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
|
/*
* Copyright 2016-17 IBM Corp.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#define pr_fmt(fmt) "vas: " fmt
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include "vas.h"
static struct dentry *vas_debugfs;
static char *cop_to_str(int cop)
{
switch (cop) {
case VAS_COP_TYPE_FAULT: return "Fault";
case VAS_COP_TYPE_842: return "NX-842 Normal Priority";
case VAS_COP_TYPE_842_HIPRI: return "NX-842 High Priority";
case VAS_COP_TYPE_GZIP: return "NX-GZIP Normal Priority";
case VAS_COP_TYPE_GZIP_HIPRI: return "NX-GZIP High Priority";
case VAS_COP_TYPE_FTW: return "Fast Thread-wakeup";
default: return "Unknown";
}
}
static int info_dbg_show(struct seq_file *s, void *private)
{
struct vas_window *window = s->private;
mutex_lock(&vas_mutex);
/* ensure window is not unmapped */
if (!window->hvwc_map)
goto unlock;
seq_printf(s, "Type: %s, %s\n", cop_to_str(window->cop),
window->tx_win ? "Send" : "Receive");
seq_printf(s, "Pid : %d\n", window->pid);
unlock:
mutex_unlock(&vas_mutex);
return 0;
}
static int info_dbg_open(struct inode *inode, struct file *file)
{
return single_open(file, info_dbg_show, inode->i_private);
}
static const struct file_operations info_fops = {
.open = info_dbg_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static inline void print_reg(struct seq_file *s, struct vas_window *win,
char *name, u32 reg)
{
seq_printf(s, "0x%016llx %s\n", read_hvwc_reg(win, name, reg), name);
}
static int hvwc_dbg_show(struct seq_file *s, void *private)
{
struct vas_window *window = s->private;
mutex_lock(&vas_mutex);
/* ensure window is not unmapped */
if (!window->hvwc_map)
goto unlock;
print_reg(s, window, VREG(LPID));
print_reg(s, window, VREG(PID));
print_reg(s, window, VREG(XLATE_MSR));
print_reg(s, window, VREG(XLATE_LPCR));
print_reg(s, window, VREG(XLATE_CTL));
print_reg(s, window, VREG(AMR));
print_reg(s, window, VREG(SEIDR));
print_reg(s, window, VREG(FAULT_TX_WIN));
print_reg(s, window, VREG(OSU_INTR_SRC_RA));
print_reg(s, window, VREG(HV_INTR_SRC_RA));
print_reg(s, window, VREG(PSWID));
print_reg(s, window, VREG(LFIFO_BAR));
print_reg(s, window, VREG(LDATA_STAMP_CTL));
print_reg(s, window, VREG(LDMA_CACHE_CTL));
print_reg(s, window, VREG(LRFIFO_PUSH));
print_reg(s, window, VREG(CURR_MSG_COUNT));
print_reg(s, window, VREG(LNOTIFY_AFTER_COUNT));
print_reg(s, window, VREG(LRX_WCRED));
print_reg(s, window, VREG(LRX_WCRED_ADDER));
print_reg(s, window, VREG(TX_WCRED));
print_reg(s, window, VREG(TX_WCRED_ADDER));
print_reg(s, window, VREG(LFIFO_SIZE));
print_reg(s, window, VREG(WINCTL));
print_reg(s, window, VREG(WIN_STATUS));
print_reg(s, window, VREG(WIN_CTX_CACHING_CTL));
print_reg(s, window, VREG(TX_RSVD_BUF_COUNT));
print_reg(s, window, VREG(LRFIFO_WIN_PTR));
print_reg(s, window, VREG(LNOTIFY_CTL));
print_reg(s, window, VREG(LNOTIFY_PID));
print_reg(s, window, VREG(LNOTIFY_LPID));
print_reg(s, window, VREG(LNOTIFY_TID));
print_reg(s, window, VREG(LNOTIFY_SCOPE));
print_reg(s, window, VREG(NX_UTIL_ADDER));
unlock:
mutex_unlock(&vas_mutex);
return 0;
}
static int hvwc_dbg_open(struct inode *inode, struct file *file)
{
return single_open(file, hvwc_dbg_show, inode->i_private);
}
static const struct file_operations hvwc_fops = {
.open = hvwc_dbg_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
void vas_window_free_dbgdir(struct vas_window *window)
{
if (window->dbgdir) {
debugfs_remove_recursive(window->dbgdir);
kfree(window->dbgname);
window->dbgdir = NULL;
window->dbgname = NULL;
}
}
void vas_window_init_dbgdir(struct vas_window *window)
{
struct dentry *f, *d;
if (!window->vinst->dbgdir)
return;
window->dbgname = kzalloc(16, GFP_KERNEL);
if (!window->dbgname)
return;
snprintf(window->dbgname, 16, "w%d", window->winid);
d = debugfs_create_dir(window->dbgname, window->vinst->dbgdir);
if (IS_ERR(d))
goto free_name;
window->dbgdir = d;
f = debugfs_create_file("info", 0444, d, window, &info_fops);
if (IS_ERR(f))
goto remove_dir;
f = debugfs_create_file("hvwc", 0444, d, window, &hvwc_fops);
if (IS_ERR(f))
goto remove_dir;
return;
remove_dir:
debugfs_remove_recursive(window->dbgdir);
window->dbgdir = NULL;
free_name:
kfree(window->dbgname);
window->dbgname = NULL;
}
void vas_instance_init_dbgdir(struct vas_instance *vinst)
{
struct dentry *d;
vas_init_dbgdir();
if (!vas_debugfs)
return;
vinst->dbgname = kzalloc(16, GFP_KERNEL);
if (!vinst->dbgname)
return;
snprintf(vinst->dbgname, 16, "v%d", vinst->vas_id);
d = debugfs_create_dir(vinst->dbgname, vas_debugfs);
if (IS_ERR(d))
goto free_name;
vinst->dbgdir = d;
return;
free_name:
kfree(vinst->dbgname);
vinst->dbgname = NULL;
vinst->dbgdir = NULL;
}
/*
* Set up the "root" VAS debugfs dir. Return if we already set it up
* (or failed to) in an earlier instance of VAS.
*/
void vas_init_dbgdir(void)
{
static bool first_time = true;
if (!first_time)
return;
first_time = false;
vas_debugfs = debugfs_create_dir("vas", NULL);
if (IS_ERR(vas_debugfs))
vas_debugfs = NULL;
}
|
