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
  33 static int __init iseries_proc_create(void)
  34 {
  35         struct proc_dir_entry *e = proc_mkdir("iSeries", 0);
  36         if (!e)
  37                 return 1;
  38
  39         return 0;
  40 }
  41 core_initcall(iseries_proc_create);
  42
  43 static char *event_types[9] = {
  44         "Hypervisor\t\t",
  45         "Machine Facilities\t",
  46         "Session Manager\t",
  47         "SPD I/O\t\t",
  48         "Virtual Bus\t\t",
  49         "PCI I/O\t\t",
  50         "RIO I/O\t\t",
  51         "Virtual Lan\t\t",
  52         "Virtual I/O\t\t"
  53 };
  54
  55 static int proc_lpevents_show(struct seq_file *m, void *v)
  56 {
  57         unsigned int i;
  58
  59         seq_printf(m, "LpEventQueue 0\n");
  60         seq_printf(m, "  events processed:\t%lu\n",
  61                    (unsigned long)xItLpQueue.xLpIntCount);
  62
  63         for (i = 0; i < 9; ++i)
  64                 seq_printf(m, "    %s %10lu\n", event_types[i],
  65                            (unsigned long)xItLpQueue.xLpIntCountByType[i]);
  66
  67         seq_printf(m, "\n  events processed by processor:\n");
  68
  69         for_each_online_cpu(i)
  70                 seq_printf(m, "    CPU%02d  %10u\n", i, paca[i].lpevent_count);
  71
  72         return 0;
  73 }
  74
  75 static int proc_lpevents_open(struct inode *inode, struct file *file)
  76 {
  77         return single_open(file, proc_lpevents_show, NULL);
  78 }
  79
  80 static struct file_operations proc_lpevents_operations = {
  81         .open           = proc_lpevents_open,
  82         .read           = seq_read,
  83         .llseek         = seq_lseek,
  84         .release        = single_release,
  85 };
  86
  87 static unsigned long startTitan = 0;
  88 static unsigned long startTb = 0;
  89
  90 static int proc_titantod_show(struct seq_file *m, void *v)
  91 {
  92         unsigned long tb0, titan_tod;
  93
  94         tb0 = get_tb();
  95         titan_tod = HvCallXm_loadTod();
  96
  97         seq_printf(m, "Titan\n" );
  98         seq_printf(m, "  time base =          %016lx\n", tb0);
  99         seq_printf(m, "  titan tod =          %016lx\n", titan_tod);
 100         seq_printf(m, "  xProcFreq =          %016x\n",
 101                    xIoHriProcessorVpd[0].xProcFreq);
 102         seq_printf(m, "  xTimeBaseFreq =      %016x\n",
 103                    xIoHriProcessorVpd[0].xTimeBaseFreq);
 104         seq_printf(m, "  tb_ticks_per_jiffy = %lu\n", tb_ticks_per_jiffy);
 105         seq_printf(m, "  tb_ticks_per_usec  = %lu\n", tb_ticks_per_usec);
 106
 107         if (!startTitan) {
 108                 startTitan = titan_tod;
 109                 startTb = tb0;
 110         } else {
 111                 unsigned long titan_usec = (titan_tod - startTitan) >> 12;
 112                 unsigned long tb_ticks = (tb0 - startTb);
 113                 unsigned long titan_jiffies = titan_usec / (1000000/HZ);
 114                 unsigned long titan_jiff_usec = titan_jiffies * (1000000/HZ);
 115                 unsigned long titan_jiff_rem_usec = titan_usec - titan_jiff_usec;
 116                 unsigned long tb_jiffies = tb_ticks / tb_ticks_per_jiffy;
 117                 unsigned long tb_jiff_ticks = tb_jiffies * tb_ticks_per_jiffy;
 118                 unsigned long tb_jiff_rem_ticks = tb_ticks - tb_jiff_ticks;
 119                 unsigned long tb_jiff_rem_usec = tb_jiff_rem_ticks / tb_ticks_per_usec;
 120                 unsigned long new_tb_ticks_per_jiffy = (tb_ticks * (1000000/HZ))/titan_usec;
 121
 122                 seq_printf(m, "  titan elapsed = %lu uSec\n", titan_usec);
 123                 seq_printf(m, "  tb elapsed    = %lu ticks\n", tb_ticks);
 124                 seq_printf(m, "  titan jiffies = %lu.%04lu \n", titan_jiffies,
 125                            titan_jiff_rem_usec);
 126                 seq_printf(m, "  tb jiffies    = %lu.%04lu\n", tb_jiffies,
 127                            tb_jiff_rem_usec);
 128                 seq_printf(m, "  new tb_ticks_per_jiffy = %lu\n",
 129                            new_tb_ticks_per_jiffy);
 130         }
 131
 132         return 0;
 133 }
 134
 135 static int proc_titantod_open(struct inode *inode, struct file *file)
 136 {
 137         return single_open(file, proc_titantod_show, NULL);
 138 }
 139
 140 static struct file_operations proc_titantod_operations = {
 141         .open           = proc_titantod_open,
 142         .read           = seq_read,
 143         .llseek         = seq_lseek,
 144         .release        = single_release,
 145 };
 146
 147 static int __init iseries_proc_init(void)
 148 {
 149         struct proc_dir_entry *e;
 150
 151         e = create_proc_entry("iSeries/lpevents", S_IFREG|S_IRUGO, NULL);
 152         if (e)
 153                 e->proc_fops = &proc_lpevents_operations;
 154
 155         e = create_proc_entry("iSeries/titanTod", S_IFREG|S_IRUGO, NULL);
 156         if (e)
 157                 e->proc_fops = &proc_titantod_operations;
 158
 159         return 0;
 160 }
 161 __initcall(iseries_proc_init);