1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
|
/* $Id$
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (c) 1992-1997,2000-2003 Silicon Graphics, Inc. All rights reserved.
*/
#include <linux/types.h>
#include <linux/slab.h>
#include <asm/sn/sgi.h>
#include <asm/sn/driver.h>
#include <asm/sn/iograph.h>
#include <asm/sn/invent.h>
#include <asm/sn/hcl.h>
#include <asm/sn/labelcl.h>
#include <asm/sn/xtalk/xtalk.h>
#include <asm/sn/xtalk/xswitch.h>
#include <asm/sn/xtalk/xwidget.h>
#include <asm/sn/xtalk/xtalk_private.h>
#define NEW(ptr) (ptr = kmalloc(sizeof (*(ptr)), GFP_KERNEL))
#define DEL(ptr) (kfree(ptr))
int xswitch_devflag = D_MP;
/*
* This file provides generic support for Crosstalk
* Switches, in a way that insulates crosstalk providers
* from specifics about the switch chips being used.
*/
#include <asm/sn/xtalk/xbow.h>
#define DEV_FUNC(dev,func) xbow_##func
#if !defined(DEV_FUNC)
/*
* There is more than one possible provider
* for this platform. We need to examine the
* master vertex of the current vertex for
* a provider function structure, and indirect
* through the appropriately named member.
*/
#define DEV_FUNC(dev,func) xwidget_to_provider_fns(dev)->func
static xswitch_provider_t *
xwidget_to_provider_fns(vertex_hdl_t xconn)
{
vertex_hdl_t busv;
xswitch_info_t xswitch_info;
xswitch_provider_t provider_fns;
busv = hwgraph_connectpt_get(xconn_vhdl);
ASSERT(busv != GRAPH_VERTEX_NONE);
xswitch_info = xswitch_info_get(busv);
ASSERT(xswitch_info != NULL);
provider_fns = xswitch_info->xswitch_fns;
ASSERT(provider_fns != NULL);
return provider_fns;
}
#endif
#define XSWITCH_CENSUS_BIT(port) (1<<(port))
#define XSWITCH_CENSUS_PORT_MIN (0x0)
#define XSWITCH_CENSUS_PORT_MAX (0xF)
#define XSWITCH_CENSUS_PORTS (0x10)
#define XSWITCH_WIDGET_PRESENT(infop,port) ((infop)->census & XSWITCH_CENSUS_BIT(port))
static char xswitch_info_fingerprint[] = "xswitch_info";
struct xswitch_info_s {
char *fingerprint;
unsigned census;
vertex_hdl_t vhdl[XSWITCH_CENSUS_PORTS];
vertex_hdl_t master_vhdl[XSWITCH_CENSUS_PORTS];
xswitch_provider_t *xswitch_fns;
};
xswitch_info_t
xswitch_info_get(vertex_hdl_t xwidget)
{
xswitch_info_t xswitch_info;
xswitch_info = (xswitch_info_t)
hwgraph_fastinfo_get(xwidget);
return (xswitch_info);
}
void
xswitch_info_vhdl_set(xswitch_info_t xswitch_info,
xwidgetnum_t port,
vertex_hdl_t xwidget)
{
#if XSWITCH_CENSUS_PORT_MIN
if (port < XSWITCH_CENSUS_PORT_MIN)
return;
#endif
if (port > XSWITCH_CENSUS_PORT_MAX)
return;
xswitch_info->vhdl[port - XSWITCH_CENSUS_PORT_MIN] = xwidget;
}
vertex_hdl_t
xswitch_info_vhdl_get(xswitch_info_t xswitch_info,
xwidgetnum_t port)
{
#if XSWITCH_CENSUS_PORT_MIN
if (port < XSWITCH_CENSUS_PORT_MIN)
return GRAPH_VERTEX_NONE;
#endif
if (port > XSWITCH_CENSUS_PORT_MAX)
return GRAPH_VERTEX_NONE;
return xswitch_info->vhdl[port - XSWITCH_CENSUS_PORT_MIN];
}
/*
* Some systems may allow for multiple switch masters. On such systems,
* we assign a master for each port on the switch. These interfaces
* establish and retrieve that assignment.
*/
void
xswitch_info_master_assignment_set(xswitch_info_t xswitch_info,
xwidgetnum_t port,
vertex_hdl_t master_vhdl)
{
#if XSWITCH_CENSUS_PORT_MIN
if (port < XSWITCH_CENSUS_PORT_MIN)
return;
#endif
if (port > XSWITCH_CENSUS_PORT_MAX)
return;
xswitch_info->master_vhdl[port - XSWITCH_CENSUS_PORT_MIN] = master_vhdl;
}
vertex_hdl_t
xswitch_info_master_assignment_get(xswitch_info_t xswitch_info,
xwidgetnum_t port)
{
#if XSWITCH_CENSUS_PORT_MIN
if (port < XSWITCH_CENSUS_PORT_MIN)
return GRAPH_VERTEX_NONE;
#endif
if (port > XSWITCH_CENSUS_PORT_MAX)
return GRAPH_VERTEX_NONE;
return xswitch_info->master_vhdl[port - XSWITCH_CENSUS_PORT_MIN];
}
void
xswitch_info_set(vertex_hdl_t xwidget, xswitch_info_t xswitch_info)
{
xswitch_info->fingerprint = xswitch_info_fingerprint;
hwgraph_fastinfo_set(xwidget, (arbitrary_info_t) xswitch_info);
}
xswitch_info_t
xswitch_info_new(vertex_hdl_t xwidget)
{
xswitch_info_t xswitch_info;
xswitch_info = xswitch_info_get(xwidget);
if (xswitch_info == NULL) {
int port;
NEW(xswitch_info);
xswitch_info->census = 0;
for (port = XSWITCH_CENSUS_PORT_MIN;
port <= XSWITCH_CENSUS_PORT_MAX;
port++) {
xswitch_info_vhdl_set(xswitch_info, port,
GRAPH_VERTEX_NONE);
xswitch_info_master_assignment_set(xswitch_info,
port,
GRAPH_VERTEX_NONE);
}
xswitch_info_set(xwidget, xswitch_info);
}
return xswitch_info;
}
void
xswitch_provider_register(vertex_hdl_t busv,
xswitch_provider_t * xswitch_fns)
{
xswitch_info_t xswitch_info = xswitch_info_get(busv);
ASSERT(xswitch_info);
xswitch_info->xswitch_fns = xswitch_fns;
}
void
xswitch_info_link_is_ok(xswitch_info_t xswitch_info, xwidgetnum_t port)
{
xswitch_info->census |= XSWITCH_CENSUS_BIT(port);
}
int
xswitch_info_link_ok(xswitch_info_t xswitch_info, xwidgetnum_t port)
{
#if XSWITCH_CENSUS_PORT_MIN
if (port < XSWITCH_CENSUS_PORT_MIN)
return 0;
#endif
if (port > XSWITCH_CENSUS_PORT_MAX)
return 0;
return (xswitch_info->census & XSWITCH_CENSUS_BIT(port));
}
int
xswitch_reset_link(vertex_hdl_t xconn_vhdl)
{
return DEV_FUNC(xconn_vhdl, reset_link)
(xconn_vhdl);
}
|
