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ehca_qes.h
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1 /*
2  * IBM eServer eHCA Infiniband device driver for Linux on POWER
3  *
4  * Hardware request structures
5  *
6  * Authors: Waleri Fomin <[email protected]>
7  * Reinhard Ernst <[email protected]>
8  * Christoph Raisch <[email protected]>
9  *
10  * Copyright (c) 2005 IBM Corporation
11  *
12  * All rights reserved.
13  *
14  * This source code is distributed under a dual license of GPL v2.0 and OpenIB
15  * BSD.
16  *
17  * OpenIB BSD License
18  *
19  * Redistribution and use in source and binary forms, with or without
20  * modification, are permitted provided that the following conditions are met:
21  *
22  * Redistributions of source code must retain the above copyright notice, this
23  * list of conditions and the following disclaimer.
24  *
25  * Redistributions in binary form must reproduce the above copyright notice,
26  * this list of conditions and the following disclaimer in the documentation
27  * and/or other materials
28  * provided with the distribution.
29  *
30  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
31  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
32  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
33  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
34  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
35  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
36  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
37  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
38  * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
39  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
40  * POSSIBILITY OF SUCH DAMAGE.
41  */
42 
43 
44 #ifndef _EHCA_QES_H_
45 #define _EHCA_QES_H_
46 
47 #include "ehca_tools.h"
48 
49 /* virtual scatter gather entry to specify remote addresses with length */
50 struct ehca_vsgentry {
51  u64 vaddr;
52  u32 lkey;
53  u32 length;
54 };
55 
56 #define GRH_FLAG_MASK EHCA_BMASK_IBM( 7, 7)
57 #define GRH_IPVERSION_MASK EHCA_BMASK_IBM( 0, 3)
58 #define GRH_TCLASS_MASK EHCA_BMASK_IBM( 4, 12)
59 #define GRH_FLOWLABEL_MASK EHCA_BMASK_IBM(13, 31)
60 #define GRH_PAYLEN_MASK EHCA_BMASK_IBM(32, 47)
61 #define GRH_NEXTHEADER_MASK EHCA_BMASK_IBM(48, 55)
62 #define GRH_HOPLIMIT_MASK EHCA_BMASK_IBM(56, 63)
63 
64 /*
65  * Unreliable Datagram Address Vector Format
66  * see IBTA Vol1 chapter 8.3 Global Routing Header
67  */
68 struct ehca_ud_av {
69  u8 sl;
70  u8 lnh;
71  u16 dlid;
72  u8 reserved1;
73  u8 reserved2;
74  u8 reserved3;
75  u8 slid_path_bits;
76  u8 reserved4;
77  u8 ipd;
78  u8 reserved5;
79  u8 pmtu;
80  u32 reserved6;
81  u64 reserved7;
82  union {
83  struct {
84  u64 word_0; /* always set to 6 */
85  /*should be 0x1B for IB transport */
86  u64 word_1;
87  u64 word_2;
88  u64 word_3;
89  u64 word_4;
90  } grh;
91  struct {
92  u32 wd_0;
93  u32 wd_1;
94  /* DWord_1 --> SGID */
95 
96  u32 sgid_wd3;
97  u32 sgid_wd2;
98 
99  u32 sgid_wd1;
100  u32 sgid_wd0;
101  /* DWord_3 --> DGID */
102 
103  u32 dgid_wd3;
104  u32 dgid_wd2;
105 
106  u32 dgid_wd1;
107  u32 dgid_wd0;
108  } grh_l;
109  };
110 };
111 
112 /* maximum number of sg entries allowed in a WQE */
113 #define MAX_WQE_SG_ENTRIES 252
114 
115 #define WQE_OPTYPE_SEND 0x80
116 #define WQE_OPTYPE_RDMAREAD 0x40
117 #define WQE_OPTYPE_RDMAWRITE 0x20
118 #define WQE_OPTYPE_CMPSWAP 0x10
119 #define WQE_OPTYPE_FETCHADD 0x08
120 #define WQE_OPTYPE_BIND 0x04
121 
122 #define WQE_WRFLAG_REQ_SIGNAL_COM 0x80
123 #define WQE_WRFLAG_FENCE 0x40
124 #define WQE_WRFLAG_IMM_DATA_PRESENT 0x20
125 #define WQE_WRFLAG_SOLIC_EVENT 0x10
126 
127 #define WQEF_CACHE_HINT 0x80
128 #define WQEF_CACHE_HINT_RD_WR 0x40
129 #define WQEF_TIMED_WQE 0x20
130 #define WQEF_PURGE 0x08
131 #define WQEF_HIGH_NIBBLE 0xF0
132 
133 #define MW_BIND_ACCESSCTRL_R_WRITE 0x40
134 #define MW_BIND_ACCESSCTRL_R_READ 0x20
135 #define MW_BIND_ACCESSCTRL_R_ATOMIC 0x10
136 
137 struct ehca_wqe {
138  u64 work_request_id;
139  u8 optype;
140  u8 wr_flag;
141  u16 pkeyi;
142  u8 wqef;
143  u8 nr_of_data_seg;
144  u16 wqe_provided_slid;
145  u32 destination_qp_number;
146  u32 resync_psn_sqp;
147  u32 local_ee_context_qkey;
148  u32 immediate_data;
149  union {
150  struct {
151  u64 remote_virtual_address;
152  u32 rkey;
153  u32 reserved;
154  u64 atomic_1st_op_dma_len;
155  u64 atomic_2nd_op;
156  struct ehca_vsgentry sg_list[MAX_WQE_SG_ENTRIES];
157 
158  } nud;
159  struct {
160  u64 ehca_ud_av_ptr;
161  u64 reserved1;
162  u64 reserved2;
163  u64 reserved3;
164  struct ehca_vsgentry sg_list[MAX_WQE_SG_ENTRIES];
165  } ud_avp;
166  struct {
167  struct ehca_ud_av ud_av;
168  struct ehca_vsgentry sg_list[MAX_WQE_SG_ENTRIES -
169  2];
170  } ud_av;
171  struct {
172  u64 reserved0;
173  u64 reserved1;
174  u64 reserved2;
175  u64 reserved3;
176  struct ehca_vsgentry sg_list[MAX_WQE_SG_ENTRIES];
177  } all_rcv;
178 
179  struct {
180  u64 reserved;
181  u32 rkey;
182  u32 old_rkey;
183  u64 reserved1;
184  u64 reserved2;
185  u64 virtual_address;
186  u32 reserved3;
187  u32 length;
188  u32 reserved4;
189  u16 reserved5;
190  u8 reserved6;
191  u8 lr_ctl;
192  u32 lkey;
193  u32 reserved7;
194  u64 reserved8;
195  u64 reserved9;
196  u64 reserved10;
197  u64 reserved11;
198  } bind;
199  struct {
200  u64 reserved12;
201  u64 reserved13;
202  u32 size;
203  u32 start;
204  } inline_data;
205  } u;
206 
207 };
208 
209 #define WC_SEND_RECEIVE EHCA_BMASK_IBM(0, 0)
210 #define WC_IMM_DATA EHCA_BMASK_IBM(1, 1)
211 #define WC_GRH_PRESENT EHCA_BMASK_IBM(2, 2)
212 #define WC_SE_BIT EHCA_BMASK_IBM(3, 3)
213 #define WC_STATUS_ERROR_BIT 0x80000000
214 #define WC_STATUS_REMOTE_ERROR_FLAGS 0x0000F800
215 #define WC_STATUS_PURGE_BIT 0x10
216 #define WC_SEND_RECEIVE_BIT 0x80
217 
218 struct ehca_cqe {
219  u64 work_request_id;
220  u8 optype;
221  u8 w_completion_flags;
222  u16 reserved1;
223  u32 nr_bytes_transferred;
224  u32 immediate_data;
225  u32 local_qp_number;
226  u8 freed_resource_count;
227  u8 service_level;
228  u16 wqe_count;
229  u32 qp_token;
230  u32 qkey_ee_token;
231  u32 remote_qp_number;
232  u16 dlid;
233  u16 rlid;
234  u16 reserved2;
235  u16 pkey_index;
236  u32 cqe_timestamp;
237  u32 wqe_timestamp;
238  u8 wqe_timestamp_valid;
239  u8 reserved3;
240  u8 reserved4;
241  u8 cqe_flags;
242  u32 status;
243 };
244 
245 struct ehca_eqe {
246  u64 entry;
247 };
248 
249 struct ehca_mrte {
250  u64 starting_va;
251  u64 length; /* length of memory region in bytes*/
252  u32 pd;
253  u8 key_instance;
254  u8 pagesize;
255  u8 mr_control;
256  u8 local_remote_access_ctrl;
257  u8 reserved[0x20 - 0x18];
258  u64 at_pointer[4];
259 };
260 #endif /*_EHCA_QES_H_*/
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