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/naca.h>
  28 #include <asm/iSeries/ItLpPaca.h>
  29 #include <asm/iSeries/ItLpQueue.h>
  30 #include <asm/iSeries/HvCallXm.h>
  31 #include <asm/iSeries/IoHriMainStore.h>
  32 #include <asm/iSeries/LparData.h>
  33 #include <asm/iSeries/iSeries_proc.h>
  34
  35 static int __init iseries_proc_create(void)
  36 {
  37         struct proc_dir_entry *e = proc_mkdir("iSeries", 0);
  38         if (!e)
  39                 return 1;
  40
  41         return 0;
  42 }
  43 core_initcall(iseries_proc_create);
  44
  45 static char *event_types[9] = {
  46         "Hypervisor\t\t",
  47         "Machine Facilities\t",
  48         "Session Manager\t",
  49         "SPD I/O\t\t",
  50         "Virtual Bus\t\t",
  51         "PCI I/O\t\t",
  52         "RIO I/O\t\t",
  53         "Virtual Lan\t\t",
  54         "Virtual I/O\t\t"
  55 };
  56
  57 static int proc_lpevents_show(struct seq_file *m, void *v)
  58 {
  59         unsigned int i;
  60
  61         seq_printf(m, "LpEventQueue 0\n");
  62         seq_printf(m, "  events processed:\t%lu\n",
  63                    (unsigned long)xItLpQueue.xLpIntCount);
  64
  65         for (i = 0; i < 9; ++i)
  66                 seq_printf(m, "    %s %10lu\n", event_types[i],
  67                            (unsigned long)xItLpQueue.xLpIntCountByType[i]);
  68
  69         seq_printf(m, "\n  events processed by processor:\n");
  70
  71         for_each_online_cpu(i)
  72                 seq_printf(m, "    CPU%02d  %10u\n", i, paca[i].lpevent_count);
  73
  74         return 0;
  75 }
  76
  77 static int proc_lpevents_open(struct inode *inode, struct file *file)
  78 {
  79         return single_open(file, proc_lpevents_show, NULL);
  80 }
  81
  82 static struct file_operations proc_lpevents_operations = {
  83         .open           = proc_lpevents_open,
  84         .read           = seq_read,
  85         .llseek         = seq_lseek,
  86         .release        = single_release,
  87 };
  88
  89 static unsigned long startTitan = 0;
  90 static unsigned long startTb = 0;
  91
  92 static int proc_titantod_show(struct seq_file *m, void *v)
  93 {
  94         unsigned long tb0, titan_tod;
  95
  96         tb0 = get_tb();
  97         titan_tod = HvCallXm_loadTod();
  98
  99         seq_printf(m, "Titan\n" );
 100         seq_printf(m, "  time base =          %016lx\n", tb0);
 101         seq_printf(m, "  titan tod =          %016lx\n", titan_tod);
 102         seq_printf(m, "  xProcFreq =          %016x\n",
 103                    xIoHriProcessorVpd[0].xProcFreq);
 104         seq_printf(m, "  xTimeBaseFreq =      %016x\n",
 105                    xIoHriProcessorVpd[0].xTimeBaseFreq);
 106         seq_printf(m, "  tb_ticks_per_jiffy = %lu\n", tb_ticks_per_jiffy);
 107         seq_printf(m, "  tb_ticks_per_usec  = %lu\n", tb_ticks_per_usec);
 108
 109         if (!startTitan) {
 110                 startTitan = titan_tod;
 111                 startTb = tb0;
 112         } else {
 113                 unsigned long titan_usec = (titan_tod - startTitan) >> 12;
 114                 unsigned long tb_ticks = (tb0 - startTb);
 115                 unsigned long titan_jiffies = titan_usec / (1000000/HZ);
 116                 unsigned long titan_jiff_usec = titan_jiffies * (1000000/HZ);
 117                 unsigned long titan_jiff_rem_usec = titan_usec - titan_jiff_usec;
 118                 unsigned long tb_jiffies = tb_ticks / tb_ticks_per_jiffy;
 119                 unsigned long tb_jiff_ticks = tb_jiffies * tb_ticks_per_jiffy;
 120                 unsigned long tb_jiff_rem_ticks = tb_ticks - tb_jiff_ticks;
 121                 unsigned long tb_jiff_rem_usec = tb_jiff_rem_ticks / tb_ticks_per_usec;
 122                 unsigned long new_tb_ticks_per_jiffy = (tb_ticks * (1000000/HZ))/titan_usec;
 123
 124                 seq_printf(m, "  titan elapsed = %lu uSec\n", titan_usec);
 125                 seq_printf(m, "  tb elapsed    = %lu ticks\n", tb_ticks);
 126                 seq_printf(m, "  titan jiffies = %lu.%04lu \n", titan_jiffies,
 127                            titan_jiff_rem_usec);
 128                 seq_printf(m, "  tb jiffies    = %lu.%04lu\n", tb_jiffies,
 129                            tb_jiff_rem_usec);
 130                 seq_printf(m, "  new tb_ticks_per_jiffy = %lu\n",
 131                            new_tb_ticks_per_jiffy);
 132         }
 133
 134         return 0;
 135 }
 136
 137 static int proc_titantod_open(struct inode *inode, struct file *file)
 138 {
 139         return single_open(file, proc_titantod_show, NULL);
 140 }
 141
 142 static struct file_operations proc_titantod_operations = {
 143         .open           = proc_titantod_open,
 144         .read           = seq_read,
 145         .llseek         = seq_lseek,
 146         .release        = single_release,
 147 };
 148
 149 static int __init iseries_proc_init(void)
 150 {
 151         struct proc_dir_entry *e;
 152
 153         e = create_proc_entry("iSeries/lpevents", S_IFREG|S_IRUGO, NULL);
 154         if (e)
 155                 e->proc_fops = &proc_lpevents_operations;
 156
 157         e = create_proc_entry("iSeries/titanTod", S_IFREG|S_IRUGO, NULL);
 158         if (e)
 159                 e->proc_fops = &proc_titantod_operations;
 160
 161         return 0;
 162 }
 163 __initcall(iseries_proc_init);