2 * Copyright (c) 2006 QLogic, Inc. 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_LAYER_H
35 #define _IPATH_LAYER_H
38 * This header file is for symbols shared between the infinipath driver
39 * and drivers layered upon it (such as ipath).
43 struct ipath_sge_state;
47 struct ipath_layer_counters {
48 u64 symbol_error_counter;
49 u64 link_error_recovery_counter;
50 u64 link_downed_counter;
52 u64 port_rcv_remphys_errors;
53 u64 port_xmit_discards;
56 u64 port_xmit_packets;
58 u32 local_link_integrity_errors;
59 u32 excessive_buffer_overrun_errors;
63 * A segment is a linear region of low physical memory.
64 * XXX Maybe we should use phys addr here and kmap()/kunmap().
65 * Used by the verbs layer.
72 /* The number of ipath_segs that fit in a page. */
73 #define IPATH_SEGSZ (PAGE_SIZE / sizeof (struct ipath_seg))
75 struct ipath_segarray {
76 struct ipath_seg segs[IPATH_SEGSZ];
79 struct ipath_mregion {
80 u64 user_base; /* User's address for this region */
81 u64 iova; /* IB start address of this region */
84 u32 offset; /* offset (bytes) to start of region */
86 u32 max_segs; /* number of ipath_segs in all the arrays */
87 u32 mapsz; /* size of the map array */
88 struct ipath_segarray *map[0]; /* the segments */
92 * These keep track of the copy progress within a memory region.
93 * Used by the verbs layer.
96 struct ipath_mregion *mr;
97 void *vaddr; /* current pointer into the segment */
98 u32 sge_length; /* length of the SGE */
99 u32 length; /* remaining length of the segment */
100 u16 m; /* current index: mr->map[m] */
101 u16 n; /* current index: mr->map[m]->segs[n] */
104 struct ipath_sge_state {
105 struct ipath_sge *sg_list; /* next SGE to be used if any */
106 struct ipath_sge sge; /* progress state for the current SGE */
110 int ipath_layer_register(void *(*l_add)(int, struct ipath_devdata *),
111 void (*l_remove)(void *),
112 int (*l_intr)(void *, u32),
113 int (*l_rcv)(void *, void *,
116 int (*l_rcv_lid)(void *, void *));
117 int ipath_verbs_register(void *(*l_add)(int, struct ipath_devdata *),
118 void (*l_remove)(void *arg),
119 int (*l_piobufavail)(void *arg),
120 void (*l_rcv)(void *arg, void *rhdr,
121 void *data, u32 tlen),
122 void (*l_timer_cb)(void *arg));
123 void ipath_layer_unregister(void);
124 void ipath_verbs_unregister(void);
125 int ipath_layer_open(struct ipath_devdata *, u32 * pktmax);
126 u16 ipath_layer_get_lid(struct ipath_devdata *dd);
127 int ipath_layer_get_mac(struct ipath_devdata *dd, u8 *);
128 u16 ipath_layer_get_bcast(struct ipath_devdata *dd);
129 u32 ipath_layer_get_cr_errpkey(struct ipath_devdata *dd);
130 int ipath_layer_set_linkstate(struct ipath_devdata *dd, u8 state);
131 int ipath_layer_set_mtu(struct ipath_devdata *, u16);
132 int ipath_set_lid(struct ipath_devdata *, u32, u8);
133 int ipath_layer_send_hdr(struct ipath_devdata *dd,
134 struct ether_header *hdr);
135 int ipath_verbs_send(struct ipath_devdata *dd, u32 hdrwords,
136 u32 * hdr, u32 len, struct ipath_sge_state *ss);
137 int ipath_layer_set_piointbufavail_int(struct ipath_devdata *dd);
138 int ipath_layer_get_boardname(struct ipath_devdata *dd, char *name,
140 int ipath_layer_snapshot_counters(struct ipath_devdata *dd, u64 *swords,
141 u64 *rwords, u64 *spkts, u64 *rpkts,
143 int ipath_layer_get_counters(struct ipath_devdata *dd,
144 struct ipath_layer_counters *cntrs);
145 int ipath_layer_want_buffer(struct ipath_devdata *dd);
146 int ipath_layer_set_guid(struct ipath_devdata *, __be64 guid);
147 __be64 ipath_layer_get_guid(struct ipath_devdata *);
148 u32 ipath_layer_get_nguid(struct ipath_devdata *);
149 u32 ipath_layer_get_majrev(struct ipath_devdata *);
150 u32 ipath_layer_get_minrev(struct ipath_devdata *);
151 u32 ipath_layer_get_pcirev(struct ipath_devdata *);
152 u32 ipath_layer_get_flags(struct ipath_devdata *dd);
153 struct device *ipath_layer_get_device(struct ipath_devdata *dd);
154 u16 ipath_layer_get_deviceid(struct ipath_devdata *dd);
155 u32 ipath_layer_get_vendorid(struct ipath_devdata *);
156 u64 ipath_layer_get_lastibcstat(struct ipath_devdata *dd);
157 u32 ipath_layer_get_ibmtu(struct ipath_devdata *dd);
158 int ipath_layer_enable_timer(struct ipath_devdata *dd);
159 int ipath_layer_disable_timer(struct ipath_devdata *dd);
160 int ipath_layer_set_verbs_flags(struct ipath_devdata *dd, unsigned flags);
161 unsigned ipath_layer_get_npkeys(struct ipath_devdata *dd);
162 unsigned ipath_layer_get_pkey(struct ipath_devdata *dd, unsigned index);
163 int ipath_layer_get_pkeys(struct ipath_devdata *dd, u16 *pkeys);
164 int ipath_layer_set_pkeys(struct ipath_devdata *dd, u16 *pkeys);
165 int ipath_layer_get_linkdowndefaultstate(struct ipath_devdata *dd);
166 int ipath_layer_set_linkdowndefaultstate(struct ipath_devdata *dd,
168 int ipath_layer_get_phyerrthreshold(struct ipath_devdata *dd);
169 int ipath_layer_set_phyerrthreshold(struct ipath_devdata *dd, unsigned n);
170 int ipath_layer_get_overrunthreshold(struct ipath_devdata *dd);
171 int ipath_layer_set_overrunthreshold(struct ipath_devdata *dd, unsigned n);
172 u32 ipath_layer_get_rcvhdrentsize(struct ipath_devdata *dd);
174 /* ipath_ether interrupt values */
175 #define IPATH_LAYER_INT_IF_UP 0x2
176 #define IPATH_LAYER_INT_IF_DOWN 0x4
177 #define IPATH_LAYER_INT_LID 0x8
178 #define IPATH_LAYER_INT_SEND_CONTINUE 0x10
179 #define IPATH_LAYER_INT_BCAST 0x40
181 /* _verbs_layer.l_flags */
182 #define IPATH_VERBS_KERNEL_SMA 0x1
184 extern unsigned ipath_debug; /* debugging bit mask */
186 #endif /* _IPATH_LAYER_H */