/* * Copyright (C) 2001 Kyle A. Lucke IBM Corporation * Copyright (C) 2001 Mike Corrigan & Dave Engebretsen IBM Corporation * * 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. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include <linux/init.h> #include <linux/proc_fs.h> #include <linux/seq_file.h> #include <linux/param.h> /* for HZ */ #include <asm/paca.h> #include <asm/processor.h> #include <asm/time.h> #include <asm/lppaca.h> #include <asm/iseries/hv_call_xm.h> #include "processor_vpd.h" #include "main_store.h" static int __init iseries_proc_create(void) { struct proc_dir_entry *e = proc_mkdir("iSeries", 0); if (!e) return 1; return 0; } core_initcall(iseries_proc_create); static unsigned long startTitan = 0; static unsigned long startTb = 0; static int proc_titantod_show(struct seq_file *m, void *v) { unsigned long tb0, titan_tod; tb0 = get_tb(); titan_tod = HvCallXm_loadTod(); seq_printf(m, "Titan\n" ); seq_printf(m, " time base = %016lx\n", tb0); seq_printf(m, " titan tod = %016lx\n", titan_tod); seq_printf(m, " xProcFreq = %016x\n", xIoHriProcessorVpd[0].xProcFreq); seq_printf(m, " xTimeBaseFreq = %016x\n", xIoHriProcessorVpd[0].xTimeBaseFreq); seq_printf(m, " tb_ticks_per_jiffy = %lu\n", tb_ticks_per_jiffy); seq_printf(m, " tb_ticks_per_usec = %lu\n", tb_ticks_per_usec); if (!startTitan) { startTitan = titan_tod; startTb = tb0; } else { unsigned long titan_usec = (titan_tod - startTitan) >> 12; unsigned long tb_ticks = (tb0 - startTb); unsigned long titan_jiffies = titan_usec / (1000000/HZ); unsigned long titan_jiff_usec = titan_jiffies * (1000000/HZ); unsigned long titan_jiff_rem_usec = titan_usec - titan_jiff_usec; unsigned long tb_jiffies = tb_ticks / tb_ticks_per_jiffy; unsigned long tb_jiff_ticks = tb_jiffies * tb_ticks_per_jiffy; unsigned long tb_jiff_rem_ticks = tb_ticks - tb_jiff_ticks; unsigned long tb_jiff_rem_usec = tb_jiff_rem_ticks / tb_ticks_per_usec; unsigned long new_tb_ticks_per_jiffy = (tb_ticks * (1000000/HZ))/titan_usec; seq_printf(m, " titan elapsed = %lu uSec\n", titan_usec); seq_printf(m, " tb elapsed = %lu ticks\n", tb_ticks); seq_printf(m, " titan jiffies = %lu.%04lu \n", titan_jiffies, titan_jiff_rem_usec); seq_printf(m, " tb jiffies = %lu.%04lu\n", tb_jiffies, tb_jiff_rem_usec); seq_printf(m, " new tb_ticks_per_jiffy = %lu\n", new_tb_ticks_per_jiffy); } return 0; } static int proc_titantod_open(struct inode *inode, struct file *file) { return single_open(file, proc_titantod_show, NULL); } static struct file_operations proc_titantod_operations = { .open = proc_titantod_open, .read = seq_read, .llseek = seq_lseek, .release = single_release, }; static int __init iseries_proc_init(void) { struct proc_dir_entry *e; e = create_proc_entry("iSeries/titanTod", S_IFREG|S_IRUGO, NULL); if (e) e->proc_fops = &proc_titantod_operations; return 0; } __initcall(iseries_proc_init);