4 * Copyright (c) 2006 QLogic, Inc. All rights reserved.
5 * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved.
7 * This software is available to you under a choice of one of two
8 * licenses. You may choose to be licensed under the terms of the GNU
9 * General Public License (GPL) Version 2, available from the file
10 * COPYING in the main directory of this source tree, or the
11 * OpenIB.org BSD license below:
13 * Redistribution and use in source and binary forms, with or
14 * without modification, are permitted provided that the following
17 * - Redistributions of source code must retain the above
18 * copyright notice, this list of conditions and the following
21 * - Redistributions in binary form must reproduce the above
22 * copyright notice, this list of conditions and the following
23 * disclaimer in the documentation and/or other materials
24 * provided with the distribution.
26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
27 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
28 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
29 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
30 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
31 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
32 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
36 #include "ipath_common.h"
40 * Version - 4 bits, Port - 4 bits, TID - 10 bits and Offset -
41 * 14 bits before ECO change ~28 Dec 03. After that, Vers 4,
42 * Port 3, TID 11, offset 14.
44 __le32 ver_port_tid_offset;
49 struct ips_message_header {
52 /* fields below this point are in host byte order */
53 struct ipath_header iph;
57 /* 24 bits. The upper 8 bit is available for other use */
60 unsigned ack_seq_num:24;
64 __u32 ack_seq_num_org;
66 __u8 expected_tid_session_id;
67 __u8 tinylen; /* to aid MPI */
69 __u16 tag; /* to aid MPI */
70 __u16 mqhdr; /* for PSM MQ */
73 __u32 mpi[4]; /* to aid MPI */
75 __u64 mq[2]; /* for PSM MQ */
80 __u32 not_used; //free
90 struct ipath_header iph;
98 /* MUST be of word size due to PIO write requirements */
103 __u8 unused[2]; /* currently unused */
107 * The PIO buffer used for sending infinipath messages must only be written
108 * in 32-bit words, all the data must be written, and no writes can occur
109 * after the last word is written (which transfers "ownership" of the buffer
110 * to the chip and triggers the message to be sent).
111 * Since the Linux sk_buff structure can be recursive, non-aligned, and
112 * any number of bytes in each segment, we use the following structure
113 * to keep information about the overall state of the copy operation.
114 * This is used to save the information needed to store the checksum
115 * in the right place before sending the last word to the hardware and
116 * to buffer the last 0-3 bytes of non-word sized segments.
119 struct ether_header *hdr;
120 /* addr of PIO buf to write csum to */
121 __u32 __iomem *csum_pio;
122 __u32 __iomem *to; /* addr of PIO buf to write data to */
123 __u32 device; /* which device to allocate PIO bufs from */
124 __s32 error; /* set if there is an error. */
125 __s32 extra; /* amount of data saved in u.buf below */
126 __u32 len; /* total length to send in bytes */
127 __u32 flen; /* frament length in words */
128 __u32 csum; /* partial IP checksum */
129 __u32 pos; /* position for partial checksum */
130 __u32 offset; /* offset to where data currently starts */
131 __s32 checksum_calc; /* set to 1 when csum has been calculated */
139 /* IB - LRH header consts */
140 #define IPS_LRH_GRH 0x0003 /* 1. word of IB LRH - next header: GRH */
141 #define IPS_LRH_BTH 0x0002 /* 1. word of IB LRH - next header: BTH */
146 * defines the cut-off point between the header queue and eager/expected
149 #define NUM_OF_EXTRA_WORDS_IN_HEADER_QUEUE \
150 ((sizeof(struct ips_message_header) - \
151 offsetof(struct ips_message_header, iph)) >> 2)
154 #define OPCODE_IPS 0xC0
155 #define OPCODE_ITH4X 0xC1
157 /* OpCode 30 is use by stand-alone test programs */
158 #define OPCODE_RAW_DATA 0xDE
159 /* last OpCode (31) is reserved for test */
160 #define OPCODE_TEST 0xDF
162 /* sub OpCodes - ips */
163 #define OPCODE_SEQ_DATA 0x01
164 #define OPCODE_SEQ_CTRL 0x02
166 #define OPCODE_SEQ_MQ_DATA 0x03
167 #define OPCODE_SEQ_MQ_CTRL 0x04
169 #define OPCODE_ACK 0x10
170 #define OPCODE_NAK 0x11
172 #define OPCODE_ERR_CHK 0x20
173 #define OPCODE_ERR_CHK_PLS 0x21
175 #define OPCODE_STARTUP 0x30
176 #define OPCODE_STARTUP_ACK 0x31
177 #define OPCODE_STARTUP_NAK 0x32
179 #define OPCODE_STARTUP_EXT 0x34
180 #define OPCODE_STARTUP_ACK_EXT 0x35
181 #define OPCODE_STARTUP_NAK_EXT 0x36
183 #define OPCODE_TIDS_RELEASE 0x40
184 #define OPCODE_TIDS_RELEASE_CONFIRM 0x41
186 #define OPCODE_CLOSE 0x50
187 #define OPCODE_CLOSE_ACK 0x51
189 * like OPCODE_CLOSE, but no complaint if other side has already closed.
190 * Used when doing abort(), MPI_Abort(), etc.
192 #define OPCODE_ABORT 0x52
194 /* sub OpCodes - ith4x */
195 #define OPCODE_ENCAP 0x81
196 #define OPCODE_LID_ARP 0x82
198 /* Receive Header Queue: receive type (from infinipath) */
199 #define RCVHQ_RCV_TYPE_EXPECTED 0
200 #define RCVHQ_RCV_TYPE_EAGER 1
201 #define RCVHQ_RCV_TYPE_NON_KD 2
202 #define RCVHQ_RCV_TYPE_ERROR 3
205 #define SIZE_OF_CRC 1
207 #define EAGER_TID_ID INFINIPATH_I_TID_MASK
209 #define IPS_DEFAULT_P_KEY 0xFFFF
211 #define IPS_PERMISSIVE_LID 0xFFFF
212 #define IPS_MULTICAST_LID_BASE 0xC000
214 #define IPS_AETH_CREDIT_SHIFT 24
215 #define IPS_AETH_CREDIT_MASK 0x1F
216 #define IPS_AETH_CREDIT_INVAL 0x1F
218 #define IPS_PSN_MASK 0xFFFFFF
219 #define IPS_MSN_MASK 0xFFFFFF
220 #define IPS_QPN_MASK 0xFFFFFF
221 #define IPS_MULTICAST_QPN 0xFFFFFF
223 /* functions for extracting fields from rcvhdrq entries */
224 static inline __u32 ips_get_hdr_err_flags(const __le32 * rbuf)
226 return __le32_to_cpu(rbuf[1]);
229 static inline __u32 ips_get_index(const __le32 * rbuf)
231 return (__le32_to_cpu(rbuf[0]) >> INFINIPATH_RHF_EGRINDEX_SHIFT)
232 & INFINIPATH_RHF_EGRINDEX_MASK;
235 static inline __u32 ips_get_rcv_type(const __le32 * rbuf)
237 return (__le32_to_cpu(rbuf[0]) >> INFINIPATH_RHF_RCVTYPE_SHIFT)
238 & INFINIPATH_RHF_RCVTYPE_MASK;
241 static inline __u32 ips_get_length_in_bytes(const __le32 * rbuf)
243 return ((__le32_to_cpu(rbuf[0]) >> INFINIPATH_RHF_LENGTH_SHIFT)
244 & INFINIPATH_RHF_LENGTH_MASK) << 2;
247 static inline void *ips_get_first_protocol_header(const __u32 * rbuf)
249 return (void *)&rbuf[2];
252 static inline struct ips_message_header *ips_get_ips_header(const __u32 *
255 return (struct ips_message_header *)&rbuf[2];
258 static inline __u32 ips_get_ipath_ver(__le32 hdrword)
260 return (__le32_to_cpu(hdrword) >> INFINIPATH_I_VERS_SHIFT)
261 & INFINIPATH_I_VERS_MASK;
264 #endif /* IPS_COMMON_H */