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-rw-r--r--drivers/infiniband/hw/ipath/ipath_layer.h181
1 files changed, 181 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_layer.h b/drivers/infiniband/hw/ipath/ipath_layer.h
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1/*
2 * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 */
32
33#ifndef _IPATH_LAYER_H
34#define _IPATH_LAYER_H
35
36/*
37 * This header file is for symbols shared between the infinipath driver
38 * and drivers layered upon it (such as ipath).
39 */
40
41struct sk_buff;
42struct ipath_sge_state;
43struct ipath_devdata;
44struct ether_header;
45
46struct ipath_layer_counters {
47 u64 symbol_error_counter;
48 u64 link_error_recovery_counter;
49 u64 link_downed_counter;
50 u64 port_rcv_errors;
51 u64 port_rcv_remphys_errors;
52 u64 port_xmit_discards;
53 u64 port_xmit_data;
54 u64 port_rcv_data;
55 u64 port_xmit_packets;
56 u64 port_rcv_packets;
57};
58
59/*
60 * A segment is a linear region of low physical memory.
61 * XXX Maybe we should use phys addr here and kmap()/kunmap().
62 * Used by the verbs layer.
63 */
64struct ipath_seg {
65 void *vaddr;
66 size_t length;
67};
68
69/* The number of ipath_segs that fit in a page. */
70#define IPATH_SEGSZ (PAGE_SIZE / sizeof (struct ipath_seg))
71
72struct ipath_segarray {
73 struct ipath_seg segs[IPATH_SEGSZ];
74};
75
76struct ipath_mregion {
77 u64 user_base; /* User's address for this region */
78 u64 iova; /* IB start address of this region */
79 size_t length;
80 u32 lkey;
81 u32 offset; /* offset (bytes) to start of region */
82 int access_flags;
83 u32 max_segs; /* number of ipath_segs in all the arrays */
84 u32 mapsz; /* size of the map array */
85 struct ipath_segarray *map[0]; /* the segments */
86};
87
88/*
89 * These keep track of the copy progress within a memory region.
90 * Used by the verbs layer.
91 */
92struct ipath_sge {
93 struct ipath_mregion *mr;
94 void *vaddr; /* current pointer into the segment */
95 u32 sge_length; /* length of the SGE */
96 u32 length; /* remaining length of the segment */
97 u16 m; /* current index: mr->map[m] */
98 u16 n; /* current index: mr->map[m]->segs[n] */
99};
100
101struct ipath_sge_state {
102 struct ipath_sge *sg_list; /* next SGE to be used if any */
103 struct ipath_sge sge; /* progress state for the current SGE */
104 u8 num_sge;
105};
106
107int ipath_layer_register(void *(*l_add)(int, struct ipath_devdata *),
108 void (*l_remove)(void *),
109 int (*l_intr)(void *, u32),
110 int (*l_rcv)(void *, void *,
111 struct sk_buff *),
112 u16 rcv_opcode,
113 int (*l_rcv_lid)(void *, void *));
114int ipath_verbs_register(void *(*l_add)(int, struct ipath_devdata *),
115 void (*l_remove)(void *arg),
116 int (*l_piobufavail)(void *arg),
117 void (*l_rcv)(void *arg, void *rhdr,
118 void *data, u32 tlen),
119 void (*l_timer_cb)(void *arg));
120void ipath_layer_unregister(void);
121void ipath_verbs_unregister(void);
122int ipath_layer_open(struct ipath_devdata *, u32 * pktmax);
123u16 ipath_layer_get_lid(struct ipath_devdata *dd);
124int ipath_layer_get_mac(struct ipath_devdata *dd, u8 *);
125u16 ipath_layer_get_bcast(struct ipath_devdata *dd);
126u32 ipath_layer_get_cr_errpkey(struct ipath_devdata *dd);
127int ipath_layer_set_linkstate(struct ipath_devdata *dd, u8 state);
128int ipath_layer_set_mtu(struct ipath_devdata *, u16);
129int ipath_set_sps_lid(struct ipath_devdata *, u32, u8);
130int ipath_layer_send_hdr(struct ipath_devdata *dd,
131 struct ether_header *hdr);
132int ipath_verbs_send(struct ipath_devdata *dd, u32 hdrwords,
133 u32 * hdr, u32 len, struct ipath_sge_state *ss);
134int ipath_layer_set_piointbufavail_int(struct ipath_devdata *dd);
135int ipath_layer_get_boardname(struct ipath_devdata *dd, char *name,
136 size_t namelen);
137int ipath_layer_snapshot_counters(struct ipath_devdata *dd, u64 *swords,
138 u64 *rwords, u64 *spkts, u64 *rpkts,
139 u64 *xmit_wait);
140int ipath_layer_get_counters(struct ipath_devdata *dd,
141 struct ipath_layer_counters *cntrs);
142int ipath_layer_want_buffer(struct ipath_devdata *dd);
143int ipath_layer_set_guid(struct ipath_devdata *, __be64 guid);
144__be64 ipath_layer_get_guid(struct ipath_devdata *);
145u32 ipath_layer_get_nguid(struct ipath_devdata *);
146int ipath_layer_query_device(struct ipath_devdata *, u32 * vendor,
147 u32 * boardrev, u32 * majrev, u32 * minrev);
148u32 ipath_layer_get_flags(struct ipath_devdata *dd);
149struct device *ipath_layer_get_device(struct ipath_devdata *dd);
150u16 ipath_layer_get_deviceid(struct ipath_devdata *dd);
151u64 ipath_layer_get_lastibcstat(struct ipath_devdata *dd);
152u32 ipath_layer_get_ibmtu(struct ipath_devdata *dd);
153int ipath_layer_enable_timer(struct ipath_devdata *dd);
154int ipath_layer_disable_timer(struct ipath_devdata *dd);
155int ipath_layer_set_verbs_flags(struct ipath_devdata *dd, unsigned flags);
156unsigned ipath_layer_get_npkeys(struct ipath_devdata *dd);
157unsigned ipath_layer_get_pkey(struct ipath_devdata *dd, unsigned index);
158int ipath_layer_get_pkeys(struct ipath_devdata *dd, u16 *pkeys);
159int ipath_layer_set_pkeys(struct ipath_devdata *dd, u16 *pkeys);
160int ipath_layer_get_linkdowndefaultstate(struct ipath_devdata *dd);
161int ipath_layer_set_linkdowndefaultstate(struct ipath_devdata *dd,
162 int sleep);
163int ipath_layer_get_phyerrthreshold(struct ipath_devdata *dd);
164int ipath_layer_set_phyerrthreshold(struct ipath_devdata *dd, unsigned n);
165int ipath_layer_get_overrunthreshold(struct ipath_devdata *dd);
166int ipath_layer_set_overrunthreshold(struct ipath_devdata *dd, unsigned n);
167u32 ipath_layer_get_rcvhdrentsize(struct ipath_devdata *dd);
168
169/* ipath_ether interrupt values */
170#define IPATH_LAYER_INT_IF_UP 0x2
171#define IPATH_LAYER_INT_IF_DOWN 0x4
172#define IPATH_LAYER_INT_LID 0x8
173#define IPATH_LAYER_INT_SEND_CONTINUE 0x10
174#define IPATH_LAYER_INT_BCAST 0x40
175
176/* _verbs_layer.l_flags */
177#define IPATH_VERBS_KERNEL_SMA 0x1
178
179extern unsigned ipath_debug; /* debugging bit mask */
180
181#endif /* _IPATH_LAYER_H */
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-24 17:02:17 -0500