS_MULTICAST_LID_BASE 0xC000
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#define IPS_AETH_CREDIT_SHIFT 24
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#define IPS_AETH_CREDIT_MASK 0x1F
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#define IPS_AETH_CREDIT_INVAL 0x1F
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#define IPS_PSN_MASK 0xFFFFFF
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#define IPS_MSN_MASK 0xFFFFFF
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#define IPS_QPN_MASK 0xFFFFFF
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#define IPS_MULTICAST_QPN 0xFFFFFF
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/* functions for extracting fields from rcvhdrq entries */
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static inline __u32 ips_get_hdr_err_flags(const __le32 * rbuf)
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{
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return __le32_to_cpu(rbuf[1]);
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}
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static inline __u32 ips_get_index(const __le32 * rbuf)
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{
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return (__le32_to_cpu(rbuf[0]) >> INFINIPATH_RHF_EGRINDEX_SHIFT)
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& INFINIPATH_RHF_EGRINDEX_MASK;
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}
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static inline __u32 ips_get_rcv_type(const __le32 * rbuf)
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{
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return (__le32_to_cpu(rbuf[0]) >> INFINIPATH_RHF_RCVTYPE_SHIFT)
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& INFINIPATH_RHF_RCVTYPE_MASK;
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}
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static inline __u32 ips_get_length_in_bytes(const __le32 * rbuf)
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{
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return ((__le32_to_cpu(rbuf[0]) >> INFINIPATH_RHF_LENGTH_SHIFT)
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& INFINIPATH_RHF_LENGTH_MASK) << 2;
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}
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static inline void *ips_get_first_protocol_header(const __u32 * rbuf)
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{
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return (void *)&rbuf[2];
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}
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static inline struct ips_message_header *ips_get_ips_header(const __u32 *
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rbuf)
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{
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return (struct ips_message_header *)&rbuf[2];
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}
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static inline __u32 ips_get_ipath_ver(__le32 hdrword)
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{
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return (__le32_to_cpu(hdrword) >> INFINIPATH_I_VERS_SHIFT)
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& INFINIPATH_I_VERS_MASK;
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}
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#endif /* IPS_COMMON_H */
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