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Commit | Line | Data |
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1da177e4 | 1 | /* |
1da177e4 LT |
2 | * Copyright (C) 2001 Kyle A. Lucke IBM Corporation |
3 | * Copyright (C) 2001 Mike Corrigan & Dave Engebretsen IBM Corporation | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
18 | */ | |
19 | #include <linux/init.h> | |
20 | #include <linux/proc_fs.h> | |
21 | #include <linux/seq_file.h> | |
22 | #include <linux/param.h> /* for HZ */ | |
23 | #include <asm/paca.h> | |
24 | #include <asm/processor.h> | |
25 | #include <asm/time.h> | |
26 | #include <asm/lppaca.h> | |
8404e654 | 27 | #include <asm/firmware.h> |
8021b8a7 | 28 | #include <asm/iseries/hv_call_xm.h> |
b08567cb SR |
29 | |
30 | #include "processor_vpd.h" | |
31 | #include "main_store.h" | |
1da177e4 LT |
32 | |
33 | static int __init iseries_proc_create(void) | |
34 | { | |
8404e654 SR |
35 | struct proc_dir_entry *e; |
36 | ||
37 | if (!firmware_has_feature(FW_FEATURE_ISERIES)) | |
38 | return 0; | |
39 | ||
40 | e = proc_mkdir("iSeries", 0); | |
1da177e4 LT |
41 | if (!e) |
42 | return 1; | |
43 | ||
44 | return 0; | |
45 | } | |
46 | core_initcall(iseries_proc_create); | |
47 | ||
1da177e4 LT |
48 | static unsigned long startTitan = 0; |
49 | static unsigned long startTb = 0; | |
50 | ||
51 | static int proc_titantod_show(struct seq_file *m, void *v) | |
52 | { | |
53 | unsigned long tb0, titan_tod; | |
54 | ||
55 | tb0 = get_tb(); | |
56 | titan_tod = HvCallXm_loadTod(); | |
57 | ||
58 | seq_printf(m, "Titan\n" ); | |
59 | seq_printf(m, " time base = %016lx\n", tb0); | |
60 | seq_printf(m, " titan tod = %016lx\n", titan_tod); | |
61 | seq_printf(m, " xProcFreq = %016x\n", | |
62 | xIoHriProcessorVpd[0].xProcFreq); | |
63 | seq_printf(m, " xTimeBaseFreq = %016x\n", | |
64 | xIoHriProcessorVpd[0].xTimeBaseFreq); | |
65 | seq_printf(m, " tb_ticks_per_jiffy = %lu\n", tb_ticks_per_jiffy); | |
66 | seq_printf(m, " tb_ticks_per_usec = %lu\n", tb_ticks_per_usec); | |
67 | ||
68 | if (!startTitan) { | |
69 | startTitan = titan_tod; | |
70 | startTb = tb0; | |
71 | } else { | |
72 | unsigned long titan_usec = (titan_tod - startTitan) >> 12; | |
73 | unsigned long tb_ticks = (tb0 - startTb); | |
74 | unsigned long titan_jiffies = titan_usec / (1000000/HZ); | |
75 | unsigned long titan_jiff_usec = titan_jiffies * (1000000/HZ); | |
cb5c7980 SR |
76 | unsigned long titan_jiff_rem_usec = |
77 | titan_usec - titan_jiff_usec; | |
1da177e4 LT |
78 | unsigned long tb_jiffies = tb_ticks / tb_ticks_per_jiffy; |
79 | unsigned long tb_jiff_ticks = tb_jiffies * tb_ticks_per_jiffy; | |
80 | unsigned long tb_jiff_rem_ticks = tb_ticks - tb_jiff_ticks; | |
cb5c7980 SR |
81 | unsigned long tb_jiff_rem_usec = |
82 | tb_jiff_rem_ticks / tb_ticks_per_usec; | |
83 | unsigned long new_tb_ticks_per_jiffy = | |
84 | (tb_ticks * (1000000/HZ))/titan_usec; | |
1da177e4 LT |
85 | |
86 | seq_printf(m, " titan elapsed = %lu uSec\n", titan_usec); | |
87 | seq_printf(m, " tb elapsed = %lu ticks\n", tb_ticks); | |
88 | seq_printf(m, " titan jiffies = %lu.%04lu \n", titan_jiffies, | |
89 | titan_jiff_rem_usec); | |
90 | seq_printf(m, " tb jiffies = %lu.%04lu\n", tb_jiffies, | |
91 | tb_jiff_rem_usec); | |
92 | seq_printf(m, " new tb_ticks_per_jiffy = %lu\n", | |
93 | new_tb_ticks_per_jiffy); | |
94 | } | |
95 | ||
96 | return 0; | |
97 | } | |
98 | ||
99 | static int proc_titantod_open(struct inode *inode, struct file *file) | |
100 | { | |
101 | return single_open(file, proc_titantod_show, NULL); | |
102 | } | |
103 | ||
5dfe4c96 | 104 | static const struct file_operations proc_titantod_operations = { |
1da177e4 LT |
105 | .open = proc_titantod_open, |
106 | .read = seq_read, | |
107 | .llseek = seq_lseek, | |
108 | .release = single_release, | |
109 | }; | |
110 | ||
111 | static int __init iseries_proc_init(void) | |
112 | { | |
8404e654 SR |
113 | if (!firmware_has_feature(FW_FEATURE_ISERIES)) |
114 | return 0; | |
115 | ||
66747138 DL |
116 | proc_create("iSeries/titanTod", S_IFREG|S_IRUGO, NULL, |
117 | &proc_titantod_operations); | |
1da177e4 LT |
118 | return 0; |
119 | } | |
120 | __initcall(iseries_proc_init); |