arch/ppc64/kernel/iSeries_proc.c

   1 /*
   2  * iSeries_proc.c
   3  * Copyright (C) 2001  Kyle A. Lucke IBM Corporation
   4  * Copyright (C) 2001 Mike Corrigan & Dave Engebretsen IBM Corporation
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  19  */
  20 #include <linux/init.h>
  21 #include <linux/proc_fs.h>
  22 #include <linux/seq_file.h>
  23 #include <linux/param.h>                /* for HZ */
  24 #include <asm/paca.h>
  25 #include <asm/processor.h>
  26 #include <asm/time.h>
  27 #include <asm/lppaca.h>
  28 #include <asm/iSeries/ItLpQueue.h>
  29 #include <asm/iSeries/HvCallXm.h>
  30 #include <asm/iSeries/IoHriMainStore.h>
  31 #include <asm/iSeries/LparData.h>
  32 #include <asm/iSeries/iSeries_proc.h>
  33
  34 static int __init iseries_proc_create(void)
  35 {
  36         struct proc_dir_entry *e = proc_mkdir("iSeries", 0);
  37         if (!e)
  38                 return 1;
  39
  40         return 0;
  41 }
  42 core_initcall(iseries_proc_create);
  43
  44 static char *event_types[9] = {
  45         "Hypervisor\t\t",
  46         "Machine Facilities\t",
  47         "Session Manager\t",
  48         "SPD I/O\t\t",
  49         "Virtual Bus\t\t",
  50         "PCI I/O\t\t",
  51         "RIO I/O\t\t",
  52         "Virtual Lan\t\t",
  53         "Virtual I/O\t\t"
  54 };
  55
  56 static int proc_lpevents_show(struct seq_file *m, void *v)
  57 {
  58         unsigned int i;
  59
  60         seq_printf(m, "LpEventQueue 0\n");
  61         seq_printf(m, "  events processed:\t%lu\n",
  62                    (unsigned long)xItLpQueue.xLpIntCount);
  63
  64         for (i = 0; i < 9; ++i)
  65                 seq_printf(m, "    %s %10lu\n", event_types[i],
  66                            (unsigned long)xItLpQueue.xLpIntCountByType[i]);
  67
  68         seq_printf(m, "\n  events processed by processor:\n");
  69
  70         for_each_online_cpu(i)
  71                 seq_printf(m, "    CPU%02d  %10u\n", i, paca[i].lpevent_count);
  72
  73         return 0;
  74 }
  75
  76 static int proc_lpevents_open(struct inode *inode, struct file *file)
  77 {
  78         return single_open(file, proc_lpevents_show, NULL);
  79 }
  80
  81 static struct file_operations proc_lpevents_operations = {
  82         .open           = proc_lpevents_open,
  83         .read           = seq_read,
  84         .llseek         = seq_lseek,
  85         .release        = single_release,
  86 };
  87
  88 static unsigned long startTitan = 0;
  89 static unsigned long startTb = 0;
  90
  91 static int proc_titantod_show(struct seq_file *m, void *v)
  92 {
  93         unsigned long tb0, titan_tod;
  94
  95         tb0 = get_tb();
  96         titan_tod = HvCallXm_loadTod();
  97
  98         seq_printf(m, "Titan\n" );
  99         seq_printf(m, "  time base =          %016lx\n", tb0);
 100         seq_printf(m, "  titan tod =          %016lx\n", titan_tod);
 101         seq_printf(m, "  xProcFreq =          %016x\n",
 102                    xIoHriProcessorVpd[0].xProcFreq);
 103         seq_printf(m, "  xTimeBaseFreq =      %016x\n",
 104                    xIoHriProcessorVpd[0].xTimeBaseFreq);
 105         seq_printf(m, "  tb_ticks_per_jiffy = %lu\n", tb_ticks_per_jiffy);
 106         seq_printf(m, "  tb_ticks_per_usec  = %lu\n", tb_ticks_per_usec);
 107
 108         if (!startTitan) {
 109                 startTitan = titan_tod;
 110                 startTb = tb0;
 111         } else {
 112                 unsigned long titan_usec = (titan_tod - startTitan) >> 12;
 113                 unsigned long tb_ticks = (tb0 - startTb);
 114                 unsigned long titan_jiffies = titan_usec / (1000000/HZ);
 115                 unsigned long titan_jiff_usec = titan_jiffies * (1000000/HZ);
 116                 unsigned long titan_jiff_rem_usec = titan_usec - titan_jiff_usec;
 117                 unsigned long tb_jiffies = tb_ticks / tb_ticks_per_jiffy;
 118                 unsigned long tb_jiff_ticks = tb_jiffies * tb_ticks_per_jiffy;
 119                 unsigned long tb_jiff_rem_ticks = tb_ticks - tb_jiff_ticks;
 120                 unsigned long tb_jiff_rem_usec = tb_jiff_rem_ticks / tb_ticks_per_usec;
 121                 unsigned long new_tb_ticks_per_jiffy = (tb_ticks * (1000000/HZ))/titan_usec;
 122
 123                 seq_printf(m, "  titan elapsed = %lu uSec\n", titan_usec);
 124                 seq_printf(m, "  tb elapsed    = %lu ticks\n", tb_ticks);
 125                 seq_printf(m, "  titan jiffies = %lu.%04lu \n", titan_jiffies,
 126                            titan_jiff_rem_usec);
 127                 seq_printf(m, "  tb jiffies    = %lu.%04lu\n", tb_jiffies,
 128                            tb_jiff_rem_usec);
 129                 seq_printf(m, "  new tb_ticks_per_jiffy = %lu\n",
 130                            new_tb_ticks_per_jiffy);
 131         }
 132
 133         return 0;
 134 }
 135
 136 static int proc_titantod_open(struct inode *inode, struct file *file)
 137 {
 138         return single_open(file, proc_titantod_show, NULL);
 139 }
 140
 141 static struct file_operations proc_titantod_operations = {
 142         .open           = proc_titantod_open,
 143         .read           = seq_read,
 144         .llseek         = seq_lseek,
 145         .release        = single_release,
 146 };
 147
 148 static int __init iseries_proc_init(void)
 149 {
 150         struct proc_dir_entry *e;
 151
 152         e = create_proc_entry("iSeries/lpevents", S_IFREG|S_IRUGO, NULL);
 153         if (e)
 154                 e->proc_fops = &proc_lpevents_operations;
 155
 156         e = create_proc_entry("iSeries/titanTod", S_IFREG|S_IRUGO, NULL);
 157         if (e)
 158                 e->proc_fops = &proc_titantod_operations;
 159
 160         return 0;
 161 }
 162 __initcall(iseries_proc_init);