projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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> | |
| 8021b8a7 | 27 | #include <asm/iseries/hv_call_xm.h> |
| b08567cb SR |
28 | |
| 29 | #include "processor_vpd.h" | |
| 30 | #include "main_store.h" | |
| 1da177e4 LT |
31 | |
| 32 | static int __init iseries_proc_create(void) | |
| 33 | { | |
| 34 | struct proc_dir_entry *e = proc_mkdir("iSeries", 0); | |
| 35 | if (!e) | |
| 36 | return 1; | |
| 37 | ||
| 38 | return 0; | |
| 39 | } | |
| 40 | core_initcall(iseries_proc_create); | |
| 41 | ||
| 1da177e4 LT |
42 | static unsigned long startTitan = 0; |
| 43 | static unsigned long startTb = 0; | |
| 44 | ||
| 45 | static int proc_titantod_show(struct seq_file *m, void *v) | |
| 46 | { | |
| 47 | unsigned long tb0, titan_tod; | |
| 48 | ||
| 49 | tb0 = get_tb(); | |
| 50 | titan_tod = HvCallXm_loadTod(); | |
| 51 | ||
| 52 | seq_printf(m, "Titan\n" ); | |
| 53 | seq_printf(m, " time base = %016lx\n", tb0); | |
| 54 | seq_printf(m, " titan tod = %016lx\n", titan_tod); | |
| 55 | seq_printf(m, " xProcFreq = %016x\n", | |
| 56 | xIoHriProcessorVpd[0].xProcFreq); | |
| 57 | seq_printf(m, " xTimeBaseFreq = %016x\n", | |
| 58 | xIoHriProcessorVpd[0].xTimeBaseFreq); | |
| 59 | seq_printf(m, " tb_ticks_per_jiffy = %lu\n", tb_ticks_per_jiffy); | |
| 60 | seq_printf(m, " tb_ticks_per_usec = %lu\n", tb_ticks_per_usec); | |
| 61 | ||
| 62 | if (!startTitan) { | |
| 63 | startTitan = titan_tod; | |
| 64 | startTb = tb0; | |
| 65 | } else { | |
| 66 | unsigned long titan_usec = (titan_tod - startTitan) >> 12; | |
| 67 | unsigned long tb_ticks = (tb0 - startTb); | |
| 68 | unsigned long titan_jiffies = titan_usec / (1000000/HZ); | |
| 69 | unsigned long titan_jiff_usec = titan_jiffies * (1000000/HZ); | |
| cb5c7980 SR |
70 | unsigned long titan_jiff_rem_usec = |
| 71 | titan_usec - titan_jiff_usec; | |
| 1da177e4 LT |
72 | unsigned long tb_jiffies = tb_ticks / tb_ticks_per_jiffy; |
| 73 | unsigned long tb_jiff_ticks = tb_jiffies * tb_ticks_per_jiffy; | |
| 74 | unsigned long tb_jiff_rem_ticks = tb_ticks - tb_jiff_ticks; | |
| cb5c7980 SR |
75 | unsigned long tb_jiff_rem_usec = |
| 76 | tb_jiff_rem_ticks / tb_ticks_per_usec; | |
| 77 | unsigned long new_tb_ticks_per_jiffy = | |
| 78 | (tb_ticks * (1000000/HZ))/titan_usec; | |
| 1da177e4 LT |
79 | |
| 80 | seq_printf(m, " titan elapsed = %lu uSec\n", titan_usec); | |
| 81 | seq_printf(m, " tb elapsed = %lu ticks\n", tb_ticks); | |
| 82 | seq_printf(m, " titan jiffies = %lu.%04lu \n", titan_jiffies, | |
| 83 | titan_jiff_rem_usec); | |
| 84 | seq_printf(m, " tb jiffies = %lu.%04lu\n", tb_jiffies, | |
| 85 | tb_jiff_rem_usec); | |
| 86 | seq_printf(m, " new tb_ticks_per_jiffy = %lu\n", | |
| 87 | new_tb_ticks_per_jiffy); | |
| 88 | } | |
| 89 | ||
| 90 | return 0; | |
| 91 | } | |
| 92 | ||
| 93 | static int proc_titantod_open(struct inode *inode, struct file *file) | |
| 94 | { | |
| 95 | return single_open(file, proc_titantod_show, NULL); | |
| 96 | } | |
| 97 | ||
| 98 | static struct file_operations proc_titantod_operations = { | |
| 99 | .open = proc_titantod_open, | |
| 100 | .read = seq_read, | |
| 101 | .llseek = seq_lseek, | |
| 102 | .release = single_release, | |
| 103 | }; | |
| 104 | ||
| 105 | static int __init iseries_proc_init(void) | |
| 106 | { | |
| 107 | struct proc_dir_entry *e; | |
| 108 | ||
| 1da177e4 LT |
109 | e = create_proc_entry("iSeries/titanTod", S_IFREG|S_IRUGO, NULL); |
| 110 | if (e) | |
| 111 | e->proc_fops = &proc_titantod_operations; | |
| 112 | ||
| 113 | return 0; | |
| 114 | } | |
| 115 | __initcall(iseries_proc_init); |